Senior DevOps Engineer - Linea

Consensys is the leading blockchain and web3 software company founded by Joe Lubin, CEO of Consensys and Co-Founder of Ethereum. Since 2014, Consensys has been at the forefront of innovation, pioneering technological developments within the web3 ecosystem.

Through our product suite, including the MetaMask platform, Infura, Linea, Diligence, and our NFT toolkit Phosphor, we have become the trusted collaborator for users, creators, and developers on their path to build and belong in the world they want to see.

Whether building a dapp, an NFT collection, a portfolio, or a better future, the instinct to build is universal. Consensys inspires and champions the builder instinct in everyone by making web3 universally easy to use and develop on.

Our mission is to unlock the collaborative power of communities by making the decentralized web universally easy to access, use, and build on. 

You’ll get to work on the tools, infrastructure, and apps that scale these platforms to onboard one billion participants and 5 million developers. You’ll be constantly exposed to new concepts, ideas, and frameworks from your peers, and as you work on different projects — challenging you to stay at the top of your game. You’ll join a network of builders that reaches the edge of our ecosystem. Consensys alumni have moved on to become tech entrepreneurs, CEOs, and team leads at tech companies. 

About Linea

Linea is the home network for the world. One where users are in control, empowered to set the terms for their digital and financial lives. Our leading ZK technology makes Ethereum effortless, unlocking web2-like speed, cost, and scale. We offer rich builder support, including Metamask Developer integrations, to help builders create more powerful, stickier dapps. Spearheaded by Ethereum ecosystem leaders, and together with the Linea community—we drive significant advancements across onchain experience for everyone.

We are the zkEVM Layer-2 blockchain powered by Consensys, built to scale Ethereum while preserving its security and decentralization. Launched in July 2023, Linea rapidly established itself with over $370M in Total Value Locked (TVL) across 400+ apps and 250M transactions processed, making it the largest zkEVM blockchain by total value secured (excluding associated tokens). Our mission is to empower everyone to live onchain.

The role

This role is deeply hands-on and strategic. As Senior DevOps Engineer, you’ll own the design, automation, and reliability of Linea’s infrastructure. You will work directly with AWS, Kubernetes, Karpenter, Terraform, and Grafana, driving operational excellence, security, and rapid iteration in a cloud-native environment. You’ll partner with engineers, product, and SREs to deliver reliable and cost-efficient mainnet services for a fast-moving blockchain business.

You’ll work with top engineers building critical infrastructure for the future of finance and Web3, in a collaborative, fast-paced, and remote-first setting. The scope spans security, cost management, operational excellence, and rapid iteration at scale.

Key Responsibilities

• Architect, build, and maintain AWS cloud infrastructure supporting Linea Mainnet/L2 nodes and supporting services.
• Design and optimize Kubernetes clusters for scaling, resiliency, and healthy node operations, leveraging Karpenter autoscaling and spot instance capabilities.
• Implement infrastructure-as-code using Terraform for reproducible, secure, and audit-ready deployments.
• Own monitoring, alerting, and observability pipelines (Grafana, Prometheus, Loki) for end-to-end production health and actionable insights.
• Drive automation of deployment and operational workflows, enabling zero-downtime upgrades and rapid rollbacks.
• Participate in incident response, root cause analysis, and postmortem reporting for production blockchain services.
• Collaborate closely with engineering teams to identify opportunities for reliability and performance improvements.
• Document infrastructure, operational protocols, and DevOps best practices, ensuring knowledge sharing and team alignment.
• Stay current with new tools and cloud advancements relevant to blockchain, DevOps, and Kubernetes ecosystems.

Qualifications

• Senior/Staff experience with AWS cloud services and advanced Kubernetes ops, in production-grade environments.
• Proven experience in infrastructure-as-code, particularly Terraform, and delivering best practices for security and scalability.
• Proficiency in monitoring/observability tools: Grafana, Prometheus, Loki.
• Hands-on with Kubernetes autoscaling (Karpenter or Cluster Autoscaler) and EC2 spot instance cost optimization.
• Strong scripting/programming skills (Bash, Python, Go, or similar).
• Strong troubleshooting, communication, and documentation abilities.
• Blockchain/Layer 2 protocol, cryptography, and Web3 infrastructure experience preferred but not required.
• Experience working in agile, high-performance teams within top technology environments.

Don't meet all the requirements? Don't sweat it. We’re passionate about building a diverse team of humans and as such, if you think you've got what it takes for our chaotic-but-fun, fully-remote, start-up environment, apply anyway, detailing your relevant transferable skills in your cover letter. While we have a pretty good idea of what we need, we're ready for you to challenge our thinking on who needs to be in this role.

It is a requirement of employment in this position that applicants will be required to submit to background checks including but not limited to employment, education and criminal record checks. Further details will be provided to applicants that successfully meet the criteria for the position as determined by the company in its sole discretion. By submitting an application for employment, you are acknowledging and consenting to this requirement.