tomwang
Senior Test Development / Risk Quality Platform
Senior Test Development / Risk-Quality Platform. 6 years in PayPal's risk org leading release-quality systems for anti-fraud / AML decisioning models — built RQA, variable-quality, performance, and release-monitoring platforms from 0→1, cutting model-regression cycles from 1–2 weeks to 2–3 days and serving nearly 300 internal users. Full-stack engineering background; familiar with cross-border payments.
Experience: 7 years
Yearly salary: $84,000
Hourly rate: $0
Nationality: 🇨🇳 China
Residency: 🇨🇳 China
Experience
QA (Contractor, Remote)
Better Payment Network (BPN) 2025 - 2026
Fixed-term project-based engagement on stablecoin cross-border infrastructure; built self-service perf / RQA / API test capabilities.
QA
Yeepay 2025 - 2025
Cross-border forex center: FX rates, slippage, routing, exposure netting, order book; no capital-loss incidents.
QA Engineer
ByteDance 2022 - 2022
Left due to role mismatch and returned to PayPal the same year to continue on the model-release quality platform.
Risk-Model QA
PayPal 2019 - 2025
Anti-fraud / AML decisioning models; four-site team (Shanghai / SJC / TLV / Bangalore). Led the 0→1 build of the risk QA test platform, cutting release QA from 1–2 weeks to 2–3 days, and integrated 10+ internal tools.
Full-Stack Engineer
Thoughtworks 2018 - 2019
Java backend + React frontend + Android project rotation; 2-month global TWU training.
Skills
finance
java
python
react
web3
quality-assurance
english
chinese-mandarin