Java, Python, SQL, C++, and JavaScript programming skills are most in demand in the workplace, says the HackerRank developer skills report.

HackerRank, a technical recruiting platform and former TechCrunch Disrupt Battlefield finalist, today announced it is expanding into mobile with the launch of DroidRank.

The top programming languages that developers want to learn next are Go and Python, according to a survey by developer skills-matching platform HackerRank.

HackerRank is clearly trying to make the application process more transparent. Most of the companies that advertise on the platform also disclose the salary range for a given job, for example.

Overall, HackerRank’s survey highlights the great opportunities available for software development talent and for the companies vying to hire them.