When it comes to hiring engineers, many companies now use a real-time web platform like TechCrunch Disrupt Battlefield and Y Combinator alum HackerRank to see how candidates write their code. That way, interviewers see not only the code candidates write, but also get an insight into the thought process behind it — and how they handle mistakes.

HackerRank relaunched earlier this year when it added this real-time feature and today, it is announcing an interesting new feature to its hiring platform and some key hires that set the company’s hiring platform up for the future.

On the technical side, it is adding real-time audio to the platform. This new feature uses Twilio’s backend to make it very easy for the interviewer and candidate to set up their calls.