Software Developer, VoIP (WhatsApp)

(Menlo Park, CA)

WhatsApp is the world’s fastest growing communication company with over 1 billion active users globally. We help bring friends, families, communities, soccer groups, doctors, storm chasers, and million others closer. We are just getting started. We are looking for the best individuals to grow and support this incredible community of users. WhatsApp has been ranked as one of the Top 25 Most downloaded apps in over 100 countries on the App Store and has received over 1 Billion installs on Google Play. Our spacious office is located in the heart of downtown Mountain View.

Join a world-class engineering-driven company, where you’ll have instant impact from day one. WhatsApp has an open culture and flat organization. Every engineer is literally sitting a few steps away from the founders. As a member of our engineering team you will tackle challenging issues of scale, reliability and security while delivering a delightful, simple user experience to a global user base. If you love writing code, hate tons of meetings, then come talk to us.


  • The person in this role would help make VoIP calls reliable over varying devices and networking conditions including high packet loss and high latency

Minimum Qualifications

  • B.S. Computer Science or related field
  • 2+ years of experience in building applications on mobile devices specifically windows phone platform
  • Prior experience with VoIP on mobile devices specifically Windows Phone
  • Five or more years of hands-on networking experience
  • Network design experience
  • Understanding of subnetting and network segmenting
  • Knowledge of VoIP and SIP messaging
  • Understanding of various network protocols used in real time applications and how to interpret observations in field to make improvements to networking components

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