Java Engineer

In this role, you will contribute to the design, development and maintenance of software systems within a modern engineering and DevOps environment. Working as part of a collaborative team, you will help build reliable, maintainable and scalable solutions across a microservices-based architecture, with a primary focus on Java while remaining open to working across the wider stack where needed.

You will collaborate closely with other engineers to review code, improve delivery practices and support deployment and operational processes. You will be encouraged to apply sound engineering judgement, explore new ideas and technologies, and continuously improve both the solutions you build and the way the team works.

Key responsibilities include:

• Design & develop backend services and APIs using Java (or C# where appropriate)

• Build & maintain scalable solutions within a microservices architecture

• Collaborate on code design, reviews and technical decision-making

• Contribute to front-end features using React and TypeScript when required

• Support deployment and operational processes using AWS and Kubernetes

• Improve team practices, tooling and delivery approaches

You will be a senior, hands-on engineer with strong Java experience and a broad understanding of modern software delivery. You will enjoy working collaboratively, be comfortable operating across technologies, and bring a practical, adaptable approach to solving problems in complex environments.

You should have:

• Strong backend development experience using Java (or C#)

• Experience building and supporting services within microservices architectures

• Familiarity with cloud and containerised environments (AWS, Kubernetes, Helm)

• Experience using Git, CI/CD pipelines and modern developer workflows

• Good communication skills and a collaborative, team-focused mindset

• Curiosity and willingness to learn across the stack and tooling

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 SC Clearance or be eligible to obtain it. This is a hybrid role, with an expectation of working 1-2 days per week on site in our Sheffield office, with flexibility for remote working for the rest of the time.

At CGI, you will help engineer secure, resilient systems that underpin critical services and deliver real-world impact. As a Senior Java Engineer, you will play a key role within a collaborative delivery team, designing and building scalable solutions that support complex programmes. You will be trusted to take ownership of your work, encouraged to bring curiosity and creativity to technical challenges, and supported by a culture that values learning, shared success and continuous improvement. This is an opportunity to deepen your expertise, broaden your skillset and make a meaningful contribution within an organisation that empowers its engineers., 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. Discover CGI London, England, United Kingdom > 1000 employees IT services We are a global business with 91,500 professionals across hundreds of locations worldwide, providing end-to-end IT and business process services that drive our clients' businesses. In the UK alone, we have around 6,000 member-partners working across 19 towns and cities, doing everything from writing complex code to designing sophisticated software solutions. The work we do powers some of the most ambitious projects that touch the lives of many. Our approach sets us apart, characterised by our proximity model, international presence, expertise, and operational excellence. We organise our operations within metro markets where our clients have concentrated footprints, empowering our local teams to build trusted, in-person relationships. As you build your career here, you'll develop your skills, share your insights, and work side-by-side with colleagues and clients on innovative solutions that address the most complex issues. Our commitment to ownership, flexibility, and being approachable makes us easy to do business with. Join us, and together, as owners, let's turn meaningful insights into action to meet the needs and balance the interests of our clients, shareholders, communities, and each other. Benefits: - Insurance coverage - Medical benefits - Pension plan - Member Assistant Programme - Check4Cancer - Flexible time off - Share Purchase Plan - Member discounts - Dental benefits - Vision benefits - Profit Participation Plan - Health and Wellbeing Programme