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Dev Gupta

@devgupta2

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Backend engineer at Rapipay Fintech building Java/Kotlin UPI payment and lending systems for 5 lakh+ users.

India

Message

At Rapipay Fintech Private Limited, I build non-blocking backend services for a fintech platform serving 5 lakh+ users and 50,000+ transactions a day. I developed UPI payment flows handling around 10,000 transactions daily, including transaction initiation, mandate handling, and status callbacks.

I also engineered Equated Daily Installment systems that process around 60,000 installment records daily, and built wallet functionality with payment vendor integrations. Earlier, at Siddhast IP, I developed a Python data-ingestion pipeline and improved extraction efficiency by integrating Tesseract OCR.

Experience

Work history, roles, and key accomplishments

Current

Software Developer

Current

Rapipay Fintech Private Limited

Aug 2024 - Present (2 years 2 months)

Built non-blocking, event-driven backend services in Java/Kotlin using Spring WebFlux, Project Reactor, and Apache Kafka for a fintech platform serving 5 lakh+ users and 50,000+ transactions/day. Developed and maintained UPI payment processing flows, EDI systems, wallet functionality, and integrated external financial platforms.

Java Kotlin Spring WebFlux (Reactive)Project Reactor Kafka UPI Payments Mandates Wallets Lending (EDI)Redis MongoDB SQL Git CI CD

Software Developer Intern

Siddhast IP

May 2024 - Jul 2024 (2 months)

Developed an automated data ingestion pipeline using Python, Selenium, and BeautifulSoup to collect and process 10,000+ semi-structured articles. Improved data extraction efficiency by 60% through workflow optimization and Tesseract OCR integration.

Python Selenium BeautifulSoup Tesseract OCR Data Pipelines Workflow Optimization