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Senior Foundation Engineer (Drive)

CH - Geneva💼 Full-time🗓 2026-07-20 → 2026-09-26

Core

Design, implement, and maintain core C#/TypeScript/Rust libraries that serve as the backbone for Proton Drive applications, ensuring cross-platform compatibility and optimal performance.

Role type

Senior IC foundation engineer (SDK development)

Builds

Core SDK libraries for Proton Drive (C#, TypeScript, Rust) used by desktop, mobile, and web clients

Domain

Cloud storage / Privacy technology

Deliverable

production ML models | product features

Required skills

Rust (concurrency, ownership models), C#, TypeScript, cross-platform library development, unit testing, integration testing, code review

Preferred skills

Swift bindings, Kotlin bindings, Playwright, Grafana, Prometheus, Sentry, GitLab CI

Technologies

Rust, C#, TypeScript, Swift, Kotlin, Playwright, Grafana, Prometheus, Sentry, GitLab

Responsibilities

Architect and develop core libraries; Ensure cross-platform compatibility; Conduct code reviews and optimization; Collaborate with backend, frontend, mobile, and desktop developers; Develop comprehensive testing strategies; Create and maintain thorough documentation

Seniority

Senior, hands-on IC

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