YIJINLEE.COM

English Profile

About Me & Portfolio

🚀 Profile Summary

Senior Full-Stack Engineer with 10 years of experience delivering reliable, scalable products across FinTech and international mobile platforms. Based in Shenzhen, China.

I turn ambiguous requirements into maintainable systems — owning architecture, implementation, CI/CD, observability, and production support. Recent work improved delivery efficiency by 40%, e-commerce conversion by 15%, and component reuse to 70%.

🛠️ Core Expertise & Value I Bring

  • End-to-End Ownership: Translate vague product goals into scalable TypeScript/Vue solutions with strong test coverage and low production error rates.
  • Production Debugging: Trace root causes across legacy codebases and distributed systems; build repeatable diagnostics to resolve critical bottlenecks fast.
  • AI-Assisted Engineering: Use Cursor and LLMs to accelerate delivery — with context management and testing guardrails to keep AI-generated code production-safe.
  • Legacy Modernization: Incrementally refactor high-risk systems without disrupting active delivery or service availability.

📈 Selected Project Highlights

1. Core Architecture & Feature Delivery | International Mobile Application

Role: Core Full-Stack Developer (End-to-End Ownership)

  • Situation: High-traffic cross-border mobile platform on a distributed microservices stack, serving millions of users.
  • Task: Ship features quickly without compromising stability under heavy concurrency.
  • Action: Modeled complex business logic in TypeScript (OOA/OOD) to reduce coupling; automated CI/CD; added logging and performance monitoring to catch issues before production.
  • Result: Zero-downtime releases and stable performance at scale.

2. Huawei Trading & Finance Programs | Senior Frontend Engineer

Period: 2023.06 - 2025.06

Led frontend for Huawei core modules — Pricing IPMS, Trading & Finance Contract Center, overseas e-commerce, and WeLink mini-programs (Vue2/Vue3, TypeScript, XUI, ECharts). Achieved sub-35ms page loads, zero production incidents, and team-wide code review leadership.

Overseas e-commerce link: https://consumer.huawei.com/mx/offer/

  • Delivery: Owned Trading & Finance, IPMS, Order, and Quotation modules — 100% code review pass rate, zero production incidents.
  • AI Enablement: Rolled out an AI toolchain and best-practices playbook; team delivery efficiency up 40%.
  • Documentation: Built an AI component-doc generator — 70% automation, doc freshness 50% → 95%.
  • Team Impact: Drove AI adoption in code review, testing, and perf analysis; led 3 internal knowledge sessions.
  • Business: Overseas e-commerce conversion +15% via load-speed and UX optimization.
  • Efficiency: Component reuse to 70%, repeated dev down 30%, ~CNY 200K annual savings.

🏃‍♂️ Beyond Coding: The Long-Distance Mindset

Marathon runner for 10 years — discipline, pacing, and resilience under pressure.

I bring the same mindset to engineering: sustainable velocity through consistent, high-quality delivery — not burnout sprints. I build systems designed to scale and endure.

📫 Let's Connect

Open to senior full-stack roles where ownership, code quality, and measurable business impact matter.

Email: 858005598@qq.com

GitHub / Source Code: Link to personal site repository

Case Studies: Explore My Tech Blog (Chinese) →

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