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Site Reliability Engineer - Infrastructure Systems

Proton· CC - Infrastructure - Service
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Hybrid (Geneva; Paris)€50k - €77kfull-timePosted 5mo ago

About the role

Role within Proton’s Infrastructure Systems team responsible for base platforms (Kubernetes, VM orchestration, Bare metal provisioning) and critical services (DNS, DHCP, SoT, Monitoring) to ensure high availability and performance across a global server network.

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 Linux operating system internals, networking stack, and kernel tuning
  • Infrastructure as Code: Strong Experience with Kubernetes orchestration and automation using Terraform, Ansible, Puppet or similar tools
  • Programming Skills: Python proficiency for developing automation tools and operational scripts
  • Architecture: Ability to design Highly Available and complex distributed scalable systems architecture
  • Observability Tools: Hands-on experience with monitoring solutions like Prometheus and Grafana dashboards
  • Security Knowledge: Understanding of security principles and best practices for infrastructure

Skills

Required:LinuxKubernetesTerraformAnsiblePythonObservabilitySecurity

Benefits

  • Work that Matters: millions of people trust Proton with their privacy.
  • Salary Range : Paris - Base Annual Gross - 50,000€ to 77,000€ - Final compensation will be determined based on the candidate's qualifications, skills, and previous experience.
  • Stock Options: at Proton, we all have the opportunity to be owners of the company.
  • Technology: right hardware and software to do your best work.
  • Learning & Development: Proton invests in growth and offers real challenges with ownership from day one.
  • Employee Benefits: strong health coverage, retirement options, generous leave, wellness support
  • Office First: office-centric with some flexibility for remote work
  • Food: Lunch and snacks provided in offices
  • Transport: coverage for public transport, bike allowances, or parking
  • Flexible Working: set hours that work for you and your team
Last updated Oct 15, 2026. Interested? Apply on the company site.

About Proton

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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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