Java Developer (Security Clearance)

CGI; Leatherhead; On-site; GBP 80,000 - 100,000; Full time

Job summary

A global technology consultancy based in Leatherhead seeks an experienced Java developer to design and build secure Java services and RESTful APIs. This role requires strong communication skills and experience in testing, all within a secure delivery-focused environment. Successful candidates will possess SC Clearance and must be willing to work full-time at the Leatherhead office. Join a supportive community focused on delivering impactful solutions and enhancing your career within a dynamic team.

Benefits

Competitive salary

Excellent pension

Private healthcare

Share scheme

Qualifications

• Experienced Java developer with a strong background in RESTful services.
• Excellent communication and teamwork skills.
• Sole UK nationality with active SC Clearance.

Responsibilities

• Design and develop secure Java services and RESTful APIs.
• Test and assure through automated unit and integration testing.
• Collaborate within a SAFe Agile delivery model.

Skills

Java

RESTful (REST-APIs)

GIT

Tools

JUnit

GitLab Runner

Jenkins

Job description

Position Description

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 genuine 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

• 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

Skills

• GIT
• GIT
• Java
• RESTful (REST‑APIs)

What you can expect from us

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.