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Prashant Chauhan

⚡ SDE @ Razorpay | Banking Microservices & AI/LLM Observability | Ex-Paytm Payments Bank

Greater Bengaluru Area

7+ years of work experience

Razorpay
Nov 20241 yr 10 mosPresent

Bengaluru, Karnataka, India

Backend engineer working where fintech meets serious scale — owning systems end-to-end from design to on-call. • Own Razorpay's self-hosted LLM observability & evaluation platform (Langfuse + ClickHouse) — POC → production on AWS EKS (Terraform, Helm/Spinnaker, Grafana), with per-team cost attribution and enabling teams to run LLM-as-a-Judge evals and CI quality gates, at a fraction of the cost of Langfuse Enterprise. • Built an internal PII redaction SDK across 5 languages (Go, Python, TypeScript, Ruby, Java) using Microsoft Presidio — defense-in-depth for LLM traces. • Led TDS for Business Banking payouts end-to-end across 8 services (tax-compliance, payouts, CFA, API, authz) + Edge/Kong onboarding. • Owned the Account Statements service — 12–20 lakh statements/day across RBL, Yes Bank, IDFC & Axis at 99.9% uptime — and led its monolith → microservice decomposition: migrated 37M+ records with zero downtime, cut over 100% of statement-fetch traffic, segregated read/write DBs. • Designed shared Elasticsearch infrastructure reused across multiple pods (lower infra cost), cutting statement fetch ~15s → 200–500ms; overhauled reconciliation across RBL/Yes Bank/IDFC, raising recon rate 20% → 90%. • Drove reliability & standards — MSK Kafka migration, Go 1.24, 95%+ test coverage, P0/P1 response — and mentored engineers via detailed PR reviews.
Paytm Payments Bank
Jul 20222 yrs 5 mosNov 2024

Remote

• Built the Order Management Service (~40% faster order processing) powering AEPS, NCMC, Fixed Deposits, FASTag, Core Banking, debit/prepaid cards, utility payments & merchant payout — serving millions daily. • Delivered a dynamic-pricing feature (time-to-market −50%) and an API layer automating back-office ops (deployment changes −50%). • Secured inter-service comms with RSA, AES-GCM, JWT (security incidents −20%) and cut order-processing failure rate −25%. • Authored system-architecture & workflow docs, cutting new-engineer onboarding ~80%.
Paytm Payments Bank
Jan 20227 mosJul 2022

Noida, Uttar Pradesh, India

Backend internship on the bank's merchant-onboarding stack — converted to full-time at the end of the program. • Built a merchant catalogue and onboarding microservice that streamlined how new merchants uploaded and managed product information. • Designed scalable Java/Spring Boot services backed by MySQL, exposing clean REST APIs consumed by internal back-office tools. • Wrote unit tests and authored handover documentation that fed into the production rollout.
HR industry
Aug 20213 mosOct 2021

Pune Division, Maharashtra, India

Embedded-systems / IoT R&D internship — built smart-lighting control firmware and supported the company's internal network reliability. • Co-developed a retrofit remote-control & automation solution for LED drivers, enabling centralized control and live monitoring of lighting systems. • Built driver-health, control and power-consumption analytics using sensor data, AWS IoT, and standard IoT communication protocols. • Integrated the solution into existing infrastructure with cross-functional teams; helped deliver a client-facing UI for monitoring. • Audited and improved the office WiFi network — heat-mapping coverage, scripting analysis, and implementing fixes that improved reliability and throughput.
GeeksforGeeks
May 20191 yr 2 mosJun 2020

Bengaluru, Karnataka, India

Digit College Ambassador Program
Apr 20192 yrs 1 moApr 2021

Noida, Uttar Pradesh, India

Founded and ran a college-wide tech community as Digit Magazine's campus representative. • Built a tech-enthusiast community from the ground up, growing it across the campus during my undergrad. • Curated and shared weekly industry updates, ran tech-support clinics, and brought in industry mentors for consultation sessions. • Created a recurring forum for knowledge-sharing that fed peers into projects, internships and tech decisions.

Prashant’s AI Stack

anthropic apis
anthropic apis
claude code
claude code
claude
claude
codex
codex
cursor
cursor
langfuse
langfuse

Education

Ramaiah Institute Of Technology

Bachelor of Engineering - BE, Electronics and Telecommunication Engineering

Ramaiah Institute Of Technology

20184 yrs2022
kendriya vidyalaya

12, Computer Science

kendriya vidyalaya

20153 yrs2018

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Headline

⚡ SDE @ Razorpay | Banking Microservices & AI/LLM Observability | Ex-Paytm Payments Bank

About

Backend engineer at Razorpay, working where fintech meets serious scale. Over the last few years I've pulled critical flows out of a PHP monolith into Go microservices — migrating 37M+ records with zero downtime, segregating read/write databases, and onboarding partner banks (IDFC, Yes Bank) with Elasticsearch-backed search that cut statement-fetch latency from ~15s to under 500ms. I led the end-to-end backend for TDS on Business Banking payouts across 8 services, and I now own Razorpay's self-hosted LLM observability platform (Langfuse + ClickHouse on AWS) — live in production, with Grafana dashboards, per-team cost attribution, and a 5-language PII-redaction SDK that keeps AI traces compliant. I gravitate to problems that span services, data and infrastructure at once — migrations, reconciliations, and platform work where correctness and reliability are non-negotiable. Before Razorpay I built core fintech systems (AEPS, NCMC, Fixed Deposits, FASTag, Core Banking) at Paytm Payments Bank.

Location

Greater Bengaluru Area

AI stack

anthropic apis

claude code

claude

codex

cursor

langfuse

Work experience

Software Development Engineer at Razorpay, Nov 2024 - Present · 1 yr 10 mos, Bengaluru, Karnataka, India, Backend engineer working where fintech meets serious scale — owning systems end-to-end from design to on-call. • Own Razorpay's self-hosted LLM observability & evaluation platform (Langfuse + ClickHouse) — POC → production on AWS EKS (Terraform, Helm/Spinnaker, Grafana), with per-team cost attribution and enabling teams to run LLM-as-a-Judge evals and CI quality gates, at a fraction of the cost of Langfuse Enterprise. • Built an internal PII redaction SDK across 5 languages (Go, Python, TypeScript, Ruby, Java) using Microsoft Presidio — defense-in-depth for LLM traces. • Led TDS for Business Banking payouts end-to-end across 8 services (tax-compliance, payouts, CFA, API, authz) + Edge/Kong onboarding. • Owned the Account Statements service — 12–20 lakh statements/day across RBL, Yes Bank, IDFC & Axis at 99.9% uptime — and led its monolith → microservice decomposition: migrated 37M+ records with zero downtime, cut over 100% of statement-fetch traffic, segregated read/write DBs. • Designed shared Elasticsearch infrastructure reused across multiple pods (lower infra cost), cutting statement fetch ~15s → 200–500ms; overhauled reconciliation across RBL/Yes Bank/IDFC, raising recon rate 20% → 90%. • Drove reliability & standards — MSK Kafka migration, Go 1.24, 95%+ test coverage, P0/P1 response — and mentored engineers via detailed PR reviews.

Software Engineer at Paytm Payments Bank, Jul 2022 - Nov 2024 · 2 yrs 5 mos, Remote, • Built the Order Management Service (~40% faster order processing) powering AEPS, NCMC, Fixed Deposits, FASTag, Core Banking, debit/prepaid cards, utility payments & merchant payout — serving millions daily. • Delivered a dynamic-pricing feature (time-to-market −50%) and an API layer automating back-office ops (deployment changes −50%). • Secured inter-service comms with RSA, AES-GCM, JWT (security incidents −20%) and cut order-processing failure rate −25%. • Authored system-architecture & workflow docs, cutting new-engineer onboarding ~80%.

Software Engineer Intern at Paytm Payments Bank, Jan 2022 - Jul 2022 · 7 mos, Noida, Uttar Pradesh, India, Backend internship on the bank's merchant-onboarding stack — converted to full-time at the end of the program. • Built a merchant catalogue and onboarding microservice that streamlined how new merchants uploaded and managed product information. • Designed scalable Java/Spring Boot services backed by MySQL, exposing clean REST APIs consumed by internal back-office tools. • Wrote unit tests and authored handover documentation that fed into the production rollout.

R&D Engineer (Intern) at HR industry, Aug 2021 - Oct 2021 · 3 mos, Pune Division, Maharashtra, India, Embedded-systems / IoT R&D internship — built smart-lighting control firmware and supported the company's internal network reliability. • Co-developed a retrofit remote-control & automation solution for LED drivers, enabling centralized control and live monitoring of lighting systems. • Built driver-health, control and power-consumption analytics using sensor data, AWS IoT, and standard IoT communication protocols. • Integrated the solution into existing infrastructure with cross-functional teams; helped deliver a client-facing UI for monitoring. • Audited and improved the office WiFi network — heat-mapping coverage, scripting analysis, and implementing fixes that improved reliability and throughput.

College Ambassador at GeeksforGeeks, May 2019 - Jun 2020 · 1 yr 2 mos, Bengaluru, Karnataka, India

College Ambassador at Digit College Ambassador Program, Apr 2019 - Apr 2021 · 2 yrs 1 mo, Noida, Uttar Pradesh, India, Founded and ran a college-wide tech community as Digit Magazine's campus representative. • Built a tech-enthusiast community from the ground up, growing it across the campus during my undergrad. • Curated and shared weekly industry updates, ran tech-support clinics, and brought in industry mentors for consultation sessions. • Created a recurring forum for knowledge-sharing that fed peers into projects, internships and tech decisions.

Education

Bachelor of Engineering - BE, Electronics and Telecommunication Engineering, Ramaiah Institute Of Technology

12, Computer Science, kendriya vidyalaya