Proton

Senior Backend Engineer on Proton’s Account Team, building scalable services, APIs, and account capabilities used across Proton’s privacy-focused products. The role combines backend architecture, performance optimization, secure software development, and cross-functional ownership.

Build and improve a privacy-first Chromium-based desktop browser used by millions worldwide. You’ll work in C++ on browser engineering, performance, security hardening, and a high-quality browsing experience.

Lead Proton’s product security function by defining its vision, embedding secure practices across product development, and building a strong security team. The role combines application security expertise with company-wide influence over engineering, product strategy, and delivery.

Join Proton’s Standard Notes team as a Senior Front End Engineer building secure, privacy-first knowledge management and productivity experiences. You’ll shape client-side architecture and deliver encrypted search, organization, editing, and cross-platform functionality with React and TypeScript.

Own and evolve Proton’s web-scale MySQL database platform, improving reliability, performance, automation, and scalability across mission-critical infrastructure. This role combines database operations, platform engineering, observability, and long-term distributed database strategy.

Build privacy-focused Proton Pass and SimpleLogin mobile experiences as a Senior Android Engineer using Kotlin, Jetpack Compose, and Rust. You will own projects end to end, from scoping and architecture through delivery and performance optimization.

Build the shared backend foundations powering Proton’s privacy-focused products. You’ll design libraries, framework layers, and internal services in PHP and Rust while shaping architecture, developer experience, and adoption across the organization.

Build and ship high-quality iOS experiences for Proton’s privacy-first products, including Proton Pass, Payments, and Proton VPN. You’ll work on products used by millions while helping shape scalable mobile architecture and exceptional user experiences.