Senior Backend Engineer - Commercial Technology

On • London, England, United Kingdom • Posted June 14, 2026

Location London, England

Job Type Full-time

Category Computer Occupations

Posted June 14, 2026

Your Mission
As a Backend Engineer in our Commercial cluster, you will be at the heart of On's digital ecosystem. You will design, build, and scale the critical services that power our global e-commerce platform, B2B partner portals, and retail experiences. Your work will directly impact how we deliver product information, checkout process and end-to-end e-com user experience, to our customers and partners, ensuring a seamless and premium experience that drives our commercial success. 

What you'll do
Design, develop, and maintain robust and scalable backend services using our modern tech stack, with a primary focus on NestJS, TypeScript, and GraphQL.

Take ownership of key components within our Commercial cluster, ensuring they are performant, reliable, and meet the needs of various client applications (web, mobile, and third-party integrations).

Collaborate closely with frontend engineers, prod...
            

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