Email Address
hanggesimida@gmail.com

WEIHANG
LI

I build fast, modern digital products that drive business growth, available for freelance projects worldwide.

Profile photo

Available For

Work

Oct 10

WHAT I DO /

(Services)
I specialize in building fast, reliable, and user-friendly full-stack digital solutions. I bridge the gap between complex ideas and market-ready products that drive real business value and long-term growth.
(01)

Full-Stack Development

I build end-to-end solutions, from intuitive frontend experiences to robust backend systems. Focused on web development and leveraging modern tech to build scalable, real-world applications.

01React, Vue, Tailwind CSS
02Node.js, Spring Boot
03Git, Docker, Vercel, Alibaba Cloud
(02)

Optimization

I build systems that scale reliably, applying solid engineering principles to keep applications fast, stable, and future-ready.

01Data Structures & Algorithms
02DBMS, OOP, OS Fundamentals
03Scalable systems & data pipelines
(03)

AI-Assisted Development

I use AI tools to speed up development while maintaining solid engineering standards—supporting everything from rapid prototyping to scalable, well-structured systems.

01Cursor, Codex, Claude
02Rapid prototyping & iteration
03Code quality & review
SELECTED WORKS /
(PROJECTS)
Thoughtfully crafted digital experiences that blend utility and aesthetics into something functional, memorable, and refined.
My Profolio
Modern Portfolio WebsiteMy Profolio
Next.jsFramer Motion2026

Overview

A self-designed single-page portfolio that presents full-stack craft and selected work to a global audience. Built with Next.js for localized routing and a contact-form email loop, plus GSAP / Motion / Lenis for smooth scroll and entrance motion.

Keyboard Designer
Open Source ToolKeyboard Designer
Next.jsThree.js2026
Visit siteGitHub

Overview

An open-source keycap designer that runs in the browser. Pick a layout, tune colors, place artwork, preview in real-time 3D, and export PNG, SVG, JSON, or production jigs. No sign-up; designs stay in your browser.

Hynel Energy
SaaS PlatformHynel Energy
VueFull-stack2025

Overview

An energy-market analytics and price-forecasting SaaS spanning dashboards, CMS, and subscription payments. Delivers multi-dimensional time-series and map visuals with ECharts and MapLibre, plus JWT / RBAC auth and an Alipay subscription loop.

Vehicle Search Script
Desktop ApplicationVehicle Search Script
ElectronTooling2025

Overview

A desktop vehicle-search tool that batch-imports plates, runs multi-threaded parking lookups, and pushes Telegram alerts on hits. Supports Selenium and pure-HTTP scrapers, proxy pooling with traffic controls, and live status over WebSocket.

DEVELOPERDESIGNERCREATOR/

Skills
  • JavaScript
  • TypeScript
  • Java
  • Python
  • Dart
  • SQL
  • Vue
  • React
  • Next.js
  • Node.js
  • Express.js
  • NestJS
  • Electron
  • React Native
  • Spring Boot
  • Three.js
  • ECharts
  • Tailwind CSS
  • Framer Motion
  • GSAP
  • Git
  • Apifox
  • Docker
  • Vercel
  • Alibaba Cloud
  • Tencent Cloud
  • Prisma
  • PostgreSQL
  • MySQL
  • SQLite
  • Redis
About image
I'm a full-stack developer and designer dedicated to crafting high-performance digital products that bridge the gap between complex logic and fluid design.
(About Me)

Leveraging a versatile stack from React and Node.js to Spring Boot and Python, I build scalable applications that thrive under pressure. Whether it's Web platforms, Mobile apps, or Desktop software, I focus on delivering seamless, end-to-end solutions for startups and businesses.

I believe in the power of micro-interactions and refined motion. My approach is simple: engineer for reliability, design for impact, and obsess over the details that elevate a product from functional to exceptional.

Let's Make It Happen

Have a project in mind?