Senior Full Stack Software Engineer (.NET & TypeScript)

Position Description:

At CGI youll help shape digital services that make a meaningful difference across the UK public sector. As a Senior Software Engineer youll play a key role in enhancing a live high-profile platform that supports a key regulatory body delivering innovative solutions that improve user experiences and provide measurable value to our client. Working alongside a collaborative team of experts youll have the opportunity to take ownership of technical delivery contribute new ideas and develop modern cloud-native solutions in an environment that supports your growth and recognises the impact you make.
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. Whilst this is a hybrid position it will require you to work on site at our Bristol office 2/3 days a week as required.

Your future duties and responsibilities:

In this role you will join a skilled delivery team responsible for enhancing and evolving a live digital service used by our key UK Government Department Client. Youll develop new functionality improve existing capabilities and help deliver frequent high-quality releases that provide tangible value to users. Working closely with CGI colleagues and client stakeholders youll contribute throughout the software development lifecycle ensuring solutions are secure scalable and aligned with business needs.
Youll have the opportunity to influence technical decisions share best practice and contribute to a culture of continuous improvement and collaborative delivery. As a senior member of the team youll take ownership of your work while supporting colleagues and helping drive successful project outcomes.
Key responsibilities
Design & Develop high-quality features and JavaScript/TypeScript technologies.
Build & Deliver secure scalable cloud-native applications hosted on AWS.
Collaborate & Engage with client stakeholders and multidisciplinary delivery teams.
Contribute & Improve application architecture coding standards and engineering best practices.
Develop & Maintain APIs backend services and user-facing functionality.
Support & Optimise CI/CD pipelines using GitHub Actions and modern DevOps practices.
Work & Innovate within an Agile delivery environment contributing to sprint planning reviews and retrospectives.
Mentor & Share knowledge with colleagues promoting continuous learning across the team.

Required qualifications to be successful in this role:

To succeed in this role youll bring strong experience developing modern software solutions using Microsoft technologies and JavaScript/TypeScript within Agile delivery teams. Youll be comfortable working directly with clients passionate about engineering quality and motivated by delivering innovative digital services that create lasting business value.
Essential qualifications
Strong commercial experience developing applications .
Excellent JavaScript and/or TypeScript development skills.
Experience working with MongoDB.
Experience developing and deploying containerised applications using Docker.
Knowledge of AWS cloud services.
Experience building and maintaining CI/CD pipelines using GitHub Actions.
Strong understanding of Agile software development practices.
Excellent communication skills with experience working directly with clients.
Ability to work collaboratively within multidisciplinary engineering teams.
Desirable skills
Jest
HapiJS
Kubernetes
Jenkins
Handlebars
Nunjucks
Node-RED
#LI-JW1

Skills:

• .NET
• Amazon Web Services Cloud
• Docker
• Github Actions
• JavaScript
• MongoDB
• Jenkins
• Kubernetes

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 support our recruitment team AI tools may be used to help assess applications though they never replace human judgement. All hiring decisions remain entirely in the hands of our recruitment professionals.

Come join our teamone of the largest IT and business consulting services firms in the world.