# Senior Software Engineer at ASOS

ASOS is hiring a Senior Software Engineer in London, United Kingdom. Level rates it Works on AI ●●●○; you can [apply on ASOS](https://jobsbylevel.com/go/d59decc5-09a2-48cc-9500-ce3c5d1f5ad1?utm_medium=ai-agent).

AI Level 3, AI centrality 72 out of 100. London, England, United Kingdom.

## Details

- Company: [ASOS](https://jobsbylevel.com/companies/asos)
- AI level: AI Level 3 (score 72 out of 100)
- Location: London, England, United Kingdom
- Posted: November 5, 2026
- Apply: https://jobsbylevel.com/go/d59decc5-09a2-48cc-9500-ce3c5d1f5ad1?utm_medium=ai-agent
- Free CV review for this job: https://jobsbylevel.com/cv-review?job=senior-software-engineer-at-asos-000191

## Prepare for this job

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## Description

We're ASOS, the online retailer for fashion lovers all around the world. We exist to give our customers the confidence to be whoever they want to be, and that goes for our people too. At ASOS, you're free to be your true self without judgement, and channel your creativity into a platform used by millions. We're proud members of Inclusive Companies; are Disability Confident Committed and have signed the Business in the Community Race at Work Charter. Everyone needs some help showing up as their best self, so let our Talent team know if you need any adjustments throughout the process in whatever way works best for you. We believe being together in person helps us move faster, align more effectively, and build stronger teams. Our approach includes spending at least two days a week in the office to support collaboration, decision-making, and shared ownership. We’re looking for a Senior Software Engineer to join our Developer Experience team in London. Developer Experience is the team responsible for the internal developer platform at ASOS: Backstage, our developer portal, golden path templates, engineering metrics, and the agentic AI capabilities that are fundamentally changing how engineers work. The goal is always the same: reduce the cognitive load on engineers so they can focus on building things that matter for the business. At senior level your ownership sits at the system and architectural level. As an individual contributor you will be the person others look to for technical decisions, design direction, and engineering quality on the platform. You are not just delivering features; you are shaping how the platform is built and setting the standards the whole team works to. In this role, you will take technical ownership of significant parts of the Developer Experience platform. You’ll lead the design and delivery of complex features, set engineering standards within the team, mentor more junior engineers, and play a direct role in shaping how the platform evolves. The end-user of everything you build is a fellow engineer at ASOS, and every improvement you make is multiplied across hundreds of people, returning time that would otherwise be lost to toil, setup, or unnecessary complexity. The measure of a great developer platform is whether a new engineer can onboard into their team and get their first service into production without needing to ask anyone for help. That is what we are building. This is a role for a senior engineer who combines deep technical capability with genuine product thinking, who operates comfortably across the full breadth of a platform stack, and who is energised by solving hard problems that make other engineers more productive. We want someone who ships, learns, and iterates, not someone who plans endlessly. Platform Ownership & Delivery Lead the design and delivery of complex features across Developer Experience services, covering Backstage, golden path templates, engineering metrics, DORA instrumentation, and AI-assisted developer tooling. Take architectural ownership of key Developer Experience components, making clear, well-reasoned technical decisions and ensuring they scale across a diverse engineering organisation. Design and evolve Backstage plugins, scaffolder templates, and catalogue integrations that make the developer portal the single trusted starting point for engineers at ASOS. Own the engineering quality of golden path templates, ensuring they reflect current best practices, cover the right service archetypes, support ASOS canonical languages and frameworks, and include security, observability, and CI/CD by default. Drive the team’s work on DORA and developer productivity instrumentation, designing measurement approaches that give real visibility into deployment frequency, lead time, collaboration score, and developer satisfaction, surfacing these signals to engineering management so they can identify and remove friction across their teams. Agentic AI & Developer Tooling Play a

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