Senior Java Software Engineer

Job description

SmartChoice are supporting a data platform programme for a global financial services organisation and require a number of senior backend (Java) developers to join on a 6 month contract.

In this role you will be responsible for:

• Design and implement core functionality within Data Fabric backend services.
• Develop and enhance rule definitions used for policy enforcement.
• Integrate with additional backend systems and maintain up‑to‑date API documentation through continuous documentation practices.
• Ensure high levels of automated test coverage using JUnit, Mockito, and BDD frameworks such as Cucumber.
• Take ownership of CI/CD pipelines, code quality standards, and service observability.

Mandatory experience includes:

• Strong experience building backend services using Java (17/21) and Spring/Core frameworks.
• Deep knowledge of JDBC, SQL parsing/validation, and query optimisation.
• Solid understanding of SQL query planning and execution paths.
• Strong grasp of data structures and algorithms.
• Robust testing skills, including JUnit5, Mockito, Cucumber, and designing deterministic tests.
• Proficiency in clean architecture principles, dependency injection, and modular service design.
• Familiarity with tooling such as Docker, Jenkins, Maven, and code‑quality tools (Checkstyle, Jacoco).

**Please note that we can not offer sponsorship for these position**

Extra information

Status

Open

Education Level

Secondary School

Location

London Area

Type of Contract

Full-time jobs

Published at

03-03-2026

Profession type

ICT

Full UK/EU driving license preferred

No

Car Preferred

No

Must be eligible to work in the EU

No

Cover Letter Required

No

Languages

English