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Senior Backend Engineer - Commercial Technology

Job in Greater London, London, Greater London, W1B, England, UK
Listing for: ON RUNNING
Full Time position
Listed on 2026-02-27
Job specializations:
  • Software Development
    Backend Developer, Cloud Engineer - Software
Salary/Wage Range or Industry Benchmark: 60000 - 80000 GBP Yearly GBP 60000.00 80000.00 YEAR
Job Description & How to Apply Below
Location: Greater London

Overview

In short:
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.

Your

story

A strong background in backend development, with proven experience building and shipping high-quality software. Proficiency in Node.js and Type Script, with a deep understanding of modern backend frameworks. Hands-on experience with NestJS is a significant advantage. Solid experience in designing, building, and consuming Graph

QL APIs. Strong knowledge of relational databases (e.g., Postgre

SQL) and data modeling. Hands-on experience with cloud platforms (GCP is a plus) and containerization technologies (Docker, Kubernetes). You are a collaborative team player with excellent communication skills, comfortable working in an agile environment. Bonus points for experience with: ORM tools like Mikro

ORM Event-driven systems (e.g., Kafka, BullMQ, Pub/Sub) E-com ecosystems

  • Strong background in backend development, with proven experience building and shipping high-quality software.
  • Proficiency in Node.js and Type Script, with a deep understanding of modern backend frameworks.
  • Hands-on experience with NestJS is a significant advantage.
  • Solid experience in designing, building, and consuming Graph

    QL APIs.
  • Strong knowledge of relational databases (e.g., Postgre

    SQL) and data modeling.
  • Hands-on experience with cloud platforms (GCP is a plus) and containerization technologies (Docker, Kubernetes).
  • You are a collaborative team player with excellent communication skills, comfortable working in an agile environment.
  • Bonus points for experience with ORM tools like Mikro

    ORM;
    Event-driven systems (e.g., Kafka, BullMQ, Pub/Sub); E-com ecosystems.
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Position Requirements
10+ Years work experience
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