Java Software Developer (DV Security Clearance)

Position Description:

At CGI youll play a pivotal role in delivering mission-critical software that directly supports national defence outcomes. Working at the heart of a secure Defence programme youll help shape resilient high-quality systems that enable our clients to operate with confidence. Youll 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 youll 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 youll be part of an open friendly community of experts. Well 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.

Your future duties and responsibilities:

In this role you will design develop and support secure high-quality Java-based solutions that underpin a complex defence system. Youll 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 youll 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 Framework

Skills:

• .NET
• C
• Java
• NetBeans
• Oracle
• TOAD

What you can expect from us:

Together as owners lets turn meaningful insights into action.

Life at CGI is rooted in ownership teamwork respect and belonging. Here youll 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. Thats why we call ourselves CGI Partners rather than employees. We benefit from our collective success and actively shape our companys strategy and direction.

Your work creates value. Youll 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.

Youll shape your career by joining a company built to grow and last. Youll 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 teamone of the largest IT and business consulting services firms in the world.