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Hari Shanker User

@harishankeruser

Java backend developer at Tata Consultancy Services, building microservices and reducing API latency from 450ms to 120ms.

India
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At Tata Consultancy Services, I architected and deployed two Spring Boot and Spring Cloud microservices processing over 80,000 daily active user transactions. I integrated Redis caching into legacy endpoints, reducing database read load by 45% and average API latency from 450ms to 120ms.

I also led the phased transition of a financial ledger monolith to an event-driven microservices architecture with Apache Kafka, and wrote JUnit 5 and Mockito test suites that raised code coverage from 55% to an 88% production threshold. At Unified Mentor, I developed and maintained Java and Spring Boot backend components and assisted with REST API development and testing.

Experience

Work history, roles, and key accomplishments

UM

Backend Engineer

Unified Mentor

Jan 2025 - Sep 2025 (8 months)

Developed and maintained backend components using Java and Spring Boot. Wrote SQL queries, assisted in REST API development, and debugged issues to improve code quality.

Education

Degrees, certifications, and relevant coursework

DU

Deenbandhu Chhotu Ram University

Bachelor of Technology, Computer Science & Engineering

Grade: 8.4/10

Completed a Bachelor of Technology in Computer Science and Engineering with a CGPA of 8.4/10.

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