Next.js and Kotlin Lead Full Stack Developer

Capgemini - West Chester, PA

Full-time - Mid Level

West Chester, PA

10,001+ employees

Professional, Scientific, and Technical Services

About the position

The Full Stack Developer position at Capgemini focuses on developing scalable web applications and microservices using Next.js and Kotlin. The role requires a blend of front-end and back-end development skills, ensuring seamless integration and performance optimization. The ideal candidate will work collaboratively with cross-functional teams to deliver high-quality, user-friendly applications while adhering to accessibility standards and best practices in coding.

Responsibilities

• Develop and maintain user-friendly web interfaces using React and Next.js.
• 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 and performance 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 unit and integration tests using tools like Junit, TestNG and Mockito to ensure code quality.
• Develop, customize, and maintain web applications using Sitecore CMS.
• Design and implement Sitecore components, templates, and pipelines.
• Troubleshoot, debug, and resolve issues related to Sitecore implementations.
• Develop, test, and maintain iOS applications using Swift.
• Debug and optimize application performance for speed and scalability.
• Perform code reviews and address issues identified by static code analysis tools like SonarQube.
• Design, develop, and maintain microservices using Spring Boot and related technologies.
• 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.

Requirements

• Proficiency in React/Next.js and its ecosystem (e.g., React Router, Redux, Context API).
• Strong experience with Kotlin for back-end microservice development.
• Hands-on experience in building RESTful and/or GraphQL APIs.
• Knowledge of MVVM, MVC, or other architectural patterns.
• 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.
• Experience with CI/CD tools like Jenkins or GitHub Actions.
• Understanding of Agile/Scrum methodologies.
• Strong analytical and problem-solving skills.
• Excellent communication and teamwork abilities.
• Ability to adapt and learn new technologies as required.
• Knowledge of microservices design patterns (e.g., Service Discovery, Circuit Breaker, API Gateway).
• Experience in developing microservices using Spring Boot.
• Proficiency in Java 8+ with strong knowledge of object-oriented programming concepts.

Nice-to-haves

• Strong understanding of the Swift programming language and iOS SDKs.
• Familiarity with SwiftUI, UIKit, and Foundation.
• Knowledge of Xcode and debugging tools for performance optimization.
• 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).
• Experience with Sitecore CMS for content management and personalization.
• Experience with JSS (JavaScript Services) and Sitecore Headless implementations.
• Familiarity with Solr, Lucene, or other search providers.
• Hands-on experience with Helix architecture and Sitecore template design.
• Familiarity with message brokers like RabbitMQ, Kafka, or ActiveMQ.
• Experience with RESTful API development and tools like Swagger/OpenAPI.

Benefits

• 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