Software Engineer

CH - Geneva💼 Full-time🗓 2026-07-30 → 2026-09-26

Core

Build a privacy-first internet browser used by millions, focusing on private-by-default browsing, security updates, and high-quality user experience.

Role type

Senior IC browser engineer (Chromium)

Builds

Proton's proprietary privacy-focused browser for desktop (macOS, Windows, Linux)

Domain

Consumer internet / Privacy & Security / Browser Engineering

Deliverable

product features

Required skills

Chromium browser development, C++, large codebase navigation, cross-platform builds, privacy/security hardening, web platform standards

Preferred skills

Rust, open source contribution

Technologies

Chromium, Blink, V8, Rust

Responsibilities

Build and maintain a Chromium-based browser, implement privacy and security hardening features, collaborate with product and design teams, ship timely security updates

Seniority

Senior, hands-on IC

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About Proton

Proton was founded in 2014 by scientists from CERN on a simple truth: privacy is a fundamental human right. Since then, we’ve built the world’s largest encrypted email service (Proton Mail) and expanded into Proton VPN, Proton Drive, Proton Pass, and Proton Calendar—tools used by millions globally to protect their freedom, fight censorship, and keep their data safe. In some situations, Proton has literally helped save lives!