Proton

🦄 Eunicorn

Geneva, 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.

Website LinkedIn Careers page

Open roles at a glance

37 live roles15 Software · 8 Platform / DevOps · 5 Mobile · 3 Engineering Mgmt · 2 ML / AI

Roles based in: Barcelona, Geneva, London, London UK, Paris, Prague

Engineering at Proton

Builds in: Security · Infrastructure · Platform · B2C · AI/ML

Works with:RustPythonKubernetesiOSAnsibleGoPHPReactTypeScriptGit

Seniority: 2 Mid-level · 20 Senior · 1 Lead

Publishes salary on 2 of 37 ads · Hiring engineering roles here since June 2026

37 open Engineering roles

Curated from live Proton postings. Click any role for the full brief.

Proton·Geneva, CH +2 locationsGeneva, Switzerland +2 locations·First seen Jul 28

Product Security Engineer

Lead product security for Proton's privacy-focused applications (Mail, VPN, Drive) across Linux infrastructure.

SecuritySecurity

Proton·Geneva, CH +2 locationsGeneva, Switzerland +2 locations·First seen Jul 28

Senior Engineering Manager

Lead engineering teams building mobile applications for millions of users on iOS and Android.

€83k–€106k/yEngineering MgmtLeadSecurity

Proton·Barcelona, ESBarcelona, Spain·First seen Jul 28

Senior Android Software Engineer - Barcelona

Senior Android Software Engineer in Barcelona building privacy-first mobile applications with Proton Pass Payments and VPN.

€60k–€110k/ySoftwareSeniorFinTech

Proton·London, GBLondon, the United Kingdom·First seen Jul 28

Senior Android Software Engineer - London

Senior Android Software Engineer joining Proton in London to build privacy-first mobile applications.

SoftwareSeniorSecurity

Proton·Geneva, CH +1 locationsGeneva, Switzerland +1 locations·First seen Jul 28

Senior Backend Engineer - Platform (Inbox)

Architect core backend systems for Proton Mail/Calendar, improving performance and cost efficiency at scale.

Platform / DevOpsSeniorSecurity

Proton·Geneva, CH +1 locationsGeneva, Switzerland +1 locations·First seen Jul 28

Network Reliability Engineer

Build reliable network infrastructure for millions using Python/Go/Rust automation and Kubernetes controllers.

Network / SystemsMid-levelInfrastructure

Proton·Geneva, CH +1 locationsGeneva, Switzerland +1 locations·First seen Jul 14

Senior Database Platform Engineer

Own and automate the web-scale MySQL database platform serving hundreds of millions of users at Proton in Switzerland.

Platform / DevOpsSeniorDatabaseInfrastructure

Proton·Geneva, CH +1 locationsGeneva, Switzerland +1 locations·First seen Jul 8

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.

Platform / DevOpsSeniorencrypted email serviceVPN

Proton·Geneva, CH +1 locationsGeneva, Switzerland +1 locations·First seen Jul 1

Engineering Manager (Apple) - Geneva

Lead Proton VPN's iOS/macOS engineering, raising quality and reliability for millions.

Engineering MgmtSecurity

Proton·Geneva, CH +1 locationsGeneva, Switzerland +1 locations·First seen Jun 19

Senior Front End Engineer (Docs)

Build a better internet with Proton, a privacy-focused tech company.

SoftwareSeniorB2CSecurity

Proton·Geneva, CH +1 locationsGeneva, Switzerland +1 locations·First seen Jun 19

Site Reliability Engineer - Observability

Build observability infrastructure for millions of privacy-focused users at Proton.

Platform / DevOpsPlatformInfrastructure

Proton·Geneva, CH +1 locationsGeneva, Switzerland +1 locations·First seen Jun 19

Software Engineer - Back-End (Storage)

Build and maintain core storage infrastructure for a privacy-focused tech company serving 100M+ users.

SoftwareInfrastructureSecurity

Proton·Vilnius, LTVilnius, Lithuania·First seen Jun 19

Senior iOS Software Engineer - Vilnius

Build privacy-first iOS apps for millions of users at Proton, a fast-growing, independent tech company.

MobileSeniorB2CSecurity

Proton·Paris, FRParis, France·First seen Jun 19

Senior iOS Software Engineer - Paris

Build privacy-first products for millions of users at Proton.

MobileSeniorSecurity

Proton·Barcelona, ESBarcelona, Spain·First seen Jun 19

Senior iOS Software Engineer - Barcelona

Build privacy-first iOS apps for millions of users at Proton.

MobileSeniorSecurityPlatform

Proton·Geneva, CHGeneva, Switzerland·First seen Jun 19

Senior iOS Software Engineer - Geneva

Build privacy-first iOS apps for millions of users at Proton.

MobileSeniorSecurityPlatform

Proton·London, GBLondon, the United Kingdom·First seen Jun 19

Senior iOS Software Engineer - London

Build privacy-first iOS apps for millions of users at Proton.

MobileSeniorB2CSecurity

Proton·Barcelona, ES +1 locationsBarcelona, Spain +1 locations·First seen Jun 19

Senior Frontend Engineer (Pass)

Build a better internet with Proton Pass, a privacy-focused password manager.

SoftwareSeniorSecurity

Proton·Paris, FRParis, France·First seen Jun 19

Senior Machine Learning Engineer (SOC)

Build ML-driven security detections and automate SOC workflows for Proton's privacy-focused products.

ML / AISeniorSecurityAI/ML

Proton·Geneva, CH +1 locationsGeneva, Switzerland +1 locations·First seen Jun 19

Frontend Engineer (Real-Time Streaming Platform)

Build a private communication platform for millions of users at Proton.

SoftwarePlatformSecurity

Proton·Geneva, CH +1 locationsGeneva, Switzerland +1 locations·First seen Jun 19

Site Reliability Engineer - Infrastructure Systems

Build and automate global infrastructure for a privacy-focused tech company.

Platform / DevOpsInfrastructureSecurity

Proton·Barcelona, ES +1 locationsBarcelona, Spain +1 locations·First seen Jun 19

Senior Backend Engineer (Payments)

Build scalable payment systems for Proton's global privacy ecosystem.

SoftwareSeniorPaymentsB2B SaaS

Proton·Geneva, CH +2 locationsGeneva, Switzerland +2 locations·First seen Jun 19

Software Engineer (Linux)

Build Proton Drive's Linux client from scratch for a privacy-focused company.

SoftwareSeniorprivacycloud storage

Proton·Paris, FRParis, France·First seen Jun 19

Senior DevOps Engineer

Build and scale CI/CD infrastructure for Proton's privacy-focused products.

Platform / DevOpsSeniorPlatformInfrastructure

Proton·Barcelona, ES +3 locationsBarcelona, Spain +3 locations·First seen Jun 19

Android Test Automation Engineer (Native App)

Build privacy-first Android apps, trusted by millions globally, with a focus on test automation.

QA / TestMid-levelB2CSecurity

Proton·Geneva, CH +1 locationsGeneva, Switzerland +1 locations·First seen Jun 19

Machine Learning Engineer

Build agentic AI systems for privacy-focused tech company Proton.

ML / AIAI/MLSecurity

Proton·Taipei, TW +2 locationsTaipei, Taiwan +2 locations·First seen Jun 19

Frontend Engineer (B2B Products)

Build privacy-first B2B products for millions of users at Proton.

SoftwareB2B SaaSSecurity

Proton·Barcelona, ES +1 locationsBarcelona, Spain +1 locations·First seen Jun 19

Software Engineer, Windows (VPN)

Build privacy-focused Windows VPN apps for millions of users at Proton.

SoftwareSecurity

Proton·London, GB +1 locationsLondon, the United Kingdom +1 locations·First seen Jun 19

Senior Software Engineer (Inbox Desktop)

Build Proton Mail desktop apps for privacy-focused users.

SoftwareSeniorB2B SaaSSecurity

Proton·Prague, CZ +2 locationsPrague, Czechia +2 locations·First seen Jun 19

Backend Engineer - Marketing Technology

Build Proton's marketing technology stack using Python and PHP for millions of privacy-conscious users.

SoftwareMarTechB2B SaaS

Proton·Geneva, CH +1 locationsGeneva, Switzerland +1 locations·First seen Jun 19

Frontend Engineer (Lumo)

Build privacy-first AI interfaces for Proton's Lumo AI, empowering millions globally.

SoftwareAI/ML

Proton·Geneva, CH +1 locationsGeneva, Switzerland +1 locations·First seen Jun 19

Engineering Manager (Apple) - Barcelona

Lead Proton VPN's iOS/macOS engineering team to enhance privacy and reliability.

Engineering MgmtSecurity

Proton·Geneva, CH +1 locationsGeneva, Switzerland +1 locations·First seen Jun 19

Senior Software Engineer, Windows (Drive)

Build privacy-focused Windows applications for millions of users at Proton.

SoftwareSeniorSecurity

Proton·Geneva, CH +1 locationsGeneva, Switzerland +1 locations·First seen Jun 19

Site Reliability Engineer - Application Edge

Build and scale privacy-focused infrastructure for millions of users at Proton.

Platform / DevOpsPlatformInfrastructure

Proton·Geneva, CH +1 locationsGeneva, Switzerland +1 locations·First seen Jun 19

Senior Systems & Reliability Engineer (VPN)

Build and maintain secure VPN infrastructure for millions protecting privacy globally.

Platform / DevOpsSeniorInfrastructureSecurity

Proton·Geneva, CH +3 locationsGeneva, Switzerland +3 locations·First seen Jun 19

Fullstack Software Engineer (Email Security & Anti-Abuse)

Build privacy-focused internet tools for millions, tackling email security and anti-abuse challenges.

SoftwareSecurityAI/ML

Proton·Barcelona, ES +3 locationsBarcelona, Spain +3 locations·First seen Jun 19

Senior iOS Test Automation Engineer (Native App)

Build and automate testing for Proton's privacy-focused iOS apps, ensuring quality for millions.

QA / TestSeniorSecurity

Archived roles (7)

No longer open on Proton's site. Kept for reference — saved archived roles stay in your dashboard.

Proton·Barcelona, ES +3 locationsBarcelona, Spain +3 locations·First seen Jun 19

Linux Test Automation Engineer

Build privacy-focused Linux software with Proton, protecting millions globally.

ArchivedOnsiteQA / TestMid-levelSecurity

Proton·Geneva, CH +2 locationsGeneva, Switzerland +2 locations·First seen Jun 19

Frontend Engineer (Inbox Web)

Build Proton Mail and Calendar web clients for millions of privacy-conscious users.

ArchivedHybridSoftwareprivacysecurity

Proton·Geneva, CH +1 locationsGeneva, Switzerland +1 locations·First seen Jun 19

Frontend Engineer (Accounts)

Build privacy-first web experiences for 100M+ users at Proton.

ArchivedHybridSoftwareB2B SaaSPlatform

Proton·Barcelona, ES +2 locationsBarcelona, Spain +2 locations·First seen Jun 19

Backend Engineer (Payments)

Build payment features for millions of privacy-focused users at Proton.

ArchivedOnsiteSoftwarePaymentsB2B SaaS

Proton·Prague, CZPrague, Czechia·First seen Jun 19

Database Platform Engineer

Scale Proton's database platform for millions of privacy-focused users.

ArchivedHybridPlatform / DevOpsMid-levelInfrastructurePlatform

Proton·Barcelona, ES +1 locationsBarcelona, Spain +1 locations·First seen Jun 19

Senior Android Engineer (Pass)

Build privacy-focused Android apps with Jetpack Compose and Rust for Proton.

ArchivedHybridMobileSeniorB2CSecurity

Proton·Geneva, CH +4 locationsGeneva, Switzerland +4 locations·First seen Jun 19

Backend Engineer (B2B Products)

Build privacy-first B2B products for millions of users at Proton.

ArchivedOnsiteSoftwareB2B SaaSSecurity