Le poste Senior Software Engineer (React)
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At CGI, you will play a key role in shaping intuitive, high-performing digital experiences that deliver real value to clients and end users. As a React Developer, you will contribute to building scalable front-end solutions that support business transformation and innovation across industries. Working within a collaborative and forward-thinking environment, you will have the opportunity to take ownership of your work, contribute creative ideas, and help deliver impactful outcomes. CGI empowers you to grow your expertise, work with modern technologies, and make a meaningful difference while being supported by a strong, inclusive team culture.
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.
Due to the secure nature of the programme, you will need to hold UK Security Clearance or be eligible to go through this clearance.
Profil recherché
You will play a key role in ensuring performance, usability, and maintainability across applications, while being supported to develop your skills and explore emerging technologies.
• Develop responsive web applications using React.js
• Build reusable components and front-end libraries
• Translate UI/UX designs into high-quality code
• Optimise application performance across devices and browsers
• Integrate front-end solutions with APIs and backend services
• Troubleshoot technical issues and bugs
• Collaborate within cross-functional agile teams
• Review code quality through peer reviews and best practices
• Innovate by staying current with modern front-end technologies
Required qualifications to be successful in this role
You will bring strong experience in React development and modern JavaScript, with a passion for building high-quality user interfaces. You should be comfortable working in collaborative environments, demonstrate attention to detail, and have the ability to solve problems effectively while contributing to continuous improvement.
• You should have proven experience developing applications using React.js
• Strong proficiency in JavaScript (ES6+) and front-end development principles
• Experience with HTML5, CSS3, and responsive design techniques
• Familiarity with RESTful APIs and integration patterns
• Proven ability to write clean, maintainable, and well-documented code
• Experience with version control systems such as Git
• Understanding of performance optimisation and debugging techniques
#LI-JW1
Environnement de travail
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.
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Senior Software Engineer (React)
CGI
