kaufmeinewebsite.de · kontakt@kaufmeinewebsite.de · open for client projects and full-time roles
_{🇩🇪 Full-Stack-Entwickler aus Deutschland. Web-Apps, Shops, Bots und Spiele, die live laufen und getestet sind.}

Every project below is running right now. Click a picture to try it.

Orbital Atlas: an atlas of the solar system, computed rather than drawn. Newtonian N-body orbits from NASA/JPL state vectors (Earth stays within ~1 km of JPL's ephemeris over ten years), a powers-of-ten zoom from the Milky Way down to planetary cores, labelled to-scale cutaways and nearly 25,000 real asteroids on the GPU. Every view says whether it is true scale or illustrative. TypeScript three.js GLSL Vite NASA/JPL data ▶ Open the atlas · Source
Relais: AI CRM. Leads from Facebook, Instagram and Google Ads in one inbox; the AI answers when no human replies within five minutes, grounded in your knowledge base. Next.js 16 Better Auth LLM API pgvector ▶ Live demo, one click	VAULT: self-hosted store for digital products. Five payment providers, fraud scoring, one-command Docker install. Next.js 16 Prisma PostgreSQL Docker ▶ Live demo · Showcase
NEXUS: Discord bot with a panel builder inside Discord and a web dashboard. Tickets, moderation, logging, roles. TypeScript discord.js Components V2 SQLite ▶ Try the demo · Showcase · beta 01.10.2026	TOTES SIGNAL: co-op zombie shooter in the browser, rebuilt for phones. Fork of Nazi Zombies: Portable (open source, GPL-2.0). The game, engine and art are the NZ:P Team's work. I built the complete mobile version, the settings, German localisation, accounts, browser co-op and bot teammates. Work in progress. FTEQW · WebGL QuakeC JavaScript WebRTC ▶ Play · Source · Credits · Roadmap
Mundo: pre-seed concept for a fair voice-data app. Five soft 3D characters react to your voice, and a read-aloud demo measures your take, all inside the browser: nothing is uploaded. Every market figure is sourced; users and revenue are honestly zero. React Three Fiber Web Audio GSAP ▶ Try the demo · Source	Stiloase: vintage shop where every piece is one of a kind. Bag reservation, email-code accounts, every flaw photographed. Next.js 16 Better Auth Tailwind 4 ▶ Visit

_{Also live: Fruit Slash · RECEIPTS · Kopfkino · and the platform that hosts them all.}

Working prototypes. Client work comes first, so these are on hold; each one resumes with budget or a first paying customer.
_{🇩🇪 Funktionierende Prototypen, vorerst pausiert. Weiter geht es, sobald Budget oder erste Kunden da sind.}

Skirmio: five io-style browser games, playable against bots. Paused: accounts, shop and real-time multiplayer. Showcase & roadmap

MapToWeb: turns a Google Maps listing into a finished website with an editor. In development, launching as our own product. Showcase & roadmap

Rufo (KI-Rezeption): digital receptionist for trades and practices; sorts German requests into clean leads. Text trial built; phone line not connected yet. Showcase & roadmap

• Tests decide what ships. Guard tests pin whole classes of bugs, and every guard is made to fail on purpose once before it counts.
• Measured in a real browser: phone widths, keyboard only, the built CSS, not just the source.
• Bilingual by default (EN / DE), privacy-aware (GDPR), accessible.
• AI pair-programming, openly. I build with an AI coding assistant; commits it co-wrote say so. Design, review and responsibility stay with me.

Building Keel, an AI SaaS MVP planner: type any product idea, get a scoped plan and the foundation to build it on.