[Hiring] Senior DevEx Engineer - Infrastructure @Primer.io

Role Description

You'll join Infrastructure, the team that owns the platform every other Primer engineer builds and ships on. CI/CD, deployment, internal tooling, ephemeral environments: if it's how code gets from a laptop to production safely, it's ours.

What will you be doing?

• Own Primer's internal developer platform end to end: the CI/CD pipelines, deployment workflows (canary, blue/green), self-service tooling and ephemeral environments that every engineer here depends on to ship.
• Build the human-AI development loop. This is the most open part of the role: the tooling and automation that let engineers work effectively alongside coding agents, and the patterns that make agent-driven workflows fast and safe at Primer.
• Treat developer productivity as a measurable system. Instrument it, find where delivery actually slows down, and ship the changes that fix it instead of guessing.
• Take real operational ownership. You'll join the Core Infrastructure on-call rotation and own the reliability of what you build.
• Set the technical direction for how Primer's engineers build and ship, and bring less experienced engineers along with you as you do it.
• Improve how engineers write code, not just how they ship it. Partner with product teams to make the tools, frameworks and internal APIs they use every day more ergonomic, and help reduce the friction of building features at Primer.
• Build Primer's paved roads. Reduce the application boilerplate engineers write, shape standards around how services are built and configured, and own the golden-path tooling that lifts efficiency across every team.
• Work in the open across a fully distributed team, making your decisions and trade-offs visible rather than holding them in your head.

Qualifications

• Strong cloud infrastructure experience. AWS is preferred; we'll also consider strong GCP backgrounds.
• Hands-on Kubernetes experience.
• Infrastructure-as-code as a working tool, not a buzzword. Terraform is preferred, but Pulumi, CloudFormation, Ansible or similar are fine. Not having Terraform specifically is not a blocker.
• CI/CD as a core competency. You've owned the build, test and deploy workflow and preview environments, not just used them.
• A history of measuring and improving delivery, using DORA, SPACE or a similar framework to back the work up.
• Comfortable owning production systems and being part of an on-call rotation.
• A genuine software engineering background. You've built and maintained applications or products, not just infrastructure tooling.
• You can reason about what makes code pleasant to work with. This is what lets you build AI and developer tooling that engineers actually want to use.
• An async-first communicator who works well in a remote, distributed team.

Requirements

• Hands-on experience building with AI or agent tooling, or working directly with LLM-based development workflows. This field is new, so real curiosity counts alongside real experience.
• Familiarity with MCP servers and agent integration patterns.
• Payments, fintech or other regulated-industry experience.

Benefits

• We are fully remote and globally distributed; and have been since day one.
• Competitive share options.
• Uncapped holiday, with 25 days minimum to be taken.
• Co-working space access across major cities.
• Workations & Company Retreat.
• The best equipment for your role.
• £500 towards your home office setup.
• Generous learning budget.
• Private Medical Insurance.
• A broad set of additional perks and benefits (depending on location).