Senior Software Engineer in Leeds

At CGI, our Senior Software Engineers play a pivotal role in delivering the innovative, scalable, and secure solutions that help our clients transform their organisations. Joining our Leeds-based engineering community, you’ll contribute to high-impact projects that shape the future of digital services, applying modern engineering practices to build real-world value. You’ll be part of a collaborative, supportive environment where you can take ownership of your work, explore new approaches, and thrive creatively as you help design and deliver technology that makes a lasting difference.

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 hybrid position.

Your future duties and responsibilities:

• Design, build, and deliver high-quality software that underpins critical client services.
• Work across modern technologies such as .NET, Python, and TypeScript (backend programming), contributing to everything from architecture decisions to hands-on development.
• Collaborate closely with multidisciplinary teams, applying engineering best practice and shaping solutions from concept to deployment.
• Take ownership of your work, exploring creative approaches while being supported by experienced engineers who share knowledge, review code, and help you grow.

Key Responsibilities:

• Design & Develop: Build scalable, maintainable solutions using .NET, Python, or TypeScript (backend programming).
• Lead & Contribute: Shape architecture and design discussions to ensure performance, security, and scalability.
• Collaborate & Deliver: Work within Agile teams to plan, estimate, iterate, and deliver value.
• Automate & Optimise: Implement CI/CD pipelines and apply clean code, testing, and automation principles.
• Build & Evolve: Develop APIs, microservices, and web applications, often leveraging cloud environments.
• Coach & Support: Mentor peers and share knowledge through reviews and collaborative engineering practices.

Required qualifications to be successful in this role:

To succeed in this role, you should bring strong hands-on software engineering experience, a solid understanding of modern development principles, and the ability to work effectively within collaborative Agile teams. You’ll be confident designing and building solutions across one or more major technology stacks, with a proactive approach to quality, communication, and continuous improvement.

Essential qualifications:

• Experience with .NET/C# or Python or TypeScript (backend programming)
• Strong understanding of SOLID principles and clean architecture
• Experience working in Agile environments with CI/CD and automated testing
• Proficiency with Git-based workflows
• Ability to communicate clearly with technical and non-technical stakeholders

Desirable:

• Cloud exposure (Azure, AWS, or GCP)
• Experience with Docker, Kubernetes, Terraform, or Bicep
• Knowledge of event-driven architectures or messaging systems
• Understanding of secure coding practices

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.