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Full-stack web applications
Customer-facing products with real users and real money flowing. Built to last past launch — and easy for the next engineer to read.
- TypeScript
- Next.js
- Postgres
- Stripe
Independent engineer in Munich. I build web apps, mobile apps, AI features and the quiet automations behind them — for founders and small teams who'd rather grow than meet about growing.
Most agencies sell you a slice and outsource the rest. I build end-to-end — the page a customer lands on through to the chatbot that closes the loop.
Real scope and pricing comes after a call — there are too many ways "build me an app" can mean different things.
hover anything ↙ it'll wiggle.
Customer-facing products with real users and real money flowing. Built to last past launch — and easy for the next engineer to read.
One codebase, two stores. Native feel.
FastAPI & Django services with honest data models.
GPT, Claude, RAG, agents — where the math earns its keep, never as theatre.
Connect the tools you already pay for. Save the team ten hours a week, every week.
Fast, clean, conversion-tested. Under two seconds LCP.
Inherited a half-finished app from a contractor or a no-code stack? I rewrite the rotten parts without breaking the rest.
A second pair of eyes, not a contract. One to four hours a week.
Small teams, real money moving through them, working software shipped on the date we agreed. The pattern doesn't change.
Inbound forms → enriched in n8n → scored by an LLM → assigned to the right rep. Four hours of admin a week, gone.
Replaced a slow funnel with a streaming multi-step that generates plans on the fly. Activation up 38 % on the next cohort.
Flutter app on a Python backend with Twilio for reminders. Saturday no-shows down 22 % in the first quarter.
Founder shipped a v0 with no auth, no tests, n+1 queries everywhere. Three weeks: same UI, half the code, ten times faster.
Boring where boring works, modern where modern earns its keep. I pick the stack to fit your team — not the other way round.
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From the first phone call to the day the support window closes. Everything paid is in writing; the rest is on me.
Thirty minutes on the phone. Free, no deck. Either we're a fit or I send you somewhere better.
A paid two-week sprint to scope the build. You leave with a plan and real numbers.
Six to twelve weeks of focused work. One demo every Monday. Source on your servers from week one.
Thirty days of bug-fixes after launch. Included — not an upsell. Optional retainer after.
“Roxhens replaced three contractors and shipped what they couldn't — in plain German.”
“We hired him for two weeks of cleanup. Nine months later he's still our engineer.”
“Took our automation setup from chaos to fourteen workflows. ROI in week three.”
Don't see yours? Email me — I read everything and reply the same day, usually.
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Thirty minutes on the phone. Free. No deck, no obligation. Either we're a fit or I send you somewhere better.