ASOS

Senior Software Engineer

ASOS
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1 day ago
London, United KingdomSenior

Responsibilities

  • Lead the design and delivery of complex Developer Experience platform features across Backstage, golden path templates, engineering metrics, DORA instrumentation, and AI-assisted tooling.
  • Own the architecture and technical direction of key platform components and establish engineering standards for scalability, quality, security, observability, and delivery automation.
  • Design and evolve Backstage plugins, scaffolder templates, catalogue integrations, and TechDocs to improve developer onboarding and service ownership.
  • Develop AI agent platform integrations and workflows using GitHub Copilot, MCP servers, Claude workflows, and related tooling.
  • Define evaluation frameworks, guardrails, and adoption patterns for AI-assisted engineering at scale.
  • Mentor junior and mid-level engineers through code reviews, pairing, design discussions, and direct feedback.
  • Collaborate with Engineering Leadership, OCTO, Release Engineering, Developer Infrastructure, Cyber Security, and product engineering teams.

Requirements

  • Proven experience delivering production-grade software in a platform, developer experience, or internal developer platform team.
  • Deep proficiency in TypeScript/JavaScript and/or C#/.NET, Node.js, or Go.
  • Proven Git experience, including branching strategies, pull requests, code reviews, and maintaining high engineering quality.
  • Experience with Backstage or a comparable internal developer portal; experience with catalogue modelling, plugin development, scaffolder templates, or TechDocs is advantageous.
  • Strong understanding of CI/CD, modern software delivery practices, golden paths, and developer onboarding.
  • Experience with Docker, GitHub Actions or Azure Pipelines, and Azure platform fundamentals.
  • Experience building and maintaining React-based developer portal interfaces.
  • Hands-on experience using agentic AI tools such as GitHub Copilot, Claude Code, or equivalent, with the ability to evaluate and scale reliable agent workflows.
  • Track record of setting technical direction, making architecture decisions, and delivering shared platforms used by multiple product teams.
  • Experience mentoring engineers, conducting effective code reviews, and collaborating across platform engineering, application engineering, security, and product teams.
  • Preferred experience includes MCP server integration, LLM tool-use patterns, DORA metrics, developer productivity instrumentation, DevEx research, CLI tooling, documentation pipelines, service catalogue governance, and AI evaluation or guardrail design.

Benefits

  • At least two days per week in the London office.
  • Employee discount and access to employee sample sales.
  • 25 days of paid annual leave plus an additional celebration day.
  • Private medical care scheme.
  • Flexible benefits allowance that can be taken as cash or used for other benefits.
  • Opportunity to represent ASOS at industry-leading events.
ASOS

About ASOS

1,001-5,000 employees

ASOS is a global online fashion and beauty retailer for 20‑somethings, selling own‑brand and third‑party labels via its website and mobile apps. The company earns revenue from direct‑to‑consumer e‑commerce, shipping to customers worldwide and offering marketplace services for brands. Founded in 2000 and headquartered in London, ASOS is a public company listed on the London Stock Exchange and runs in‑house content and fulfillment operations at scale.

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