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Nitish Kumar

@nitishkumar29

Senior Java backend engineer at Ernst & Young building secure microservices; improved API performance by 30% and reduced database load by 40%.

India

Message

At Ernst & Young Private Limited, I optimized REST APIs to keep response times under 20ms and improve system performance by 30%. I also reduced database load by 40% with Kafka-driven asynchronous workflows and Redis caching.

At Airtel Payments Bank, I engineered Java 17 and Spring Boot microservices for DMT transactions, sustaining 99.99% availability and achieving 99.98% reconciliation accuracy across more than 2 million monthly transactions. I also reduced duplicate payment incidents by 95% with distributed transaction management and idempotency safeguards.

Experience

Work history, roles, and key accomplishments

Current

Senior Consultant

Current

Ernst & Young Private Limited

Apr 2025 - Present (1 year 6 months)

Optimized RESTful APIs to hold response times under 20ms and improved system performance by 30%. Architected Kafka-driven asynchronous workflows and Redis caching to reduce database load by 40%.

Core Java Spring Boot PostgreSQL Microservices Kafka Redis AWS IAM Cognito ECR ECS EC2 Docker Jenkins Grafana Kibana

Software Engineer

Pelocal Fintech Private Limited

Oct 2024 - Apr 2025 (6 months)

Delivered 5 major claims and policy-management features end to end, covering the full policy lifecycle with 25+ RESTful APIs. Decreased post-release defects by 25% and raised test coverage to 80% by automating testing pipelines.

Kafka Spring Boot Core Java PostgreSQL Microservices AWS CI CD

Software Engineer

Samin Tekmindz Pvt. Ltd

Nov 2021 - Oct 2024 (2 years 11 months)

Revamped legacy systems with Spring and Hibernate, cutting downtime by 25% and increasing operational productivity by 30%. Reduced production defects by 40% by institutionalizing TDD and comprehensive unit testing.

Java Spring Framework Hibernate Test Driven Development Unit Testing Performance Optimization Root Cause Analysis