CGI

Offre d'emploi Senior Software Engineer (Full Stack)

Royaume-Uni

CGI

Women in Tech partner
Publiée le 04/11/2026

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At CGI, our Senior Full Stack Software Engineers play a pivotal role in shaping the digital services that help organisations innovate, grow and succeed. As we expand our engineering capability across our business, you'll deliver secure, scalable solutions that combine intuitive user experiences with robust back-end technology. You'll have the freedom to take ownership of complex engineering challenges, explore creative approaches and influence technical decisions that deliver meaningful results for our clients. Working alongside supportive, multidisciplinary teams, you'll continue developing your expertise while helping drive engineering excellence, modernise critical services and create lasting value for businesses and communities.

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 you’ll be part of an open, friendly community of experts. We’ll train and support you in taking your career wherever you want it to go.

You will need to hold UK Security Clearance (SC level) or be eligible to go through this clearance. Our teams operate within a flexible hybrid working model, however on-site requirements vary by project, so the ability to travel (expensed away from base office) as required to meet client needs is essential.

Profil recherché

In this role, you will take ownership of designing, developing and delivering secure, scalable full stack applications that support critical client services. Working across the complete software development lifecycle, you'll combine modern front-end technologies with robust back-end engineering to create reliable, high-performing digital solutions. You'll influence technical approaches, champion engineering best practices and help ensure every solution delivers meaningful value to clients and users.

You'll collaborate with talented engineers, architects and stakeholders to solve complex challenges, explore innovative technologies and continuously improve delivery. Within CGI's supportive engineering community, you'll have opportunities to share your expertise, develop new capabilities and contribute to a culture of technical excellence and continuous learning.

Key responsibilities:

• Design & Deliver: Architect, develop and maintain secure, scalable full stack applications aligned with client and business needs.

• Build & Integrate: Develop robust REST APIs, microservices and back-end services that enable seamless integration.

• Create & Enhance: Build and improve responsive user interfaces using modern front-end frameworks.

• Innovate & Modernise: Develop cloud-native applications leveraging AWS, Azure or Google Cloud Platform.

• Champion Quality: Embed automated testing, secure coding practices and engineering standards throughout development.

• Collaborate & Influence: Work closely with multidisciplinary teams and stakeholders to shape technical solutions and deliver successful outcomes.

• Automate & Deploy: Implement and enhance CI/CD pipelines to support efficient, reliable software delivery.

• Optimise & Improve: Identify opportunities to enhance application performance, reliability, maintainability and scalability.

• Build, test & maintain: reliable services using automated testing, code review, secure development practices and appropriate monitoring.

Required qualifications to be successful in this role

You should bring proven experience delivering full stack software solutions, with strong technical expertise across modern front-end and back-end technologies. You'll be confident working in Agile environments, solving complex engineering challenges and collaborating with others to deliver secure, high-quality applications. Your ability to take initiative, explore new approaches and share knowledge will help you succeed within CGI's collaborative engineering community.

Experience in at least four ideally more of the areas below:

• Proven experience as a Full Stack Software Engineer, delivering complex applications across the software development lifecycle.

• Strong proficiency in TypeScript and professional experience in either Java or Python.

• Hands-on experience with modern front-end frameworks such as React, Angular or Vue.

• Solid understanding of REST APIs, microservices and modern application architecture.

• Experience developing or deploying applications using AWS, Microsoft Azure or Google Cloud Platform.

• Familiarity with containerisation and orchestration technologies, including Docker and Kubernetes.

• Experience working within Agile development teams and implementing CI/CD practices.

• Strong understanding of software engineering best practices, including automated testing, security and code quality.

• Excellent problem-solving, communication and collaboration skills, with the ability to contribute to technical discussions and delivery decisions.





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Environnement de travail

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.



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 team—one of the largest IT and business consulting services firms in the world.
London, England, United Kingdom
> 1 000 salariés
ESN
We are a global business with 91,500 professionals across hundreds of locations worldwide, providing end-to-end IT and business process services that drive our clients’ businesses. In the UK alone, we have around 6,000 member-partners working across 19 towns and cities, doing everything from writing complex code to designing sophisticated software solutions. The work we do powers some of the most ambitious projects that touch the lives of many. Our approach sets us apart, characterised by our proximity model, international presence, expertise, and operational excellence. We organise our operations within metro markets where our clients have concentrated footprints, empowering our local teams to build trusted, in-person relationships. As you build your career here, you’ll develop your skills, share your insights, and work side-by-side with colleagues and clients on innovative solutions that address the most complex issues. Our commitment to ownership, flexibility, and being approachable makes us easy to do business with. Join us, and together, as owners, let’s turn meaningful insights into action to meet the needs and balance the interests of our clients, shareholders, communities, and each other. Benefits: - Insurance coverage - Medical benefits - Pension plan - Member Assistant Programme - Check4Cancer - Flexible time off - Share Purchase Plan - Member discounts - Dental benefits - Vision benefits - Profit Participation Plan - Health and Wellbeing Programme

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Senior Software Engineer (Full Stack)

CGI

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