Senior Backend Engineer

Join Proton and build a better internet where privacy is the default

At Proton, we believe that privacy is a fundamental human right and the cornerstone of democracy.

As our new Senior Backend Engineer, you'll join the team responsible for Proton Pass and SimpleLogin.

What you'll do

• Code in our shared backend framework
• Work closely with a group of skilled backend engineers and architects to build resilient, massively-scalable solutions for millions of people to rely on
• Collaborate with teams of client application developers to ensure that the backend meets critical business and reliability requirements
• Document backend capabilities and their proper use so that all Proton clients can implement correctly-functioning solutions
• Improve vital systems such as the systems responsible for cleaning up file revisions and returning quota to users

What you'll bring

• Strong experience in backend development
• Experience building scalable solutions
• Skills in OOP and SOLID
• Fluency in at least one strongly typed language
• Solid understanding of SQL (MySQL preferred) and data modelling
• Knowledge of unit and functional testing
• Solid understanding of security best practices
• Understanding of HTTP/REST, including both developing and consuming web-based APIs

 

Bonus points for

• Operational experience, such as SRE or on-call, demonstrating ability to diagnose and troubleshoot complex problems for critical systems
• Experience with Docker or similar containerisation technologies
• Experience with CI/CD (Gitlab, Jenkins, etc.)
• Experience with backend web frameworks (Symfony, Spring, .NET)
• Experience with modern PHP, Rust and Python
• High-level understanding of cryptography concepts such as key exchange and the difference between symmetric and asymmetric encryption
• Experience with DDD (Domain-Driven Design) and other enterprise patterns
• Experience with metrics graphing/analysis toolkits such as Grafana and OpenTelemetry
• Solid understanding of Redis or other caching technologies
• Experience with OpenAPI specs or other API documentation frameworks

Even if you don’t meet all the requirements listed above but feel you could still be a great fit, please do apply.