61K–116K EUR / year
Senior Systems & Reliability Engineer (VPN)
DevOpsOn-site — Barcelona, Geneva
Published on 2026-08-17
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About this role
Help operate and improve Proton VPN’s global infrastructure, which spans thousands of servers. Build reliable, secure systems that maintain connectivity and resilience, including in censorship-heavy and adversarial network environments.
About the company
Proton builds end-to-end encrypted email, VPN, storage, password, and related privacy tools for individuals and businesses.
The team
VPN Infrastructure team
Stack
Debian LinuxNftablesAnsiblePythonVictoriaMetricsGrafanaOpenVPNWireGuard
What you'll do
- Manage and optimize a global network of thousands of servers
- Automate infrastructure operations and support 99.95%+ uptime
- Participate in the on-call rotation and troubleshoot complex issues
- Develop monitoring and alerting for global infrastructure
- Improve connectivity, stability, performance, scalability, security, and resilience
What we're looking for
- Knowledge of Debian/Linux internals, networking, nftables, and kernel tuning
- Experience with Ansible or similar infrastructure automation tools
- Python proficiency for automation and operational scripts
- Hands-on experience with monitoring tools such as VictoriaMetrics and Grafana
- Understanding of infrastructure security principles
Nice to have
- TCP/IP and UDP troubleshooting or optimization experience
- Experience with OpenVPN or WireGuard
- Knowledge of cryptography, TLS certificates, or PKI
- Experience designing high-availability systems
- Experience with network censorship or restricted internet environments
Benefits
- Stock options from day one
- Health coverage and retirement options
- Generous leave and wellness support
- Office lunch and snacks
- Public transport, bike, or parking allowance
- Flexible working hours