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Senior Systems & Reliability Engineer (VPN)

Proton· CC - Engineering - VPN
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Hybrid (Barcelona & Geneva)€61k - €116kfull-timePosted 6mo ago

About the role

Senior Systems & Reliability Engineer on the VPN Infrastructure team at ProtonVPN. Responsible for designing, implementing, and maintaining robust systems to ensure high uptime, reliability, and resilience across a globally distributed server network in adversarial environments.

Responsibilities

  • Infrastructure Management: Oversee and optimize our rapidly expanding global network of thousands of servers
  • Automation & Reliability: Design and implement automation systems that ensure 99.95%+ uptime across our infrastructure
  • Problem Solving: Serve as an active member of the on-call rotation, troubleshooting complex technical challenges across different network environments and censorship scenarios
  • Monitoring Excellence: Develop and enhance sophisticated monitoring and alerting systems that provide real-time visibility into our global infrastructure
  • Technical Implementation: Engineer solutions to improve connectivity, stability, performance, scalability, security, and resilience—particularly in adversarial network environments

Qualifications

  • Linux Expertise: Knowledge of Debian/Linux operating system internals, including NFtables, networking stack, and kernel tuning
  • Infrastructure as Code: Experience with orchestration and automation using Ansible or similar tools
  • Programming Skills: Python proficiency for developing automation tools and operational scripts
  • Observability Tools: Hands-on experience with monitoring solutions like VictoriaMetrics and Grafana dashboards
  • Security Knowledge: Understanding of security principles and best practices for infrastructure

Skills

Required:LinuxInfrastructure as CodePythonObservability ToolsSecurity

Benefits

  • Work that Matters: impact aligned with user privacy
  • Stock Options
  • Technology: appropriate hardware and software
  • Learning & Development
  • Employee Benefits: health coverage, retirement options, leave, wellness support
  • In-Person Collaboration: offices in Geneva, Zürich, Barcelona, London and more
  • Food: lunch and snacks provided
  • Transport: coverage for public transport, bike allowances, or parking
  • Flexible Working: set hours and outcome-focused culture
Last updated Jul 30, 2026. Interested? Apply on the company site.

About Proton

Privacy by default

Proton was started in 2014 by scientists who met at CERN and shared a vision of an internet that defends freedom and puts people first.

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