Proton·Genève, CHGenève, Switzerland·
Product Security Engineer
Lead product security for Proton's privacy-focused applications (Mail, VPN, Drive) across Linux infrastructure.
NewOnsiteOtherSecurity
Proton
🦄 EunicornGeneva, Switzerland · Founded 2014 · 51-200 staff
SoftwareSaaSFinTech
Proton is a privacy-focused technology company that provides encrypted email, VPN, cloud storage, and other privacy-by-default services. With over 100 million users, Proton enables individuals and organizations to maintain privacy and security online through end-to-end encryption and zero-knowledge architecture.
Open roles at a glance
35 live roles13 Software Eng · 8 Platform · 5 Mobile · 3 Eng Mgmt · 2 ML/AI· 13 remote-friendly
Roles based in: Barcelona, Geneva, Genève, London, Paris, Prague
Engineering at Proton
Builds in: Security · Infrastructure · Platform · B2C · AI/ML
Works with:RustPythonKubernetesiOSAnsibleGoPHPReactTypeScriptGit
Seniority: 1 mid · 17 senior
Hiring engineering roles here since June 2026
35 open Engineering roles
Curated from live Proton postings. Click any role for the full brief.
Proton·Remote · 2Remote · 2 countries·
Senior Engineering Manager
Lead engineering teams building mobile applications for millions of users on iOS and Android.
NewRemotePMSecurity
Proton·Geneva, CHGeneva, Switzerland·
Senior Backend Engineer - Platform (Inbox)
Architect core backend systems for Proton Mail/Calendar, improving performance and cost efficiency at scale.
NewOnsitePMSecurity
Proton·Geneva, CHGeneva, Switzerland·
Network Reliability Engineer
Build reliable network infrastructure for millions using Python/Go/Rust automation and Kubernetes controllers.
NewOnsitePMInfrastructure
Proton·Geneva, CHGeneva, Switzerland·
Senior Database Platform Engineer
Own and automate the web-scale MySQL database platform serving hundreds of millions of users at Proton in Switzerland.
HybridPMSeniorDatabaseInfrastructure
Proton·Geneva, CHGeneva, Switzerland·
Senior Data Platform Engineer
Drive end-to-end data engineering and platform initiatives at Proton's custom on-premise data ecosystem in Switzerland or Barcelona.
OnsitePMSeniorencrypted email serviceVPN
Proton·Geneva, CHGeneva, Switzerland·
Engineering Manager (Apple) - Geneva
Lead Proton VPN's iOS/macOS engineering, raising quality and reliability for millions.
HybridOtherSecurity
Proton·Geneva, CHGeneva, Switzerland·
Senior Front End Engineer (Docs)
Build a better internet with Proton, a privacy-focused tech company.
HybridOtherSeniorB2CSecurity
Proton·Geneva, CHGeneva, Switzerland·
Site Reliability Engineer - Observability
Build observability infrastructure for millions of privacy-focused users at Proton.
OnsiteOtherPlatformInfrastructure
Proton·Geneva, CHGeneva, Switzerland·
Software Engineer - Back-End (Storage)
Build and maintain core storage infrastructure for a privacy-focused tech company serving 100M+ users.
HybridOtherInfrastructureSecurity
Proton·Vilnius, LTVilnius, Lithuania·
Senior iOS Software Engineer - Vilnius
Build privacy-first iOS apps for millions of users at Proton, a fast-growing, independent tech company.
OnsiteOtherSeniorB2CSecurity
Proton·Paris, FRParis, France·
Senior iOS Software Engineer - Paris
Build privacy-first products for millions of users at Proton.
OnsiteOtherSeniorSecurity
Proton·Barcelona, ESBarcelona, Spain·
Senior iOS Software Engineer - Barcelona
Build privacy-first iOS apps for millions of users at Proton.
OnsiteOtherSeniorSecurityPlatform
Proton·Geneva, CHGeneva, Switzerland·
Senior iOS Software Engineer - Geneva
Build privacy-first iOS apps for millions of users at Proton.
OnsiteOtherSeniorSecurityPlatform
Proton·London, GBLondon, the United Kingdom·
Senior iOS Software Engineer - London
Build privacy-first iOS apps for millions of users at Proton.
OnsiteOtherSeniorB2CSecurity
Proton·Barcelona, ESBarcelona, Spain·
Senior Frontend Engineer (Pass)
Build a better internet with Proton Pass, a privacy-focused password manager.
OnsiteOtherSeniorSecurity
Proton·Paris, FRParis, France·
Senior Machine Learning Engineer (SOC)
Build ML-driven security detections and automate SOC workflows for Proton's privacy-focused products.
OnsiteOtherSeniorSecurityAI/ML
Proton·Geneva, CHGeneva, Switzerland·
Frontend Engineer (Real-Time Streaming Platform)
Build a private communication platform for millions of users at Proton.
OnsiteOtherPlatformSecurity
Proton·Geneva, CHGeneva, Switzerland·
Site Reliability Engineer - Infrastructure Systems
Build and automate global infrastructure for a privacy-focused tech company.
OnsiteOtherInfrastructureSecurity
Proton·Barcelona, ESBarcelona, Spain·
Senior Backend Engineer (Payments)
Build scalable payment systems for Proton's global privacy ecosystem.
OnsiteOtherSeniorPaymentsB2B SaaS
Proton·Geneva, CHGeneva, Switzerland·
Software Engineer (Linux)
Build Proton Drive's Linux client from scratch for a privacy-focused company.
OnsiteOtherSeniorprivacycloud storage
Proton·Paris, FRParis, France·
Senior DevOps Engineer
Build and scale CI/CD infrastructure for Proton's privacy-focused products.
OnsiteOtherSeniorPlatformInfrastructure
Proton·Barcelona, ESBarcelona, Spain·
Android Test Automation Engineer (Native App)
Build privacy-first Android apps, trusted by millions globally, with a focus on test automation.
HybridOtherMidB2CSecurity
Proton·Geneva, CHGeneva, Switzerland·
Machine Learning Engineer
Build agentic AI systems for privacy-focused tech company Proton.
OnsiteOtherAI/MLSecurity
Proton·Geneva, CHGeneva, Switzerland·
Frontend Engineer (B2B Products)
Build privacy-first B2B products for millions of users at Proton.
OnsiteOtherB2B SaaSSecurity
Proton·Barcelona, ESBarcelona, Spain·
Software Engineer, Windows (VPN)
Build privacy-focused Windows VPN apps for millions of users at Proton.
HybridOtherSecurity
Proton·London, GBLondon, the United Kingdom·
Senior Software Engineer (Inbox Desktop)
Build Proton Mail desktop apps for privacy-focused users.
HybridOtherSeniorB2B SaaSSecurity
Proton·Prague, CZPrague, Czechia·
Backend Engineer - Marketing Technology
Build Proton's marketing technology stack using Python and PHP for millions of privacy-conscious users.
OnsiteOtherMarTechB2B SaaS
Proton·Geneva, CHGeneva, Switzerland·
Frontend Engineer (Lumo)
Build privacy-first AI interfaces for Proton's Lumo AI, empowering millions globally.
OnsiteOtherAI/ML
Proton·Geneva, CHGeneva, Switzerland·
Engineering Manager (Apple) - Barcelona
Lead Proton VPN's iOS/macOS engineering team to enhance privacy and reliability.
HybridOtherSecurity
Proton·Geneva, CHGeneva, Switzerland·
Senior Software Engineer, Windows (Drive)
Build privacy-focused Windows applications for millions of users at Proton.
HybridOtherSeniorSecurity
Proton·Geneva, CHGeneva, Switzerland·
Site Reliability Engineer - Application Edge
Build and scale privacy-focused infrastructure for millions of users at Proton.
HybridOtherPlatformInfrastructure
Proton·Geneva, CHGeneva, Switzerland·
Senior Systems & Reliability Engineer (VPN)
Build and maintain secure VPN infrastructure for millions protecting privacy globally.
OnsiteOtherSeniorInfrastructureSecurity
Proton·Geneva, CHGeneva, Switzerland·
Fullstack Software Engineer (Email Security & Anti-Abuse)
Build privacy-focused internet tools for millions, tackling email security and anti-abuse challenges.
HybridOtherSecurityAI/ML
Proton·Barcelona, ESBarcelona, Spain·
Senior iOS Test Automation Engineer (Native App)
Build and automate testing for Proton's privacy-focused iOS apps, ensuring quality for millions.
HybridOtherSeniorSecurity
Archived roles (7)
No longer open on Proton's site. Kept for reference — saved archived roles stay in your dashboard.
Proton·Barcelona, ESBarcelona, Spain·
Linux Test Automation Engineer
Build privacy-focused Linux software with Proton, protecting millions globally.
ArchivedOnsiteOtherMidSecurity
Proton·Geneva, CHGeneva, Switzerland·
Frontend Engineer (Inbox Web)
Build Proton Mail and Calendar web clients for millions of privacy-conscious users.
ArchivedHybridOtherprivacysecurity
Proton·Geneva, CHGeneva, Switzerland·
Frontend Engineer (Accounts)
Build privacy-first web experiences for 100M+ users at Proton.
ArchivedHybridOtherB2B SaaSPlatform
Proton·Barcelona, ESBarcelona, Spain·
Backend Engineer (Payments)
Build payment features for millions of privacy-focused users at Proton.
ArchivedOnsiteOtherPaymentsB2B SaaS
Proton·Prague, CZPrague, Czechia·
Database Platform Engineer
Scale Proton's database platform for millions of privacy-focused users.
ArchivedHybridOtherMidInfrastructurePlatform
Proton·Barcelona, ESBarcelona, Spain·
Senior Android Engineer (Pass)
Build privacy-focused Android apps with Jetpack Compose and Rust for Proton.
ArchivedHybridOtherSeniorB2CSecurity
Proton·Geneva, CHGeneva, Switzerland·
Backend Engineer (B2B Products)
Build privacy-first B2B products for millions of users at Proton.
ArchivedOnsiteOtherB2B SaaSSecurity