upendra rai profile photo 1 on Tal

upendra rai

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

Greater Bengaluru Area

7+ years of work experience

Mudrex
Apr 20224 yrs 5 mosPresent

Bengaluru

PagarBook
Dec 202010 mosSep 2021

Bangalore Urban, Karnataka, India

https://medium.com/@ak.helix/building-pagarbook-f2ba64292cc3
Dec 20191 yr 1 moDec 2020

Bengaluru Area, India

At PokerSangam, we are trying to build a community of/for poker players.
Dec 201811 mosOct 2019

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.
edWisor.com
Jul 20185 mosNov 2018

Bengaluru Area, India

upendra’s AI Stack

claude code
claude code
claude
claude
gemini
gemini
grok
grok
langfuse
langfuse
openai
openai

Education

bit mesra

20104 yrs2014

Join upendra and 10k+ other professionals on

Tal Boss

Tal is the app where bosses meet engineers & builders directly, without middlemen

Download Tal Boss

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

upendra rai - sde3 in Greater Bengaluru Area | Tal