About

Every payment I've touched has had to be right exactly once. At Juspay, I build the backend systems behind that: transaction services, payment SDKs, and the data infrastructure that watches it all. My Kafka and ClickHouse pipelines power real-time analytics over 50M+ transactions a day, across up to 10,000 dimensions, with strict per-merchant data isolation. On top of them, I designed a query DSL and a custom binary storage format that cut reporting infrastructure cost by 30–40%. I led backend development for Visa Pay and integrated Mastercard's payment SDK, so wallet apps can offer card tokenization and tap-to-pay through one SDK. I joined Juspay as an intern in 2021 and have since worked on nearly every layer of a payment. That spans card-present protocol on POS terminals, PIN-block decryption in Python, Go and Node.js, and the distributed services and analytics behind them. So when a transaction fails in production, I can usually trace it from the card tap to the dashboard. Today I'm a Senior Software Engineer leading a team of 5. I'm building a gRPC transaction service for POS terminals and securing its service-to-service traffic on Kubernetes with Istio, mTLS and SPIFFE workload identity. The problems I want to spend more time on: idempotent transaction design, correctness under retries and failure, and what breaks first when data volume doubles. If your team is scaling a transaction or data pipeline, message me your daily volume and I'll tell you where I'd expect it to break first.

Location

Greater Delhi Area

AI stack

claude code

claude

cursor

gemini

hermes agent

ollama

Work experience

Senior Software Engineer at JUSPAY, Sep 2026 - Present · 2 mos, - Designed and built a gRPC payment transaction service for POS terminals end-to-end, owning the system design, API contract and transaction lifecycle. It's live with its first merchant and load-tested for multi-merchant rollout, with service-to-service traffic secured on Kubernetes using Istio/Envoy mTLS, SPIFFE workload identity and per-message ECDSA signing. - Led the Visa Middle East card-acceptance initiative as Juspay's technical partner, building an L3 payment application that implements the complete card-present protocol (Java/Kotlin on Android POS, C++ on RTOS). - Led and mentored a team of 5 engineers through technical design and code reviews, shipping time-bound payment projects on schedule.

Software Engineer at JUSPAY, Jun 2022 - Sep 2026 · 4 yrs 4 mos, - Built and operated resilient, real-time data pipelines on Kafka and ClickHouse, ingesting ~600 GB/day and powering analytics over 50M+ daily transactions across up to 10,000 dimensions with strict per-merchant data isolation for 500+ merchants. Kept them running through major version upgrades and live OOM and replication incidents. - Migrated report generation off BigQuery onto a custom query DSL over ClickHouse and a binary storage format for log partitioning, cutting report-generation infrastructure cost by 30–40% through schema/data modeling and query performance optimization. - Led backend development for Visa Pay and integrated Mastercard's payment SDK, enabling wallet providers to offer card tokenization and tap-to-pay through a single Juspay SDK.

Software Engineer Intern at JUSPAY, Jul 2021 - Jul 2022 · 1 yr 1 mo, Bengaluru, Built the A/B testing framework that became the mandatory release gate for every microservice at Juspay, gating 50+ releases a week by comparing transaction success rates between old and new versions across multiple dimensions on 50M+ daily transactions, so no release could ship a success-rate regression to merchants like Amazon and Google. It's still the release gate today, five years on. Converted to a full-time offer after 12 months.

Education

Bachelor of Technology, Computational Science, ABESIT