Freelance full-stack developer
I’m Zo. I build websites, mini programs and mobile apps,
as well as IoT integrations, desktop software and 3D tools.
Web, mini programs and apps. Tuya smart homes, Bluetooth hardware, business systems and 3D viewers.
Health research, in everyday life.
A community health-research app connecting research wearables, daily activity and a researcher dashboard.
Android app, researcher dashboard and APIs; wearable data collection, activity plans, questionnaires and notifications.
Kotlin · Jetpack Compose · Vue · NestJS
From inventory to connected equipment rooms.
Inventory, issue and inspection workflows integrated with Tuya locks and doorbells, device events and administrator access approval.
Web admin, Android clients and Windows software; scanning, 3D rooms, doorbell notifications and lock-specific approval, with Tuya OpenMQ events.
React · Express · React Native · Electron · Tuya IoT
Making connected devices feel simple.
Mobile apps connecting to and controlling hardware over Bluetooth LE, from discovery and connection management to DFU firmware updates.
ARC Android / iOS and BigRock iOS development; BLE communication, DFU adaptation and hardware integration.
Vue · uni-app · Bluetooth LE · DFU
Connecting the work on the factory floor.
A rebuilt desktop system joining orders, process sheets, fabric tickets, inspection, stock and printing.
Windows client and on-premise server; barcode entry, fabric-ticket workflows, permissions, printing and exports.
Electron · Node.js · PostgreSQL
Different challenges. The same care.
Tuya Ray / Custom device panelA custom thermostat panel inside Smart Life, with temperature controls, operating modes, DP data adaptation and multilingual UI.
IoT / Recycling devices / H5Maps, QR deposits and device APIs connecting collection terminals, reward records and an admin console.
React Native / APICustomer booking and provider jobs, with orders, chat, location and payment flows.
WeChat Mini Program / AdminSessions, shared-table seat selection and drink orders, connecting guests with the merchant dashboard.
CAD / Web 3DParse DWG / DXF into web-based 3D models, with QR sharing, orbit controls and interactive doors and drawers.
Web / Software licensingProduct licenses, device allowances, activation codes and software releases.
Brand websites / Content managementTemplate adaptation and brand customization, with CMS Core for pages, products, news and website publishing.
Browser extension / ProductivityRead product information, map fields and save drafts with less manual entry.
GIS / Map visualizationRegional maps, monitoring data, online reporting and alerts in one place.
Project-based work covering requirements, product design and software development.
I’m Zo, a freelance full-stack developer. I like making sense of scattered ideas, then turning them into useful, considered software.
You work directly with the person building your product. From a fresh start to an existing system, I care about everyday usability and keeping the software maintainable after launch.
Work through real use cases, essential features and priorities before building.
Bring frontends, backends, Bluetooth, device events and notifications into a working experience.
Consider deployment, error handling and documentation, with room for the next iteration.
An idea, a brief, or a problem you want to solve. I’d love to hear it.
