CUPIST (dating service platform) / ENFPY (MBTI based dating application)- Design & Implement multi-tenancy platform by Node Js + Typescript - Layered Architecture / Pure Functional programming / TDD / Domain Driven Design - maintain and develop CUPIST / ENFPY from the scratchGLAM LIVE (M:N broadcasting/live stream service):- Design & Implement live streaming service based on FastAPI & Socket Communication- Design domain modeling, performance optimization by Cache - maintain and develop additional key features and service stability- Clean Architecture(layered architecture), TDD, RedisGLAM RANDOM CALL (1:1 random live streaming service):- Design & Implement 1:1 random call service based on FastAPI from scratch- maintain and develop matching algorithm and global serviceGLAM (Dating application service)- maintain and develop GLAM by PHP & Laravel

EPC Project Sales & Management: - Responsible for 10+ international EPCs and trading companies. - Participated in project bid process: quotation, technical & commercial evaluation, final negotiation, contract terms review. - Achieved sales KPI and managed budge through lifecycle - Monitored production, inspection, and shipment process via ERP system. - Claim management (delay, quality, or others)