Credits : Eu-startups


As our PHP Tech Lead, you seamlessly switch between being a passionate coder and a leader who can scale up our development team and help take Scribbr to the next level.

We are constantly seeking ways to improve our services through technology. Our goal is to build a strong, efficient and fun development team that can get the job done, using the best, cutting-edge techniques.

Our tech stack: PHP 7.1, Symfony 3, Doctrine, Vagrant, Redis, Selenium, Scrutinizer, PHPStan, PHPUnit, Gitlab, Heineken, TDD, DDD and CI/CD.

Your responsibilities

  • You will help develop one of the most effective and ambitious dev teams in Amsterdam!
  • You will play a key role in determining the direction for Scribbr’s development team. After discussion with the development team and the co-founders, you have the final say.
  • You will suggest improvements to processes, technologies and interfaces to enhance the team’s effectiveness.
  • You are responsible for infrastructure stability, monitoring and recovery. If for some reason, we don’t have a TV with the right server stats, then you will help us get one ASAP
  • You will work closely with the product owner and business to ensure we work on issues that deliver business value and improve the codebase.
  • You will be a leader in discussions, keeping them concise and effective.
  • You will help mentor and lead the efforts of the team in addition to doing “heads-down” coding.
  • It’s your job to make the development team’s output predictable.
  • Your job also includes preventing technical debt and keeping the application future-proof.
  • As a team leader, you’ll play a key role in hiring new developers to join our growing team.

What are we looking for?

  • An experienced senior PHP developer with strong leadership skills.
  • Experience with DDD and commitment to the SOLID principles.
  • Experience with Symfony or similar frameworks.
  • Experience with improving code and architecture. You know what to improve first, how and when.
  • Excellent interpersonal and communication skills.
  • You are used to Dutch culture (or are Dutch).
  • Experience with Agile software development.
  • Eager to learn about the business. Having a business/entrepreneurial mindset is a big plus.
  • Passion for understanding emerging technologies with pragmatic insight into where those technologies can be integrated into business solutions.

What do we offer?

  • Complete autonomy. Do we need to refactor? Go for it!
  • A role on the management team and room to grow into the role of CTO.
  • A fun, ambitious, informal work environment that embraces the latest technologies
  • 25 paid holidays!
  • A generous tech budget to upgrade your gadget collection.
  • And of course… Friday beers, BBQs, a Scribbr boat docked outside the office, smart and young colleagues, free lunch, etc.

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Credits : Cxotoday


The industry of Computer Software is constantly changing and we have nearly crossed midway in 2018. To understand these technologies in the competitive market, and how they impact businesses, companies need to follow the main technology trends suitable for their industry and adapt to its changes. Why is it important? It helps to find more clients, provide the services that they’ve never seen before, and increase the profit.

The most notable industry and market trends are connected with the Artificial Intelligence, AR and VR, Big Data analysis, and improving the customer service. Corporations are getting more and more tools for analyzing their clients to fulfill their needs.

Blockchain technologies will also be a major trend. They become popular with the help of cryptocurrencies and many engineers still see a big future for using blockchain technologies in different industries.

AI And Machine Learning

The number of projects connected with AI investigations is twice as much as last year. It is developing quite rapidly. Big corporations make more and more investments in their research of AI and machine learning, and the number of successfully run AI projects should increase fast.

These systems have many advantages and we have to notice the ability to learn. Many search engines are already working by using AI and machine learning technologies and they bring much more effective results in shorter terms in comparison with usual software.


For decades, people try to automate routine processes to reduce expenses and do more interesting and less difficult jobs. There is nothing strange about this. Now there are even more possibilities to let the software do difficult tasks in a much shorter time than people do.

When working in online markets, companies automate the process of recovering password, responding to clients, processing their requests. This makes the whole workflow much simpler and faster. If we use AI and Big Data technologies, we can also automate personalized mailings and responding to clients’ letters.

Using Big Data

Companies will gather more and more Big Data about their clients and products. Why do they need this? With the powerful analysis tools, it will help them to predict the behavior of their clients, understand their needs, and provide better service.

When needing more space for data storing and processing, companies will spend much more on software and hardware for it. Different companies will be working on their projects developed according to their objectives.

Transparency And Communication

If earlier many teams were isolated from each other, now there is time to work together. When working on a common project, teams will communicate more with other teams and make the development process more open and transparent. Teamwork is becoming a new big trend.

Project managers understand that sharing the latest software technology and experience helps to reach objectives fast and get better results. That is why they support the communication between different teams and departments in companies.


We read about hacker attacks, data leaks, and stolen information almost every day. Such mistakes cost much for many companies. They will invest more in their security to reduce the number of attacks and leaks so it helps them to save much money.

Companies are going to use more professional security software. They also will work more on protecting the data of their clients. When more and more transactions are made online, it requires developing software for much secured payments – after all, today people buy everything online starting from goods to purchasing essays from an affordable custom essays writing service.

Marketing Technologies

People are bored by old advertisement technologies. They use AdBlock and other tools if they don’t want to see unwanted ads when they look for what they need. That is why companies try to use software to make their marketing technologies more original.

Many branding companies go online and start raising bigger profit by selling their products on the Internet. They run the clever marketing strategies using social networks, Google SEO instruments, other tools. That is why companies should look for original ways to do their marketing.


By using different tools, companies can measure different parameters of their service. How fast they provide their services, how much they spend on it, and how much are their clients satisfied. Then they analyze their results and see what they can improve.

Measurement helps to find out what they are doing right and wrong, what are their weak sides, and what they can do to gain more profits. There are different ways to gather such information, for example, customer surveys and other tools.


Every client wants to see what is interesting for them – if they get information that is not relevant to them, they get bored and unsatisfied. That is why companies will work more on personalization of customer service.

When working with their clients, companies should use these client’s names, personalized search results, and offers, based on interests and requests of these clients. People pay much more attention to things that are interesting to them.

Different Platforms

Clients prefer to use services on different platforms. For example, they can create a file by using desktop software, edit it later in a web application, and then work with it by using a mobile device. It makes companies develop their services for different platforms.

If an enterprise develops its application, there should be versions for most of the desktop and mobile platforms. It may be difficult but clients don’t like to work with software that doesn’t work with specific devices.


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Credits : Theregister


If you want a vision of the future of software creation, imagine a boot process spinning up a server, forever.

Speaking at Continuous Lifecycle London* on Wednesday, Mike Roberts, co-founder of consultancy Symphonia Cloud, employed less Orwellian terminology for tomorrow: continuous experimentation.

Perhaps you’ve heard of continuous delivery, the trending software engineering practice that aims to accelerate development cycles while making them simultaneously speedy and boring.

Continuous experimentation takes that a step further by reducing development cycles to weeks, days or even hours while making the data derived into fuel for further innovation.

“There’s no point in having continuous experimentation if we’re not continuously learning,” Roberts said.

Over the past 20 years, he explained, “the lead time for delivering software has come down significantly. It used to take years. Now it’s more like weeks. We have the opportunity to bring this lead time down further to days or hours.”

Echoing arguments made earlier in the day by conference presenter Linda Rising, Roberts urged businesses to reorganize their IT operations around technology and management processes that enable the rapid testing of ideas.

“Most of our ideas suck,” he said, attributing the quote to software consultant Jeff Patton (though any cynic, unbidden, will say as much).

“But some of them are amazing,” he added. “If we can try enough of these ideas out, we can play a numbers game. We can find that ideas that will really help our customers.”

Enterprises, Roberts insisted, have to start thinking about how they can embrace experimentation as their core way of working, something many startups have done.

That’s not an easy task. Roberts enumerated a number of obstacles that bar the way to reaching the dream state of frictionless, perpetual innovation.

There are technical challenges: minimizing incidental complexity; reducing infrastructure costs and commitments to new systems; avoiding the technical tar pit formed by a fragmented ecosystem.

Roberts favors serverless technology for overcoming these issues and contends it has as much value for accelerating development as it does for reducing expenses.

“If you’re only using serverless for the cost savings, I think you’re missing a big trick,” he said.

There are organizational and cultural challenges, too: Minimizing the time from code completion to code deployment; nurturing a culture of learning; and spreading ownership of product innovation across teams.

“When we treat engineers as just code robots, we’re not really releasing their full potential,” he said.

And there are safety challenges: making it safe to fail; ensuring budgets don’t get busted along the way; and protecting data and security.

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Credits : Sdtimes


In the modern economy, every business is a software business. Why?  Because companies have figured out that the easiest way to introduce innovation into a marketplace is with software, whose defining characteristic is that, well, it’s soft.  Instead of waiting months to make a change to some physical piece of equipment, software can be distributed quickly and widely to smartphone users, programmable manufacturing equipment, and a wide variety of other destinations. This is why you can Google just about any company of any size and find they have openings for software engineers.

But if you’re spending all that money on developer salaries, how do you maximize the amount of innovation you can get out of them?  It turns out, iterations are the currency of software innovation.

It’s all about the at-bats
Venture capitalists are in the business of finding innovation and most of them will tell you that for every 10 companies they invest in, they are happy if one hits it big.  Among the things that public cloud did for the VC community is let them take more swings of the bat by funding more companies at a lower capitalization because those startups could begin without having to purchase hardware.  More at-bats, to continue the baseball analogy, resulted in more innovation.

Applying that same hit percentage to software development, companies have a 10% chance of any release containing an innovation that will stick with its intended audience, so is it better to have four chances at innovation a year with quarterly releases, 12 chances with monthly releases, or 52 chances with weekly releases?  The strategic answer is obvious.  More releases, more iterations of software, produces more chances at innovation.  Tactically, though, how do you do that?

Maximizing iterations: From monoliths to microservices
In the early 1990s when most software was running in data centers on physical hardware, iteration speed was trumped by risk mitigation.  Back then, those physical servers had to be treated like scarce resources. That’s  because they were the only way to make a unit of compute accessible to run a software stack, and to replace that unit of compute took months.  Components of a monolithic application most often communicated with each other within the same memory space or over client/server connections using custom protocols.  All the pieces were typically moved together into production to avoid as much risk as possible, but the side effect of that was that if one component had issues, the entire application had to be backed out, which limited iteration speed further.

But virtual machines can be created in minutes and containers can be created in seconds, which changed the way that developers thought about application components.  Instead of relying on in-memory or custom protocol communication, if each component had an HTTP-based API it could act as a contract between the components.  As long as that contract didn’t change, the components could be released independent of one another. Further, if every component could sit behind its own load balancer it could also be scaled independently, in addition to taking advantage of rolling deployments where old instances of components are removed from behind the load balancer as new ones are injected.

These are the modern tenets of a microservices-based architecture, which are more loosely coupled thanks to those API contracts than their monolithic predecessors, enabling faster iterations.

Kubernetes is a big deal, and so is serverless
But now if you have hundreds or thousands of containers to manage for all these microservices, you need a way to distribute them across different physical or virtual hosts, figure out naming and scheduling, and improve networking because different components might be on the same host, negating the need for packets to go out to the network card.  This is why Kubernetes is such a big deal and why Google (through GKE), AWS (through EKS), and Cisco (through CCP), among others, are so bought into the container clustering platform.  And again, it’s all in the name of iterations, so that development teams can more loosely couple their components and release them faster as a way of finding innovation.

But what’s next?  The big deal over serverless architectures is that they could be the next step in this evolution.  Instead of coupling components via API contracts, serverless functions are tied together through event gateways. Instead of having multiple instances of a component sitting behind a load balancer, functions sit on disk until an event triggers them into action.  This requires a far more stateless approach to building the logic inside the individual functions but is an even looser coupling than microservices with potentially better underlying physical server utilization, since the functions are at rest on disk until necessary.

The bottom line
The bottom line is that the best way to find a good idea is to iterate through ideas quickly and discard the bad ones once you’ve tried them.  This concept is driving application architecture, container clustering platforms, and serverless approaches in an attempt to remove as much friction from the software development and release processes as possible.  The potential innovation gains from maximizing iterations are what just about every company is chasing these days and it’s all because iterations are the currency of software innovation.

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Credits : Quantamagazine


Do genes behave like lines of computer code? Our April puzzlediscussed ways in which genes hold true to this analogy: They have control structures commonplace in computer programs, such as “if-then” logic, “do loops,” timing routines and cascading “subroutine calls.” We also listed some ways that DNA programs differ from ordinary computer programs: Genes program three-dimensional structures from scratch in a water-based medium, using massive parallelism and swarm programming while making use of, and being constrained by, the laws of physics and chemistry.

There’s another important way that genes behave differently from computer code and mathematical models generated by humans. In a nutshell, biology is extremely complicated and messy. Unlike a well-documented and logically organized computer program that a professional software engineer would write, evolutionary algorithms were not written with human understanding in mind. DNA logic, which can seem like the original “spaghetti code,” is exceedingly difficult to follow in its details. This difference between human-generated and evolution-generated code also holds for mathematical models applied to biology. Unlike the smooth, elegant models that work in arguably simpler sciences like physics, sudden discrete changes and chaotic nonlinear functions in biological situations are very difficult to predict mathematically. While we can understand and appreciate general principles in these problems, we can’t escape the complications that lie just below the surface.

Problem 1

In this problem you have to figure out the details of a hypothetical scenario in which a growing embryo can initiate the formation of two bony rods in the middle of its body using morphogens. Imagine a rectangular sheet consisting of 101 vertical columns and 200 horizontal rows of identical round cells lined end to end. The cells along the left edge (in column 0) can sense that they are on the edge, and can activate genes to release three different morphogens, A through C, in different concentrations. Each morphogen achieves its highest concentration at the left edge of the sheet, but each diffuses at different rates, so that the concentrations of A, B and C respectively at the right edge are 0.1, 0.2 and 0.4 times their left-edge concentrations, with a uniform gradient in between. Each cell in the sheet is programmed to make three pairs of molecules — one pair for each morphogen. Each pair consists of a “bone initiator” molecule and a “bone suppressor” molecule. These molecules get switched on or off based on the concentration of their particular morphogen as shown in the table below. Thus, morphogen A’s bone initiator becomes active when the concentration of A is at or below 0.64 units/ml, whereas A’s bone suppressor becomes active when A’s concentration falls below 0.46 units/ml. The bone initiators and suppressors related to the other morphogens function similarly, but at different concentrations of their morphogens as shown below. Each bone suppressor, when active, completely blocks the action of its corresponding bone initiator. Bone is laid down when at least two bone initiators are active in a given cell, without being blocked by their corresponding suppressors.

Morphogen Bone initiator requires Bone suppressor requires
A <= 0.64 units/mL < 0.46 units/mL
B <= 6.8 units/mL < 6.1 units/mL
C <= 2.8 units/mL < 2.6 units/mL

What concentrations of the three morphogens at the left edge would make columns 40 to 45 and columns 55 to 60 of the cells lay down bone in response to two active bone initiators, while no other cells lay down bone? Of the several concentrations that can work, which ones might be least prone to development errors in response to small random fluctuations in morphogen concentrations?

To allow only the specified cells to have two active unsuppressed bone initiators, we need the following things to be true.

i. One of the morphogens must reach its bone initiator threshold at the 40th column and must reach its bone suppressor threshold at the 61st column.

ii. The other two morphogens must behave as follows. One of them must activate its initiator sometime before the 40th column and activate its suppressor exactly at the 46th column; the other must activate its initiator exactly at the 55th column without activating its suppressor until after the 60th column.

Condition (i) is quite stringent, and only morphogen A can meet it. The difference between its bone initiator and suppressor threshold of 0.18 units/mL over 20 columns is exactly what is required for the right edge concentration to become 0.1 times the left edge concentration as specified. This gives us a consistency check that morphogen A passes, but morphogens B and C do not.

Condition (ii) is more flexible, and both morphogens B and C can meet it. Thus, we can use morphogen B for the left bone and morphogen C for the right as Alexandre did, or the other way around as Ed did. You can solve for the left-edge concentrations using the equation given by Alexandre, or use a spreadsheet as Ed did. Each of these two choices works for a range of left-edge concentrations of the two morphogens. For example, in the first case, the lowest left-edge concentration of B that works is 9.532. The concentration dips below 6.8 (the initiator threshold) well before the 40th column, stays just slightly above 6.1 (the suppressor threshold) at column 45, and dips comfortably below it at column 46. On the other hand, the highest possible left-edge concentration that works is 9.651. The concentration gradient behaves similarly, but this time just barely dips below the suppressor threshold at column 46.

The left-edge concentration ranges that work for the two cases are as follows:

A = 1 unit/mL, B = 9.532 to 9.651 units/mL, C = 4.142 to 4.179 units/mL

A = 1 unit/mL, B = 11.972 to 12.142 units/mL, C = 3.562 to 3.591 units/mL

The middle of the range concentrations, 9.59 and 4.16 for B and C in the first case, and 12.06 and 3.58 in the second, are the ones that would be least prone to developmental errors caused by random fluctuations in morphogen concentrations, because they provide a “cushion” of a few fractions of a unit on both sides at the transition columns, 45 to 46 and 54 to 55. At the extreme ends of the above ranges, random fluctuations could fail to initiate bone formation at the right column or spillover to adjacent columns making the bones thicker or thinner than they need to be. In this connection, the figures I provided for morphogen A to make things simple are much too tight to be biologically plausible. More realistic concentrations in the first line of the table should have been <= 0.645 and < 0.455.

Note that the above example uses morphogen concentrations to produce exact patterns despite small random fluctuations, whereas the Turing mechanism that seems to be operative in producing zebra fish stripes magnifies such fluctuations to produce unique, random patterns. I suspect that the former mechanism operates when an exact, symmetric pattern is desired, such as the complicated eyespots on butterfly wings, whereas the latter mechanism is used in unique, nonsymmetrical patterns such as human fingerprints.

Our second problem was based on a 2015 Quanta article about the biologist Jennifer Marshall Graves’ prediction that the human Y chromosome could disappear in future evolution. This prediction is based on the following information in the article: “In the last 190 million years, the number of genes on the Y has plummeted from more than 1,000 to roughly 50, a loss of more than 95 percent. The X chromosome, in contrast, still has roughly 1,000 genes.”

Problem 2

There are two schools of thought about whether or not the Y chromosome will disappear in the distant future. This problem examines the merits of the two arguments.

First, what will be the fate of the Y chromosome if you linearly extrapolate the loss of genes (1,000 to 50 in 190 million years)?

On the other hand, the Y chromosome has lost none or almost no genes in the last 25 million years (different estimates say 0 to 3), leading some scientists to argue that the deterioration of the Y has stopped. Perhaps there is a sizable advantage to keeping all the male-producing genes together in a neat “code module”! Assuming a constant probability for the disappearance of Y-chromosome genes over time, what is the probability that the pause or marked decrease in the loss of just 0 to 3 genes over the last 25 million years is due to chance?

As Alexandre commented, the Y chromosome’s rate of loss of genes is 950/190 = 5 genes every million years. If we do a linear extrapolation at this rate, the remaining 50 genes should disappear in just 10 million years. The fact that only 0 to 3 genes have been lost in the last 25 million years means that the loss of genes on the Y chromosome has indeed slowed dramatically. You would expect 1 gene to be lost every 0.2 million years, which would allow as many as 125 genes to be lost in 25 million years. In order to estimate how unlikely it is to have lost 0 to 3 genes, we can use the Poisson distribution formula Alexandre provided, setting the expected value (l) to 125 genes in the formula to obtain a probability of 1.7 x 10-49. Alternatively, you can use an online Poisson distribution calculator with the upper limit of genes lost (x) = 3 and expected number lost (λ) = 125 to get this answer. This probability is extremely tiny — indeed, it is 0 for all practical purposes. The linear model of Y-chromosome gene loss is obviously wrong.

Should we try a different mathematical model, such as the exponential one that Alexandre tried (and which gave a similar result)?

Not really — as I said, biology is far too complicated and messy. The idealized mathematical distributions we are familiar with simply do not model the real situation here. What actually happens to cause gene loss is based on rare, discrete, low probability events that have to be fixed in the entire population. On very rare occasions, chunks of DNA of different sizes break off and get stuck on other chromosomes (a “translocation”). This has to happen just right, so that the change does not disrupt the cell’s very complex machinery (a “balanced” translocation). While this is extremely unlikely, it can certainly happen — even for regions as large as entire chromosomes. There was a report in fact about a seemingly normal man in China with only 22 pairs of chromosomes instead of the usual 23. One of his chromosomes (not the Y) got stuck to another. But even such a rare event is not enough by itself — the change has to be advantageous enough to spread to the rest of the population, which is a very unpredictable process. Again, these things can happen — in fact, it has happened at least once within the last 7 million years in human evolution for a different chromosome. We know this because our closest primate relatives have 24 pairs of chromosomes (one pair more than we do). A very complex mathematical model could, in theory, be created to describe this translocation process and its probability of success and fixation, but in practice it wouldn’t work. It would need much greater quantitative understanding of extremely low probability processes.

So much for mathematical modeling. Perhaps more relevant, the primate Y chromosome has evolved sophisticated mechanisms using palindromic regions to repair defective regions and therefore keep backup copies of key genes — the lack of which is one of the reasons the Y is supposed to have lost genes in the first place. This may be another reason why gene loss has slowed or stopped, in addition to the fact that genes for maleness all need to be together, and translocations of small numbers of genes away from the Y can no longer be successful.

So it seems the Y chromosome may be safe. Even if it is not, and all its genes get translocated en masse to another chromosome in a single unlikely event, its genes will continue to make males. If they do not, this change will not survive. There are indeed many other ways to create males in nature even in the absence of a Y chromosome, as Emily Singer has reported in Quanta. The Y chromosome method happens to be what our primate lineage ended up with.

As we’ve seen, although the programming analogy has merit, the biological details are far more complicated than we would predict from a logical programming perspective (such as the one Alan described). Nature’s programs are not designed to be easy for humans to understand. Processes like evolutionary algorithms and artificial life have taught us that programs designed by evolution are extremely complicated and sometimes seem to defy logic, but they work. The decompilation of the human genome that I alluded to in the original puzzle column will not be easy.

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Credits : Globenewswire


AxiHub (OTC: JZZI) has engaged Valuesetters to provide $225,000 in software development services over the next 12 months to develop the following platforms/applications:

  • Axi-Financial Web application
  • Axi-Crypto Web application
  • Axi-Hub website

Valuesetters has been tasked with the creation, and maintenance of, software for the web and mobile applications for the various AxiHub websites, along with their content for the Axi-Hub platforms. The platform will allow users and various traded companies to take advantage of the software’s capabilities. Among these is the ability to discuss and access information on various Companies as well as the public markets generally. The content on the message board, as well as the users profile, links to the ChoiceTrade trading platform where users can trade the stocks.  ChoiceTrade is also a ValueSetters’ client.

The software development team plans to build cutting-edge web platforms, websites and mobile applications designed to drive customer engagement, retention and increase customer satisfaction and experience when using the Axi-Hub cloud-based services.

The Axi-Financial and Axi-Crypto Software Platform Launch is designed for Equities, Options, Forex, and all the top Cryptocurrencies. Users will be able to open and fund an account seamlessly, and trade thru an exclusive brokerage marketplace with smart order routing and access to over 20 plus exchanges covering all aspects and needs of this fragmented marketplace. We have been working closely with many industry specialists to best understand the needs of the investor and believe we will provide the best of Price, access, and execution.

The contract calls for a unique and easy-to-navigate platform on the web and mobile devices, which will allow for uninhibited traffic growth and an ideal user experience.  The AxiHub Web applications platform is planned to be 100% innovative, unique and engaging for all parties involved. The web and mobile applications will be developed with the purpose of allowing non-technical users to visit and use the platform from their device and manage all aspects of the experience. Axi-Financial and Axi-Crypto are the first of several platforms that are planned for AxiHub, with a plan to rollout other sites based on user interest and activities.

About ValueSetters: (OTC: VSTR) Led by a team of professional investors and technology specialists, ValueSetters is a publicly- traded boutique advisory firm with unique expertise in helping early stage companies raise capital over the internet. The company also provides technology consulting services as well as strategic advice to help companies grow and evolve to meet the challenges of today’s marketplace.

About AxiHub: (OTC: JZZI) AxiHub’s first mobile app brings together information from email, social media, blogs and message boards into one easy to use platform, utilizing sophisticated technology, based upon the users’ interests and activity. Users can create multiple profiles, quickly and easily.

The information contained herein includes forward-looking statements. These statements relate to future events or to our future financial performance, and involve known and unknown risks, uncertainties and other factors that may cause our actual results to be materially different from any future results, levels of activity, performance or achievements expressed or implied by these forward-looking statements. You should not place undue reliance on forward-looking statements since they involve known and unknown risks, uncertainties and other factors which are, in some cases, beyond our control and which could, and likely will, materially affect actual results, levels of activity, performance or achievements. Any forward-looking statement reflects our current views with respect to future events and is subject to these and other risks, uncertainties and assumptions relating to our operations, results of operations, growth strategy and liquidity. We assume no obligation to publicly update or revise these forward-looking statements for any reason, or to update the reasons actual results could differ materially from those anticipated in these forward-looking statements, even if new information becomes available in the future.


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Credits : Forbes


What is the hardest skill to teach in software engineering?originally appeared on Quora: the place to gain and share knowledge, empowering people to learn from others and better understand the world.

Answer by Brian Knapp, Software Engineer, on Quora:

There is one skill that is exceptionally difficult to teach or implement in any software engineering situation.

To get to that I have to tell a funny story.

Many years ago Google rolled out this incredible new feature. It was an automatic autocomplete dropdown that populated as you type. It was seriously impressive.

Technically, they had to solve a few major issues to even make the feature work.

First, they had to have the UI experience and the related javascript to populate both the autocomplete suggestions in realtime (or close enough I guess).

Second, they needed a sensible list of autocomplete suggestions based on what the user was typing. Given that the user can type literally anything into Google, there are A LOT of variations.

Third, this was potentially going to generate an enormous amount of load on the system. As I recall, the blog post announcing the feature estimated they had to increase their infrastructure by 6x to support the added HTTP requests, database calls, etc…

Doing all of that at Google scale to hundreds of millions of users and having it “just work” is pretty incredible.

Also, for those of you thinking you could implement this in a weekend with React and Elastic Search, neither of those tools really existed at the time.

Anyhow, like I said this was a very cool feature and at the time I was working on a very large nonprofit fundraising website that brought in millions of dollars in donations.

Someone saw what Google was doing and thought we needed to implement that feature on our site. It was useful for looking up events and people a bit faster, so it seemed like a reasonable idea at the time.

We had an expert JavaScript developer on the team, so the front end came together with few issues. On the back end we were using MySQL, so we hacked together a suggestions table. It was a bit gross, but it worked well enough in testing.

So, after maybe a month of development, we launched the feature. It didn’t seem like a big deal until a few hours later…

The site went down.

It looked like we had been DDOS’ed and it took about an hour to roll back everything and get back on-line.

It turns out that the JS was sending an AJAX request on every keystroke. So, if a user quickly typed “John Doe” into the search, it fired off eight HTTP requests. Even worse, the first 7 requests were instantly useless.

It became obvious why Google had to increase their infrastructure to match the feature. The team lead hadn’t considered that at all.

The solution was simple enough, set a timeout to wait at least a half second or second after the last keystroke before doing the autosuggest. Also, we ended up later using ElasticSearch for the search backend once it was available.

The point of this story is two-fold.

One, the website being down for an hour that day probably cost anywhere from $10,000 to $100,000 in donations. That is nearly one FTE salary for a whole year (depending on the position and the actual loss amount).

Two, the entire feature didn’t need to exist. It was a “nice to have” that wasn’t guaranteed to make the app better. Yet, it came with huge downside risk that hit us very hard.

All of this could have been avoided if the team had approached software engineering from a minimalist approach.

The fastest code is the code that doesn’t run at all.

Running fewer SQL queries is better than running more queries.

Fewer features means less complexity.

Fewer libraries means less complexity.

Fewer tools means less complexity.

Complexity costs time.

Complexity costs money.

Doing nothing is better than doing something useless.

A mature software engineer will do everything in their power to avoid complexity and code where possible.

Minimalism in software engineering is nearly impossible to teach.

It’s difficult to build a team around. Most people would rather pile on libraries, gems, new technology, and so on in the pursuit of laziness.

Technical debt is the new normal and everyone is happy to never pay it off.

So, in practicing minimalism in software engineering, that is to say the approach of building the least amount of software with the fewest tools, is not a skill that common or easy to teach.

Programmers love to pile on layers of “stuff”. It’s practically impossible to get around that in an organization larger than 1 person.

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As a Software Engineering Manager, how can I continue growing my technical skills?

A lot of the techniques I recommend may apply equally well for engineers who aren’t making the switch to management, but I do think the risk is higher for managers and so it requires more deliberate investment. Engineers who are spending most of their time writing code are learning by doing, and are constantly reminded of how important it is to learn new things. However, managers may spend most of their time on non-technical issues, and so it’s easy to under-invest in technical knowledge.

The first step is to convince yourself that technical knowledge is important to your career as a manager. Firstly, while I do think that great managers can still support a team well if they are not technical experts in that area, all else equal, more technical knowledge will make you a better manager. For starters, it will be easier for your team to trust you and find you credible. It will also enable you to ensure your team is making the right technical decisions. Next, it will make it easier for you to coach your team, assess how they’re doing, and teach them to grow their own technical skills. Finally, especially in a field like software, there’s a risk that the industry will “drift” and your knowledge will become stale. So even if you’re in good shape now, it will still require constant investment to maintain your level of understanding.

Next, you need to find techniques that work for you. I find a mix of the following to be helpful:

Reading: I probably spend 30-60 minutes per day reading.

Blogs and articles:
I use Feedly primarily for this, and whenever I find anything online (on social media, etc.) that hasn’t made it into my Feedly, I add the source to Feedly. I also basically have a habit that whenever I have some downtime I try to open up my Feedly instead of social media. Hundreds of articles make it into my feeds, and though I only read a small subset of them, it’s still valuable to skim the headlines to see what people are writing about. So this also works a bit like a “discovery” mechanism to help me identify things I can invest more in learning using some of the techniques below. Basically, if I find something that seems like it’s important to my job or to engineers on my team, but I feel like I don’t understand it and can’t coherently explain it, it’s something I’ll find a way to learn more about.
More recently, I’ve tried to find curated or community-based newsletters. To name some of my favorites, I use DiscoverDev, O’Reilly’sFour Short Links, and HNDigest (which is just a daily aggregation of the top threads on HackerNews, that way I don’t have to remember to visit it myself). Sites that have discussion threads attached to links are valuable for supplemental content and to help me gauge the credibility of an article if it’s on a subject I know less about. If you have other recommendations, leave them in the comments and I can add them!
A lot of people I look up to recommend investing in a good Twitter account, but again, I’d rather not have the upkeep of building out my follows (I don’t use Twitter that often). There are some hacks, like using Nuzzel to see someone you look up to’s Twitter feed.
There’s always a bit of a lag between what’s happening in industry and what makes it into books, and they’re also a larger investment (of time and money), so I use them mostly for meaty, more evergreen content. Things like writing clean code, technical architecture, systems design, etc. are great book material. Sometimes, books are also a great way for me to pick up a new technology (I skim the book, then can use it for reference later), but if the technology itself is really new, technical documentation might be a better way to learn.
I also read a lot of non-technical books (and to force myself to understand and remember then, I try to write summaries on Quora).
Quora is also a great place to find content that is a little more authentic and less polished than books or even blog posts. You might think I’m biased since I work here now, but I’ve always found it a valuable resource, even before I joined the company (in fact, it’s one of the main reasons I was so excited to join).
Talking to people:
I try to stay in touch with smart former classmates and colleagues. The primary reason is mostly because I value the relationships directly, but as a side effect, it’s an awesome network to tap into for learning things. Whenever we catch up, I try to ask them questions about how their current company does things, or what they’re learning and if they have any advice for things I can learn.
Another great channel for learning new things is interviews. As a manager, you’re probably interviewing other people from different companies all the time. I use this opportunity to ask people what sort of things they’re learning, how they’ve solved certain technical problems in previous roles, and how they might solve certain technical problems I or my team are facing at the moment. It’s actually a great way to both learn things, and get signal on what sorts of things a candidate finds exciting and how they solve problems. I’m also “meta-learning” as I do this. For instance, if they tell me they used a particular technology to solve a problem, I asked them how they learned about that technology in the first place. You should, of course, make sure you don’t do this in an exploitative way (for instance, don’t ask a candidate to divulge anything that might be sensitive or confidential).
I find it really valuable to carve out time to just write code and try new things. As a manager, I don’t have as much time to do this at work (and also, I don’t want to necessarily be limited by my company’s current projects), so I often do this outside of work. For instance, things that I’ve explored within the past few months include: Amazon’s SageMaker, Terraform, Apache Spark, Apache Kafka, and Golang. Sometimes it’s just getting the tool set up and playing around with it, doing some tutorials, or building a fun side project. Trying things out helps go beyond.
I actually have a whiteboard at home next to my desk where I maintain a list of things I’d like to try out if I had more time. That way, when I do get that random downtime, I use that list. Random downtimes in my past have come in the form of everything from cancelled plans on a weekend, to being stuck at home due to really bad weather, to being under curfew during the Egyptian revolution.
Meetups: I’d like to do more of these, it’s just logistically more difficult than some of my other techniques, and I haven’t cracked the best way to make the most of the time I spend on them.
Conferences: Even though I don’t attend them in person all the time, many conferences will upload videos or summaries of talks given there, and those tend to be really valuable as well.
Find something that works for you. Different people learn in different ways, so if you find it enjoyable, and can incorporate it into your normal work/life time, you’re a lot more likely to stick with it.

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Whether you’re a seasoned Java programmer or a Java neophyte, testing Java applications is important. It ensures your application does what it’s supposed to.

Fortunately, there are plenty of automated testing tools for Java. In fact, there are so many it can be difficult to know which tools to adopt and use. To help solve that dilemma, we’ll discuss some of the most useful automated testing tools for testing various aspects of Java applications.

Types of Java testing tools

It’s important to note not all testing tools are designed to serve the same purpose. There are multiple types of testing associated with Java applications:

  • Unit testing helps you test newly written code before it is integrated into your codebase.
  • Integration testing ensures that new code will not break other parts of the application.
  • Performance and user experience testing verify your application is sufficiently responsive, stable and user-friendly.
  • Security testing helps identify security vulnerabilities in Java code.

(This list is admittedly not completely inclusive. We haven’t mentioned system testing and acceptance testing, for instance, although these overlap somewhat with performance and user experience testing.)

Some automated testing tools for Java support only one type of testing, but many can actually support multiple categories of test automation.

Best automated testing tools for Java

GitHub hosts nearly 2,000 repositories with the term “java testing” in their name. Not all of those correspond to distinct tools, but it gives us an indication of just how many automated Java testing tools are out there.

So which tools should you learn? Here’s a quick guide through the valuable automated testing tools for Java applications.


As its name implies, JUnit is a Java testing tool designed for unit testing. It’s probably the most widely used unit testing tool for Java applications.

On its own, JUnit is not useful for much beyond unit testing. However, you can use it in conjunction with other Java testing frameworks to help automate other types of testing, like integration and acceptance tests. You can even use it in conjunction with Selenium.


TestNG is a general-purpose Java testing tool that supports a range of test categories: unit tests, functional testing, integration tests and more. As such, TestNG is a versatile tool to have in your Java testing arsenal.


JTest is a Java testing tool that has been around for more than twenty years. Like TestNG, it is designed to support a broad set of test types. It’s another useful all-around Java testing tool to have on hand.

What makes JTest particularly interesting, however, are its static analysis features. You can use them to detect performance problems and security vulnerabilities within Java applications. Few other general-purpose Java testing tools extend into these testing categories.

The Grinder

The Grinder is a load testing and performance testing framework for Java. It helps to ensure that Java applications can handle the traffic that deployment teams intend to throw at them. You write your test scripts in Python — specifically, the Jython implementation — which makes Grinder an ideal Java testing tool for performance testing.


Gatling is another Java performance testing tool. It uses a domainspecific language (DSL) for test scripts, which is one major difference between Gatling and The Grinder. Gatling also provides detailed performance testing summary reports. If you’re someone who likes having analytics data summarized in graphs and charts, you’ll like Gatling.


Selenium is the most widely used tool for interface and user experience testing. It supports tests on virtually any of the major web browsers, as well as Linux, macOS and Windows.

Selenium’s major limitation is that it is not designed for testing mobile applications. For that task, you’ll want a tool like Appium or Selendroid, which are based on Selenium.


To test modern Java applications efficiently, you often need to take advantage of mocking. Mocking lets you simulate external resources to see how they interact with your application. You can therefore test your application as if it were running in a real-world environment, but without having to set up an actual environment.

Mockito is one of the leading mocking frameworks for Java testing. Used in conjunction with a unit testing tool like JUnit, Mockito makes it fast and easy to write automated Java tests.


If you want to take advantage of mocking but find Mockito overly complicated or limited in functionality, PowerMock can help. PowerMock is a unit testing framework for Java that extends the functionality of Mockito — as well as EasyMock, another mocking tool. It lets you do things that Mockito can’t, like mocking of static methods.


Arquillian is a somewhat lesser known, but quite interesting, automated testing tool for Java. Arquillian’s goal is to allow developers to test on a large scale without mocking.

Instead, Arquillian lets you write tests that execute in real runtime environments. The idea is to provide the flexibility and efficiency associated with mocking, while delivering the accuracy of tests performed in real environments.This approach can seem a bit unorthodox to old-school Java developers, but it can prove valuable.


The list above is by no means exhaustive. There are many other automated testing tools for Java out there. And the best Java testing tool for you will depend on your needs and preferences, of course. But it always helps to familiarize yourself with some of the handiest tools for various kinds of testing with Java applications.

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NetSuite partner JCurve Solutions (ASX:JCS) has announced the acquisition of the business and assets of Sydney-based Riyo Business for $600,000.

Riyo Business’ software, Riyo, is a platform to provide on-demand or scheduled booking, dispatch and payment (BDP) services to businesses.

JCurve told shareholders on 14 May that the Riyo platform has been successfully piloted with two enterprise customers in Australia.

“The acquisition of the Riyo software platform adds to our growing suite of solutions,” JCurve Solutions CEO Stephen Canning said.

“We are purchasing a robust, scalable, industry standard technical architecture which has been successfully tested through product trials. The software platform could be rolled out in its current state or may be developed into other verticals and integrated into our ERP offerings,” Canning added.

Canning also told shareholders that JCurve expects the acquisition to be Earnings Per Share “EPS” accretive in the short term, to deliver long term shareholder value. He also said that the acquisition is in line with JCurve’s diversification strategy.

“The Riyo software platform is a disruptive technology which has multiple potential commercial applications,” Riyo Founder and CTO Adam Kundrat explained.

“Customers demand convenience, transparency and engagement in a single, mobile experience. The Riyo software platform leverages advanced technology to deliver this experience.”

JCurve posted a net profit before tax loss of $161,864 for the six months ending 31 December 2017. Overall, the Sydney-based cloud technology company closed the half year with net profit after tax (NPAT) of $393,427.

The revenue for the period increased by 11 per cent, to $5 million, as a result of organic growth, the company told shareholders on 21 February.


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