Amit Singh

I’m a Backend Software Engineer with 2+ years of experience designing and building scalable microservices, REST APIs, and event-driven distributed systems. I focus on performance, reliability, and production-ready engineering, backed by measurable impact.

At PayNways (Jul 2024 – Present), I designed and developed Java/Spring Boot microservices for fintech transaction workflows—handling 100,000+ transactions/day at 99.9% uptime. I built secure REST APIs and improved partner integration efficiency by 30% through cleaner service contracts.

I’ve strengthened system performance by optimizing PostgreSQL queries and indexing, cutting API latency from 450ms to 270ms (40%). I also implemented a Redis caching layer and automated CI/CD pipelines—lowering database load by 40% and reducing deployment time by 25%.

I enjoy turning complex requirements into scalable solutions, from a high-throughput URL shortener (10,000+ requests/second, sub-10ms latency) to event-driven payment processing with Apache Kafka and Redis. I bring a strong core in data structures, algorithms, and system design, with 500+ problems solved on competitive coding platforms.