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Sumit Jha

@sumitjha1

Message

I build Java microservices and low-latency backend platforms.

India

Message

At Infosys, I architect backend microservices for an 8+ microservice BNPL platform, including a PlanMatrix API that reduced tenure and EMI calculation latency by 30%. I also decoupled checkout flows with Apache Kafka, ensuring message persistence and idempotency.

I've built Spring Boot services, RAG documentation systems, and algorithmic testing tools. My competitive programming background includes 2,500+ LeetCode problems solved, a Top 1% global Guardian badge, and global rank 19 in LeetCode Biweekly Contest 179.

Experience

Work history, roles, and key accomplishments

Current

Java Backend Developer

Current

Infosys Limited

Nov 2024 - Present (1 year 10 months)

Architected backend microservices for an 8+ microservice BNPL platform, engineered the PlanMatrix API for dynamic tenure and EMI calculations, and decoupled synchronous checkout flows using Apache Kafka. Refactored legacy monolith modules into containerized Spring Boot services and authored automated test suites with JUnit 5 and Mockito.

Java Spring Boot Microservices Kafka REST APIs Spring Data JPA Hibernate Docker Kubernetes JUnit5 Mockito Distributed Tracing A PM

Assistant System Engineer Trainee

Tata Consultancy Services

May 2024 - Aug 2024 (3 months)

Developed backend microservice prototypes using Java, Spring Boot, Hibernate ORM, and PostgreSQL, and collaborated in Agile sprints integrating CI/CD build checks and SonarQube static code quality analysis.

Java Spring Boot Hibernate PostgreSQL REST Agile CI CD SonarQube

Problem Setter Intern

iMocha

May 2022 - Sep 2023 (1 year 4 months)

Designed and benchmarked 30+ original algorithmic challenges across Graph Theory and DP for enterprise hiring assessments, and engineered an automated differential testing and fuzzing harness in C++ and Java.

C++Java Graph Theory Dynamic Programming Differential Testing Fuzz Testing Benchmarking