Senior Back-End Engineer (API)

Job description

A better internet, where privacy is the default, is possible. Building this better internet might seem daunting or even unthinkable, but at Proton, this 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, Proton Mail, is now the world’s largest encrypted email service. Subsequent Proton products, such as Proton VPN, Proton Calendar, and Proton Drive, give our users full control over how and with whom their data is shared.
Today, Proton makes privacy universally accessible. Journalists from outlets like The Guardian and The New York Times, some of the world’s largest organizations, and people in more than 180 countries have signed up for over 70 million accounts. Our diverse and dynamic team is made up of more than 400 members representing over 40 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.
Join 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

Our Payments team is looking for Senior Back-End Engineer to help build efficient, testable, and well-documented code that delivers real business value.

The Payments team is focused on creating technical implementations that are shared across all Proton products: Proton Mail, Proton Calendar, Proton Drive, and Proton VPN. The reliability of our core codebase is crucial for the consistent and smooth functioning of all our products.

We aim to deliver the best experience for people who care about their security and privacy.

Enjoy the benefits of a flexible work environment that values independent contributors, as well as working in teams using Agile workflows.

What you will do

  • Design, build, and maintain large-scale products
  • Ensure that all parts of the technical design are correctly incorporated
  • Write high quality, tested, and documented code
  • Follow and improve high engineering standards and best practices

Job requirements

  • At least 4 years of experience in designing and building highly scalable systems
  • Fluent English language and strong communication skills
  • Excellent knowledge of object-oriented programming paradigm (SOLID principles, design patterns)
  • Good knowledge of SQL
  • Experience in code testing
  • Good understanding of web technologies (Rest API, HTTP, HTML, etc.)
  • Experience with modern PHP 
  • Operated as Tech Lead for a minimum of 2 years, with teams ranging in size from 4 to 6 engineers

Bonus points for:

  • Experience with CI and test automation

  • Experience with Linux and containers (such as Docker or Kubernetes)

  • Experience with DevOps practices and implementations

  • Professional experience with a web framework (Symfony, Spring, ASP.NET, etc.)

  • Professional experience with statically typed language

  • Being active in the open-source community

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 supporting organizations that advance the same goals as us. Proton is free, open source, neutral, independent, and community first, while remaining financially sustainable.
  • Work with smart and dedicated people - Our team is diverse, collaborative, and tight-knit, with people coming from all walks of life. Many members of our team spent time at the world’s top academic institutions, including MIT, Harvard, Stanford, Princeton, Caltech, Cambridge, and ETH.
  • Join a strong brand - Our encrypted email service – Proton Mail - 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 companies. 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.
  • Benefits – these vary by location and type of contract but expect support on your vacation, parental leave, refreshment if working from the office, learning and development opportunities, equity for shared success, flexible working hours and remote work, company events, and team-building activities.

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. You will receive emails from the email address or other addresses on the domain as part of the recruitment process.

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 where Proton employs the relevant candidate. 

By applying to a role at Proton, you acknowledge that we will process and store your personal data for at least the duration of the hiring process and as necessary to enter a contractual relationship with you.