Resume

Thomas Chan - Frontend Architect & AI Product Specialist

• Phone: +86 186 1047 2034
• Email: chenjunhao5818@gmail.com
• Location: Beijing, China
• Technical Blog: chenjunhao.cn
• GitHub: github.com/thomaschan

Professional Profile

• Frontend Architecture: 8-year evolution of BI platform frontend infrastructure (React expert)
• AI Productization: Led enterprise AI assistant development (LLM applications/Agent frameworks/Vector search)
• Developer Efficiency: Built toolchains for CI/CD and workflow optimization
• Technical Leadership: Drove product technical direction with patented innovation (CN118093964B)

Professional Experience

Beijing Hengshi Technology Co., Ltd. (Dec 2016 - Present)

AI Product Technical Lead (2023 - Present)

• ChatBI System Development:
  • Engineered natural language query system using PostgreSQL vector extension
  • Integrated LLM APIs to build conversational intelligence layer
  • Commercialized as premium module, increasing contract value by 60%+
• Agent BI Platform Evolution:
  • Extended functionality boundaries using OpenAI Agent SDK
  • Implemented Github Copilot-like software operation capabilities
• Engineering Efficiency Systems:
  • Automated release notes generation (reduced 95% manual effort)
  • Multi-environment deployment pipeline (minimized configuration errors)
  • Standardized bug prioritization framework (adopted team-wide)

Frontend Architecture (2016 - Present)

• Established foundational React architecture as first frontend engineer
• Directed continuous tech stack evolution:
  • Spearheaded TypeScript migration
  • Created reusable component library
  • Optimized engineering systems (build/testing/deployment)
• Key system transformations:
  • Visualization engine performance overhaul
  • Authorization module redesign
  • AI-enhanced i18n solution implementation

Antourong (Beijing) Network Technology Co. (Oct 2014 - Dec 2016)

Full Stack Developer

• Developed core financial platform modules (trading/user systems)
• Implemented API security mechanisms against brute-force attacks
• Tech Stack: PHP (Yii)/MySQL/React/JavaScript

Beijing Wogou Technology Co. (Mar 2014 - Oct 2014)

Web Developer

• Built carrier-grade WiFi authentication portal systems
• Tech Stack: HTML/CSS/JavaScript

Technical Proficiencies

Frontend

• React/TypeScript
• State Management
• Webpack/Rspack
• Performance Optimization

AI Systems

• Prompt Engineering
• Context Engineering
• RAG
• Vector Search (PGvector)
• Agent Frameworks
• GitHub Copilot

Engineering Practices

• Node/Deno
• CI/CD Design
• Playwright E2E Testing
• Developer Tooling