Full-stack engineer with 11 years of experience, from front end to back end, working fully remote. Front end: HTML5, CSS3, JavaScript, TypeScript, React, Vue.js, Nuxt.js, Next.js, Tailwind CSS, Sass/SCSS, Bootstrap, jQuery, Pug. Back end: PHP, Laravel, CodeIgniter, Node.js, Express.js, Koa.js, Python, Flask, RESTful API, JWT / OAuth2, FastAPI, Django. Databases: MySQL, MongoDB, MS-SQL, PL/SQL, Redis, Memcached, PostgreSQL. Mobile: Cordova (iOS / Android), React Native, Flutter. Cloud & DevOps: AWS, GCP, Docker, Kubernetes, Linux, Git / Git Flow, Jenkins, Drone CI, Webpack. AI & automation: LLM application integration, Python web scraping and workflow automation, third-party API integration, Claude-powered tools. Test automation: Playwright. Integrations: payments (ECPay / PayPal / Apple Pay / installments), e-invoicing, convenience-store logistics, LINE Official Account, Facebook Login, Acumatica ERP. Messaging: RabbitMQ, Kafka. Project tools: Scrum, Kanban, Jira, Redmine, Trello, Slack. Achievements: Led 3 major architecture migrations (microservices, cloud-native re-architecture, data-layer decoupling). Cut operating costs by 40% on average through those migrations. Grew multiple Tech Leads in a fully remote environment. Built internal tooling (e.g. automated environment setup) that cut new-hire ramp-up from 3 weeks to 5 days. Automated environment tooling that lets a team across 4 time zones start collaborating in 15 minutes. Improved PR review efficiency by 50% for a fully remote, cross-border team. Languages: Chinese (native). English: basic listening and speaking, intermediate reading and writing. I work with English-speaking clients in writing only (email / messages).