Full Stack Java Developer (Java + React)

Position: Java React Lead Developer

Location: Concord, CA 

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, 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

Alchemy: Transforming Your Professional Vision into Reality

Since our inception in 2013, Alchemy has been dedicated to reshaping organizational performance through innovative IT services. With a vision to empower businesses seeking a transformative edge, we’ve positioned ourselves at the forefront of digitization and software modernization.

Our name reflects our mission: to transmute technology into gold-standard solutions for our esteemed clients. We proudly serve a diverse range of sectors, including IT and ITES, BFSI, Telecom and Media, Automotive, Manufacturing, Energy, Oil and Gas, Real Estate, Retail, Healthcare, and more.

With a global footprint spanning the USA, India, Europe, Canada, Singapore, Japan, and parts of Central and West Africa, we harness a unique blend of competencies, frameworks, and cutting-edge technologies. Together, we drive growth and innovation across industries, helping organizations turn their visions into reality.

Alchemy – Connecting Talent with Opportunities (Diversity, Equity and Inclusion)