At Jarurat Care Foundation, I tested HopeBot, a live WhatsApp-based support chatbot for cancer patients, across 10 modules and logged 16 issues, including critical bugs. I also fixed a navigation dead-end in the Free Stay & Food module.
I built a multithreaded Spring Boot scraping pipeline that assigns target URLs daily and appends structured results to a shared reporting sheet.
On HotelCore, I implemented pessimistic locking to prevent double-booking and built a Stripe payment flow confirmed through server-side, signature-verified webhooks. I also designed a materialized hotel-price table for faster search.
On ProNet, I architected seven independent microservices and built Kafka-based notifications, with connections modeled in Neo4j. I also built MediGoal, a blockchain-based healthcare crowdfunding platform with milestone-based fund releases and Stripe donations.
