Built fast with AI — or rescued when your DIY app breaks.
Today, anyone can build software with AI tools. Whether the result actually works comes down to the experience behind it. I bring both together: the speed of AI with 30 years of software engineering.
You have an idea for a tool, an app, or an automation — but no developer on your team. First we calmly work out what the result should do and what it will cost. Then I build it in fixed, manageable blocks.
How new builds workYou or an AI tool built software that no longer runs properly, has security gaps, or that nobody understands anymore. First we take an honest look: what works, what doesn't — and what a repair would cost.
How the rescue worksAI tools make development faster and cheaper. To make sure the result holds up, I personally review every block — architecture, security, maintainability. You pay a fixed price per block and can pause anytime.
We discuss your idea, and you receive a plain-language specification plus a binding fixed-price quote. Credited towards your first block.
A clickable first impression of your idea — to show, test, and decide.
The first real version that works: core features complete, securely set up, ready for you to use.
More blocks as needed: new features, integrations, automations. No subscription, no minimum spend.
Block by block: every block is its own project at a fixed price. In between, you can pause or stop anytime — no notice periods, no pressure.
You built software with Cursor, GitHub Copilot, Bolt, or a similar tool. It kind of works — until it doesn't. The code behind it is often a mess: security gaps are likely, maintainability is zero. That's exactly what I'm here for.
I take an honest look at what you have — no jargon. You receive a plain-language report:
Then we fix what's broken: clean, secure, maintainable. You receive a binding fixed-price quote before I start — no surprises on the invoice.
Whether new build or rescue: a small, fixed entry point — a binding fixed-price quote — a complete handover. Every block follows this pattern.
You receive a binding fixed-price quote before work begins. No timesheets, no renegotiations.
AI tools make me fast. But every block is personally reviewed — with 30 years of experience in architecture, security, and maintainability.
In the end you receive the full source code, the documentation, and every credential. You stay independent — either way.
If your project would be cheaper or simpler without me, I'll tell you. Even if it costs me a job.
Newly built software is reviewed against the most common attack vectors (OWASP Top 10) before it goes live.
You talk to the person who writes your code. No middle layer, no ticket systems.
I'm Achim Hilwers — one developer, not a corporation. I've been building software for over 30 years, from backend services to complete web and mobile applications. You always talk to the person writing your code: me.
30 years leave a mark across many technologies. Feel free to ask — I've probably worked with it.
And if your software was built with something else: even better — I'll get up to speed. What matters is that the code is there.
A fixed price from €490. You receive a plain-language report with prioritized recommendations. If you continue straight into a rescue, the check is fully credited.
Then the code check is exactly right: it tells you honestly whether a repair is worth it or whether starting fresh would be cheaper. Either way is a serious result — no risk for you.
Yes. You receive the complete source code, the documentation, and every credential. I keep nothing back — you stay independent.
No. You get assessments and quotes in plain language. Technical details only if you explicitly want them.
AI tools make development significantly faster than the classic way. You receive binding timelines with the fixed-price quote.
No. Whether it was built with Cursor, Copilot, Bolt, a classic agency, or another developer: what matters is that the code is there. I'll get up to speed — and tell you honestly if a repair isn't worth it.
The software is yours. If you want, I'll keep looking after it — small scale, no subscription pressure. And if you want to do everything yourself, that's fine too.
Write me a few lines about what you need. I'll reply personally, and in a first conversation we work out which path fits you.
Write me a few lines about what you need — I'll reply personally, usually within one business day.