Jan-Thorge
Kupper
Fullstack Developer.
Fullstack Developer.
Hej! I'm Jan, a Fullstack Developer in the making. After relocating from Germany to Sweden in 2023, I now study at Chas Academy, specializing in Next.js and React while expanding my backend expertise with Express and PostgreSQL to build fullstack solutions.
I believe in two core principles: “Teamwork makes the dream work” and “Never stop learning.”
For me, great work comes from a balance of collaboration and autonomy, anchored by clear communication. I love working in teams and greatly value exchanging feedback, while also enjoying the challenge of independent problem-solving to deliver results.
What excites me most about web development is the perfect intersection of creative freedom to craft clean, elegant designs and solving the technical puzzles that bring them to life through code.
Technologies I work with
Frontend:
HTML5 & CSS3
Next.js
React
Tailwind
Backend:
Next.js (App Router)
Express.js
PostgreSQL
Languages:
JavaScript (ES6+)
View this portfolio website on GitHub
Ansökningshjälpen
2025
An AI-powered tool developed in cooperation with Lidol, a Gothenburg-based organization focused on accessible communication systems. It is designed to assist people with disabilities in navigating the application process for workplace accommodations (arbetshjälpmedel) through Försäkringskassan. The solution provides step-by-step guidance for accurately completing application forms and supports applicants in preparing for interviews with Försäkringskassan representatives. The goal is to reduce rejection rates by offering clear and accessible support throughout the process.
Big Stacks
2025
Developed an online banking prototype using Next.js App Router (frontend & backend) with Supabase for database management. Features include account creation, money transfers, token verification, real-time balance tracking, and transaction history visualization.
ChasGPT
2025
An AI-driven chatbot modeled after ChatGPT, using Google's Gemini AI teaching me how to integrate an AI API for real-time interaction. Features include a simple, sleek design and being able to go back to previous conversations through the side menu.
MediaDB
2025
Developed a database for movies and TV series with search and tracking features as part of a group project. I learned how to use dynamic routing and improved my understanding of website architecture.
Weather App
2024
Created a web app to search for locations worldwide and display real-time weather along with a 7-day forecast. Built entirely with vanilla HTML, CSS, and JavaScript, focusing on fundamental web development principles before transitioning to frameworks and libraries.