---
title: "upendra rai - sde3 in Greater Bengaluru Area | Tal"
description: "Meet upendra rai, Backend Engineer · Go · Python · Distributed Systems · Fintech & Crypto | Ex-Mudrex, Goibibo | Open to Work based in Greater Bengaluru Area. AI stack includes claude code, claude, and gemini."
image: "https://tal.club/meet/upendra-rai/share-image"
---

# upendra rai on Tal

## Headline

Backend Engineer · Go · Python · Distributed Systems · Fintech & Crypto \| Ex\-Mudrex, Goibibo \| Open to Work

## About

Backend engineer with 8\+ years building production systems across fintech, crypto, and consumer tech\. I've spent most of my career owning backend systems end\-to\-end — from Goibibo's Kafka\-driven wallet event pipeline serving Flights, Hotels, and Buses at Tier\-1 consumer scale, to Mudrex's crypto trading infrastructure where I designed and built the Bybit Futures integration solo, a conditional order engine, and an A/B experimentation platform — all on Go and Python, backed by Kafka, Redis, PostgreSQL, and AWS\. At Mudrex \(SDE\-3\), I authored technical design docs that shaped architecture decisions across the team and mentored 3–4 engineers into independent ownership of features\. Before that, I co\-led a payroll engine rewrite at PagarBook and built core fintech infrastructure at Kaarva — KYC, cashout flows, and onboarding pipelines\. I write design docs before I write code\. I care about systems that are honest about their failure modes\. And I think the best backend work is invisible — it just works\. Currently exploring applied AI engineering — building a Q&A evaluation framework and a code review agent using OpenAI and Anthropic APIs, while learning LangChain and LangGraph\. Open to Staff Engineer and Principal Engineer roles globally — remote\-first or hybrid\. Strong preference for fintech, crypto, or AI\-adjacent backend systems\. Core stack: Go · Python \(Flask, Django\) · Apache Kafka · Redis · PostgreSQL · TimescaleDB · AWS · Grafana · Prometheus · Elasticsearch

## Location

Greater Bengaluru Area

## AI stack

claude code

claude

gemini

grok

langfuse

openai

## Work experience

sde3 at Mudrex, Apr 2022 \- Present · 4 yrs 5 mos, Bengaluru

Senior Software Development Engineer at PagarBook, Dec 2020 \- Sep 2021 · 10 mos, Bangalore Urban, Karnataka, India, https://medium\.com/@ak\.helix/building\-pagarbook\-f2ba64292cc3

Full Stack Engineer at PokerSangam, Dec 2019 \- Dec 2020 · 1 yr 1 mo, Bengaluru Area, India, At PokerSangam, we are trying to build a community of/for poker players\.

Full\-stack Developer at Kaarva, Dec 2018 \- Oct 2019 · 11 mos, Bangalore, Kaarva is a new age tech based finance company which aims to create full stack flexible & customised financial services for the underserved, unserved & badly served customers\. It has customers across 10\+ cities in India and the vision is to create India's first flexible digital bank for the masses\.

Data Scientist Trainee at edWisor\.com, Jul 2018 \- Nov 2018 · 5 mos, Bengaluru Area, India

## Education

bit mesra

[View the original profile](https://tal.club/meet/upendra-rai)

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