Hi, I'm Kim ku

Full‑Stack & Mobile Developer

I build modern, interactive web and mobile experiences using cutting‑edge technologies.

View my work Contact me Book a call Download my resume

Web Development

Tailored solutions for your needs

Responsive Design

Optimized for every device

Performance

Fast and smooth applications

Solid Backend

Robust, secure APIs

Databases

Optimized and scalable

UI/UX Design

Intuitive user experiences

Lighthouse Performance

Indicative scores measured locally. Targets: LCP < 2.5s, TBT < 200ms, CLS < 0.1.

90+
Performance
95+
Best Practices
100
Accessibility
Measured with Lighthouse. Screenshots and details available on request.

About me

Developer

I'm passionate about web development

With a broad portfolio, I've worked on projects ranging from simple landing pages to complex web and Android applications. My approach blends creativity with technical rigor to deliver optimal solutions.

Experience

3+ years in full‑stack web development

Projects

30+ successfully delivered projects

My philosophy

I believe in user‑centered development, where every line of code impacts the final experience. Performance, accessibility, and maintainability are at the core of my practice.

"Code is an art form, where logic meets creativity."

My skills

Frontend

React
JavaScript
HTML5
CSS3
SASS
Tailwind
Flutter
Flet

Backend

Node.js
MySQL, PostgreSQL
Python
Firebase & Supabase
REST API
GraphQL

Tools

Git
GitHub
Docker
CLI
Dreamflow
Firebase Studio

Skill levels

JavaScript/TypeScript 75%
React/Next.js 75%
Python/Django 75%
Node.js/Express 85%
Databases 80%
UI/UX Design 75%

My contributions 2025

Overview of my 2025 GitHub contributions.

2025 contributions of kimku003
Main profile: kimku003
2025 contributions of joykim003
Alternate contributions: joykim003

My recent projects

Findpharma
Fullstack

FindPharma

Findpharma is a web application that allows you to search for open health centers or pharmacies in a specific region. Simply enter a city name, postal code, or entire commune name to filter open pharmacies or health centers in that region.

React + Vite Typescript Supabase
View project
Digimarket
Fullstack

Digimarket

Digimarket is a complete marketplace for selling, buying and promoting digital products and services.

React + Vite (Typescript) PostgreSQL
View project
Wanderlust
Fullstack

Wanderlust

Wanderlust is a complete travel platform for planning and tracking your journeys.

React Gemini 2.5 & 3.0
View project
AI Smartlink
Fullstack

AI Smartlink

AI‑powered smart link generator with built‑in analytics.

React Node.js PostgreSQL
View project
Slidecast
Fullstack

Slidecast

Presentation‑sharing platform with session management and payments.

Next.js Tailwind Stripe
View project
Swiftride
Frontend

Swiftride

On‑demand ride matching demo. A simplified clone of Uber’s booking flow, letting users request a simulated ride and receive mock driver details generated via the Gemini API.

Next.js Tailwind Supabase
View project
AI CV Builder
Fullstack

AI CV Builder

A real-time resume builder. Pick from professional themes, edit your details, and download a print-ready resume in seconds. Designed for modern job seekers to create standout resumes with ease.

React Tailwind
View project
Sunlight
Frontend

Sunlight

Showcase website for Sunlight Photography agency.

View project
Benin Data
Frontend

Benin Data

Interactive dashboards and reports. Previews available.

View project
Socialverse
Frontend

Socialverse

Experimentation with modern social features.

View project
Project 1
Fullstack

E-commerce platform

A complete e-commerce solution with secure payments and inventory management.

React Node.js
Problem: SMB lacked a reliable online channel; frequent stockouts; low conversion.
Solution: React frontend + Node/Express API, persistent cart, Stripe, real-time stock.
Impact: +32% conversion in 6 weeks, TTFB -45%, cart abandonment -20%.
View project
Project 2
Frontend

Weather App

Real-time weather with 7-day forecasts and geolocation.

Vue.js REST API Chart.js Geolocation
Problem: Unclear UI; slow on low/mid-range mobile.
Solution: Lazy-loaded data/charts, caching, skeletons, offline PWA.
Impact: LCP -55%, API errors -30%, day-7 retention +18%.
View project
Project 3
Backend

Project management SaaS

Secure platform for project management.

React Typescript PostgreSQL(Supabase)
Problem: Poor multi-project visibility; inconsistent permissions; high costs.
Solution: RBAC, Kanban/Gantt views, real-time notifications, audit log, quotas.
Impact: MTTR -40%, onboarding -60%, infra costs -25%.
View project
Project image
Frontend

Legal assistant

Legal app for document management and consultations.

Vue.js API REST Chart.js Geolocation
View project
Project image
Fullstack

Story Weaver

An end-to-end solution to write and publish books in EPUB and PDF.

React Node.js MongoDB Stripe
View project
Project image
Frontend

Social network API

Social API to share posts and interact with other users.

Django ninja API REST PostgreSQL
View project
See more projects

Contact me

Let's work together

Whether you have a project in mind or just a question, feel free to reach out. I’m always open to new opportunities and collaborations.

Location

Seoul, Korea

Follow me