Lead Full Stack Software Engineer (.NET, Angular, AWS)

Position Description

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.

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.

Your future duties and responsibilities

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.

Required Qualifications To Be Successful In This Role

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.

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.