Full-Stack Software Engineer (Java+React)

We are seeking a Full-Stack Java/React Engineer to join an engineering pod delivering modern digital payment and transaction-processing solutions for a global leader in digital payments, card issuance, and financial transaction processing. In this role, you will contribute across the full application lifecycle-architecting resilient microservices and responsive micro frontend interfaces, integrating mission-critical RESTful APIs, and implementing robust enterprise security protocols that process high-volume, secure financial operations at global scale.

Responsibilities

• Full-Stack Feature Delivery: Design, implement, and maintain scalable full-stack features using Java, Spring Boot, React, and TypeScript across distributed microservices and micro frontends.
• API & System Integration: Architect and integrate robust RESTful APIs with OpenAPI/Swagger specifications, ensuring high-throughput data exchange and backward compatibility across payment systems.
• Data Persistence & Modeling: Design relational schemas, write optimized SQL queries, and implement reliable persistence layers using Spring Data JPA and Hibernate for PostgreSQL or MySQL.
• Security & Authentication Implementation: Enforce stringent fintech-grade authentication, authorization, and data-protection mechanisms using Spring Security, OAuth 2.0, and JWT.
• Automated Testing & Quality Gates: Write comprehensive unit and integration tests across the stack (Jest, React Testing Library, JUnit, Mockito, Spring Boot Test) to maintain strict code quality standards.
• CI/CD & Containerization: Package applications into Docker containers and configure automated CI/CD pipelines via GitHub Actions or Jenkins within an Agile/Scrum workflow.

Min requirements

• Frontend Engineering: Strong hands-on experience with JavaScript (ES6+), TypeScript, HTML5, CSS3, React, and state management via Redux / Redux Toolkit.
• Backend Development: Solid commercial background in Java (8+ / 11+ / 17+), Spring Boot, and the core Spring Framework ecosystem.
• Data Access & Databases: Hands-on experience with relational databases (PostgreSQL or MySQL), SQL optimization, Spring Data JPA, and Hibernate.
• API Standards & Architecture: Proven track record of developing and consuming REST APIs, handling JSON serialization, and using OpenAPI/Swagger within a microservices architecture.
• Application Security: Working knowledge of Spring Security, OAuth 2.0, JWT, and role-based access control.
• Automated Testing: Practical experience writing tests with Jest and React Testing Library on the frontend, alongside JUnit, Mockito, and Spring Boot Test on the backend.
• DevOps & Version Control: Proficiency with Git, GitHub, build tools (Maven or Gradle, npm), Docker containerization, and CI/CD pipelines (GitHub Actions or Jenkins).
• Agile Delivery: Experience working autonomously within a collaborative Scrum/Agile delivery framework.

Would be a plus

• Next.js & Advanced UI Frameworks: Familiarity with Next.js (SSR/SSG), Material UI, or Tailwind CSS for modular UI components.
• Micro Frontends Architecture: Experience designing, decomposing, or maintaining micro frontend architectures at enterprise scale.
• Fintech & Payment Systems: Background in payment processing, financial transactions, PCI DSS compliance, or transactional ledger systems.
• Performance Tuning: Experience profiling and optimizing full-stack application performance, database query latency, and web vitals.

We offer

• Opportunity to work on bleeding-edge projects
• Work with a highly motivated and dedicated team
• Competitive salary
• Flexible schedule
• Benefits package - medical insurance, sports
• Corporate social events
• Professional development opportunities
• Well-equipped office

About us

Grid Dynamics (NASDAQ: GDYN) is a leading provider of technology consulting, platform and product engineering, AI, and advanced analytics services. Fusing technical vision with business acumen, we solve the most pressing technical challenges and enable positive business outcomes for enterprise companies undergoing business transformation. A key differentiator for Grid Dynamics is our 8 years of experience and leadership in enterprise AI, supported by profound expertise and ongoing investment in data, analytics, cloud & DevOps, application modernization and customer experience. Founded in 2006, Grid Dynamics is headquartered in Silicon Valley with offices across the Americas, Europe, and India.