Lead Full Stack Software Engineer

At CGI, we operate and enhance critical digital platforms that support national regulatory services and deliver real-world impact. As a Lead Software Engineer within a key Managed Service team, you will play a central role in evolving a modern digital platform, balancing feature innovation with operational excellence. Working across a full-stack environment, you will guide technical direction, strengthen engineering practices and ensure resilient, high-performing services for our public sector client. This is an opportunity to shape platform strategy, mentor talented engineers and drive continuous improvement within a collaborative environment where your expertise directly contributes to secure, reliable digital services., In this role, you will act as a hands-on technical leader, contributing across both back-end (.NET/C#) and front-end (JavaScript/TypeScript, Angular) development while guiding the wider engineering team. You will set technical direction, promote best practice and support design and architectural decisions, helping colleagues solve complex challenges within a managed service environment. Alongside feature development, you will balance operational responsibilities including incident management, stakeholder engagement and service optimisation.

You will help mature Agile delivery practices, improve CI/CD pipelines and strengthen release processes, ensuring high-quality, reliable deployments using modern tooling such as Kubernetes, Jenkins and GitHub Actions. Through clear communication and strong ownership, you will drive continuous improvement across both platform capability and team performance.

Key responsibilities:

• Lead & Mentor - Provide technical leadership and guidance to the engineering team.

• Design & Develop - Contribute across .NET, Angular, Node.js and TypeScript solutions.

• Operate & Support - Manage incidents and support live services within a managed service model.

• Improve & Optimise - Enhance CI/CD pipelines and Agile release processes.

• Collaborate & Engage - Work closely with stakeholders and client representatives.

• Secure & Stabilise - Ensure resilient, scalable and high-performing platform operations.

To succeed, you will bring strong full-stack development experience combined with proven technical leadership in a support or application-focused environment. You will be confident balancing delivery and operational responsibilities, with solid experience in modern DevOps tooling, cloud environments and stakeholder engagement.

Essential qualifications:

• Strong experience in .NET (C#).

• Advanced JavaScript/TypeScript skills with Angular and Node.js.

• Advanced experience with Kubernetes and CI/CD tools (Jenkins and/or GitHub Actions).

• Working knowledge of AWS.

• Experience using GitHub or equivalent version control systems.

• Proven incident management and operational support experience.

• Experience working with ITSM tooling such as Jira.

• Demonstrated customer/client-facing communication skills.

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 may be required to undergo UK Security Clearance. This is a hybrid 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. 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