Software development from Kiel, Germany
Custom software and Magento services from Kiel.
I build tools and automations for small and medium-sized businesses, look after shops on Magento 2 and Magento 1, and support agencies that want to outsource work.
AI-assisted development, reviewed and tested by me.
15+ years of experience with online shops and web applications.
Magento 2 and 1 Current shops and those that cannot migrate yet.
AI-assisted Built faster, every change reviewed by me.
Direct line You talk to the person who writes the code.
Services
Software and automation
From a small internal tool to the application your team works with every day. And interfaces so nobody has to copy data from one system to another by hand.
- Internal tools for data entry, reporting and approvals
- Imports, exports and interfaces to ERP and accounting
- Customer portals, calculators and configurators
Magento services
Development, updates and maintenance for small and medium-sized shops on Magento 2. Together with Mage-One, I keep Magento 1 shops secure and running.
- Security patches soon after release
- Custom modules and integrations with payment, shipping and ERP
- Magento 1 with patches and current PHP versions
- Managed hosting if you want it
For agencies
If you are short of capacity or Magento experience, I take on work in the background: single tickets, maintenance contracts or whole projects.
- Work to your specifications and processes
- Getting up to speed with existing code, older shops included
- No direct contact with your clients unless you want it
AI-assisted, not "vibe coding"
I use AI tools when programming. They make me considerably faster, and I pass that time saving on through my prices. That makes even small projects affordable.
Taking over code I do not understand myself is out of the question. AI is a tool; the responsibility stays with me.
- Architecture I decide how a solution is built, not the tool.
- Review I read, understand and test every change before it goes live.
- Security I check access rights, customer data and dependencies myself.
- Stability Updates go to staging first, then live, with a backup and a way back.
From my security log
I follow security advisories for Magento, PHP and server software and write down what needs to be done, with sources. A selection:
2026-11*sshole: OpenSSH vulnerability on Alpine Linux2026-10PHP: two critical vulnerabilities, CVE-2026-109618 and -1096192026-03PolyShell: file upload vulnerability in Magento 22025-10The Red Hat incident: what it means for Magento shops2025-09SessionReaper, CVE-2025-542362025-06Security update APSB25-50, CVE-2025-471102024-06CosmicSting, CVE-2024-34102
How I work
Enquiry
Tell me what it is about. A few sentences are enough, we will sort out the rest in a call.
Assessment
I look at what is already there and tell you what is urgent, what can wait and what I would advise against.
Proposal
You get a written quote with a fixed scope. I start as soon as you agree.
Delivery
I test before going live and stay available afterwards, for the next update too.
Who is behind it
I am Sebastian Keutmeier. maxanoo is my software development and Magento service, part of Sebastian Keutmeier – IT Consulting in Kiel, Germany.
Your enquiry does not end up in a ticket queue but with me. I write the code myself and know the systems I look after.
- Based in Kiel, Germany
- Experience 15+ years
- Magento 1 with Mage-One
- Languages German, English
- This website no cookies, servers in Germany
From the blog
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On Linux systems with musl and without PAM, OpenSSH accepts any overlong password for certain accounts. Who is affected, how to check and what to do now.
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On 21 October 2026 PHP fixed two critical vulnerabilities (CVE-2026-109618, CVE-2026-109619). Which versions contain the fixes and what Magento shops should do now.
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PolyShell lets attackers upload files to Magento shops without logging in. What is affected, how to check your shop and which updates fix the vulnerability.
What can I help with?
A process that costs you time every week, a Magento shop that needs updates, or a project your agency lacks the capacity for right now: describe it in a few sentences. I will get back to you with an honest assessment.
Prefer email: contact@maxanoo.com