For businesses
AI-driven solutions
built to scale
I build custom AI-powered business systems for small businesses drowning in manual work — so the owner can run leaner, move faster, and stop paying people to do what intelligent software can handle. I build it with you, not just for you.
Track 01
Websites & apps
The public-facing side of the business — the things a customer actually touches, built to load fast and be edited without a developer.
- Landing pages
- A single page with one job: get the visitor to do the thing. Fast, measurable, and quick to change when the campaign changes.
- E-commerce
- Storefronts with the admin side taken seriously — products, orders and stock managed by your staff, not by a developer on a retainer.
- Portfolio & brand sites
- Sites for people whose work has to be the argument. Considered typography, real motion, and content you can update yourself.
- Full-stack web apps
- Dashboards, internal tools and customer portals — accounts, permissions and data, with AI agents built in where they genuinely help.
- Mobile apps
- Cross-platform apps in Flutter and React Native, shipped to both stores, on a serverless backend that costs nothing while idle.
Track 02
AI agentic systems
The operational side — software that does the repetitive work a person is currently doing by hand, grounded in your live business data.
- Agentic operating systems
- One system running orders, inventory, client records and workflow, with AI agents working inside it rather than bolted on beside it.
- Support & operations agents
- Agents that answer from what is true right now — live stock, real prices, actual order status — instead of inventing plausible numbers.
- Workflow automation
- The handoffs that currently live in someone’s inbox: quotes, follow-ups, stock alerts, reporting. Automated, logged and auditable.
- Integration & data plumbing
- Connecting the tools you already pay for so they stop needing a human to copy data between them.
Evidence
Shipped, and running
A handmade-crafts retailer needed to stop running products, orders and materials through spreadsheets and messages. DeLightfully Made 818 is the storefront and the admin system behind it — built solo, live now, and it removed about twenty hours a week of manual coordination.
Regent is a local-first AI assistant with a Rust core, and it is MIT-licensed and open source — so the architecture decisions, the eval suite and all 504 commits are there to read rather than to take my word for.
nesko.app is the landing page for Nesko, the AI task manager live on Google Play — the product story and its five-phase method, written to explain the approach before asking anyone to install anything.
References
What people say
“It's easy to work with him. He asks lots of related questions and really listens to understand what we want and our vision. When he delivers, he did more than what we expect. Overall he is nice to work with.”
D.C. — Client “This app (Nesko) makes my schedule more easier to do and it organize it well.”
J.R. — User, Nesko “I worked with Rainer on several of his projects — feature tweaks, UI/UX improvements, and quality assurance. He is receptive to feedback and actively looks for ways to improve, and he puts in the extra effort to make his work functional, polished, and reliable. I would confidently recommend him to anyone looking for someone dependable, motivated, and committed to delivering high-quality results.”
L.P. — Developer “Based on his skills and expertise, he suggested different options, alternatives, and improvements for the elements we planned to add. He was able to innovate and adapt our ideas and design preferences, resulting in a better overall website. I would definitely recommend him to others because he is professional, collaborative, and delivers quality work.”
R.M. — Client
How it runs
Process
01
Discovery
What the business actually needs, which is usually not what the brief says.
02
Build in sprints
Collaborative, not a black box. You see a working prototype every sprint, so nothing is a surprise at the end.
03
Deploy
Live infrastructure, real monitoring, real security defaults — and a walkthrough of all of it.
04
Support & handover
Two weeks of post-launch support, documentation and admin tooling, so the work outlives the contract.
Every build is scoped to the business, so cost follows scope, timeline and how many systems it has to talk to. The quickest way to a real number is a short call about what is actually slowing things down.
Fit
Who I do not work with
Worth saying plainly, because the projects that go wrong are usually the ones where this was clear from the start and got ignored. I do not take on clients who:
- Dictate the tech stack without a reason behind it
- Set timelines by pressure rather than by scope
- Ask for corners cut that the business will pay for later
- Treat a builder as a vendor rather than a partner