Senior DevOps Engineer

Proton; Paris; Sur place; EUR 50 000 - 70 000; Plein temps

Résumé du poste

Deepstreamtech is seeking a skilled DevOps Engineer to help build and maintain a developer tooling platform for hundreds of engineers. This role involves strong expertise in Kubernetes, CI/CD infrastructure, and a solid security mindset.

Applicants should be proficient in GitOps workflows and willing to tackle challenging infrastructure issues across various environments. If you're passionate about DevSecOps and continuous improvement, we want to hear from you!

Qualifications

• Strong Kubernetes experience, including tuning and troubleshooting on-prem Linux systems.
• Hands-on CI/CD background, preferably with GitLab CI.
• Practical experience in GitOps, ideally using ArgoCD.

Responsabilités

• Build and maintain the developer tooling platform and infrastructure.
• Scale CI/CD infrastructure, ensuring reliability under load.
• Advance GitOps workflows and improve cluster state management.

Connaissances

Kubernetes experience

CI/CD background

GitOps experience

Software development skills (Python, Golang, Rust)

Configuration management with Ansible/Terraform

Security mindset/DevSecOps

Communication skills

Description du poste

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 the job involves

• The DevOps team builds, maintains and scales the developer tooling platform and infrastructure that hundreds of engineers at Proton rely on daily, across both on-premises and cloud environments. Security isn't an afterthought — it's a core constraint we design around
• 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