Senior Site Reliability Engineer, Node Platform

As adoption of the Chainlink Runtime Environment (CRE) accelerates, you will be a part of that growth to ensure reliability and security remain at the forefront of development. This role assists in building the Kubernetes-based infrastructure primitives and application control-plane components that CRE runs on, enabling deterministic horizontally scalable deployments with decentralized consensus built in. By codifying scaling logic into reusable operators and automation, you will ensure CRE continues to scale safely, predictably, and efficiently as demand grows. The impact is foundational; the infrastructure you will help build is not constrained by product expansion, operational risk is reduced at scale, and it will help Chainlink strengthen its ability to grow its decentralized network without sacrificing reliability or security.

You will design and build the infrastructure primitives that define how Chainlink Decentralized Oracle Networks (DONs) scale across internal systems and the decentralized ecosystem.

You will help create the CRE (Kubernetes-based) control plane that enables:

• Deterministic horizontal scaling of DONs

• Safe and repeatable infrastructure expansion

• Improved operational efficiency and scalability

You will develop the core infrastructure components, including Kubernetes Operators and scaling automation, that Product teams will adopt and then might later be distributed to external node operators to improve decentralized scaling.

This is not an operational support role. You will be building the systems that define how Chainlink scales while shaping the reliability, scalability, and decentralization of protocol-level services.

• 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

• CI/CD reliability experience

• Automation-first mindset

• AWS production experience

• Proficiency in Go (strongly preferred) or equivalent systems language

• 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 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

All roles with Chainlink Labs are global and remote-based. Unless otherwise stated, we ask that you try to overlap some working hours with Eastern Standard Time (EST).

We carefully review all applications and aim to provide a response to every candidate within two weeks after the job posting closes. The closing date is listed on the job advert, so we encourage you to take the time to thoughtfully prepare your application. We want to fully consider your experience and skills, and you will hear from us regarding the status of your application shortly after the closing date.

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