Senior Software Engineer

CGI UK Careers:
Big enough small enough complex enough CGI in Leeds

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Position

Description:

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 youll contribute to high-impact projects that shape the future of digital services applying modern engineering practices to build real-world value. Youll 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.

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 hybrid position.

Your future duties and responsibilities:

In this role you will design build and deliver high-quality software that underpins critical client services. Youll work across modern technologies such Python and Type Script(backend programming) contributing to everything from architecture decisions to hands-on development. Youll collaborate closely with multidisciplinary teams applying engineering best practice and shaping solutions from concept to deployment.

Youll take ownership of your work exploring creative approaches while being supported by experienced engineers who share knowledge review code and help you grow. Your contributions will directly influence project success system performance and the long-term evolution of key platforms.

Design & Develop:
Build scalable maintainable solutions Python or Type Script(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. Youll 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 /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

#LI-MW2

Skills:

• .NET
• Python
• React Java Script
• Typescript

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.

That same commitment to fairness extends to how we use technology. To…