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hackajob is partnering with CGI to fill this position. Create a profile to be automatically considered for this role—and others that match your experience.
At CGI, we deliver secure, mission-critical systems that protect national interests and enable smarter decision-making across space, defence and intelligence. In this role, you will help shape high-impact solutions by building resilient Java services that transform complex data into meaningful insight for end users. Working within a collaborative, agile environment, you’ll have real ownership of outcomes, the freedom to innovate, and the support to grow your expertise while contributing to programmes that truly matter.
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 role is five days a week working in the Leatherhead Office.
Your future duties and responsibilities
In this role, you will design, build and test secure Java-based web services that interrogate and manipulate multiple data sources, delivering correlated information to front-end applications. You will work within a SAFe Agile framework, contributing to iterative delivery across structured sprints, taking ownership of your work while collaborating closely with other developers, testers and stakeholders in a fast-moving environment.
You will be encouraged to think creatively, adapt to changing requirements, and continuously improve solution quality. With strong team support around you, you’ll help ensure reliable delivery across development and, where required, production support activities.
Key responsibilities include:
Design & Develop secure Java services and RESTful APIs
Test & Assure through automated unit and integration testing
Collaborate & Deliver within a SAFe Agile delivery model
Adapt & Improve solutions in response to evolving requirements
Support & Maintain systems across the delivery lifecycle
Required qualifications to be successful in this role
You should be an experienced Java developer with a strong background in building and testing RESTful services, comfortable working in secure, delivery-focused environments. You will bring a pragmatic mindset, excellent communication skills, and the ability to adapt quickly while maintaining high engineering standards.
Essential qualifications:
Strong experience developing and automated testing of Java services
Recent hands-on experience building RESTful APIs
Excellent teamwork and communication skills
Sole UK nationality with active SC Clearance (no unrestricted travel permits)
Willingness to work full-time from CGI’s Leatherhead office (5 days per week)
Desirable experience:
Front-end development exposure (e.g. React with Jest)
JUnit and integration testing tools such as ReadyAPI
Git for source-code management
REST APIs using OpenAPI and JSON
SQL and PL/SQL scripting against Oracle databases
CI/CD tooling such as GitLab Runner or Jenkins
Nice to have:
Selenium for front-end integration testing
Understanding of SOAP services and Oracle SOA
Experience supporting production environments and release activities
hackajob is partnering with CGI to fill this position. Create a profile to be automatically considered for this role—and others that match your experience.