ChingYao Wang
@chingyaowang
Full-stack engineer building AI-powered business tools, shipping web/mobile features end-to-end with React, Node, and Spring Boot.
TaiwanWhat I'm looking for
I have been building web and mobile products for more than 10 years—customer-facing apps, admin systems, and in the last few years, AI-powered business tools. I care about why a feature exists and how people will actually use it, so I focus on real business systems like SaaS products, enterprise platforms, e-commerce/retail, CRM, data dashboards, knowledge bases, and internal automation.
Recently that has included AI agents, RAG knowledge assistants, prompt workflows, and training developers and business teams to use AI tools properly. I am comfortable moving between front end and back end, using React/Vue/Next.js and mobile Flutter/React Native/WebView, with back-end services in Node.js, Python, and Java Spring Boot—and I do not disappear when something breaks in production.
Experience
Work history, roles, and key accomplishments
Full Stack Engineer (AI)
Freelance
Feb 2026 - Present (5 months)
Freelance full stack and AI application engineering work.
Worked as Full Stack Engineer | AI Application Engineer at Freelance | Self-Employed.
Worked across Appier's product and internal platform work: business workflow management, AI automation tools, desktop and mobile web, admin backstage, knowledge search, agent workflows, and reporting.
- Built front-end features in React, Vue and Next.js: dashboards, workflow pages, user centers, data views, configuration pages.
- Built back-end services in Node.js, Python and Java Spring Boot for
Worked on business workflow management and AI automation tools across desktop/mobile web and internal admin/knowledge search experiences. Built backend services for user management and workflow execution, and delivered AI agent and RAG knowledge assistant features with a human review step.
Enterprise digital transformation products: internal management systems, approval workflows, reporting dashboards, and operations tools used across departments. These systems needed careful permission control and reliable data handling.
- Built admin dashboards and internal systems with React, Vue and TypeScript.
- Built back-end APIs in Node.js and Java for user roles, department data, file recor
E-commerce, retail operations, membership systems and cross-platform mobile apps. I worked on storefront pages, mobile app modules, store staff tools, and the services behind orders, products, coupons and memberships.
- Built product list and detail pages, cart, checkout, payment result, member center and coupon pages.
- Built back-end APIs in PHP/Laravel and Node.js for product management, order
Where my full-stack career started. Business web systems: front-end pages, back-end APIs, database work, and internal tools for the team.
- Built CRM modules for customer records, follow-ups, contracts, task reminders and business reports.
- Built back-end features in PHP, Java and Node.js: CRUD APIs, authentication, file uploads, exports and scheduled jobs.
- Built front-end pages with Vue.js, jQ
Education
Degrees, certifications, and relevant coursework
Minghsin University of Science and Technology
Bachelor’s, Computer Science
2011 - 2015
Tech stack
Software and tools used professionally
Availability
Location
TaiwanAuthorized to work in
Website
yaowork-portfolio.vercel.appPortfolio
yaowork-portfolio.vercel.appSocial media
Job categories
Skills
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