Senior Foundation Engineer (Drive) – C# / TypeScript / Rust

CertifiedDevs; Genf; Vor Ort; CHF 140.000 - 210.000; Vollzeit

Benefits dieser Stelle

Competitive salary

Onsite in Geneva or London

Privacy-focused mission and nonprofit-

Zusammenfassung

Proton Drive is seeking a skilled software engineer to join the Foundation team in Geneva (preferred) or London, to build the core Drive SDK powering all Proton Drive clients across web, mobile, and desktop. You will work daily in C#, TypeScript, and Rust, with Swift and Kotlin bindings for mobile, contribute to a crypto-model revamp, and design libraries that ensure security and reliability.

This onsite role offers a privacy-focused environment with a profitable, nonprofit-backed mission and a

Qualifikationen

• 5+ years of professional software engineering experience.
• Strong Rust expertise: ownership, concurrency, performance.
• Experience building libraries for client applications (web/mobile/desktop).
• C# and TypeScript proficiency.
• Geneva or London based (onsite role).

Aufgaben

• Build and maintain the core Drive SDK powering every Proton Drive client (web, mobile, desktop).
• Work daily in C#, TypeScript, and Rust with Swift and Kotlin mobile bindings.
• Contribute to the crypto model revamp and next-gen Rust SDK.
• Design and build libraries for client applications across platforms.
• Ensure correctness, security, and reliability of foundational cryptographic infrastructure.

Kenntnisse

Rust

C#

TypeScript

Ownership

Concurrency

Tools

Swift bindings

Kotlin bindings

Jobbeschreibung

Join Proton Drive's Foundation team to build the core SDK that ships to every Drive client. Daily work in C#, TypeScript, and Rust with Swift and Kotlin bindings for mobile. Foundational work: a crypto model revamp plus a Rust-based next-gen SDK on the roadmap. Geneva (preferred) or London.

Responsibilities

• - Build and maintain the core Drive SDK powering every Proton Drive client (web, mobile, desktop)
• - Work daily in C#, TypeScript, and Rust with Swift and Kotlin mobile bindings
• - Contribute to the crypto model revamp and next-gen Rust SDK
• - Design and build libraries for client applications across platforms
• - Ensure correctness, security, and reliability of foundational cryptographic infrastructure

• Competitive salary
• Onsite in Geneva or London
• Work on privacy infrastructure used by 100M+ users
• Profitable, no VC control — mission can't be changed by investors
• Majority owned by nonprofit Proton Foundation

Requirements

• - 5+ years of professional software engineering experience
• - Strong Rust expertise: ownership, concurrency, performance
• - Experience building libraries for client applications (web/mobile/desktop)
• - C# and TypeScript proficiency
• - Geneva or London based (onsite role)

About Proton

Proton builds the privacy-first alternative to Big Tech: Mail, VPN, Drive, Pass, Calendar, and Lumo AI. Profitable, no VC control, and majority owned by the nonprofit Proton Foundation — so no one can force a change in mission. 100M+ users worldwide. The Drive Foundation team builds the core SDK powering every Proton Drive client.

Company Size

Privacy Tech / Cybersecurity / Open Source