Full-Stack .NET Developer

Job description

CGI UK Careers – No holding back

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Position Description:

At CGI, we’re transforming industries through secure, scalable, and intelligent software solutions. As a Full-Stack .NET Developer, you’ll design and deliver modern cloud-native applications that drive real business impact. You’ll work with cutting-edge tools, collaborate across teams, and shape solutions that matter—while developing your skills in an environment that values innovation, ownership, and support.

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’re proud to hold a Gold Award for our support of the Armed Forces Corporate Covenant. Join us and be part of a friendly community that supports your career growth.

Due to the secure nature of the programme, you will need to hold UK Security Clearance or be eligible to obtain it. This is a hybrid role.

Your future duties and responsibilities:

In this role, you’ll design, build, and deliver secure, scalable applications using the Microsoft stack. Working across the full stack, you’ll create modern solutions that improve how our clients work. You’ll collaborate with talented teams, contribute ideas, and take ownership of key technical decisions to drive innovation and quality.

Key responsibilities:

• Develop: Create web applications with ASP.NET Core, C#, and modern JavaScript frameworks.
• Integrate: Build APIs and connect to cloud and AI/ML services.
• Deploy: Deliver cloud-native apps using Azure, Docker, and Kubernetes.
• Secure: Apply best practices for security and compliance.
• Modernise: Refactor legacy systems and enhance performance.
• Collaborate: Work closely with DevOps, QA, and product teams in Agile environments.

Required qualifications to be successful in this role:

Required qualifications to be successful in this role
You should bring solid full-stack .NET development experience, strong coding standards, and a passion for modern engineering.

• Experience with ASP.NET Core, C#, and SQL.
• Understanding of secure coding and authentication standards.
• Knowledge of Infrastructure as Code tools (Bicep, Terraform).
• Desirable experience in React, Angular, or Blazor.
• Desirable experience with Azure, DevOps, and containerisation (Docker/Kubernetes).

Skills:

·  .NET
·  Full Stack Development

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.

Come join our team—one of the largest IT and business consulting services firms in the world.