Looking for a job

Harsh Rana

@harshrana1

Message

I build payment, reconciliation, and messaging systems for high-volume POS platforms.

India

Message

What I'm looking for

I'm looking to build reliable backend systems, especially payment, reconciliation, messaging, and event-driven platforms where I can own integrations end to end and improve performance at scale.

At DotPe, I build payment, reconciliation, and messaging systems for Rista, a POS platform serving 5,000+ merchant branches.

I built an Apache Kafka-based End-of-Day reconciliation pipeline processing 50K events daily, replacing manual merchant refund settlement with automated daily settlement. I also own cancellation and refund flows for PhonePe SQR, Swiggy Dineout, and District, now live across 100+ merchants.

I rebuilt the WhatsApp Business messaging pipeline to handle 5M messages a day and reduce charges for undelivered messages. I’ve also designed configurable business attributes in Go and Node.js, cutting merchant onboarding configuration time by 40%.

I work across Go, Node.js, Kafka, MongoDB, Redis, MySQL, and REST APIs. Outside work, I built a Go URL shortener benchmarked below 15ms P99 at 1,000 requests per second and have solved 500+ LeetCode problems.

Experience

Work history, roles, and key accomplishments

Current

Software Development Engineer

Current

DotPe Pvt Ltd

Sep 2024 - Present (2 years)

Built event-driven End-of-Day sales reconciliation pipeline on Apache Kafka processing 50K events/day, replacing hand-calculated merchant refund settlement with automated daily settlement. Owned cancellation and refund path for PhonePe SQR, Swiggy Dineout and District payment integrations in Rista POS, covering order state transitions and refund initiation against provider APIs; live across 100+ m