Job Vacancy Java Software Developer (DV Security Clearance)

Lincoln

CGI

Job position Java Software Developer (DV Security Clearance)

Permanent

As soon as possible

Lincoln, England, United Kingdom

Published on 25/01/2026

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At CGI, you’ll play a pivotal role in delivering mission-critical software that directly supports national defence outcomes. Working at the heart of a secure Defence programme, you’ll help shape resilient, high-quality systems that enable our clients to operate with confidence. You’ll be empowered to take ownership of complex challenges, collaborate with experts across disciplines, and innovate using modern standards and best practices. Supported by a culture that values knowledge-sharing, creativity and long-term career growth, you’ll have the opportunity to make a lasting impact while developing solutions 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 is a full-time, on-site position based 5 days per week at a site in Lincoln.

Candidate profile

In this role, you will design, develop and support secure, high-quality Java-based solutions that underpin a complex defence system. You’ll take ownership of the full software lifecycle, from understanding user needs and shaping technical solutions through to deployment, operation and continuous improvement. Working closely with engineers, analysts and users, you’ll help ensure systems remain robust, resilient and fit for purpose, while mentoring junior colleagues and contributing to a collaborative, high-performance environment.

You will also play a key role in improving standards and practices, supporting integration and testing activities, and resolving live service issues to maintain operational effectiveness and performance.

Key responsibilities include:

• Develop & deliver clean, secure and well-tested software aligned to modern standards

• Lead & support system operation, monitoring and fault resolution in live environments

• Collaborate & influence across disciplines to shape effective technical solutions

• Improve & optimise system resilience, stability and performance

• Coordinate & support build, integration and testing activities

• Coach & mentor junior team members, sharing knowledge and best practice

Required qualifications to be successful in this role

You will be an experienced Java developer with a strong background in web technologies and enterprise systems, comfortable working in secure, mission-critical environments. You should demonstrate a broad technical skillset, an analytical mindset, and the ability to take responsibility for both delivery and continuous improvement within a collaborative team.

Essential qualifications and experience:

• Strong commercial experience in Java development

• Significant experience installing and configuring web technologies, including Apache and Solr

• Experience with proxy server configuration

• Strong understanding of JSON data structures and RESTful web services

• Experience authoring XSL/XSLT and working extensively with XML

• Strong knowledge of Microsoft Server OS, including Hyper-V

• Experience with requirements engineering and testing techniques

• Ability to use mapping tools such as Altova MapForce

• Experience creating lightweight user interfaces using HTML/CSS

• Experience with Oracle Forms, Reports, PL/SQL and SVN

• Familiarity with tools such as NetBeans, TOAD, JDeveloper and TortoiseSVN

• Experience working in both Windows and Unix environments

• Exposure to additional languages such as C++ or .NET Framework

Working environment

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.

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

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Java Software Developer (DV Security Clearance)

CGI