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Lead Software Engineer - Finance Technology

Job in Greater London, London, Greater London, W1B, England, UK
Listing for: ON RUNNING
Full Time position
Listed on 2026-02-17
Job specializations:
  • IT/Tech
    Data Engineer, Data Security
Job Description & How to Apply Below
Location: Greater London

Overview

In short:
As a Senior Engineer in the Finance cluster, you will architect and build the technological infrastructure that powers On's global financial operations. You will play a pivotal role in transitioning our finance ecosystem toward a "North Star" architecture — moving away from legacy patterns toward a high-performance, event-driven landscape. At On, we believe everyone in the world should have access to the best sportswear.

For this to happen, we need high-performing, robust financial solutions that ensure our global growth is supported by accurate data, compliant processes, and efficient automation across all legal entities. By leveraging Kafka for real-time data streaming and NestJS for robust microservices, you will ensure our financial systems — from global tax compliance to automated bank integrations — are scalable, reliable, and future-proof.

Responsibilities
  • Architect and build the financial infrastructure that powers On's global operations.
  • Lead the transition to a North Star architecture, moving from legacy patterns to a high-performance, event-driven landscape.
  • Ensure scalable, reliable financial systems with accurate data, compliant processes, and efficient automation across all legal entities, leveraging Kafka and NestJS.
Qualifications
  • Type Script Mastery:
    Extensive experience building backend services specifically with NestJS and Node.js.
  • Streaming Expertise:
    Proven experience implementing Apache Kafka in production environments to handle high-throughput data.
  • Logical Problem Solver:
    Proficient in leading technical discovery and breaking down big migrations into manageable, iterative releases.
  • Cloud & Dev Ops Native:
    Strong track record with Kubernetes, Terraform, and automating deployments through Git Hub Actions.
  • Domain Curiosity:
    Technical experience with ERP systems (D365 F&O) and financial processes such as landed cost, tax engines, or CNAB bank integrations is a plus.
  • Collaborative Partner:
    Ability to communicate effectively with both technical peers and Finance stakeholders to translate business needs into architectural requirements.
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