Senior Backend Engineer (Foundation)
Core
Design and build shared backend frameworks, libraries, and internal services used across all Proton products to ensure privacy and security.
Role type
Senior Backend Engineer (Foundation)
Builds
Shared PHP/Rust libraries, API layers, and internal services for the Proton ecosystem
Domain
Privacy-focused SaaS, Encrypted Communication, Cryptography
Deliverable
production ML models | product features | infrastructure
Required skills
Modern PHP, Rust, API design, Monorepo architecture, Library evolution, Security mindset
Preferred skills
Domain-Driven Design, Developer tooling, Open source contributions, CI/CD, Applied cryptography
Technologies
PHP, Rust, Monorepo, RFCs
Responsibilities
Design and build shared libraries and framework layers, Turn recurring patterns into abstractions, Improve developer experience and build times, Work closely with product teams to integrate libraries, Define module boundaries and dependency rules in a monorepo, Write documentation and examples for adoption
Seniority
Senior, hands-on IC