Khoo Zi Yi | Java Engineer

About Me

Building the future of cross-border payments

Java Engineer at Ant International Group (Alipay+) with proven expertise in high-traffic cross-border payment marketing systems. Successfully built and maintained platforms serving 15M+ users with mission-critical reliability. Recently promoted to Level 10 (P5) for consistently high performance. Currently pioneering AI-augmented development workflows and leading supplier integration architecture for the Alipay+ wallet ecosystem.

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My professional journey

Java Engineer (Level 10) - Voyager Supply Team

Ant International Group (Alipay+)

Mar 2026 - Present

Architected supplier integration platform enabling seamless onboarding of third-party vendors into the Alipay+ wallet ecosystem
Designed multi-tenant integration framework supporting diverse supplier APIs with contract standardization and protocol adaptation
Led wallet platform supply-side investment initiatives, coordinating cross-team deliverables
Pioneered AI-augmented development workflows, building custom AI Skills (MCP-based tooling) for automated system design, code generation, and integration testing
Developed reusable AI automation tools including SOFA RPC testing, DRM configuration management, and parameter center operations

Supplier Integration AI Engineering MCP/Skills System Design Multi-tenant

Java Engineer (Level 9) - CN Cross-Border Marketing

Ant International Group (Alipay+)

Aug 2024 - Feb 2026

Built high-traffic cross-border marketing platform serving 15M+ Chinese outbound users with 8,000+ daily traffic
Owned end-to-end delivery of per-transaction discount campaigns including referral programs, promotional lottery events, and cumulative spending promotions
Designed viral referral system enabling user-to-user invitation with real-time reward distribution and anti-fraud validation
Developed campaign management platform for large-scale promotional events (Double 11, CNY) with high concurrency and graceful degradation
Built intelligent marketing push system with user segmentation, timing optimization, and A/B testing
Achieved performance ratings of 3.5 (2024) and 3.75 (2025), resulting in promotion from Level 9 to Level 10

Cross-Border Payments Marketing Platform High Concurrency Campaign Systems Push Notification

IT Intern

Boston Scientific Medical Device (Malaysia)

Oct 2022 - Jan 2023

Conducted WiFi Onsite survey, delivering project 50% ahead of schedule
Developed 3 Power Apps (Referral, Survey, Request Tracking) improving operational efficiency by 20-30%
Built SharePoint site for Finance department, reducing processing time by 30%

Power Apps SharePoint IT Infrastructure