We are seeking a Senior Java Developer to work at IBM, supporting our Public Sector and Defence clients by designing and building high-quality applications using Java/JEE and modern web technologies. In this role, you will develop application features, integrate systems, and apply best-practice engineering techniques such as dependency injection, TDD, and CI/CD. If you enjoy creating secure, dependable solutions and collaborating with technical teams, we'd love to hear from you. Responsibilities

Design, develop, and maintain applications using Java/JEE and related frameworks. Build web components using modern Java frameworks and languages. Apply enterprise development practices such as dependency injection, inversion of control, aspect‑oriented programming, functional programming, and test‑driven development. Develop secure, efficient data access using appropriate data access frameworks and transaction management. Support integration with wider enterprise and legacy systems common within Public Sector and Defence environments. Participate in DevOps‑aligned practices including CI/CD, automated testing, and version control. Troubleshoot and resolve application issues to maintain reliability and service quality. Work collaboratively with analysts, testers, architects, and fellow developers to ensure successful delivery. Depending on experience, provide technical coordination, mentoring, or ownership of specific technical areas.

Required technical and professional expertise

Experience developing applications using Java and JEE technologies. Knowledge of Java frameworks such as Spring. Understanding of web technologies, including JSP and Servlets. Familiarity with dependency injection, inversion of control, and aspect‑oriented programming. Awareness of functional programming ideas as applied in Java. Experience working with test‑driven development. Ability to use data access tools such as JPA, Hibernate, or similar frameworks. Understanding of transaction management approaches. Basic knowledge of batch processing principles. Experience creating and integrating APIs. Exposure to DevOps practices, including CI/CD pipelines, automation, and Git‑based workflows. Strong skills in identifying, analysing, and resolving issues. Good communication and teamwork abilities. Capability to deliver work independently, coordinate with others, or take ownership of specific development areas depending on experience.

Desirable Certifications

Oracle Certified Associate, Java Programmer (OCA) Oracle Certified Professional, Java Programmer (OCP) Spring Professional Certification Spring Boot Certification AWS Certified Developer Azure Developer Associate Docker or Kubernetes Certification

This role is subject to pre‑employment screening in line with the UK Government's Baseline Personnel Security Standard (BPSS). An additional range of Personal Security Controls referred to as National Security Vetting (NVS) may apply, this could include meeting the eligibility requirements for the enhanced Security Check (sSC) or enhanced Developed Vetting (eDV). Benefits

Tools and policies to support work‑life balance such as flexible working approaches, sabbatical programs, paid paternity leave, maternity leave and an innovative maternity returners scheme. More traditional benefits, such as 25 days holiday (in addition to public holidays), private medical, dental & optical cover, online shopping discounts, an Employee Assistance Program, life assurance and a group pension plan through salary sacrifice.

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