# Principal Software Engineer at ASOS

ASOS is hiring a Principal Software Engineer in London, United Kingdom. Level rates it Works on AI ●●●○; you can [apply on ASOS](https://jobsbylevel.com/go/794328f0-0315-4c5c-9717-340b25b952a8?utm_medium=ai-agent).

AI Level 3, AI centrality 66 out of 100. London, England, United Kingdom.

## Details

- Company: [ASOS](https://jobsbylevel.com/companies/asos)
- AI level: AI Level 3 (score 66 out of 100)
- Location: London, England, United Kingdom
- Posted: November 11, 2026
- Apply: https://jobsbylevel.com/go/794328f0-0315-4c5c-9717-340b25b952a8?utm_medium=ai-agent
- Free CV review for this job: https://jobsbylevel.com/cv-review?job=principal-software-engineer-at-asos-5919fe

## Prepare for this job

The job page lists 4 likely interview questions for this offer, with a CV checklist: https://jobsbylevel.com/jobs/principal-software-engineer-at-asos-5919fe

## Description

We're ASOS. We blend our flair for fashion with our love of cutting- edge technology, but more importantly were interested in how we can bring the best out of you. We exist to give people 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 judgment, and channel your creativity into a platform used by millions. Through our Fashion with Integrity strategy we are driving diversity, equity and inclusion across every aspect of ASOS and ensuring every ASOSer can be their authentic self at work. We want our people to be whoever they want to be, because we believe people who bring their best selves to work, do their best work. As a Principal Software Engineer, your goal is to make engineering, and our engineers, better every day. You are approachable and collaborative, and you actively nurture a diverse and inclusive workplace. You work closely with engineering teams to sharpen their practices, processes and technology, and to explore new ones. You help them clear technical hurdles of any size, and when it helps, you roll up your sleeves and build alongside them. Your work spans the full stack: our customer-facing apps and web, and the .NET microservices, APIs and data behind them. You will help teams build consistent, reliable experiences end to end, and you will keep growing your own range as you go. You will help lead ASOS into the age of agentic commerce. AI agents are changing how people discover, compare and buy fashion, and you will be at the centre of how we respond. You will turn bold ideas into working proofs of concept, work alongside leading names in the industry, and bring the best of it to life in the products millions of customers use every day. Key Responsibilities Accelerating our agentic commerce journey Prove it fast. Lead rapid proofs of concept that test how AI agents can discover, recommend and buy fashion through ASOS. Go from idea to working prototype in weeks, learn from real results and move on quickly from what does not work. Work with the best. Build relationships with industry leaders, including technology partners, AI platform providers and industry groups. Bring their thinking into ASOS and make sure ASOS has a voice in how agentic commerce develops. Build the foundations. Shape the technical groundwork agents will rely on: agent-ready APIs, rich product and catalogue data, identity, payments, and guardrails for trust, security and privacy. Keep ASOS aligned with emerging agent standards and protocols. Make change happen. Take what works from prototype to production with the teams who will own it, so promising ideas become secure, reliable and observable customer experiences. Bring people with you. Share demos, findings and practical guidance across the engineering community, and help colleagues build confidence with agentic technology. Stay responsible. Champion responsible AI. Customer trust, data protection and transparency come first in everything we try. Technical leadership Be a technical authority across front-end and back-end systems: guide teams, solve problems, review and underwrite designs, and act as the point of escalation for the toughest engineering challenges. Work across codebases and platforms to level up each one, using shared best practice and consistent architecture where it makes sense. Own and evolve the architecture of our front-end and microservice landscape. Set direction, make and record sound architectural decisions, and weigh trade-offs clearly. Shape how front ends and back ends fit together, including API design, contracts, integration patterns and the boundaries between teams and services. Design for scale. Make sure our systems stay fast, available and cost-effective through peak trading periods and as the business grows. Champion performance, reliability, security and accessibility in everyday delivery, from the customer's device through to our services and infrastructure. Engineering

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Source: https://jobsbylevel.com/jobs/principal-software-engineer-at-asos-5919fe

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