Senior Software Engineer; C# ​/.Net

Senior Software Engineer (C# / .Net) at Xibis Ltd

United Kingdom, UK Wide - Various

Employment Type:

Full Time

Position : J

At CGI, you’ll play a pivotal role in designing and delivering secure, scalable software solutions that help our clients modernise, transform and succeed. Joining a collaborative team of experts, you’ll shape critical platforms from architecture through to deployment, applying creativity, ownership and technical excellence to deliver real‑world impact. We empower our people to influence outcomes, innovate with confidence and grow their careers while working on meaningful programmes that shape the future of digital services across the UK.

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.

Due to the secure nature of the programme, you will need to hold UK Security Clearance or be eligible to go through this clearance.

• Design & Develop high-quality C# and .NET MVC applications
• Own & Improve authentication patterns and application architecture
• Build & Maintain CI/CD pipelines using Git Hub Actions
• Deploy & Operate containerised solutions using Docker and Kubernetes
• Collaborate & Innovate with engineers, architects and stakeholders
• Optimise & Support cloud-native solutions on AWS

You will bring strong hands‑on experience as a C# software engineer, with a passion for building reliable web applications and improving development practices. You should be comfortable working in cloud environments, contributing to Dev Ops pipelines and taking accountability for the quality and impact of your work while collaborating within supportive, high‑performing teams.

• Proven experience developing C# and .NET MVC web applications
• Strong understanding of CI/CD pipelines, ideally using Git Hub Actions
• Experience with AWS and cloud‑native application development
• Familiarity with Docker and Kubernetes
• Exposure to Type Script, Node.js or backend scripting
• A collaborative mindset with the ability to take ownership and drive solutions forward

• .NET
• Node.js

Life at CGI is rooted in ownership, teamwork, respect and belonging. You’ll develop innovative solutions, build relationships with teammates and clients and have access to global capabilities to scale your ideas. You’ll be supported by leaders who care about your health and well‑being and have opportunities to deepen your skills and broaden your horizons.