Senior full-stack developer for web, mobile, dashboards, and AI tools

Product-grade full-stack systems

I am a Senior Full Stack Developer and AI Application Engineer specializing in AI Application Engineering.

I build practical business products across React, Vue, Next.js, Node.js, Python, Java Spring Boot, PostgreSQL, and mobile web. My recent work focuses on AI agents, RAG knowledge assistants, workflow automation, admin systems, and data dashboards.

Appier•TPIsoftware•SHOPLINE•Galaxy Software Services

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10+

Years full-stack experience

Agents, RAG, workflow tools

Web/Mobile

React, Vue, Next.js, Flutter

Backend

Node, Python, Java, databases

Skills

A practical product engineering toolkit

Frontend, backend, mobile, data, infrastructure, and AI tools used across real business systems.

Frontend

React.jsNext.jsVue.jsAngularTypeScriptJavaScriptTailwindCSS

Backend

Node.jsExpress.jsNestJSPythonFastAPISpring BootPHPLaravelRuby/Rails

Mobile & AI

FlutterReact NativeAI AgentsGraphQL

Data & Infra

MongoDBPostgreSQLMySQLRedisDockerKubernetesGitLinux

Projects

Selected product work

Personal Project

AI / RAG Assistant

AI Support Assistant (RAG)

A production-ready RAG customer-support assistant that answers only from a business's own documents, cites its sources, and hands off to a human when unsure — with a customer chat app and an admin console for documents, history, and answer testing.

Next.jsPythonFastAPIRAG

Personal Project

Full-Stack App

VisaPortal — Visa Navigator

A visa-information portal to add, browse, and apply for visas — with authentication, filtering, and a personal application tracker.

ReactNode.jsExpressMongoDB

SHOPLINE

E-commerce Platform

SHOPLINE Commerce Platform

Asia's leading smart-commerce SaaS (600k+ merchants, 1.5B+ consumers) — online store builder, checkout, membership, marketing automation, and multichannel selling.

ReactVue.jsNode.jsMySQL

SHOPLINE

Retail / Omnichannel

SHOPLINE POS & OMO

SHOPLINE's online-merge-offline point-of-sale — unified inventory, promotions, and member data across web and in-store, run from mobile and tablet devices.

FlutterReact NativeNode.jsMySQL

SHOPLINE

E-commerce Store

DR.WU

DR.WU is Asia's #1 mandelic-acid dermocosmetics brand, with the WUCLUB loyalty program and multi-region shipping.

Vue.jsLaravelPHPMySQL

SHOPLINE

E-commerce Store

Rasonic eShop

Rasonic is a Hong Kong home-appliance brand (since 1976), carrying Panasonic, KDK, and Breville.

Vue.jsLaravelPHPMySQL

SHOPLINE

E-commerce Store

ROBINMAY

ROBINMAY is a popular Taiwan handbag brand with RM, ELLY, and EVO lines and Disney/Sanrio collaborations.

Vue.jsLaravelPHPMySQL

SHOPLINE

E-commerce Store

FUMBLE

FUMBLE is a Hong Kong fashion and lifestyle retailer (2012) known for original designs and local-artist collaborations.

Vue.jsLaravelPHPMySQL

SHOPLINE

E-commerce Store

ROCOCO

ROCOCO is a fashion brand featured in SHOPLINE's official merchant showcase.

Vue.jsLaravelPHPMySQL

SHOPLINE

E-commerce Store

A.F.S

A.F.S is a Hong Kong womenswear brand offering quality clothing and special styles at accessible prices.

Vue.jsLaravelPHPMySQL

SHOPLINE

E-commerce Store

HORNINGTON

HORNINGTON is a Hong Kong audio and entertainment retailer.

Vue.jsLaravelPHPMySQL

SHOPLINE

E-commerce Store

World-Tech

World-Tech is a Hong Kong distributor of audio and entertainment brands.

Vue.jsLaravelPHPMySQL

SHOPLINE

E-commerce Store

Durex HK

The official Hong Kong store for Durex, the sexual-wellness brand.

Vue.jsLaravelPHPMySQL

SHOPLINE

E-commerce Store

Onkee

Onkee is a merchant featured in SHOPLINE's official merchant showcase.

Vue.jsLaravelPHPMySQL

SHOPLINE

E-commerce Store

S.A Group

S.A Group is a merchant featured in SHOPLINE's official merchant showcase.

Vue.jsLaravelPHPMySQL

SHOPLINE

E-commerce Store

Max Choice

Max Choice is a merchant featured in SHOPLINE's official merchant showcase.

Vue.jsLaravelPHPMySQL

SHOPLINE

E-commerce Store

ANS

ANS is a merchant featured in SHOPLINE's official merchant showcase.

Vue.jsLaravelPHPMySQL

SHOPLINE

E-commerce Store

Serco Store

Serco Store curates high-quality items from Japan, Korea, and the US.

Vue.jsLaravelPHPMySQL

SHOPLINE

E-commerce Store

Fancy Rosy

Fancy Rosy (2010) is a Hong Kong brand offering casual and elegant women's outfits.

Vue.jsLaravelPHPMySQL

SHOPLINE

E-commerce Store

The Watchdrobe

The Watchdrobe is a Hong Kong watch boutique for independent timepiece brands.

Vue.jsLaravelPHPMySQL

SHOPLINE

E-commerce Store

Banananaxx

Banananaxx is a fashion merchant featured in SHOPLINE's official merchant showcase.

Vue.jsLaravelPHPMySQL

SHOPLINE

E-commerce Store

MIRO

MIRO is a lingerie and intimates brand.

Vue.jsLaravelPHPMySQL

SHOPLINE

E-commerce Store

Lovebird Diamond

Lovebird Diamond is a diamond and fine-jewelry brand.

Vue.jsLaravelPHPMySQL

SHOPLINE

E-commerce Store

HUSKY

HUSKY is a sneaker and footwear brand.

Vue.jsLaravelPHPMySQL

SHOPLINE

E-commerce Store

RNG Wine

RNG Wine is a Hong Kong online wine retailer (since 2016).

Vue.jsLaravelPHPMySQL

SHOPLINE

E-commerce Store

Lemon King

Lemon King is a merchant featured in SHOPLINE's official merchant showcase.

Vue.jsLaravelPHPMySQL

SHOPLINE

E-commerce Store

Hiwalk

Hiwalk is a snack and food brand.

Vue.jsLaravelPHPMySQL

SHOPLINE

E-commerce Store

Tsui Heung 1949

Tsui Heung 1949 is a heritage Hong Kong food brand.

Vue.jsLaravelPHPMySQL

SHOPLINE

E-commerce Store

Leung Cha Fong

Leung Cha Fong is a Hong Kong herbal-tea brand.

Vue.jsLaravelPHPMySQL

SHOPLINE

E-commerce Store

THE BAKERISM

THE BAKERISM is a Hong Kong bakery.

Vue.jsLaravelPHPMySQL

SHOPLINE

E-commerce Store

Wing Lok Noodle

Wing Lok Noodle Factory is a Hong Kong noodle brand.

Vue.jsLaravelPHPMySQL

SHOPLINE

E-commerce Store

Miya's Works

Miya's Works is a merchant featured in SHOPLINE's official merchant showcase.

Vue.jsLaravelPHPMySQL

SHOPLINE

E-commerce Store

LAM SAM YICK

LAM SAM YICK is a heritage Hong Kong provisions brand.

Vue.jsLaravelPHPMySQL

SHOPLINE

E-commerce Store

Inna Organic

Inna Organic is an organic skincare brand.

Vue.jsLaravelPHPMySQL

SHOPLINE

E-commerce Store

DEAD SEA MOR

DEAD SEA MOR is a Dead Sea mineral skincare brand.

Vue.jsLaravelPHPMySQL

SHOPLINE

E-commerce Store

CB Living

CB is a Japanese lifestyle department store.

Vue.jsLaravelPHPMySQL

SHOPLINE

E-commerce Store

This Way

This Way is a merchant featured in SHOPLINE's official merchant showcase.

Vue.jsLaravelPHPMySQL

SHOPLINE

E-commerce Store

Aiko Mall

Aiko Mall is a merchant featured in SHOPLINE's official merchant showcase.

Vue.jsLaravelPHPMySQL

SHOPLINE

E-commerce Store

GO POP STATION

GO POP STATION is a pop-culture and collectibles store.

Vue.jsLaravelPHPMySQL

SHOPLINE

E-commerce Store

Anglo Chinese Florist

Anglo Chinese Florist is a Hong Kong florist.

Vue.jsLaravelPHPMySQL

SHOPLINE

E-commerce Store

Lego Pet

Lego Pet is a Hong Kong pet-supplies retailer.

Vue.jsLaravelPHPMySQL

SHOPLINE

E-commerce Store

FA'LOVERS

FA'LOVERS is a beauty merchant featured in SHOPLINE's official merchant showcase.

Vue.jsLaravelPHPMySQL

SHOPLINE

E-commerce Store

FUNCOLOR

FUNCOLOR is a merchant featured in SHOPLINE's official merchant showcase.

Vue.jsLaravelPHPMySQL

SHOPLINE

E-commerce Store

JaBo Baby

JaBo Baby offers baby and maternity products.

Vue.jsLaravelPHPMySQL

SHOPLINE

E-commerce Store

MOANA

MOANA is a fashion merchant featured in SHOPLINE's official merchant showcase.

Vue.jsLaravelPHPMySQL

SHOPLINE

E-commerce Store

Ozzie Bestbuy

Ozzie Bestbuy sources quality goods — baby care, health, and cosmetics — from Australia.

Vue.jsLaravelPHPMySQL

SHOPLINE

E-commerce Store

DMAG

DMAG is a merchant featured in SHOPLINE's official merchant showcase.

Vue.jsLaravelPHPMySQL

SHOPLINE

E-commerce Store

Thinking Group

Thinking Group is a merchant featured in SHOPLINE's official merchant showcase.

Vue.jsLaravelPHPMySQL

SHOPLINE

E-commerce Store

ORINGO 林果良品

ORINGO 林果良品 is a Taiwan handmade-leather-shoe brand (since 2006).

Vue.jsLaravelPHPMySQL

SHOPLINE

E-commerce Store

京盛宇 JSY

京盛宇 (JSY) is a premium Taiwan tea brand.

Vue.jsLaravelPHPMySQL

Appier

Conversational AI Platform

BotBonnie

Appier's no-code omnichannel chatbot platform for conversational marketing across LINE, Messenger, Instagram, WhatsApp, and web chat — live brands include Audi Taiwan, Gogoro, and Tiger Beer.

ReactTypeScriptNode.jsMongoDB

Appier

AI Marketing / Personalization

AIQUA Personalization Cloud

Appier's AI personalization and marketing-automation cloud — unifying customer data into 360° profiles and orchestrating AI-personalized journeys across email, ads, push, and in-app.

ReactPythonFastAPIPostgreSQL

Appier

AI Data / CDP

AIXON Data Science Platform

Appier's intelligent data-augmentation / CDP platform — enriching customer data with AI-predicted interests to build audience segments and drive multi-channel campaigns.

ReactPythonFastAPIPostgreSQL

Appier

Generative AI

AdCreative.ai

A generative-AI platform (an Appier company, 4M+ users) that produces high-converting ad creatives, product photography, and copy in minutes, with AI creative scoring.

Next.jsNode.jsPythonMongoDB

Appier

AI Conversion

AiDeal Conversion Cloud

Appier's conversion-optimization cloud that detects hesitant shoppers from 400+ behavioral signals and converts them with on-site webchat and dynamic coupons.

ReactPythonFastAPIPostgreSQL

Appier

Analytics / Data

Woopra Product Analytics

A customer-journey and product-analytics platform (now part of Appier's AIRIS CDP) serving 160,000+ customers, with end-to-end tracking and no-SQL visual analytics.

ReactNode.jsExpressMongoDB

TPIsoftware

API Platform / Backend

digiRunner API & AI Gateway

TPIsoftware's cloud-native, open-source API + AI gateway for full-lifecycle API management — 300+ GitHub stars, on AWS Marketplace, with seven patents and ISO 27001.

JavaSpring BootAngularPostgreSQL

TPIsoftware

Enterprise AI / Chatbot

SysTalk.Chat Conversational AI

An enterprise conversational-AI brain (NLU + FAQ dual-brain design) powering live public services such as YouBike's 24/7 customer service and Sinyi Realty's home-search assistant.

JavaSpring BootVue.jsPostgreSQL

TPIsoftware

Observability / Backend

digiLogs Log Management

A centralized log-management and observability platform for microservices — distributed tracing, ~2-minute root-cause analysis, and 10,000+ events/sec throughput.

JavaSpring BootVue.jsPostgreSQL

Galaxy Software Services

CRM / SaaS

Vital CRM

GSS's SME CRM — the only Taiwan product in Gartner's 2017 CRM Vendor Guide — with unified profiles, RFM analysis, and web + mobile apps.

Vue.jsJavaPHPMySQL

Galaxy Software Services

Forms / Workflow

Vital BizForm

GSS's cloud smart-forms and workflow platform — visual form builder, approval flows, SMS/email verification, and Vital CRM integration.

Vue.jsJavaPHPMySQL

Galaxy Software Services

Knowledge Management

Vital Knowledge

GSS's enterprise knowledge-management platform connecting people, knowledge, and ideas with AI-assisted search and real-time sync.

Vue.jsJavaPHPMySQL

Galaxy Software Services

HR / SaaS

Vital HCM

GSS's HR / human-capital platform digitizing personnel, leave, attendance, payroll, insurance, and tax processes for SMEs.

Vue.jsJavaPHPMySQL

Galaxy Software Services

Document / Workflow

Vital OD

GSS's official-document (公文) management platform — paperless drafting, approval routing, and electronic document exchange.

Vue.jsJavaPHPMySQL

Galaxy Software Services

Compliance / SaaS

Vital CMP

GSS's compliance-management platform — track regulatory obligations, controls, and audits with reporting dashboards.

Vue.jsJavaPHPMySQL

ChingYao Wang

Senior Full Stack Developer / AI Application Engineer

10+ years

Web, mobile, backend, and business systems

2022-2026

AI workflow platform and RAG assistant work

Taiwan

English working proficiency for technical teams

About Me

Senior full-stack engineer for complex business products and AI-enabled workflows.

Hi, I'm ChingYao Wang, a senior full-stack developer and AI application engineer with more than 10 years of experience building web apps, mobile experiences, internal management tools, dashboards, CRM systems, and business automation products.

My main frontend stack is React, Vue, Next.js, TypeScript, and JavaScript. On the backend, I work with Node.js, PHP/Laravel, Python/FastAPI, Java Spring Boot, REST APIs, authentication, database design, service integrations, and deployment support.

Recently I have focused on AI product features including AI agent workflows, RAG-based knowledge assistants, prompt templates, internal AI tools, human review processes, and responsible AI training for engineering and business teams.

Full-stack delivery

React, Vue, Next.js, Node.js, Python, Java Spring Boot, APIs, databases, and deployment support.

Business systems

Admin dashboards, RBAC, workflows, reports, CRM, e-commerce, transaction tools, and operations pages.

AI application work

AI agents, RAG assistants, prompt workflows, safe internal AI usage, and AI-assisted engineering.

Contact

Get in touch

Have a dashboard, business workflow, AI tool, mobile web product, or backend challenge? Send the details and let's talk.

Connect With Me

WhatsApp GitHub LinkedIn Resume PDF

yaowork168@gmail.com

Hire me to build your next project

I build maintainable full-stack products with clear data flows, practical UI, reliable APIs, and responsible AI workflows.