Java Spring Boot Developer

Role Overview We are looking for a skilled Java Spring Boot Developer to design, develop, and maintain scalable backend systems. The ideal candidate should have strong expertise in Java, Spring Boot, and database management, along with a solid understanding of API design and system performance. Key Responsibilities • Design and develop robust, scalable backend applications using Java and Spring Boot • Build and maintain RESTful APIs with proper validation, error handling, and security • Collaborate with cross-functional teams to understand requirements and deliver solutions • Optimize application performance and troubleshoot issues • Ensure code quality through best practices, testing, and code reviews • Participate in system design and architecture discussions • Maintain proper documentation for APIs and services Required Technical Skills Java & Core Concepts • Strong knowledge of Core Java (OOP, Collections Framework, Exception Handling) • Experience with Java 8+ (Streams, Lambda Expressions, Functional Interfaces) • Multithreading & Concurrency (ExecutorService, CompletableFuture, Synchronization) • Understanding of JVM basics (Memory Model, Garbage Collection) • Knowledge of Design Patterns (Singleton, Factory, Builder, Strategy) • Good understanding of SOLID principles Spring Boot • Strong experience with Spring Boot architecture • REST API development (CRUD, pagination, filtering) • Dependency Injection (IoC) • Validation (Hibernate Validator) • Global exception handling • Spring Boot Actuator (monitoring & health checks) • Configuration management (application.properties, profiles) • AOP basics • Spring Security • JWT-based authentication • Role-Based Access Control (RBAC) Hibernate /JPA • ORM fundamentals • JpaRepository and custom queries • Entity lifecycle • Entity relationships (OneToOne, OneToMany, ManyToOne) • Lazy vs Eager fetching • Basic performance optimization Database (PostgreSQL) • Schema design and data modeling • Joins, indexes, primary & foreign keys • Transactions and ACID properties • Query optimization basics • Integration with Spring Boot (JPA/Hibernate) • Tools: pgAdmin, DBeaver • Backup and restore basics API & Web • REST API design principles • HTTP methods and status codes • API versioning and idempotency Tools & Technologies • Swagger (API documentation) • Postman (API testing) • Maven (build tool) Version Control & DevOps • Git (branching strategies, PR workflow) • GitLab (basic CI/CD understanding) Additional Skills • Microservices basics (service communication, Feign client) • Data Structures & Algorithms (basic to intermediate) • Debugging and performance optimization