Apr 2025 – Jul 2025 · 3 mos · Noida, Uttar Pradesh, India · On-site

• Designed and implemented a REST API to capture network information, enabling debugging and root-cause analysis for sound playback issues during payment flows.
• Developed a log shipping REST API to capture application logs in .txt and .zip formats and automated log transfer using Linux cron jobs for efficient monitoring and troubleshooting.
• Developed a scalable App Store–like deployment system for card-swiping terminals, enabling targeted, zero-downtime rollout of new applications and updates. Improved deployment speed, traceability, and operational efficiency across diverse terminal types.

Jul 2024 – Apr 2025 · 9 mos

Jun 2022 – Jul 2024 · 2 yrs 1 mo

• 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.

Jan 2022 – Jun 2022 · 5 mos

• 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.

May 2021 – Jun 2021 · 1 mo