Guo Li

Senior Frontend Engineer — open to relocation

LocationTokyo, Japan
Emailleeguooooo@gmail.com
GitHubleeguooooo
LinkedInli-guo

§ 01 — Summary

Profile.

Senior Frontend Engineer with 11 years of experience building consumer-facing products and commercial platforms at large-scale internet companies. Deep expertise in React, Web, and H5 development. Proven track record of end-to-end delivery — from requirements through architecture design to production — across frontend, backend, and infrastructure. Active open-source contributor with 500+ GitHub stars across personal projects.

§ 02 — Skills

Technical stack.

Frontend: React, React Native, Vue 3, TypeScript, JavaScript (ES6+), HTML5, CSS3, Webpack, Babel
Backend: Go, Node.js, Python (Flask), Java (Spring Boot), PostgreSQL, DynamoDB, Redis
Infrastructure: Cloudflare Workers / Durable Objects / D1 / KV, AWS (Lambda, Elastic Beanstalk), CI/CD pipelines, monitoring
Practices: OpenAPI 3.1 contract-driven development, component library design, performance optimisation, agile delivery, cross-team collaboration

§ 03 — Experience

Track record.

Port Wind Backend / Full Stack
Apr 2025 – Present
Tokyo

Platform engineering for a social entertainment platform — voice rooms, IM, prediction games, short video, AI content

Shipped 8+ services end-to-end across AWS (ap-southeast-1) and Cloudflare global edge, primarily in Go and TypeScript.

Voice Room Service Go · AWS EB · DynamoDB + Redis + CF KV — core product backend (room lifecycle, state sync, leaderboard push), contract-driven via OpenAPI 3.1
IM Chat Microservice Go · AWS Lambda · Zego IM · DynamoDB — 1-on-1 and group messaging; 10× faster daily chat stats query via GSI + materialised snapshot
Prediction Game Service Go · Ogen — unified admin/game/internal APIs under a single OpenAPI spec; git hook auto-syncs contract to YApi on push
Distributed KV / API Gateway Cloudflare Workers + Durable Objects — scaled concurrent capacity from 50 to 2,400+ (48×); reduced p50 latency from 200ms → 50ms via dual-layer caching and sharding; 99.9% availability
Short Video / Live Backend Cloudflare Workers — content management, personalisation, and streaming endpoints for a million-scale live platform
AI Content Services CF Workers + Hono — integrated fine-tuned Gemini models into auto-comment and AI companion features
Platform engineering — contract-first workflow across services (OpenAPI 3.1 → Ogen codegen → YApi auto-sync); internal Vue 3 admin console; shared error-code registry and Pages deployment templates

SuppTech Senior Frontend Lead
Aug 2024 – Mar 2025
Tokyo

Built and led a 12-person team from scratch — delivered Suppart on schedule

Recruited and built a 12-person cross-functional team (frontend, iOS, QA) from scratch
Established code review standards, agile workflows, daily standups, and iteration retrospectives
Built complete frontend infrastructure from zero: component library, CI/CD pipeline, and monitoring system
Delivered Suppart — a digital art platform — to the App Store on schedule (apps.apple.com/jp/app/suppart)

Zhihu Frontend Developer
Apr 2021 – Dec 2023
Beijing

Consumer & commercial platforms at China's largest Q&A platform — NYSE-listed, 100M+ MAU at peak

Good Product Recommendation Sep 2022 – Dec 2023

Built end-to-end Web and H5 flows for a creator monetisation feature linking content to commerce
Integrated 7 major e-commerce platforms: Taobao, JD.com, Pinduoduo, Amazon, Suning, Vipshop, and others
Designed and maintained a product card and recommendation component library used across Web and H5

Commercial Membership Dec 2021 – Jan 2022

Sole frontend engineer; independently delivered MVP covering membership activation, content registration, and asset management
Platform attracted 1,000+ clients after launch

Zhishi (Knowledge) Platform May 2021 – Dec 2023

Delivered B-end and C-end web and H5 features for a commercial platform serving creators and brand owners
Built multiple feature modules from scratch: reusable tasks, special tasks, and crowdsourcing task workflows
Team recognised with internal Route Pioneer Award (Feb 2022)

Qunar Frontend & Full Stack
Mar 2015 – Mar 2020
Beijing

Platform & internal systems at one of China's largest OTA platforms — NASDAQ-listed, part of Trip.com Group

Workflow Platform Dec 2018 – Mar 2019

Identified that fragmented internal workflow tools caused significant duplicated effort across teams
Proposed and built a unified workflow platform (React + Java/Spring Boot + PostgreSQL) from scratch
Replaced the legacy OA system entirely within 3 months of launch; migrated 130 frequently-used workflows in the first 2 weeks
Reduced workflow setup time from days to under 30 minutes; open-sourced on GitHub in 2019

Qtalk Discovery + opsapp-tools Mar 2017 – Mar 2020

Unified HR, IT, attendance, and ops systems into a single mobile-accessible internal app
Built full stack: React Native frontend + Python/Flask/PostgreSQL backend
Created a hot-update publishing platform supporting hot release, canary release, and beta release
Centralised all company approval workflows into a unified approval centre

§ 04 — Open Source

Side of the desk.

Project	Stars	Description
claude-code-usage-bar	★ 207	Real-time token usage, burn rate, and budget monitor for Claude Code (Python)
cross-request-master	★ 148	Browser plugin for YApi — enables cross-origin API testing inside the visual API platform (JS)
Mailbox	★ 36	Email automation skill / toolkit (JavaScript)
agent-cli-to-api	★ 33	OpenAI-compatible API gateway for AI agent CLIs (Codex, Claude Code, Cursor, Gemini)
agent-browser-stealth	★ 14	Browser automation CLI for AI agents (Rust)
prompt-language-coach	★ 12	Real-time language coaching in Claude Code — auto-corrects and teaches (Python)
paste	★ 10	Open-source macOS clipboard manager with Cloudflare sync (TypeScript)

500+ cumulative stars · github.com/leeguooooo ↗

§ 05 — Education

Credentials.

Bachelor of Software Engineering — CCUT Humanities College

2011 – 2015