Lead Java Developer

About the Job you are considering: Join Capgemini’s Cloud & Custom Applications (C&CA) practice and help shape the future of enterprise engineering within the Financial Services Business Unit. As a Senior Java Developer, you will design and deliver resilient, scalable backend solutions that enable business-critical outcomes for our clients. Working as a trusted, AI-fluent advisor, you will contribute across the full software lifecycle, collaborating with multidisciplinary teams to build high-quality platforms, drive continuous improvement, and support a future-ready engineering culture. This is an opportunity to consult with purpose, continuously evolve, and architect tomorrow while delivering measurable value in complex and fast-paced environments. Hybrid working: The places that you work from day to day will vary according to your role, your needs, and those of the business; it will be a blend of Company offices, client sites, and your home; noting that you will be unable to work at home 100% of the time. Key Responsibilities Design and deliver scalable backend solutions that support business-critical client outcomes.Build resilient, event-driven services capable of handling high volumes of data and transactions reliably.Own the delivery lifecycle from design and development through testing, deployment, and production support.Ensure solutions are secure, maintainable, observable, and aligned with engineering best practices.Drive quality through automated testing, continuous improvement, and engineering excellence.Troubleshoot and resolve complex issues within distributed environments to maintain service reliability.Collaborate with engineering, product, platform, and security stakeholders to achieve successful delivery outcomes.Promote reusable patterns, technical standards, and effective knowledge sharing across teams.Leverage AI-assisted engineering practices responsibly to improve productivity while maintaining governance and quality standards.Contribute to building a future-ready workforce through mentoring, collaboration, and continuous learning. Must-Have Skills Strong experience delivering enterprise-scale backend applications and microservices.Deep understanding of event-driven architecture, event processing patterns, and state management concepts.Proven expertise in designing scalable, resilient, and high-performance distributed systems.Strong knowledge of API design principles and secure service-to-service integration practices.Experience applying Test-Driven Development (TDD) and automated quality engineering approaches.Ability to diagnose, troubleshoot, and support complex production environments.Experience working across the full software development lifecycle within agile delivery teams.Strong stakeholder communication and collaboration skills with the ability to influence technical decisions.Handson experience with AI assisted development tools such as Claude Code GitHub Copilot or equivalent platformsCommitment to continuous improvement, engineering excellence, and knowledge sharing.Java, Spring Boot, and modern microservices frameworks.Apache Kafka, event streaming platforms, and event sourcing implementations.gRPC and high-throughput service design approaches.Docker, containerization technologies, and CI/CD toolchains including GitLab.JUnit, Maven/Gradle, and mocking frameworks.OpenTelemetry, Prometheus, Grafana, CloudWatch, Observe, or similar observability platforms.Identity and Access Management (IAM), authorization, or security-focused engineering experience.Experience within Banking, Financial Services, or other regulated industry environments. "We are a Disability Confident Employer: Capgemini is proud to be a Disability Confident Employer (Level 2) under the UK Government’s Disability Confident scheme. As part of our commitment to inclusive recruitment, we will offer an interview to all candidates who: Declare they have a disability, andMeet the minimum essential criteria for the role.Please opt in during the application process. Make It Real (what does it mean for you): You’d be joining an accredited Great Place to work for Wellbeing in 2024. Employee wellbeing is vitally important to us as an organisation. We see a healthy and happy workforce a critical component for us to achieve our organisational ambitions.To help support wellbeing we have trained ‘Mental Health Champions’ across each of our business areas, and we have invested in wellbeing apps such as Thrive and Peppy.You will be empowered to explore, innovate, and progress. You will benefit from Capgemini’s ‘learning for life’ mindset, meaning you will have countless training and development opportunities from thinktanks to hackathons, and access to 250,000 courses with numerous external certifications from AWS, Microsoft, Harvard ManageMentor, Cybersecurity qualifications and much more.You will be joining one of the World’s Most Ethical Companies®, as recognised by Ethisphere® for 13 consecutive years. We live our values by making ethical business choices every day. Working ethically is at the centre of our culture at Capgemini, meaning you will be helping to create a future we can all be proud of. Why you should consider Capgemini: Growing clients’ businesses while building a more sustainable, more inclusive future is a tough ask. When you join Capgemini, you’ll join a thriving company and become part of a collective of free-thinkers, entrepreneurs and industry experts. We find new ways technology can help us reimagine what’s possible. It’s why, together, we seek out opportunities that will transform the world’s leading businesses, and it’s how you’ll gain the experiences and connections you need to shape your future. By learning from each other every day, sharing knowledge, and always pushing yourself to do better, you’ll build the skills you want. You’ll use your skills to help our clients leverage technology to innovate and grow their business. So, it might not always be easy, but making the world a better place rarely is. About Capgemini: Capgemini is an AI-powered global business and technology transformation partner, delivering tangible business value. We imagine the future of organisations 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 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 2024 global revenues of €22.1 billion. Make it real | www.capgemini.com