Java jobs in United Kingdom

Senior Software Developer (Java)

As a Senior Java Developer at CGI, you'll design and deliver robust, high‑performing software solutions that help clients solve complex business challenges. You'll play a leading role in building scalable, enterprise‑grade applications using Java and Spring Boot, shaping technology outcomes that drive lasting impact. Working within a collaborative and Agile environment, you'll guide and mentor others while applying your expertise to deliver projects that transform industries. You'll be part of a culture that values ownership, creativity, and support, where your technical skills and ideas will help clients achieve meaningful results and where your career can grow in any direction you choose.

CGI was recognised in the Sunday Times Best Places to Work List 2025 and has been named a UK "Best Employer" by the Financial Times. We offer a competitive salary, excellent pension, private healthcare, plus a share scheme (3.5% + 3.5% matching) which makes you a CGI Partner not just an employee. We are committed to inclusivity, building a genuinely diverse community of tech talent and inspiring everyone to pursue careers in our sector, including our Armed Forces, and are proud to hold a Gold Award in recognition of our support of the Armed Forces Corporate Covenant. Join us and you'll be part of an open, friendly community of experts. We'll train and support you in taking your career wherever you want it to go.

Due to the secure nature of the programme, you will need to hold UK Security Clearance or be eligible to go through this clearance.

In this role, you will design, build, and deliver scalable Java applications that meet diverse client needs. You'll lead by example in applying engineering best practices, contribute to Agile ceremonies, and ensure software quality through testing and code reviews. You'll collaborate with cross‑functional teams to develop integrated solutions that deliver measurable business value while supporting and coaching junior developers to enhance capability across the team.

• Design, develop, and maintain enterprise‑level Java applications using Spring Boot
• Collaborate with clients and teams to define and deliver robust, scalable solutions
• Contribute to all stages of the software development lifecycle
• Lead Agile ceremonies and support continuous improvement initiatives
• Ensure code quality and maintainability through reviews and testing
• Mentor junior developers and foster a culture of collaboration and learning
• Engage with stakeholders to align technical outcomes with business goals

You should have a strong background in Java development with experience in designing and delivering enterprise‑grade applications. You'll combine solid technical capability with collaboration and communication skills to drive successful client outcomes.

• Proven experience in Java development (Java 8 or higher)
• Strong knowledge of Spring Boot and RESTful API development
• Experience with Agile methodologies using Jira, Confluence, and Git
• Strong understanding of software engineering best practices and testing
• Excellent communication and stakeholder management skills
• Experience mentoring or leading technical teams

• Experience in IT consulting or client‑facing roles
• Knowledge of AWS, Azure, or GCP
• Familiarity with containerisation tools (Docker, Kubernetes) and CI/CD pipelines
• Exposure to microservices architecture and API integration

• Java
• RESTful (Rest‑APIs)
• Spring Boot

Together, as owners, let's turn meaningful insights into action.

Life at CGI is rooted in ownership, teamwork, respect and belonging. Here, you'll reach your full potential because…

You are invited to be an owner from day 1 as we work together to bring our Dream to life. That's why we call ourselves CGI Partners rather than employees. We benefit from our collective success and actively shape our company's strategy and direction.

Your work creates value. You'll develop innovative solutions and build relationships with teammates and clients while accessing global capabilities to scale your ideas, embrace new opportunities, and benefit from expansive industry and technology expertise.

You’ll shape your career by joining a company built to grow and last. You'll be supported by leaders who care about your health and well‑being and provide you with opportunities to deepen your skills and broaden your horizons.

Come join our team‑one of the largest IT and business consulting services firms in the world.

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