Senior Site Reliability Engineer (DevEx)

Join Chainlink Labs as a Senior Site Reliability Engineer (DevEx) and play a crucial role in scaling our engineering organization. You will build the infrastructure primitives that define our CI/CD platform, build systems, and developer environments. This is not an operational support role; you will be shaping the reliability and scalability of the developer experience across the entire organization.

• Concevoir et construire les primitives d'infrastructure qui définissent la manière dont notre plateforme CI/CD, nos systèmes de construction et nos environnements de développement évoluent à l'échelle de l'ensemble de l'organisation d'ingénierie.
• Développer les composants d'infrastructure de base, y compris les opérateurs Kubernetes et l'automatisation de mise à l'échelle, que les équipes produit adoptent directement, réduisant ainsi les outils CI/CD et d'environnement sur mesure par équipe.
• Construire l'infrastructure basée sur Kubernetes qui alimente notre plateforme CI/CD, y compris l'infrastructure des runners auto-hébergés GitHub Actions, les applications GitHub et GitHub-as-code.
• AWS/cloud infrastructure production experience
• Hands-on experience with CI/CD platforms at scale: GitHub Actions (self-hosted runners, workflows-as-code), GitHub Apps, and build systems
• Track record of building infrastructure primitives rather than primarily performing support/operations — automation-first mindset
• Proficiency in Go (strongly preferred) or another systems language
• Terraform/GitOps ownership — designing and owning automation, not just running playbooks
• Strong distributed systems and production reliability experience
• 6–9+ years in SRE / Platform / Infrastructure Engineering
• Proven experience scaling Kubernetes in high-throughput production environments
• GitOps workflows (Flux / ArgoCD) experience
• Experience building platform infrastructure, control planes, or Kubernetes Operators (not just consuming them)
• Deep Kubernetes expertise beyond operating clusters — internals, scheduler behavior, custom resources, and cluster-scale failure diagnosis
• Experience with Tailscale or similar zero-trust/overlay networking for CI/CD or remote dev environments
• Experience designing SLO strategies and error-budget usage
• Experience improving diagnosability and observability frameworks (OpenTelemetry or similar)
• Experience building internal developer platforms (IDP) or ephemeral/on-demand dev environments
• Experience building multi-tenant platform infrastructure
• Experience working in high-ambiguity environments
• Experience contributing to Kubernetes ecosystem projects
• Experience with web3 concepts is a plus but not required for this role