Looking for a job

Pawan Kumar

@pawankumar40

Backend engineer at Simpaisa leading Pay-Ins systems for 10M+ weekly transactions across card, wallet, and remittance payments.

United Arab Emirates

Message

At Simpaisa Technologies Limited, I lead a seven-engineer backend team supporting Pay-In systems processing more than 10M transactions per week. I design Java and Spring Boot microservices for card payments, wallets, remittances, and other payment flows.

I implemented card payment lifecycles with Mastercard/MPGS and other providers, and delivered PCI DSS-aligned integrations used by major e-commerce platforms, including Temu. I also built tokenization and recurring-payment flows and automated reconciliation between provider reports and internal records.

Earlier at Simpaisa Technologies (Publishex Solutions), I led the Collection and Remittance products and built wallet and card payment platforms. At Aamalcom / Synechron, I developed and supported Java/Spring Boot backend services and enterprise integrations in production.

Experience

Work history, roles, and key accomplishments

Current

Head of Development - Pay-Ins

Current

Simpaisa Technologies Limited

Mar 2026 - Present (7 months)

Lead a 7-engineer backend team running Pay-In systems processing 10M+ transactions per week. Own delivery from requirements through production support, design Java/Spring Boot microservices, and implement PCI DSS-aligned payment integrations.

Java Spring Boot Microservices Kafka RabbitMQ Redis Resilience4j AWS Docker Jenkins PCI DSS Card Payment 3DS Tokenization Reconciliations Idempotency Distributed Tracing Blue Green Deployment

Computer Science Specialist / Consultant

Aamalcom / Synechron

Mar 2025 - Feb 2026 (11 months)

Developed and supported Java/Spring Boot backend services and enterprise integrations in production. Investigated complex production issues and contributed to technical design and code reviews.

Java Spring Boot REST APIs SQL Performance Optimization Production Troubleshooting Code Review

Lead Full Stack Developer

Simpaisa Technologies (Publishex Solutions)

Sep 2019 - Mar 2025 (5 years 6 months)

Led Collection and Remittance products end to end, built a wallet payment gateway and a card payment platform with Checkout.com and Mastercard. Implemented Kafka, RabbitMQ, and Redis for async communication and caching.