Sonu Kumar — Senior Software Engineer

I’m a backend engineer specializing in building scalable, low-latency systems in the fintech and digital banking space. Previously, as part of Paytm’s Unified Transaction History backend team, I helped design systems that efficiently process and present high-volume financial data with reliability and performance at scale. At Kotak Mahindra Bank, I work on modernizing digital banking systems, focusing on secure, scalable payment solutions and backend performance. I enjoy solving concurrency challenges and designing systems that perform reliably under heavy load. At Paytm, I worked on large-scale payment platforms used by millions of users. I engineered the backend for Paytm Playback, delivering interactive summaries of users’ payment journeys using an event-driven architecture built with Java, Spring Boot, Kafka, MySQL, and Aerospike. I also contributed to the Recurring P2P Payment Reminder system, enabling automated monthly payments for use cases like rent and salaries. I hold a degree in Information Technology from IIIT Lucknow, which laid a strong foundation in system design, multithreading, and distributed systems. Tech Stack: Java · Spring Boot · Kafka · Aerospike · MySQL · Distributed Systems · Multithreading

Stackforce AI infers this person is a Backend Engineer specializing in Fintech with expertise in scalable systems.

Location: Noida, Uttar Pradesh, India

Experience: 3 yrs 10 mos