Complex systems,cleanly built,delivered on time.
No studio, no agency — a small team of experienced engineers. We build fully custom systems instead of off-the-shelf kits: frontend, backend and admin panel, tailored precisely to your workflows.
From production, not from the pitch deck.
Numbers from systems running live with clients today.
No off-the-shelf CMS. We build your own.
No WordPress, no Typo3, no Shopify out of the box. Instead of forcing your workflows into a ready-made system, we build the system around your requirements — frontend, backend and admin panel, tailored precisely to your processes. No plugin bloat: lean, secure and lightning-fast.
sued-fenster.de — made-to-measure windows
A fully custom system instead of a template site — three cleanly separated layers:
- LandingNext.js · React · Tailwind
- BackendFastAPI · PostgreSQL · Celery
- AdminReact · Material UI · RTK Query
The client edits everything themselves — sections, copy, photos, prices — quickly and comfortably, entirely without us.
Three things we guarantee. Measured, not promised.
What is taken for granted in German engineering, we apply to software too.
Systems that hold under load
Architecture for clear failure boundaries and repeatability. Not a prototype that falls apart in production, but code that is still maintainable in two years.
Code your team can take over
Type-safe, tested, documented — following clear, recurring architectural patterns and consistent conventions. We leave a clean codebase without workarounds that you can carry on without us. No dependency on a black box.
Delivered when promised
Firm cuts into small, shippable units. You see a working build every week, not status slides. Delay becomes visible before it becomes a problem.
Modular and reusable
Self-contained feature modules instead of tangled monoliths. Proven building blocks get reused instead of starting from zero every time — which noticeably lowers effort, price and delivery time.
Every feature against tests
A strict test gate (around 100 end-to-end tests per product) catches errors before release. Fast here means fast and provably correct.
AI-assisted feature cycle
A disciplined cycle from feature to test, AI-assisted and human-reviewed. The acceleration is in the process; the responsibility stays with us.
Our stack — and where we deliberately say no.
Focus is a decision. Depth over breadth keeps quality where we are genuinely good.
What we deliberately don't take on
- / Pure pixel-pushing without technical substance
- / Throwaway prototypes without tests or maintainability
- / Arbitrary stacks by trend instead of by fit
- / Oversized projects without a clear technical core
- / Hourly billing without a deliverable result
Where we deliver
- + Complex architecture and demanding integrations
- + Multi-tenant SaaS and micro-frontend systems
- + Native mobile apps: iOS (Swift) and Android (Kotlin)
- + AI and LLM integration into real products
- + Product development from architecture to release
Frontend
Backend
Mobile
Data · Infra · Method
Depth over breadth: better to master a few stacks than half-know many.
You have a technical problem. We'll see whether it fits us.
Not a sales call, but a technical first conversation. 30 minutes in which we assess your project and tell you honestly whether we're the right team for it.