Network Reliability Engineer

TL;DR

Network Reliability Engineer (Networking/Automation): Own the reliability and performance of Proton’s network infrastructure, with an accent on protocol-level optimization, security controls, and automation tooling. Focus on building and operating telemetry-driven, Kubernetes-controller-based networking with minimal-disruption upgrades and incident response.

Location: Geneva; Paris

Salary: €50,000–€77,000 (Paris)

Company

Proton builds privacy-first communication and security products, including Proton Mail and Proton VPN.

What you will do

• Monitor, troubleshoot, and optimize network protocols to maximize uptime across the global fleet
• Deploy and maintain network security controls (firewalls, IDS/IPS, ACLs) aligned with Proton privacy and security standards
• Build automation tooling in Python, Go, or Rust to reduce manual operations and expose network capabilities as self-service APIs
• Lead or contribute to network upgrades and migrations (including DC fabric changes) with strict protocol best practices
• Operate and extend telemetry pipelines and Kubernetes-based network controllers; contribute upstream when beneficial
• Participate in on-call rotation, respond to high-severity incidents, and drive post-mortems to corrective action

Requirements

• 5+ years of hands-on experience implementing and operating enterprise-scale networks in production
• Deep practical knowledge of BGP, OSPF, IS-IS, EVPN VXLAN, and TCP/IP with protocol-first reasoning
• Experience configuring network security controls (firewalls, IDS/IPS, ACLs) without relying on proprietary features
• Ability to script confidently in Python, Go, Rust, or equivalent for monitoring and configuration automation
• Solid Linux and DevOps fundamentals (CLI comfort, Terraform, and Git-based workflows)
• Hardware-agnostic mindset across multiple vendors

Nice to have

• Experience building network telemetry pipelines using gNMIc, sFlow, BMP (or similar) integrated with Prometheus and Grafana
• Kubernetes experience, especially leveraging or adapting controllers
• Contributions to open-source networking tools or internal automation frameworks
• Involvement in NOG communities or conference speaking

Culture & Benefits

• Strong health coverage, retirement options, generous leave, and wellness support
• Stock options with an ownership mindset
• Learning and development with real ownership from day one
• In-person collaboration in offices across Geneva and other locations; most time collaborating face-to-face
• Lunch and snacks provided in offices
• Transport support (public transport, bike allowances, or parking) and flexible working hours

Hiring process

• Interview process to discuss final compensation based on qualifications and experience
• On-site collaboration expectations aligned with Geneva/Paris office locations