Golang/C++ Engineer

Job description

A better internet is possible, one that empowers people to choose how their personal information is used. This might seem daunting, or even impossible, but at Proton, building this better internet is what we do every day.


Proton was founded in 2014 by a group of scientists who met at the European Organization for Nuclear Research (CERN). Our first product, ProtonMail, is now the world’s largest encrypted email service. Subsequent Proton products, such as ProtonVPN, Proton Calendar, and Proton Drive, use end-to-end encryption that gives our users full control over how and with whom their data is shared.


Today, Proton is making privacy universally accessible to more than 50 million registered users, including journalists, some of the world’s largest organizations, and people in more than 180 countries. Our diverse and dynamic team is made up of more than 400 members representing over 30 different nationalities. While we are based in Geneva, Switzerland, we have offices in Zurich, Prague, London, Vilnius, Skopje, Taipei, and many more employees working remotely around the world.


New York Times journalists, some of the world’s largest corporations, and millions of ordinary citizens use our products so they can choose who, if anyone, sees their information. Join us at one of Europe’s fastest-growing companies to help us solve challenging problems and build new products that will reach hundreds of millions of people. We want to create more than just one of the world’s most impactful tech companies, we want to create a new internet that serves the interests of all people. We need you, your voice, your ideas, and your ambition to make it happen.



Purpose of the role

We are looking for a desktop application developer for Proton Bridge. Proton Bridge integrates your ProtonMail account with popular email clients, such as Microsoft Outlook, Mozilla Thunderbird, or Apple Mail. Think of Proton Bridge as a “back-end hub” for your email accounts —you will be working mostly with Golang, but you can expect a mixed stack. The application runs in the background by seamlessly encrypting and decrypting messages as they enter and leave your computer. Proton Bridge is compatible with most email clients supporting IMAP and SMTP protocols. You can read more about the project here: https://github.com/ProtonMail/proton-bridge


What you will do

  • Automate native email client interaction with Proton Bridge
  • Develop and maintain the interface between Proton Bridge and Proton API
  • Take an active part in designing and developing new features
  • Analyze the MIME structure of messages
  • Optimize the performance of local servers

Job requirements

  • Experience with object-oriented compiled languages, such as Golang, C++, C#, or Rust 
  • Expert knowledge of Golang is not a must as long as you’re a quick learner
  • Experience developing and testing desktop applications
  • Comfortable using collaboration and developer efficiency tools such as git, gitlab CI, etc.
  • An understanding of the principles of UI design and user experience

Technologies we use and teach

  • Languages: mainly Golang, C++, C#, make, bash
  • Frameworks: Qt with QML
  • Platforms: Windows, macOS, Linux
  • Collaboration tools: git, gitlab, JIRA, Confluence


Why you should join Proton

  • Be part of a movement - Proton is not just a product or service but a community-driven movement united by a shared vision of online freedom. Our services are open source, audited, and supported by community contributions. We give back to our community by maintaining core encryption libraries and by supporting other organizations furthering the same goals as us.
  • Work with smart and dedicated people - Our team is diverse, collaborative, and tight-knit with people coming from all walks of life, including many of the world’s top academic institutions and organizations, such as MIT, Harvard, Stanford, Caltech, Cambridge, and ETH.
  • Join a strong brand - Our encrypted email service - ProtonMail - has grown to be a staple of online security and privacy. Proton has been featured in multiple popular television and film productions, such as Mr. Robot, Knives Out, Sounds of Metal, and more.
  • Grow with us - We’re one of Europe’s fastest-growing startups, doubling in size every year. Our growth gives you limitless career and educational opportunities as well as the opportunity to work side-by-side with many world-leading experts in their fields.
  • Have your voice heard - We value your opinion and encourage you to speak up and share your ideas and thoughts. At Proton, no problem is someone else’s problem. We collectively strive to do the right thing and be the undisputed best in the world at everything we do.


Proton uses the Recruitee recruitment platform for a more effective hiring process and a better candidate experience. Your data will always be kept confidential and is not shared with any third parties. Keep in mind that you will receive emails from the email address careers@protonmail.recruitee.com or other addresses on the protonmail.recruitee.com domain.

Proton does not accept unsolicited resumes from any sources other than directly from a candidate. Proton will not pay a fee for any placement resulting from the receipt of an unsolicited offer, even in a situation when the relevant candidate is employed by Proton.