work9850311

Built and led from scratch a high-performance backend game server using Clean Architecture, with extensive unit tests and end-to-end tests to ensure code quality and reliability. Implemented a high-concurrency transaction server for games using a Redis → NATS → PostgreSQL → ClickHouse pipeline to handle transactional flows safely and efficiently. Built and led GPMS, an admin panel for game services, adding features and maintaining a large suite of end-to-end tests for critical workflows. Led a complete rewrite of the legacy management system (CMS 2.0), designing core modules such as authentication and authorization, and using AI-assisted BDD-style end-to-end tests to cover edge scenarios.

Maintained and enhanced core cryptocurrency exchange components, including Spot Trading, Futures, Wallet, and Admin Panel.

Developed and maintained a gateway integrating with hundreds of third-party payment systems, supporting multiple payment methods and numerous merchant sites through a unified interface. Led the backend development of a cryptocurrency payment system supporting USDT deposit and withdrawal flows. Implemented crawlers to fetch deposit records from banks and execute automated withdrawal scripts.