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Principal Engineer - Java (Oxfordshire)

London, United Kingdom (Britain / UK)

Apply by 28 Jul 2026

UK £95,000

Job Ref.: 56676

Job Type: Permanent

Job Description

We are looking for an experienced and driven Principal Engineer focused on Java backend expertise to guide and build one of two brand-new product teams based in Oxford

You’ll serve as both the lead engineer and line manager, taking ownership of our client's core transformation projects.

This role offers a unique opportunity to make a tangible impact on critical user-facing products.

In this role, you will:
 
  • Lead a new squad of 4 engineers and a Product Manager
  • Be responsible for re-architecting an existing product with zero customer downtime
  • Remain hands-on in  Java and Micronaut , JavaScript/TypeScript, contributing code weekly
  • Define and uphold best engineering practices and team standards
  • Influence architectural decisions and identify opportunities to simplify complex systems
  • Coach and grow your engineering team, fostering a collaborative, low-ego culture
The ideal candidate:
 
  • Has strong coding skills in Java and JavaScript/TypeScript, with proficiency in Angular
  • Enjoys working with legacy systems and improving them
  • Has prior experience as a Tech Lead or Engineering Manager
  • Comfortably navigates technical architectural decisions and system design trade-offs
  • Understands how to balance high-quality engineering with efficient delivery
  • Communicates clearly with technical and non-technical stakeholders alike
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