About
Java Spring Boot Developer specializing in high-throughput backend systems for warehouse and logistics platforms. Experienced in building and optimizing PostgreSQL-backed microservices, reducing API response times by up to 60%, and supporting systems processing 6M+ transactions per day in production.
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Work Experience
Java Spring Boot Developer
RedMind Technologies
11-2023 - Present
Designed and developed scalable REST APIs using Java Spring Boot to support logistics, inventory, inbound, outbound, and reports workflows in a production WMS environment. Modeled and optimized entity relationships, and JPQL queries, improving data retrieval performance by ~30% and enabling efficient reporting via database views. Optimized API performance through query tuning and service-level improvements, reducing average response time by ~60% under production load. Applied and extended a centralized exception-handling framework in Spring Boot, reducing manual reprocessing by ~50% and improving system reliability. Solved a concurrency-critical UID generation problem using a database-level atomic UPSERT with composite unique indexing, ensuring 100% uniqueness and automatic period-based resets. Migrated complex dynamic queries from raw SQL to QueryDSL, improving readability and maintainability and reducing ongoing development and modification effort by ~40%. Built and maintained PostgreSQL views for inventory and logistics reports, simplifying data access for operational and analytical use cases. Conducted load and stress testing using Apache JMeter to identify performance bottlenecks and validate system stability under high-traffic scenarios. Built a high-scale logistics system with capacity planning for 400+ customers, 8300+ active users and 2M+ daily transactions as part of a phased production rollout. Diagnosed and resolved production issues, improving system uptime and reducing the frequency of critical incidents in the logistics platform. Enforced clean code and design principles (SOLID, modular service interfaces), improving module stability. Led code reviews, PR approvals, and mentoring for junior engineers, ensuring adherence to engineering best practices and code quality standards. Automated and maintained API documentation using Swagger, enabling faster onboarding and easier integration for internal development teams. Prepared and executed production-ready SQL migration scripts for table, column, and view changes, ensuring safe and consistent deployments. Actively participated in Agile ceremonies (stand-ups, sprint planning, retrospectives), contributing to predictable delivery and continuous team improvement.
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