Senior Site Reliability Engineer, Node Platform

About the role

The Engineering Team at Chainlink is growing rapidly to support the increasing adoption of the Chainlink Runtime Environment (CRE). This role focuses on building the Kubernetes-based infrastructure primitives and application control-plane components that enable deterministic horizontal scaling of Chainlink Decentralized Oracle Networks (DONs).

Responsibilities

• Design and build the infrastructure primitives that define how Chainlink DONs scale across internal systems and the decentralized ecosystem.
• Create the CRE (Kubernetes-based) control plane that enables:
• Deterministic horizontal scaling of DONs
• Safe and repeatable infrastructure expansion
• Improved operational efficiency and scalability
• Develop the core infrastructure components, including Kubernetes Operators and scaling automation, that Product teams will adopt and potentially distribute to external node operators.

Requirements

• 6–9+ years in SRE / Platform / Infrastructure Engineering
• Proven experience scaling Kubernetes in high-throughput production environments
• Deep knowledge of:
• Scheduler behavior
• StatefulSets & persistent workloads
• Autoscaling strategies (HPA, VPA, KEDA, custom scaling)
• Resource management & performance tuning
• Multi-cluster and multi-region architectures
• Experience in diagnosing production failures at the cluster scale
• Strong Terraform or Crossplane experience
• GitOps workflows (ArgoCD / Flux) experience
• CICD reliability experience
• Automation-first mindset
• AWS production experience
• Proficiency in Go (strongly preferred) or equivalent systems language

Desired Qualifications

• Experience with web3 concepts (e.g. blockchain node lifecycle, forks, reorgs, or RPC issues)
• Experience with oracle systems, token architectures, or decentralized services
• Experience scaling stateful high-availability distributed systems
• Experience building internal platform primitives
• Experience implementing custom autoscaling logic
• Experience designing Service Level Objectives (SLO) strategies and error-budget usage
• Experience improving diagnosability and observability frameworks
• Experience working in high-ambiguity environments
• Experience operating blockchain infrastructure in production
• Certified Kubernetes Administrator (CKA)
• Experience contributing to Kubernetes ecosystem projects
• Experience building multi-tenant platform infrastructure
• Experience working in high-security and/or SOC 2/ISO27001 compliant environments
• Experience with chaos engineering practices or implementation