reference / holiday home
Scroll zoom.
The home page of Landhaus am Büchelstein opens on an evening in the garden. As you scroll, the view glides through the glass into the conservatory – and back along the same path.
IT at the core.
The big picture
in view.
Websites, AI solutions and IT – from the first idea until it’s up and running.
WebAIIT
Websites for small businesses
Your website.
At a fixed price.
A clear online presence for your business. Personally designed and looked after – for businesses in Lower Bavaria and beyond. On site or remotely.
View packages & workWebsites from€590one-time fixed price · two packages to choose from
On request: hosting & technical operation from €29/month. Domain and email billed separately.
All prices are final prices. As a small business under § 19 UStG (German VAT Act), I do not charge VAT.
services
What I do.
Web & applications
- Websites & relaunches
- Logo & brand identity
- Web tools & booking systems
AI & automation
- AI agents & assistants
- Reading requests & documents
- Connecting your software
IT & support
- Hardware, networks & workstations
- IT support & backups
- Hosting, updates & maintenance
ai agents
AI agents at work.
An AI agent doesn’t just answer questions, it completes work steps: it reads, checks, enters and prepares – following clear rules, with your team signing off.
- agent team
A team of agents
Specialized agents split a task: one researches, one checks, one writes. They share one memory and keep each other in check.
ExampleOne agent drafts the reply to a customer request, a second checks it against the price list and contract terms.
- background
Working around the clock
Agents keep working on a schedule when the office is empty: matching data, checking systems, flagging anything unusual.
ExampleAt seven in the morning, a summary of the night is in your inbox – with everything that needs attention.
- quotes
From conversation to quote
A call note, email or voice message becomes a finished draft in your template – with items and prices from your own data.
ExampleAfter the phone call, the quote is ready for approval instead of being typed up in the evening.
- inbox
An inbox that sorts itself
Requests, invoices and attachments are read, routed and checked for completeness. The agent asks for missing details and matches documents against your software.
ExampleIf an invoice differs from the order, the agent flags the line and puts the documents side by side.
- knowledge
Ask your own knowledge and data
Query manuals, procedures, orders or spreadsheets in plain language. Answers come with a source, figures with how they were calculated.
ExampleWhich services were requested most in the third quarter – and where is the current rule for the holiday handover?
- software
Agents that operate your software
Through interfaces, the Model Context Protocol (MCP) or the browser, the agent works directly in calendars, inventory systems, shops or web portals – even where there is no interface.
ExampleA confirmed booking goes straight into the calendar, the customer list and the invoice template.
How I use agents
- Your team signs off on anything with consequences
- Tested on real cases before launch
- Data under control: cloud or local on your own hardware
- Connected to the software you already use
projects
Spotlight.
Own project / 469HzThe tech behind 469Hz.
A custom ticket shop with QR check-in. Plus room scans, AI-assisted 3D visualizations and social media.
View project Healthcare · Together with Pflegedienst KammererBorn in practice. Made for everyday work.
Software for care services, medical practices and other providers: AI-assisted route planning, automated workflows and consistent processes.
Software & AI / In development AI / Own systemAgents with a shared memory.
Several AI agents on different machines share one knowledge base that is maintained automatically around the clock.
AI agents at workClient websites
about me
Rainer Heitzmann
I’m Rainer Heitzmann from Hengersberg. My work brings together design, web development and system administration – from the first concept to the technical implementation.
Heitzmann is my family name. It builds on HeiTec24, my father’s business name, which I also used when I first started working.
I design brand identities and websites, and I build web tools, automations and AI assistants for specific workflows.
Together with Pflegedienst Kammerer, I develop software and AI-assisted applications for healthcare.
I try out new tools early, especially in AI: I run my own system of several AI agents and language models on in-house hardware. What proves itself in experiments finds its way into my projects – with an eye for what actually helps.
- Location
- Hengersberg, Lower Bavaria
- Focus areas
- Web, AI and IT
contact
What would you like to build?
A website, an AI assistant, an automation or interest in healthcare software? Briefly describe your project or how you’d like to work together.
Not at my desk right now.
- phone
- +49 151 40729455Mon–Fri, 07:00–18:00 (German time)
- rainer@heitzmann.digitalUsually a reply the same day
- Send a quick messageFor quick questions
- address
- Am Mühlfeld 494491 Hengersberg, Germany