Lead Java Developer with React & Spring Boot Microservices

Title: Lead Java Developer with React & Spring Boot Microservices

Location: San Leandro CA

In-person Interview Must

type of Hire: C2C

We are seeking a highly skilled Full Stack Java Developer with a strong frontend focus on React and deep expertise in Spring Boot based microservices. The ideal candidate will design develop and maintain scalable high performance web applications and RESTful services for enterprise-grade platforms particularly within regulated or high availability environments.

Key Responsibilities

Frontend (React Strong Focus)

• Design and develop modern responsive Single Page Applications (SPAs) using React (Hooks Context API Redux)
• Build reusable modular UI components using JavaScript/TypeScript HTML5 CSS3
• Integrate frontend applications with backend APIs using REST/JSON
• Optimize UI performance using lazy loading code splitting and efficient state management
• Collaborate with UX/UI designers to translate wireframes into high-quality user experiences

Backend (Java & Spring Boot Microservices)

• Design and develop Spring Boot microservices following RESTful and microservices architecture principles
• Implement business logic using Java (8/11/17) Spring MVC Spring Data JPA/Hibernate
• Build secure APIs with OAuth2 JWT and role-based access controls
• Ensure high availability scalability and fault tolerance using resilient design patterns
• Integrate with relational and NoSQL databases (PostgreSQL Oracle MySQL MongoDB)

DevOps & Engineering Practices

• Write unit and integration tests using JUnit Mockito Jest Enzyme
• Participate in CI/CD pipelines using Maven Jenkins GitHub/GitLab Azure DevOps
• Containerize and deploy services using Docker and Kubernetes (preferred)
• Work in Agile/Scrum teams contributing to design reviews code reviews and sprint ceremonies

Required Skills

• Strong proficiency in React (v16 / v18 preferred)
• Solid backend development experience with Java and Spring Boot microservices
• REST API design and integration expertise
• Experience with SQL and ORM frameworks (JPA/Hibernate)
• Hands-on experience with Git build tools and CI/CD pipelines
• Strong problem-solving and communication skills

Nice to Have

• Experience with Kafka or event-driven architectures
• Cloud experience on AWS Azure or GCP
• Exposure to Micro-frontend architecture
• Banking Financial Services or other regulated domain experience