What today's software developers need to know

Today's software developers don't have to worry about many things that their predecessors used to, like coding to minimize RAM consumption even if it means significantly longer execution time, or WAN connections maxing out at 14.4 kilobits per second. (Although, there may be some out of the fashion skills they could benefit from or that may yet regain relevance.)                          

However, the reverse is also true: there are many new skills and areas of expertise that today's software developers, hardware developers, system and network administrators, and other IT professionals need that simply didn't exist in the past. (Where "the past" could be anything from "more than three months ago" to five, ten, twenty or more years.)

Knowing what you need to know matters, whether you're just starting out as a software developer (or planning to become one), or are a "seasoned" professional who wants to keep your chops fresh so you can stay in, re-enter, or advance.                          

So here are what software developers that should add to their existing knowledge portfolio.

Using libraries

"One thing that strikes me as a new skill is the need to work with massive pre-packaged class libraries and template libraries in all the new languages, like Java or C++ or Python," says consultant and software developer Jeff Kenton. "It used to be that once you knew the language and a small set of system calls and string or math library calls, you were set to program. Now you can write complex applications by stringing library calls together and a little bit of glue to hold them all together. If you only know the language, you're not ready to produce anything."                          

Asynchronous programming and other techniques

"Because of the move to cloud computing mostly through web-based interfaces, we are seeing an emphasis on asynchronous programming," says Itai Danan, founder of Cybernium a software development and web design consulting company. "Ten years ago, this was mostly used by transactional systems such as banks, hotels and airline reservations. Today, all but the simplest applications require asynchronous programming, mostly because of AJAX. This is a very different style of programming -- most things taught about software optimizations do not apply across the network boundary."                          

A breadth of skills

"It's become more important to have a breadth of skills" says Ben Curren, CoFounder, Outright.com, which offers easy-to-use online accounting and bookkeeping software for small businesses. "For example, web developers these days need to understand customers, usability, HTML, CSS, Javascript, APIs, server-side frame works, and testing/QA."
"Programmers don't learn that someone else is going to take care of the code they write," criticizes Sarah Baker, Director of Operations at an Internet media company. "They don't learn about release management, risk assessment of deploy of their code in a infrastructure, or failure analysis of their code in the production environment -- everything that happens after they write the code. They don't learn that a log is a communication to a operations person, and it should help an operations person determine what to do when they read that log."        

Agile and collaborative development methods

"Today's developers need to have awareness of more agile software development processes," says Jeff Langr, owner, Langr Software Solutions, a software consultancy and training firm. "Many modern teams have learned to incrementally build and deliver high-quality software in a highly collaborative fashion, to continually changing business needs. This ability to adapt and deliver frequently can result in significant competitive advantage in the marketplace.           

Developing for deployability, scalability, manageability

"Sysadmins are likely to own the software for much longer than the developers -- what are you doing to make their stewardship pleasant enough that they look forward to your next deployment?" asks Luke Kanies, Founder and CEO of Puppet Labs: "This includes deployability and manageability. New technologies are often much more difficult to deploy on existing infrastructure because developers haven't had time to solve problems like packaging, running on your slightly older production OS, or connecting to the various services you have to use in production."