Senior Backend Engineer, Proton

• We expect you to be customer-centric, continuously learning, passionate about technology and usability
• You are an adept at turning technical complexities into seamless user experiences. Effective teamwork, collaboration with Product, Design, APIs, and your team, and data-driven decision-making are essential aspects of this role
• Proven experience with back-end development
• Expertise in building scalable, high-performance solutions
• Proficiency with profiling techniques and performance optimization tools
• Experience leading a team initiative from discovery to production
• Strong understanding of SQL (MySQL preferred) and data modeling best practices
• Familiarity with Redis or other caching technologies for performance optimization
• Knowledge of security best practices and experience implementing secure software solutions
• In-depth understanding of HTTP/REST, including both the development and consumption of web-based APIs
• Solid grasp of cryptographic concepts, including key exchange, and the distinction between symmetric and asymmetric encryption
• Experience with Python and/or Rust
• 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 still apply

Desirable

• Proton Account team owns capabilities throughout the lifecycle of our customer journeys, from the critical acquisition and signup step, to account management while utilizing our services, to effective promotions and checkout flows. The Account Team is one of the key engineering teams that are centrally positioned to contribute within all Proton's products
• Internally our backend code is in general based on PHP/Symfony, our frontend is based on React, our mobile code is based on Kotlin (on Android) and on Swift (on iOS), with a growing shared codebase in Rust
• All our client-code is open-source and GPL3
• Our infrastructure runs on Kubernetes
• Everything runs on premise in Proton's data-centers
• To organize our work we use classic tools such as Jira and Confluence
• Contributing to the definition of a new, solid architecture, for components that will be used in all Proton products
• With strong notions of architecture and mobile experience, define powerful APIs that enable the apps to be feature rich, accommodate their different code patterns, yet let account ship features at high velocity without integration issues
• The account team is growing fast, which will create future opportunities to lead and take ownership of significant areas of the system
• As a Backend Engineer you will play a crucial role in developing Proton's most vital services and serving over 100 million users worldwide