Senior DevOps Engineer

Requirements

• Strong Kubernetes experience, including tuning and troubleshooting on-prem Linux systems under real load
• Hands-on CI/CD background — GitLab CI specifically is a plus
• GitOps in practice, ideally with ArgoCD
• Software development skills in Python, Golang or Rust — enough to build and maintain the tooling around your infrastructure, not just configure it
• Configuration management experience with Ansible and/or Terraform
• A security mindset grounded in DevSecOps practices — supply chain security experience is a genuine advantage here
• The communication skills to work effectively across teams and document your work clearly

What You'll Be Doing

• Own and scale CI/CD infrastructure handling tens of thousands of jobs daily and growing — that means capacity planning, runner architecture, and making the platform reliable as load patterns shift in ways that don't follow simple rules
• Deepen our GitOps workflows built on ArgoCD, from day-to-day operational improvements to more structural work on how we manage cluster state across environments
• Advance our supply chain security posture — we've made deliberate investments in SAST and artifact attestation, and there's meaningful work ahead to see them through
• Troubleshoot hard infrastructure problems across network, application, and system layers — the kind where the answer isn't obvious and requires pulling on multiple threads at once

Nice to Haves

• Beyond the technical side, we care about how you work with people. The team is small, distributed, and collaborative by habit — we're looking for someone who shares knowledge freely, lifts those around them, and doesn't treat collaboration as an afterthought.

Perks and Benefits

• Work that Matters: millions of people trust Proton with their privacy. The impact of your work is real and measurable.
• Stock Options: have a real stake in what Proton is building.
• Technology: get the right hardware and software for your work.
• Learning & Development: Proton invests in your growth with real challenges and ownership from day one.
• Employee Benefits: strong health coverage, retirement options, generous leave, and wellness support.
• In-Person Collaboration: collaborate face-to-face with passionate and purposeful people across different offices.
• Food: lunch and snacks are provided daily in offices.
• Transport: public transport, bike allowances, or parking covered.
• Flexible Working: set hours that work for you and your team.