Senior Site Reliability Engineer, DevEx

Chainlink Labs

9d•$90,000 - $125,000•Remote

About The Position

The Engineering Team As Chainlink Labs’ engineering org scales, the DevEx team owns the infrastructure primitives that every product team builds, tests, and ships on top of. This role builds the Kubernetes-based control-plane components and automation that power our CI/CD platform, developer environments, and build systems — not the manual operation of them. By codifying platform logic into reusable Kubernetes Operators, GitOps workflows, and automation, you will ensure engineering velocity scales safely, predictably, and efficiently as the org grows. The impact is foundational: the infrastructure you build is not constrained by any single product’s roadmap, operational toil is reduced org-wide, and it directly determines how fast every other engineering team at Chainlink Labs can ship. Your Impact You will design and build the infrastructure primitives that define how our CI/CD platform, build systems, and developer environments scale across the entire engineering org. You will help build and operate the Kubernetes-based control plane behind our CI/CD platform, including: GitHub Actions self-hosted runner infrastructure (autoscaling, isolation, cost/perf tuning) GitHub Apps and GitHub-as-code (permissions, webhooks, org-wide automation) Secure network access for CI/CD and remote dev environments (Tailscale) GitOps-driven deployment of platform services (Flux) Ephemeral/on-demand developer environments and build systems You will develop the core infrastructure components — including Kubernetes Operators and scaling automation — that product teams adopt directly, reducing bespoke per-team CI/CD and environment tooling. This is not an operational support role. You will be building the systems that define how engineering teams build, test, and deploy, shaping the reliability and scalability of the developer experience org-wide.

Requirements

6–9+ years in SRE / Platform / Infrastructure Engineering
Proven experience scaling Kubernetes in high-throughput production environments
Deep Kubernetes expertise beyond operating clusters — internals, scheduler behavior, custom resources, and cluster-scale failure diagnosis
Experience building platform infrastructure, control planes, or Kubernetes Operators (not just consuming them)
Strong distributed systems and production reliability experience
Terraform/GitOps ownership — designing and owning automation, not just running playbooks
GitOps workflows (Flux / ArgoCD) experience
Hands-on experience with CI/CD platforms at scale: GitHub Actions (self-hosted runners, workflows-as-code), GitHub Apps, and build systems
AWS/cloud infrastructure production experience
Proficiency in Go (strongly preferred) or another systems language
Track record of building infrastructure primitives rather than primarily performing support/operations — automation-first mindset

Nice To Haves

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 contributing to Kubernetes ecosystem projects
Experience working in high-ambiguity environments
Experience with web3 concepts is a plus but not required for this role

Responsibilities

Design and build the infrastructure primitives that define how our CI/CD platform, build systems, and developer environments scale across the entire engineering org.
Help build and operate the Kubernetes-based control plane behind our CI/CD platform, including GitHub Actions self-hosted runner infrastructure (autoscaling, isolation, cost/perf tuning), GitHub Apps and GitHub-as-code (permissions, webhooks, org-wide automation), secure network access for CI/CD and remote dev environments (Tailscale), GitOps-driven deployment of platform services (Flux), and ephemeral/on-demand developer environments and build systems.
Develop the core infrastructure components — including Kubernetes Operators and scaling automation — that product teams adopt directly, reducing bespoke per-team CI/CD and environment tooling.