Senior/Lead Java Software Engineer

Euroclear · Poland

Salary not stated · Compare with UK Software Engineer pay →

Full-timeLeadMar 2026 · checked today

Division: Group Business Solutions (GBS)

Euroclear is migrating its CREST system from legacy applications to modernised Java-based applications running in a cloud-ready OpenShift-managed Kubernetes container platform. This migration will be an incremental process over a period of years and will incorporate new and improved functionality rather than be a straight “lift and shift”. This is an exciting, unique opportunity to join a large modernising programme using the latest Java-based technologies and infrastructure.

Our new technology will be Java based and use Event Hub technology (such as Kafka) for integration between the new migrated services and non-migrated legacy CREST system.

We are seeking a Senior/Lead Java Software Engineer with Kafka and Docker skills to join our Transformation journey.

Responsibilities & Duties

Responsibilities include but are not limited to:

  • Working as part of an Agile development team to deliver the migration of the legacy application to new event-based and service-oriented architecture solution, working in collaboration with the Solution Architect, Technical Lead, CREST application architects and other collaborators.
  • Lead delivery of a coherent end-to-end IT solution that meets both functional and non-functional requirements.
  • Ensuring that the IT solution aligns with the Enterprise engineering and architecture standards.
  • Ensuring end-to-end consistency of solution delivery across platforms and teams by, for instance, coordinating walkthroughs of the solution with delivery teams.
  • Ensuring that the solution meets guidelines and standards for design and development.
  • Undertaking hands-on development and mentor staff in the new technologies used.
  • Mentoring of more junior developers.

QualificationsCrucial Candidate Traits

The successful candidate will have proven solutions design and development skills and experience alongside validated strong systems development experience at all stages of the software delivery lifecycle.

Technical Skills

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

Soft Skills

  • Have the ability to empower those you mentor, coach & lead!
  • Be a stand-out colleague and role model, willing to participate in peer reviews and to be reviewed by peers
  • Be reliable, driven and able to work without close management and supervision
  • Possess encouraging communication and presentation skills to present proposals both orally and in writing
  • Have the demonstrable ability to complete work within agreed timescales and identify problems and provide the most suitable solution(s)

Desirable Skills

The following are not essential but would be a plus if the candidate can demonstrate any experience of:

  • Messaging Standards, for example ISO 15022, ISO 20022 and JSON.
  • 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
  • Working in Financial Market Infrastructure and/or Regulated environments

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