Senior Systems & Reliability Engineer (VPN)

CH - Geneva💼 Full-time💰 $61,000–$116,000🗓 2026-07-28 → 2026-09-26

Core

Design, implement, and maintain robust global VPN infrastructure to ensure secure, private internet access in restrictive environments.

Role type

Senior Systems & Reliability Engineer (VPN Infrastructure)

Builds

Global distributed network of thousands of servers supporting Proton VPN

Domain

Cybersecurity / Network Infrastructure / Privacy Tools

Deliverable

production ML models | infrastructure

Required skills

Linux internals, Ansible, Python, VictoriaMetrics, Grafana, network security

Preferred skills

UDP/TCP/IP protocols, OpenVPN, WireGuard, cryptography (TLS/PKI), high-availability architecture, censorship resistance

Technologies

Debian, NFtables, Ansible, Python, VictoriaMetrics, Grafana, OpenVPN, WireGuard

Responsibilities

Oversee and optimize global server network, design automation for 99.95%+ uptime, troubleshoot complex network challenges, develop monitoring/alerting systems, engineer solutions for connectivity and resilience

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!