Duleshwari Sahu profile photo 1 on Tal

Duleshwari Sahu

Senior Associate @NPCI | NIT RAIPUR ’22 |Java·Python·SpringBoot·Microservices·Kafka·MySQL·MCP ​

Hyderabad

8+ years of work experience

National Payments Corporation Of India (NPCI)
Apr 20251 yr 5 mosPresent

• Led a ground-up architectural revamp of UPI's core payment engine, driving a 5x throughput increase (10K → 50K TPS) to support 10B+ transactions/day, by replacing Redis with off-heap caching and rewriting performance-critical paths in Java. • Built backend MCP tools in Python for an AI-powered Early Warning System that correlates transaction failure rates and PSP downtime signals, with a RAG-based RCA engine (Weaviate + Gemma 4) for automated root-cause detection.
National Payments Corporation Of India (NPCI)
Sep 20231 yr 8 mosApr 2025

Hyderabad

• Built VPA-to-mobile mapping services (Central Mapper) in Spring Boot for high-availability payment workflows, securing data in transit with TLS and HSM-backed AES encryption. • Delivered the eRupi P2P voucher system end-to-end — designed the redemption flow and circuit-breaker fault tolerance — recognized with NPCI's Well Done Award. • Built a Contextual Payment System (card/EMI/lounge offers) using ML-based offer prediction, deployed via Docker and Kubernetes.
National Payments Corporation Of India (NPCI)
Jul 20221 yr 3 mosSep 2023

Hyderabad

• Implemented a Hyperledger Fabric-based coffee supply chain traceability system enabling fair, verifiable pricing based on origin and quality certification.
We Care The Green Movement NIT Raipur
Sep 20183 yrs 9 mosMay 2022

Raipur, Chhattisgarh, India

Duleshwari’s AI Stack

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Education

National Institute of Technology Raipur

Bachelor of Technology - BTech, Biotechnology

National Institute of Technology Raipur

20184 yrs2022
International Institute of Information Technology Hyderabad (IIITH)

PG Certification Program in Blockchain and Distributed Ledger Technologies, Blockchain

International Institute of Information Technology Hyderabad (IIITH)

20221 yr2023

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Headline

Senior Associate @NPCI | NIT RAIPUR ’22 |Java·Python·SpringBoot·Microservices·Kafka·MySQL·MCP ​

About

I'm a Backend Software Engineer at NPCI and an NIT Raipur graduate, passionate about building systems that scale reliably. I contributed to modernizing core payment infrastructure, helping increase throughput from 10K to 50K TPS, supporting 10B+ transactions daily across India's digital payments ecosystem. My work centers on Java, Spring Boot, distributed systems, Kafka, Cassandra, and KeyDB. More recently, I've been exploring the intersection of AI and fintech by building RAG pipelines, vector search applications, and LLM-powered anomaly detection for early-warning systems that help identify UPI infrastructure issues before they impact users. I enjoy sharing insights on backend engineering, distributed systems, vector databases, and agentic AI. Always open to connecting with people interested in fintech infrastructure, scalable systems, and applied AI.

Location

Hyderabad

AI stack

codex

cursor

claudecode

Work experience

Senior Associate Application Developer at National Payments Corporation Of India (NPCI), Apr 2025 - Present · 1 yr 5 mos, • Led a ground-up architectural revamp of UPI's core payment engine, driving a 5x throughput increase (10K → 50K TPS) to support 10B+ transactions/day, by replacing Redis with off-heap caching and rewriting performance-critical paths in Java. • Built backend MCP tools in Python for an AI-powered Early Warning System that correlates transaction failure rates and PSP downtime signals, with a RAG-based RCA engine (Weaviate + Gemma 4) for automated root-cause detection.

Associate UPI Design & Development at National Payments Corporation Of India (NPCI), Sep 2023 - Apr 2025 · 1 yr 8 mos, Hyderabad, • Built VPA-to-mobile mapping services (Central Mapper) in Spring Boot for high-availability payment workflows, securing data in transit with TLS and HSM-backed AES encryption. • Delivered the eRupi P2P voucher system end-to-end — designed the redemption flow and circuit-breaker fault tolerance — recognized with NPCI's Well Done Award. • Built a Contextual Payment System (card/EMI/lounge offers) using ML-based offer prediction, deployed via Docker and Kubernetes.

Graduate Engineer Trainee at National Payments Corporation Of India (NPCI), Jul 2022 - Sep 2023 · 1 yr 3 mos, Hyderabad, • Implemented a Hyperledger Fabric-based coffee supply chain traceability system enabling fair, verifiable pricing based on origin and quality certification.

Head coordinator at We Care The Green Movement NIT Raipur, Sep 2018 - May 2022 · 3 yrs 9 mos, Raipur, Chhattisgarh, India

Education

Bachelor of Technology - BTech, Biotechnology, National Institute of Technology Raipur

PG Certification Program in Blockchain and Distributed Ledger Technologies, Blockchain, International Institute of Information Technology Hyderabad (IIITH)