React / Java Full Stack Developer

Hiring: React / Java Full Stack Developer

San Leandro, CA (Hybrid)# Contract Opportunity (W2/C2C 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.