Senior Java Engineer (Kubernetes, Kafka, Docker) – Hybrid

Company: Salt Digital Recruitment
Apply for the Senior Java Engineer (Kubernetes, Kafka, Docker) – Hybrid
Location: London
Job Description:

Senior Java Engineer (Kubernetes, Kafka, SpringBoot) – Finance – London

Daily rate: £550 – £750 (inside IR35) – Duration: 12 months – Hybrid: 8 days per month – Start: ASAP

A banking client is looking for a Senior Java Engineer with Kafka and Docker skills to join the team on a freelance basis. Must be based in the UK and be happy to be on site 8 days per month which is mandatory.

Responsibilities & Duties

  • Working as part of an Agile development team to deliver the migration of the legacy application to a new event‑based and service‑oriented architecture solution, working in collaboration with the Solution Architect, Technical Lead, Application architects and other stakeholders.
  • Lead delivery of a coherent end‑to‑end IT solution that meets both functional and non‑functional requirements and ensures compliance with the Enterprise engineering and architecture standards.
  • Ensure end‑to‑end consistency of solution delivery across platforms and teams by organising walkthroughs of the solution with delivery teams.
  • Ensure that the solution meets guidelines and standards for design and development; undertake hands‑on development and coach staff in the new technologies used. The successful candidate will be expected to support the development of more junior colleagues.

Technical Skills

  • Strong systems development experience at all stages (design, development, testing, live implementation and post‑implementation support).
  • Strong hands‑on Object‑Oriented Design skills.
  • Strong core Java programming skills.
  • Experience developing services/micro‑services in Java.
  • Experience developing containerised services using Docker and Kubernetes.
  • Hands‑on SpringBoot skills.
  • Experience deploying on Unix or Linux.
  • Hands‑on experience using the Kafka ecosystem.
  • Experience with profiling and performance tuning.
  • Experience with Behaviour‑Driven and Test‑Driven development principles and skills.
  • Experience with Public Cloud development.

Desirable Skills

  • Working in an Agile development team.
  • Designing and implementing platform‑independent, database‑independent event‑driven applications.
  • Database design skills in technologies such as Oracle, Splunk.
  • DevOps principles, processes, and tooling.
  • IBM MQ Messaging Standards (ISO 15022, ISO 20022, JSON).
  • Working in Financial Market Infrastructure and/or Regulated environments.

Rates depend on experience and client requirements.

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Posted: June 6th, 2026