Software Engineer; Developer

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.

Were looking for a Software Engineer to join our Developer Experience team in London. This is platform engineering at a scale that matters: the tools portal and golden path templates you build are what hundreds of ASOS engineers rely on to discover services start new work and get into production. Developer Experience owns Backstage our developer portal golden path templates engineering metrics and the AI tooling that is changing how engineers work every day.

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 this level your ownership sits at the feature and component level. You will take well-defined problems make the technical decisions within them and deliver to production with confidence. You will also have a real voice in shaping architectural and cross-team decisions working closely with Senior Engineers and the Engineering Lead to influence the direction of the platform.

In this role you will own meaningful pieces of work across the Developer Experience platform. Youll build and improve features in Backstage contribute to the golden path templates that hundreds of engineers depend on and play an active part in embedding AI-assisted workflows into the developer toolchain. Youll work independently within established patterns bring your own judgement to technical decisions and grow your depth in platform engineering.

Every improvement you ship is multiplied across every team at ASOS returning time to engineers that would otherwise be lost to toil setup or unnecessary complexity.

This is a role for an engineer who takes pride in the craft of building internal products and understands what makes it different from external-facing engineering: the people you are building for are your colleagues and when you make their working lives easier better or faster you feel it immediately. If you get satisfaction from that kind of direct human impact this is the right role.

The primary customers of this team are the Product Delivery Teams across ASOS and the measure of success is not just whether we shipped something - it is whether those teams adopted it use it every day and are delivering faster and getting more value into production because of it.

Our north star is simple: a new engineer should be able to onboard into their team and get their first service into production without needing to ask anyone for help. That is what we are building.

Within six months a strong mid-level engineer in this team will have taken full ownership of at least one Developer Experience service or capability shipped measurable improvements to portal adoption or template coverage and built productive working relationships with product engineering teams across ASOS.

Responsibilities

• Design and deliver features across Developer Experience services primarily Backstage golden path templates engineering metrics and developer productivity tooling.
• Build and maintain Backstage plugins catalogue integrations and scaffolder templates that make it faster and easier for engineers to start new services and discover what they need.
• Contribute to golden path service templates ensuring they cover the most common ASOS service archetypes support canonical languages and frameworks and have security observability and CI/CD built in by default.
• Work on DORA and engineering productivity instrumentation helping the team collect and surface meaningful signals including deployment frequency lead time collaboration score and developer satisfaction so engineering managers have the data they need to identify where friction is slowing their teams down.
• Help shape how Developer Experience thinks about agentic workflows - not just adopting tools but rethinking how golden paths system templates and onboarding work when agents are part of the equation. Youll experiment with both Git Hub Copilot and Claude workflows document what you learn and influence the teams direction on which approaches work best for which problems.
• Contribute to the teams work on AI-assisted engineering adoption working alongside OCTO (Office of the CTO) to help integrate Git Hub Copilot and agentic AI capabilities into developer workflows and making sure the tooling lands where it will have the…