Senior Software Developer

Join CGI and help shape the digital services that support one of the UK’s most important public sector organisations. As a Senior Software Developer, you’ll play a key role in delivering secure, scalable solutions that enable our client to modernise their systems and improve services for millions of UK citizens. Working within a collaborative Agile environment, you’ll contribute to innovative cloud-based platforms, influence technical direction, and mentor others while developing solutions that have a meaningful impact. At CGI, you’ll be empowered to take ownership of your work, collaborate with talented colleagues, and continue growing your career through ongoing support and development., In this role, you will design, develop and enhance secure, high-performing backend applications that support the continued digital transformation of our client’s services. Working within a modern cloud environment, you’ll collaborate with architects, engineers, business stakeholders and client teams to deliver resilient solutions that improve critical public services. You’ll have the opportunity to influence technical direction, share your expertise across the team and contribute to engineering excellence through modern development practices.

You’ll work as part of an Agile delivery team, taking ownership of technical challenges from design through to deployment and operational support. Alongside developing scalable Java-based services, you’ll help drive continuous improvement across delivery processes, support production environments, and mentor colleagues to promote high-quality engineering standards and collaborative ways of working.

Key responsibilities

• Design & Develop secure, scalable backend applications using Java and modern frameworks.
• Architect & Deliver cloud-native solutions that meet business and user needs.
• Lead & Influence technical design discussions and contribute to architectural decisions.
• Collaborate & Support Agile delivery teams through sprint planning, stand-ups and retrospectives.
• Build & Integrate large-scale application components across complex technology environments.
• Automate & Improve deployment pipelines using CI/CD best practices and Infrastructure as Code.
• Monitor & Resolve production incidents, ensuring system reliability and operational excellence.
• Mentor & Share knowledge, supporting the growth and development of fellow engineers.
• Champion & Enhance engineering standards, continuous improvement and DevOps practices.

To succeed in this role, you’ll be an experienced software developer with strong backend Java expertise and a passion for building secure, scalable applications within cloud environments. You’ll combine excellent technical knowledge with strong communication skills, enabling you to collaborate effectively across multidisciplinary teams while taking ownership of complex technical challenges. Experience working in Agile environments and delivering high-quality software for enterprise-scale systems will be key to your success., * Strong commercial experience developing applications using Java, Spring Boot and Hibernate.

• Experience integrating with Identity and Access Management (IDAM) platforms such as ForgeRock, One Identity, Okta, Azure AD or Auth0.
• Proven experience with Jenkins and CI/CD pipelines.
• Experience reverse engineering existing applications and supporting legacy integrations.
• Strong understanding of Git version control and collaborative development practices.
• Experience working independently while contributing effectively within Agile delivery teams.
• Proficiency using Jira and Confluence to manage work and technical documentation.
• Strong analytical, troubleshooting and problem-solving skills.
• Excellent communication and stakeholder management skills., * Experience with Microsoft Azure cloud services.
• Knowledge of Terraform and Infrastructure as Code.
• Experience using Ansible for automation.
• Familiarity with DevOps practices, monitoring and observability tooling.
• Front-end development experience.
• Experience working within large-scale public sector or highly regulated environments.

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

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. This is a remote position.

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.

That same commitment to fairness extends to how we use technology. To support our recruitment team, AI tools may be used to help assess applications though they never replace human judgement. All hiring decisions remain entirely in the hands of our recruitment professionals.

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