Design , develop, and maintain scalable Java applications and backend services. Write efficient and maintainable code following industry best practices. Design and implement complex SQL queries, stored procedures, and performance tuning for both MSSQL and Oracle. Collaborate with front-end developers, QA engineers, and business analysts to deliver high-quality solutions. Analyze application requirements and provide technical design and implementation solutions. Ensure data integrity and security across systems. Troubleshoot and resolve production issues related to backend services and databases. Participate in code reviews, testing, and documentation.