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Lead - Software Engineer (DevEx)

ONLondon, United Kingdom
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We are looking for a Senior or Lead Software Engineer to join the Developer Experience (DevEx) team. In this hands-on IC role, you will help to build the platform that empowers dozens of technology teams to build, ship, and operate services effortlessly. You will be involved in building and architecting our "Golden Path," ensuring that speed, safety, and reliability are baked into every developer's workflow.


Your Mission

  • Help Engineer the Golden Path: Design and implement highly automated CI/CD pipelines (GitHub Actions) and common templating (Typescript/Node) systems that allow a developer to go from "idea" to "production-ready service" in minutes.
  • GraphQL Infrastructure: Act as a contributor to our central Apollo GraphQL API Gateway. You will manage the supergraph composition, runtime stability, and schema governance standards to ensure a consistent contract for all consumers.
  • Help Build the Internal Developer Platform (IDP):Help to Develop our Cloud Abstraction Layer and Developer Portal. This includes building self-service tools, CLIs, and service catalogs that reduce cognitive load for engineers.
  • SRE & Observability: Integrate "secure-by-default" practices and robust observability into the platform. You’ll build dashboards (NewRelic) and monitoring patterns that provide teams with deep insights into their service health.
  • Technical Excellence & Advocacy: Write high-quality documentation, and advocate for DevEx best practices across the organization.
  • Friction Reduction: Actively hunt for bottlenecks in the software development lifecycle. Whether it's a slow build or a complex deployment process, you will be involved in fixing it.

Your story

  • Product Thinking: You treat internal developers as your customers. You listen to their pain points and iterate on the platform based on real-world feedback.
  • Infrastructure as Code: You are comfortable with Terraform and Kubernetes (GCP experience is a plus), treating infrastructure with the same rigor as application code.
  • Automation Mindset: You are passionate about CI/CD (GitHub Actions) and building developer tooling (CLIs, SDKs, or Portals).
  • AI-Augmented Engineering Workflows: You leverage (or have an active interest in) the latest agentic coding tools to 10x your productivity, blending deep technical principles with AI-assisted workflows. As a power user of AI, you orchestrate complex builds and bypass boilerplate to deliver robust, scalable code at pace, ensuring our TypeScript/Node.js environment remains lean and efficient (other tech-stacks are acceptable).
  • Architectural API Design: Tangible experience in crafting robust API contracts with a focus on GraphQL Federation; familiarity with the Apollo tech stack is highly regarded.
  • Data-Driven: You understand DORA metrics and DevEx signals, using them to measure the success of the tools you build.

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FAQ

Is the Lead - Software Engineer (DevEx) position at ON remote?
Yes. This role was posted on Remote Frontend Jobs, a job board that lists exclusively fully remote positions.
When was this Lead - Software Engineer (DevEx) job posted?
This listing was posted on May 19, 2026 and is still open for applications.
How do I apply for the Lead - Software Engineer (DevEx) position at ON?
Use the apply button on this page — it takes you directly to the employer’s application page.

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