**Job description: Full Stack Developer Lead - React and Kotlin** **The role is hybrid .** **Preferred location- West Chester - PA , Philadelphia- PA** We are looking for a highly skilled and motivated Fullstack Developer proficient in React and Kotlin to join our dynamic team. The ideal candidate will have hands-on experience in developing scalable web applications and microservices, ensuring seamless integration between front-end and back-end components. Additionally, familiarity with Angular, Node.js, accessibility standards, and unit testing will be an added advantage to help the team build and maintain diverse application stacks. **Responsibilities** • Develop and maintain user-friendly web interfaces using React and related libraries. • Implement reusable components and ensure performance optimization of front-end applications. • Collaborate with designers to translate UI/UX wireframes into interactive and responsive web interfaces. • Manage state using tools like Redux or Context API. • Ensure cross-browser compatibility and accessibility compliance (e.g., WCAG standards). • Use tools like axe, Lighthouse, or Deque to identify and resolve accessibility issues. • Write and maintain unit tests for front-end components using Jest, React Testing Library, or similar frameworks. • Design, develop, and maintain back-end services and APIs using Kotlin. • Build and optimize microservices for scalability and reliability. • Implement RESTful or GraphQL APIs to communicate with front-end applications. • Work with relational and NoSQL databases (e.g., PostgreSQL, MySQL, MongoDB). • Use Kotlin Coroutines for efficient asynchronous programming. • Write and maintain unit tests for back-end services using frameworks like JUnit or TestNG. • Collaborate with cross-functional teams, including designers, product managers, and other developers. • Participate in code reviews, testing, and debugging to ensure high-quality deliverables. • Write clean, maintainable, and scalable code adhering to best practices. • Monitor and improve application performance. • Contribute to the architecture and technical direction of the project. • Ensure applications meet accessibility and usability standards. **Skills** **Must-Have:** • Proficiency in React and its ecosystem (e.g., React Router, Redux, Context API). • Strong experience with Kotlin for back-end development. • Hands-on experience in building RESTful and/or GraphQL APIs. • Solid understanding of HTML, CSS, and JavaScript (ES6 ). • Knowledge of asynchronous programming and state management in front-end applications. • Familiarity with relational and NoSQL databases. • Experience in unit testing for both front-end and back-end components. • Understanding of accessibility standards (WCAG, ARIA) and tools like axe and Lighthouse. • Strong analytical and problem-solving skills. • Excellent communication and teamwork abilities. • Ability to adapt and learn new technologies as required. **Good-to-Have:** • Experience with Angular for front-end development. • Familiarity with Node.js for back-end development. • Experience with cloud platforms (e.g., AWS, GCP, Azure). • Familiarity with CI/CD pipelines and version control systems like Git. • Knowledge of microservices architecture and Kubernetes/Docker for containerization. • Exposure to testing frameworks (e.g., Mocha for React; TestNG or JUnit for Kotlin). **Life at Capgemini** Capgemini supports all aspects of your well-being throughout the changing stages of your life and career. For eligible employees, we offer: + Flexible work + Healthcare including dental, vision, mental health, and well-being programs + Financial well-being programs such as 401(k) and Employee Share Ownership Plan + Paid time off and paid holidays + Paid parental leave + Family building benefits like adoption assistance, surrogacy, and cryopreservation + Social well-being benefits like subsidized back-up child/elder care and tutoring + Mentoring, coaching and learning programs + Employee Resource Groups + Disaster Relief **About Capgemini** Capgemini is a global business and technology transformation partner, helping organizations to accelerate their dual transition to a digital and sustainable world, while creating tangible impact for enterprises and society. It is a responsible and diverse group of 340,000 team members in more than 50 countries. With its strong over 55-year heritage, Capgemini is trusted by its clients to unlock the value of technology to address the entire breadth of their business needs. It delivers end-to-end services and solutions leveraging strengths from strategy and design to engineering, all fueled by its market leading capabilities in AI, cloud and data, combined with its deep industry expertise and partner ecosystem. The Group reported 2023 global revenues of €22.5 billion. Get The Future You Want | www.capgemini.com **Disclaimer** Capgemini is an Equal Opportunity Employer encouraging diversity in the workplace. All qualified applicants will receive consideration for employment without regard to race, national origin, gender identity/expression, age, religion, disability, sexual orientation, genetics, veteran status, marital status or any other characteristic protected by law. This is a general description of the Duties, Responsibilities and Qualifications required for this position. Physical, mental, sensory or environmental demands may be referenced in an attempt to communicate the manner in which this position traditionally is performed. Whenever necessary to provide individuals with disabilities an equal employment opportunity, Capgemini will consider reasonable accommodations that might involve varying job requirements and/or changing the way this job is performed, provided that such accommodations do not pose an undue hardship. Capgemini is committed to providing reasonable accommodations during our recruitment process. If you need assistance or accommodation, please reach out to your recruiting contact. Click the following link for more information on your rights as an Applicant http://www.capgemini.com/resources/equal-employment-opportunity-is-the-law Please be aware that Capgemini may capture your image (video or screenshot) during the interview process and that image may be used for verification, including during the hiring and onboarding process. Applicants for employment in the US must have valid work authorization that does not now and/or will not in the future require sponsorship of a visa for employment authorization in the US by Capgemini. **Job:** _Developer_ **Organization:** _NA APPS LOC PRACTICE_ **Title:** _Full Stack Technical Lead - React and Kotlin_ **Location:** _PA-West Chester_ **Requisition ID:** _077783_