I've built and maintained core bKash backend services processing 2.5M+ transactions daily, working through Exabyting on Customer App MW, FinRec, and PIN Reset services using Java, Spring Boot, DynamoDB, and Kafka.
I led a zero-downtime Spring Boot 2→3 migration for PIN Reset and built reactive Kafka integrations to improve resilience across core banking microservices. I also reduced build time by about 42% and created developer tooling that cut log-check time by roughly 15 minutes per check.
Across SELISE and Exabyting, I've extended ThingsBoard into a multi-tenant IoT platform handling millions of data points and delivered Laravel applications for healthcare, accounting, RBAC, and government projects. I contribute to open source through ThingsBoard and maintain packages including laravel-gitstamp and jmbus.
