Senior Full Stack Developer / AI Application Engineer at Appier

React · Vue · Next.js · Node.js · Python · Java Spring Boot · AI agents · RAG 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 user management, workflow execution, notifications, data sync, and AI API calls. - Built AI agent features: prompt templates, tool calling, knowledge base access, task summaries, draft generation, and a human review step before anything ships. - Built a RAG knowledge assistant that searches internal documents, FAQs and operating manuals, and shows where each answer came from. - Built backstage modules for roles and permissions, team settings, workflow config, audit logs, prompt templates, and usage records. - Used AI coding tools day to day for scaffolding, API drafts, refactor ideas, test outlines and docs — always reviewing the output myself before it goes to production. - Ran internal training for developers and business users on writing prompts, checking AI output, and handling internal data safely. Products I contributed to: BotBonnie, AIQUA / AIRIS, AIXON, AdCreative.ai, AiDeal, Woopra.

Full Stack Developer at TPIsoftware

React · Vue · Node.js · Java Spring Boot · PostgreSQL · Redis 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 records and reporting. - Implemented RBAC, menu configuration, audit logs, operation logs and data access rules. - Built complex tables and forms with search, filters, export, batch actions, dynamic fields and multi-step submission. - Used PostgreSQL, MySQL and Redis for business data, caching and performance. - Handled API design, back-end troubleshooting and production issues. Products: digiRunner (API gateway), SysTalk.Chat, digiLogs.

Full Stack Developer at SHOPLINE

Vue · React · PHP · Laravel · Node.js · Flutter · React Native · MySQL 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 processing, coupon usage, member points and profiles. - Built mobile modules in Flutter and React Native for retail staff tools, member campaign pages and WebView pages. - Built retail operation tools for orders, product config, inventory status, coupon rules, campaigns and customer service records. - Integrated payment, SMS verification, file upload and analytics services. - Improved mobile performance with lazy loading, image optimization and faster API responses. Also delivered storefronts for around 46 live brands including DR.WU, Durex HK, ROBINMAY and 京盛宇.