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AI development from Eisenach for small and medium-sized businesses

AI that lands in your business: automate processes, build software, win back time

I help small and medium-sized businesses in Eisenach and within 100 km to automate recurring workflows with AI, build custom software and connect their systems to AI assistants. Explained in plain language, implemented in small steps, with one person you can call.

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  • Over 20 years of software development
  • On site in Eisenach and within 100 km
  • Understandable solutions instead of buzzwords
René Fürstenberg

Services

Six clearly defined services that can be combined. Each page explains with examples what you get out of it.

AI process automation and optimisation

Invoices, orders, enquiries, reports: much of it is still handled manually. I analyse your workflows, find the steps with the biggest leverage and automate them with a mix of classic software and AI models.

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Software development with AI techniques

Many years of web development experience with Ruby on Rails meet modern AI tooling. The result: tailored applications that take weeks instead of months and include AI features where they deliver real value.

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Website development with AI

A website has to convince two audiences today: people and machines. I build fast, maintainable websites with clean structure, optimised for search engines and prepared so that ChatGPT, Perplexity and friends recommend your business correctly.

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MCP development: connecting AI assistants to your systems

The Model Context Protocol (MCP) is the open standard that lets AI assistants like Claude or ChatGPT access company systems: calendar, inventory, CRM, databases, line-of-business applications. I develop MCP servers that expose exactly the functions you want to expose.

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Data extraction with AI

Invoices, delivery notes, contracts, forms, product catalogues: valuable information sits in documents nobody wants to type up. AI-assisted extraction pulls it out reliably and hands it to your systems in a structured form.

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Prototype development with AI

You have an idea for a product, an internal tool or an automation but do not know whether it works? With AI-assisted development a real, usable prototype emerges in a short time, one you can use to convince customers, employees or investors.

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Examples

Three typical situations from small and medium-sized businesses and what AI makes of them.

AI process automation

300 supplier invoices a month, no more typing

A mailbox robot collects attachments, an AI reads invoice data, matches it against purchase orders and creates booking proposals. People review instead of typing.

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MCP development

"Can we deliver item X by Friday?" – straight from the smartphone

An MCP server exposes stock and orders to the AI assistant in a controlled way. Sales get answers at the customer's site without database access on the phone.

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Prototypes with AI

From thought to clickable application in three weeks

A landlord tests with a real prototype whether a regional booking platform finds partners before money flows into the full build.

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More examples on each service page

Offer

Three clear packages instead of open-ended day rates

You know upfront what you get and what it costs. The entry point is deliberately small.

AI potential analysis

The risk-free entry point

We look at your workflows together. You receive a clear, prioritised list: which processes are worth automating, what it costs and what you save.

  • 1–2 days, fixed price
  • On site at your company or remote
  • Result: a concrete roadmap with effort and benefit
Book an initial consultation

Pilot automation

One process, one measurable result

We automate one concrete process from the analysis – within a fixed scope and in close coordination. Within a few weeks you see what AI really delivers in your business.

  • Implementation in 4–6 weeks
  • Integration with your existing systems
  • Result: a running automation with measurable savings
Book an initial consultation

Ongoing support

Your automation in good hands

Your automations keep running, are monitored and continuously improved – at a predictable monthly price, without needing your own IT department.

  • Monitoring & maintenance included
  • Further development as needed
  • A dedicated contact person nearby
Book an initial consultation

How we work together

  1. 1

    Free initial consultation

    30 minutes by phone, video or on site in and around Eisenach. You describe what costs time or causes friction today. I tell you honestly whether and how AI can help.

  2. 2

    Analysis and concept

    I look at the workflow, the data and the systems involved. You receive a short concept with effort, benefit and risks in plain language.

  3. 3

    Implementation in small steps

    First a working prototype, then the build-out. You see results early and keep control over budget and direction.

  4. 4

    Rollout and support

    Training for your team, documentation, monitoring. On request I take care of maintenance and further development.

René Fürstenberg

About me

Independent software developer since 2002 – now focused on AI

For more than twenty years I have built software for craft businesses, mid-sized companies, startups and large corporations. Today I use that experience to make AI accessible to small and medium-sized businesses – no buzzwords, no hype, just workflows that work.

The difference to pure consultants: I don't just analyse – I build, integrate and operate myself. From the idea to the running system, everything stays in one hand.

On site in western Thuringia

My service area covers a radius of roughly 100 km around Eisenach – including:

Eisenach · Gotha · Erfurt · Mühlhausen · Bad Salzungen · Meiningen · Suhl · Bad Hersfeld · Fulda · Kassel

Beyond that, I work remotely for clients all over Germany.

More about the region

Data privacy from day one

Your data stays in Germany. Where sensible or required, AI models run locally on your premises – your customer data never leaves your company in the first place.

My full background

Career and projects

Positions and projects of recent years. Skills, work samples and the downloadable CV are on the full career page.

My full background

  1. 2024 – 2025

    Sapiens Germany GmbH · Hamburg / Remote

    Insurance

    CSS · Git · HTML · RSpec · Ruby on Rails · Jira · Fullstack · Docker · Hotwire · MSSQL

  2. 2022 – 2023

    Njiuko GmbH · Hamburg / Remote

    Git · PostgreSQL · REST-APIs · RSpec · Ruby on Rails · Pair–Programming · Jira · Teamwork · GitHub · Slack · Backend · Docker · Kubernetes · Hubspot-API · Heroku · JSON · Microservices

  3. 2022

    Combinaut, Inc. · Chicago (Remote)

    I worked as a Full-Stack-Rails developer and created a messaging system for patient contacts of a health care software.

    English · CSS · HTML · JavaScript · MySQL · RSpec · Ruby on Rails · Health Care · Backend · Customer Relationship Management · Docker

  4. 2021 – 2025

    ShowTruckMarketing · Eppertshausen (Remote)

    CSS · HAML · HTML · JavaScript · PostgreSQL · RSpec · Ruby on Rails · Sass · Stimulus.js · Twitter Bootstrap · Test Driven Development · Integration tests · Linux · GitHub · Fullstack · Business Process Management · Marketing · Docker · Turbo · Hotwire · Dokku

  5. 2021

    Cocoli GmbH · Berlin (Remote)

    It was my task to create a complete MVP for a furniture market place with Stripe payment connection and deploy it successfully.

    English · PostgreSQL · REST-APIs · RSpec · Ruby · Ruby on Rails · Sass · Stimulus.js · Test Driven Development · Furniture Marketplace · Fullstack · Stripe-Payments API · Stimulus JS · E-Commerce shop

  6. 2021

    Match-patch · Berlin (Remote)

    I changed the payments provider from Paypal to Stripe.

    MySQL · REST-APIs · RSpec · Ruby on Rails · Backend · Stripe-Payments API · Dating

  7. 2021

    Analyse & Konzepte immo.analytics GmbH · Hamburg (Remote)

    JavaScript · PostgreSQL · Ruby on Rails · Fullstack · Real Estate · JSON · BigData

  8. 2020

    New Work SE (Xing) · Hamburg (Remote)

    My part of work was to support the payment team.

    MySQL · REST-APIs · Ruby on Rails · Backend · Community · AMQP · Payments · Microservices

  9. 2020

    Zalando Marketing Services · Berlin

    I supported the Zalando-AI-Marketing team with maintaining an existing internal tool.

    English · PostgreSQL · Ruby on Rails · Fullstack · E-Commerce · Backend / Frontend · AWS

  10. 2019

    Whitebox GmbH · Remote

    PostgreSQL · RSpec · Ruby · Ruby on Rails · Test Driven Development · Unit Tests · Backend / Frontend · Robo Advisor / Fintech

  11. 2018 – 2019

    mobileJobs GmbH · Berlin

    Git · HAML · JavaScript · MySQL · RSpec · Ruby · Ruby on Rails · Sass · Scrum · GitHub · Backend · Job-Portal

  12. 2017 – 2018

    Xing AG · Hamburg

    JavaScript · MySQL · REST-APIs · RSpec · Ruby on Rails · Teamwork · Backend · Fullstack · Community · AMQP · Importer · GraphQL · JSON · Microservices

  13. 2016 – 2017

    Sonnen GmbH · Remote

    MySQL · REST-APIs · Ruby on Rails · Backend · Renewable energy · Salesforce

  14. 2016

    sofatutor GmbH · Berlin

    Backbone.js · Coffeescript · JavaScript · jQuery · MySQL · Ruby on Rails · E-Learning

  15. 2013 – 2016

    Zattoo · Berlin

    English · Backbone.js · Coffeescript · Git · HAML · JavaScript · jQuery · Marionette.js · MySQL · REST-APIs · RSpec · Ruby · Ruby on Rails · Sass · Twitter Bootstrap · Pair–Programming · Test Driven Development · Content-Mangement-Systems · Unit Tests · Teamwork · GitHub · Fullstack · Backend / Frontend · Set-Top-Box · Elasticsearch · Importer · Microservices

  16. 2012 – 2019

    Xaa-Systems · Berlin See the source code

    Git · HAML · MongoDB · MySQL · NoSQL · REST-APIs · Ruby · Ruby on Rails · GitHub · Content Management System · Importer

  17. 2009 – 2013

    Viacom - Nickelodeon - Viva - MTV Networks · Berlin

    German (native) · English · Backbone.js · Coffeescript · CouchDB · CSS · Facebook-APIs · Git · Google-APIs · HAML · JavaScript · jQuery · MongoDB · MySQL · NoSQL · REST-APIs · RSpec · Ruby · Ruby on Rails · Sass · Twitter-APIs · Pair–Programming · Test Driven Development · Jira · Unit Tests · Teamwork · GitHub · Backend · Fullstack · Backend / Frontend · Content Management System · Elasticsearch · Importer · Microsites · Authentication-Plugins Microservices · Website

  18. 2008 – 2018

    Motorradfreunde.com · Berlin See the source code

    Coffeescript · Marionette.js · REST-APIs · Ruby on Rails · Community

  19. 2008 – 2009

    Moviepilot · Berlin

    Git · HAML · HTML · MySQL · RSpec · Ruby · Ruby on Rails · Sass · Pair–Programming · Scrum · Test Driven Development · Unit Tests · Teamwork · GitHub · Community

  20. 2003

    KaDeWe - Feinschmecker-Etage · Berlin

    CSS · HTML · MySQL · Content Management System · E-Commerce shop · PHP

  21. 2002 – 2003

    arun - Werbung · Berlin

    Website · PHP · Macromedia Flash

Getting started

Three questions that start everything

That's all the initial consultation needs. If you can answer these three questions – even roughly – we will both know within 30 minutes whether automation pays off for you.

  1. 1

    Where in your company is the most time being lost right now?

  2. 2

    What does that cost per month – in hours or money?

  3. 3

    What has already been tried to solve it?

Discuss your answers – free of charge

Contact

Let's talk about your workflows

A short initial consultation costs nothing and quickly shows whether automation pays off for you. Give me a call or send me a message.

Request a consultation by e-mail