• Designed and implemented 15+ RESTful APIs and microservices using Java and Spring Boot to support enterprise application integration platforms, improving average service response time by ~30% through query optimization and Redis caching.

• Built backend workflows for an RMA (Return Merchandise Authorization) platform including multi-user role management, configurable approval workflows, and third-party integrations with billing, shipping, and issue-tracking systems.

• Developed document ingestion and processing pipelines supporting PDF parsing, text chunking, embedding generation, and semantic vector search, enabling contextual query capabilities across large unstructured document collections.

• Integrated external AI APIs (OpenAI, Spring AI) into backend services to support LLM-based response generation, structured data extraction, and voice-driven interaction workflows.

• Designed and optimized MySQL and PostgreSQL schemas; implemented indexing strategies and query rewrites that reduced average report generation time by ~25%; enforced validation, logging, and error-handling for system reliability.

• Containerized services with Docker, maintained CI/CD pipelines via Git and GitHub Actions; participated in Agile sprints including sprint planning, code reviews, and cross-functional collaboration.

• Built and maintained ETL pipelines processing millions of daily transactional records using Python and SQL, supporting real-time reporting and business intelligence dashboards for internal analytics teams.

• Designed and optimized relational database schemas in PostgreSQL; rewrote high-cost SQL queries and applied indexing strategies, reducing average query execution time by ~35%.

• Developed automated data validation, ingestion, and reconciliation workflows, eliminating manual processing steps and reducing data error rates by over 40% across monthly reporting cycles.