Full Stack Java Developer (microservices + React)

Job Title: Full Stack Java Developer (microservices + React)

Location: Concord, CA

Duration: 6 Months + Extension

Bill Rate: $70/hour

Job Type: C2C/1099 Contract

Client: To Be Discussed Later

Work Authorization: US-Citizen, H-1B, OPT-EAD, GC-EAD

Role Overview

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, highperformance web applications and RESTful services for enterprise-grade platforms, particularly within regulated or highavailability 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

We are an equal opportunity employer. All aspects of employment including the decision to hire, promote, discipline, or discharge, will be based on merit, competence, performance, and business needs. We do not discriminate on the basis of race, color, religion, marital status, age, national origin, ancestry, physical or mental disability, medical condition, pregnancy, genetic information, gender, sexual orientation, gender identity or expression, national origin, citizenship/ immigration status, veteran status, or any other status protected under federal, state, or local law.