You will get a production-ready MVP web app built with React and Supabase
Project details
I build MVPs for founders who need a working product, not a prototype. My stack is React, TypeScript, Tailwind, and Supabase - the same tools I used to build my own SaaS (Opus Studio), which has paying users in production right now.
You'll get a real app: auth that works, a database with proper security policies, a clean UI, and deployment to Vercel or Cloudflare. If you need Stripe payments, API integrations, or AI features, I can handle those too.
I'm a solo developer based in Germany, so you're talking directly to the person writing the code. No agencies, no handoffs, no project managers in between. I scope tightly, communicate often, and ship on time.
You'll get a real app: auth that works, a database with proper security policies, a clean UI, and deployment to Vercel or Cloudflare. If you need Stripe payments, API integrations, or AI features, I can handle those too.
I'm a solo developer based in Germany, so you're talking directly to the person writing the code. No agencies, no handoffs, no project managers in between. I scope tightly, communicate often, and ship on time.
Programming Languages
HTML & CSS, JavaScript, TypeScriptCoding Expertise
Cross Browser & Device Compatibility, Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$300
|
Standard
$1,200
|
Advanced
$2,500
|
|---|---|---|---|
| Delivery Time | 5 days | 14 days | 21 days |
Number of Revisions | 2 | 3 | 5 |
Number of Pages | 3 | 7 | 12 |
Design Customization | |||
Content Upload | - | ||
Responsive Design | |||
Source Code |
Frequently asked questions
About Felix
Fullstack Developer | React, TypeScript, Supabase, Tauri | SaaS & AI
Karlsruhe, Germany - 11:53 am local time
I'm currently running a small SaaS for artists (Opus Studio) built with Tauri, React, and Supabase, so I've dealt with the full lifecycle: database design, RLS policies, R2 storage, Stripe subscriptions, email flows, and getting real users through onboarding. I've also built standalone tools like a mail merge app and an invoicing tool, both with a privacy-first approach.
On the AI side, I integrate LLMs into production apps - not demos, actual shipped features. I've worked with OpenAI, Claude, and local models, and I'm comfortable with things like vector search (Cloudflare Vectorize), embeddings, and building agent-based workflows.
Other things I can help with: Tauri desktop apps (cross-platform, Rust backend), Sanity CMS setups, Vite/React sites, and Supabase security audits. I hold a CompTIA Security+ cert, so I tend to think about auth and data protection by default.
Based in Karlsruhe, Germany. Native German, C2 English. Available for both short gigs and longer projects.
Steps for completing your project
After purchasing the project, send requirements so Felix can start the project.
Delivery time starts when Felix receives requirements from you.
Felix works on your project following the steps below.
Revisions may occur after the delivery date.
Project scoping
Review your requirements, define database schema, agree on pages and features for the MVP.
Core build
Set up Supabase, auth, database with RLS, build React frontend with Tailwind, connect API layer