Jack W.

Lead Full-Stack Architect & Fractional CTO

Independent Tech Consultant / Stealth Startup • Freelance

Mar 2019 - Present • 7 yrs 2 mos

Currently building and scaling an independent tech startup while providing "Fractional CTO" and architectural consulting services to international clients. • Architecting and delivering end-to-end SaaS platforms, MVPs, and enterprise tools using Java Spring Boot, Vue3, React, and Flutter. • Integrating cutting-edge AI technologies (OpenAI LLMs, RAG) into traditional business workflows. • Specializing in transforming complex business ideas into scalable, bank-grade technical architectures.

Director of Engineering

Huobi Global (Top-tier Cryptocurrency Exchange) • Fulltime

Jun 2018 - Feb 2019 • 8 mos

Led the engineering team for the blockchain news and data platform at one of the world's largest cryptocurrency exchanges. • Architected a high-concurrency content delivery system serving millions of global users across PC, Mobile, and App platforms. • Built robust RESTful APIs to aggregate data from 9 mainstream blockchain media outlets. • Spearheaded team building, talent development, and established an automated testing platform to ensure zero-downtime deployments in a highly volatile crypto market.

Deputy Director of Engineering (Fintech & SaaS)

Meili Finance • Fulltime

Nov 2015 - Jun 2018 • 2 yrs 7 mos

Built the engineering team from 0 to 1 and architected core financial and risk management platforms handling millions of dollars in transactions. • Designed and engineered a highly secure B2B Wealth Management SaaS system and a comprehensive Loan Approval platform. • Developed real-time credit data parsing APIs interfacing directly with the Central Bank of China (PBOC) under strict security compliance. • Led legacy data migration, system refactoring, and mentored a large team of developers in Java and Spring MVC best practices.