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Senior Back-end Developer

Development | Phoenix, AZ | Full Time and Contract

Job Description



Privacy-focused company providing email and communication applications for web and mobile. We are in immediate need to fill a back end developer position to help with the final components and launch of our mobile app for Android and iOS. **This position requires you to be located close to the Phoenix, AZ area.** 


  • Expert-level in: Python 2.7 and 3

  • Some experience in developing software using HTTP and WebSocket/WS programming *preferred 

    • I.e.: TCP/IP (UDP, TCP, socket programming)

  • Strong background in computer science (algorithms, data structure, software design, reliability, maintainability, etc)

  • Experience with SQL and NoSQL databases and message queueing protocols

  • Prior experience building distributed applications at web scale

  • Deep understanding of system and network architecture

  • Strong English communication skills

  • Fluent in Linux

  • Familiarity with HTTP, TLS and DNS

  • Experience working on extremely complex software projects

  • Ability to keep up in an extremely fast-paced environment

Bonus Points:

  • Well versed in security and with a good understanding of security best practices from a programming point of view

  • Expert-level in: C

  • NGINX + UWSGI, Varnish

  • GPG, S/MIME and/or NaCL experience



  • Flexible and casual working environment

  • Startup environment where everyone matters and can make a big impact

  • Work in an ultra high growth environment solving interesting problems, there is never a boring moment

  • Fast growth also means there are many opportunities for rapid advancement

  • Do something meaningful. Our applications protect dissidents, journalists, and activists. Our work literally impacts lives.

  • Be part of something bigger! Millions of people and businesses around the world have embraced our idea of an Internet where privacy and security are the default, and not merely an afterthought. Be part of this revolution that is changing the world!



Our developers frequently transition between front-end, back-end, iOS, Android, and other projects. Our strength comes from our speed and agility, and our ability to refocus the engineering team based on current priorities. You will have the opportunity to work on challenging problems anywhere in our stack. You will be working both internally with the engineering team, and also with remote developers.