Senior Java Full Stack Engineer - Spring Boot & Spring Batch

We are looking for an experienced Senior Java Full Stack Developer with strong hands-on expertise in Java, Spring Boot, Spring Batch, and QA Automation. The ideal candidate will design, develop, and support scalable enterprise applications, build high-performance microservices, implement robust batch processing solutions, and drive automation and quality engineering practices.

Key Responsibilities

• Design, develop, and maintain high-throughput Java/Spring Boot microservices for enterprise data processing and integration workflows.
• Lead the development of Spring Batch applications for end-to-end data pipelines, including ingestion, validation, transformation, persistence, reconciliation, and status tracking.
• Build secure and scalable REST API integrations with internal and external systems using Spring technologies.
• Implement OAuth2 client credentials authentication, API retry mechanisms, timeout strategies, and observability-focused logging.
• Develop file-to-database and API-to-database synchronization processes with strong data accuracy and traceability.
• Implement batch processing best practices including restartability, idempotency, chunk processing, partitioning, and error recovery.
• Design and optimize database workflows using PostgreSQL, including schema-aware CRUD operations, transaction management, indexing, and query optimization.
• Establish automated quality gates using BDD and integration testing frameworks, including Cucumber and JUnit.
• Perform API validation, database testing, and edge-case automation to ensure application reliability.
• Drive production readiness through monitoring, health checks, exception handling, diagnostics, alerting, and operational support practices.
• Collaborate with cross-functional teams including QA, DevOps, Product, and Data teams to deliver reliable software solutions.
• Mentor developers through code reviews, architecture discussions, and engineering best practices.

Required Technical Skills

• 8+ years of hands-on experience in Java development with strong knowledge of OOP principles, collections, concurrency concepts, and clean coding practices.
• Strong expertise in Spring Boot and Spring Batch, including:
  • Job and step configuration
  • Item readers, processors, and writers
  • Chunk-based processing
  • Partitioning
  • Job restart and recovery strategies
• Experience developing and consuming RESTful APIs using Spring MVC/WebFlux with secure service-to-service communication.
• Strong knowledge of PostgreSQL and SQL, including:
  • Complex queries
  • Database transactions
  • Indexing strategies
  • Performance tuning
  • Large-volume ETL/data processing workloads
• Hands-on experience with Spring Data JPA and JDBC Template for ORM-based and query-driven data access.
• Experience with QA automation frameworks including:
  • Cucumber
  • JUnit
  • API automation
  • Database validation testing
• Experience with build and deployment tools such as:
  • Maven
  • Docker
  • CI/CD pipelines