Rate Limiter Implementation: - Implemented robust rate limiter with Google Guava Rate Limiter, managing traffic of 1.5-2 million. - Ensured optimal resource utilization and maintained system stability during high traffic periods. - Achieved a 90% reduction in API error rates and a 20% improvement in response times.Data Encryption Solution: - Led the implementation of AES-256-CBC encryption solution in Java to secure PII fields. - Ensured data confidentiality and compliance with regulations across multiple databases. - Trained and mentored a team on encryption best practices.Disaster Recovery : - Led disaster recovery efforts for a team overseeing 15 Java applications, ensuring business continuity and minimizing downtime. - Developed and implemented comprehensive disaster recovery plans, conducting regular drills and tests to optimize response times. - Collaborated with cross-functional teams to mitigate risks and ensure the resilience of critical systems.Fault-Tolerant Data Processing System: - Architected and developed a fault-tolerant system using Spring Batch to process and aggregate large-scale consumer data. - Processed 4-5 files with over 10 million records, delivering output in just 8 minutes. - Achieved an 87% performance improvement through strategic optimizations.HTML to PDF Conversion System: - Implemented and optimized an HTML to PDF conversion system, handling 300k-400k conversions daily. - Utilized Java and openhtmltopdf for efficient conversion, reducing processing time by 50%. - Resulted in significant cost savings and improved customer satisfaction.Optimized REST Endpoints: - Enhanced accessibility and responsiveness of REST endpoints for real-time trading data. - Leveraged indexing, sharding, and SQL database proficiency for performance optimization.

Batch Job Optimization : - Optimized batch job latency, slashing processing time from 15-20 hours to a mere 8-10 minutes, marking an exceptional improvement of over 99%. - Empowered customers to access real-time statements, drastically enhancing their experience and operational efficiency. - Employed innovative techniques and strategic optimizations to achieve remarkable performance enhancement. - Contributed significantly to the overall success of the organization through this achievement.Complex System Development with AWS: - Contributed to the development of a complex system leveraging multiple AWS services including S3, Lambda, and API Gateway. - Implemented REST APIs, MySQL, and microservices architecture. - Orchestrated handling of 15-20 files, facilitating seamless communication across teams.