Title: Lead Java Developer with React & Spring Boot Microservices - Locals Only
Location: San Leandro, CA
In-person Interview Must
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 Google Cloud Platform
Exposure to Micro-frontend architecture
Banking, Financial Services, or other regulated domain experience
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