React / Java Full Stack Developer

Hiring: React / Java Full Stack Developer

San Leandro, CA (Hybrid)# Contract Opportunity (W2 Preferred)# In-Person Interview Required

Work Authorization: No visa sponsorship available. Candidates must be authorized to work in the U.S. without current or future sponsorship.

We’re seeking a React / Java Full Stack Developer with strong experience in both front-end React development and Java backend development. This role will be approximately 50% React/front-end and 50% Java/backend development .

The ideal candidate will have hands-on experience building modern web applications using React.js, Java, Spring Boot, REST APIs, and JavaScript , along with strong debugging, performance optimization, and problem-solving skills.

Responsibilities

• Develop and maintain responsive UI components using React.js .
• Build and enhance backend services and APIs using Java and Spring Boot .
• Develop and integrate RESTful APIs between React front-end and Java backend services.
• Implement state management using Redux or similar frameworks .
• Troubleshoot and resolve front-end and backend application issues.
• Optimize application performance across both UI and backend services.
• Collaborate with developers, QA, and business teams to deliver scalable solutions.
• Write clean, reusable, maintainable, and well-tested code.
• Participate in code reviews, testing, debugging, and technical documentation.

Requirements

• Bachelor’s degree in Computer Science, Engineering, or a related field.
• Strong hands-on experience with React.js and Java .
• Approximately 50% front-end React and 50% Java backend development experience .
• Strong proficiency in JavaScript, HTML, and CSS .
• Strong experience with Java, Spring Boot, and REST APIs .
• Experience with Redux, Webpack, Enzyme, or similar React tools .
• Experience with testing frameworks such as Jest, Mocha, or JUnit .
• Strong understanding of backend integration, API development, and debugging.

Preferred Skills

• Experience with microservices architecture .
• Knowledge of SQL and relational databases .
• Familiarity with Git, CI/CD, and Agile development practices .
• Experience working in enterprise application environments.