5 hours ago
Barcelona, SpainSenior
Responsibilities
- Build resilient, massively scalable backend solutions for millions of Proton VPN users.
- Collaborate with backend engineers, architects, client application developers, and product management to meet business and reliability requirements.
- Document backend capabilities and proper integration patterns for Proton VPN clients.
- Debug and repair critical systems, including file-revision cleanup and user-quota recovery.
- Lead a team initiative from discovery through production.
Requirements
- Experience with PHP-based entry points to a backend software stack and scalable solution development.
- Experience with profiling methods and tools.
- Solid understanding of SQL, preferably MySQL, and data modeling.
- Solid understanding of Redis or other caching technologies.
- Solid understanding of security best practices and HTTP/REST APIs, including developing and consuming web APIs.
- High-level understanding of cryptography concepts, including key exchange and symmetric versus asymmetric encryption.
- Preferred qualifications include SRE or on-call operations, Docker or similar containerization technologies, Grafana, OpenTelemetry, Python, Rust, and OpenAPI or similar API documentation frameworks.
Benefits
- Stock options and ownership opportunity.
- Health coverage, retirement options, generous leave, and wellness support.
- Hardware and software needed to perform the work.
- Learning and development investment with substantial ownership from day one.
- Primarily in-person collaboration at offices including Geneva, Zürich, Barcelona, and London.
- Free lunch and snacks at offices.
- Public transport, bike allowance, or parking support.
- Flexible working hours and scheduling.
About Proton
Proton builds a suite of privacy-focused, open-source services including Proton Mail, Proton VPN, Drive, Calendar, and Pass for individuals and organizations. The company operates a subscription-based model without ads or data mining, and is governed by the Swiss non-profit Proton Foundation. Founded in 2014 by scientists with CERN ties and headquartered in Geneva, it reports over 100 million user accounts worldwide.