DEVELOPER • DIGITAL PRODUCT BUILDER
I build
digital products.
From high-performance websites to custom software, apps and scalable systems. I turn ideas into real, working digital products.
- Websites
- Apps
- Software
- AI & Automation
- Google Ads
SERVICES
What I build
Different ideas. Same goal. Real solutions.
I work across web, mobile, desktop and automation — combining clean design with solid engineering to create products that actually make a difference.
Explore all servicesWebsites
Modern, responsive and performance-focused websites for businesses, products and personal brands.
Web Applications & SaaS
Scalable browser-based applications and SaaS products with modern interfaces and backend systems.
Software & Systems
Custom software and internal business systems designed around specific workflows and requirements.
Desktop Apps
Desktop and Windows applications, including distributable .exe applications.
iOS Apps
Modern applications designed for the Apple / iOS ecosystem.
AI & Automation
AI integrations and automation that reduce repetitive work and connect systems.
Google Ads & Growth
Campaign setup, conversion tracking and technical support for digital campaigns.
FEATURED WORK
Selected
Work
A selection of projects that show what I build and how I approach digital products.
View all projectsSaaS platform
Replace with a real project: who it was for, the problem it solved and what you built.
ABOUT
Hi, I'm Junzhou 【猫猫】
I like problems that end in products.
I'm a 22-year-old developer interested in building useful digital products. My work spans websites, web applications, custom software, business systems, desktop and mobile applications, integrations and automation.
What I enjoy most is the practical part: understanding what someone actually needs, and then building a solution around it.
- AGE
- 22
- BASED IN
- Utrecht, NL
- STATUS
- Available
SKILLS
Tools of the trade
Technologies and tools I use across my work. It's an honest map of what I build with — not a claim to be an expert in every item.
- 01
Frontend
- HTML5
- CSS3
- JavaScript
- TypeScript
- React
- Next.js
- Vite
- Tailwind CSS
- Responsive design
- REST API integration
- 02
Backend
- Java
- Spring Boot
- Node.js
- REST APIs
- Authentication
- API integrations
- Server-side architecture
- 03
Databases
- MySQL
- SQL
- Relational database design
- Database integrations
- 04
Desktop / Software
- Java
- Desktop applications
- Windows applications
- .exe distribution
- API-connected software
- 05
iOS / Mobile
- iOS development
- Mobile UI/UX
- API-connected apps
- Mobile-first principles
- 06
Web / CMS
- WordPress
- WooCommerce
- Divi
- Elementor
- Custom WordPress
- Hosting
- DNS
- Domains
- Deployment
- 07
SaaS
- Authentication
- User accounts
- Role-based access
- Dashboards
- Subscriptions
- Stripe
- Admin systems
- 08
AI & Automation
- AI API integrations
- LLM integrations
- Workflow automation
- Process automation
- API-based automation
- 09
Google / Marketing
- Google Ads
- Google Analytics
- Tag Manager
- Conversion tracking
- Campaign setup
- Landing pages
- 10
Development tools
- Git
- GitHub
- Docker
- npm
- Maven
- VS Code
- AI-assisted development
PROCESS
How I work
- 01
Discover
Understand the idea, problem, requirements and goal.
- 02
Plan
Determine functionality, technology, architecture and design direction.
- 03
Build
Develop the product with regular testing and iteration.
- 04
Launch
Deploy and verify that the production environment works correctly.
- 05
Improve
Keep improving, maintaining or expanding the product where needed.
START A PROJECT
Have an idea?
Let's build it.
Tell me about your idea or problem. I'll read it properly and get back to you.