Jayant Kumar

I'm building scalable backend systems in Java and Spring Boot, including Sociofy, a distributed social networking platform built across four microservices with Neo4j, Kafka, PostgreSQL, and Docker.

For Sociofy, I modeled user relationships with Neo4j, implemented asynchronous notifications through two Kafka topics, and secured more than 10 REST endpoints with JWT authentication. I also built Cabify, a ride-booking backend with REST APIs for four ride lifecycle stages, role-based access controls, OSRM distance and fare calculations, and a normalized PostgreSQL schema.

In a social media backend, I developed user, post, comment, and like modules, introduced DTO projections that reduced API payload size by 20%, and used ConcurrentMapCache to reduce query latency from 200 ms to 5 ms.

At the IIIT Nagpur Development Club, I led backend architecture design and code reviews and mentored 100+ students in data structures, algorithms, Java, and competitive programming. I have solved 1,500+ coding problems and ranked in the top 2% globally in Codeforces Round 1037 and LeetCode Weekly Contest 475.