Full Stack Engineer (Gen AI Platforms)

About Capgemini Capgemini is an AI-powered global business and technology transformation partner, delivering tangible business value. We imagine the future of organizations and make it real with AI, technology and people. With our strong heritage of nearly 60 years, we are a responsible and diverse group of over 420,000 team members in more than 50 countries. We deliver end-to-end services and solutions with our deep industry expertise and strong partner ecosystem, leveraging our capabilities across strategy, technology, design, engineering and business operations. The Group reported 2025 global revenues of €22.5 billion. Responsibilities • Provide technical leadership to an agile, cross-functional development team • Define and communicate technical vision across multiple workstreams • Design scalable, secure, and resilient architectures for search and AI-powered systems • Make architectural trade-offs balancing performance, cost, reliability, and security • Collaborate with other Tech Leads to plan technical spikes and long-term technical strategy beyond sprint scope • Identify technical risks early and lead mitigation strategies • Architect systems leveraging: • LLM integrations (e.g., Azure OpenAI, OpenAI APIs, etc.) • Retrieval-Augmented Generation (RAG) • Semantic search and vector databases • Establish guardrails for AI systems including: • Evaluation frameworks • Observability and monitoring • Data governance and security considerations • Guide the team from experimentation → prototype → production-ready AI systems • Evaluate emerging AI technologies and assess suitability for public sector use cases • Champion Agile technical practices (TDD, pair programming, refactoring, CI/CD) • Lead DevOps adoption including build, release automation, and infrastructure improvements • Oversee automated testing strategy (unit, integration, performance) • Lead resolution of technical blockers and retrospective improvements • Ensure engineering standards are upheld across the team • Work closely with Product Owners and Business Analysts to prioritise business stories and technical investments • Collaborate with UX Designers for feasibility studies and solution estimation • Partner with Delivery Managers on long-term planning, system integrations, and resource forecasting • Represent the development team in governance and stakeholder meetings • Mentor and coach engineers to grow both technically and professionally Requirements • 5–7+ years of experience in web application development • Proven experience leading agile development teams • Strong hands-on experience with: • Node.js, TypeScript • Cloud platforms (Azure, AWS, GCP) • SQL & NoSQL databases • CI/CD pipelines • DevOps practices • Designed or led systems involving: • Search engines (crawl, index, ranking, relevance tuning) • Semantic search or vector search • RAG architectures • Production experience integrating LLMs into applications • Experience managing AI-related trade-offs: • Latency vs cost • Accuracy vs hallucination risks • Prompt engineering strategies • Model evaluation methodologies • Understanding of AI system governance, security, and responsible AI practices • Strong coaching and mentoring capabilities • Comfortable leading technical discussions and influencing stakeholders • Proactive self-starter with strong ownership mindset • Passionate about continuous improvement • Curious about emerging technologies and willing to experiment responsibly • Strong communication and stakeholder management skills • Meticulous attention to quality and engineering standards Let's talk about what's in it for you! Passionate people are Capgemini's Ace of Spades - join us to discover a career that will challenge, support and inspire you. Working at Capgemini you'll find the rewards are more than just financial. You will work alongside some very smart and inspiring people on exciting projects and you will also enjoy incredible benefits. We offer flexible work practices and 40 hours of self-development every year with a huge selection of learning opportunities to choose from. As 'Architects of Positive Futures', Capgemini actively supports the community in 3 ways: Diversity and Inclusion - we believe diversity of thought fuels excellence and innovation, which is why we positively encourage applications from suitably qualified candidates regardless of their gender identity, ethnicity, sexual orientation, religion, ability, intersex status or age. To support our commitment to diversity and inclusion, we celebrate special events and days of significance that are important to our employees such as Diwali, Bastille Day, Pride, IDAHOBIT, IWD and International day of people with Disabilities. Our Employee Resource Groups Women@Capgemini and OutFront support the grassroots passion of employees to drive our diversity agenda and effect change. Digital inclusion - at Capgemini we are using our skills to drive social impact initiatives focusing on helping society address the impact of the digital and automation revolution. We also provide employees with opportunities to give back to the community through charity projects and volunteer days. Environmental Sustainability - Capgemini joined the CDP's (Carbon Disclosure Project) prestigious 'A list' for its commitment to the Net-Zero economy. We are focusing on helping our clients transform towards more sustainable business models and committing to reduce our own carbon emissions (GHG) by 20% per employee by 2020 . Recognized by Ethisphere as one of the World's Most Ethical Companies for the last 8 years in a row, ethics and values are at the heart of Capgemini's corporate culture and business. Embedded in our DNA, our seven values - Honesty, Boldness, Trust, Team Spirit, Freedom, Fun and Modesty - have remained the same since company inception in 1967. To see how we bring these values to life, click here to listen to some of our employee’s stories. Come join us, bring your whole self to work, c