STONITEX
DE EN
Request assessment

Modernise your data platform with Microsoft Fabric.

I migrate data warehouses to Microsoft Fabric and automate processes with AI agents, faster and cheaper than the status quo.

Request assessment View services
15+

years of data engineering in SQL Server and data warehouse environments

80%

lower infrastructure costs after migrating a logistics provider's DWH to Fabric

16hrs

saved per week by digitising a skilled-trades business

Services

Services that make a measurable difference.

From a Fabric assessment to a finished tool. You choose the entry point, I deliver the result.

Fabric migration and Medallion Architecture

Your existing data warehouse, migrated to Microsoft Fabric. With a clear architecture instead of accumulated sprawl.

  • OneLake, Delta Lake, Medallion Architecture (Bronze, Silver, Gold)
  • Migration from SQL Server, SSIS and SSAS to a modern cloud platform
  • Reference: 80% lower infrastructure costs, data preparation cut from 7 hours to under 1 hour
GOLDanalysis-ready, for Power BI and AI
SILVERcleansed and joined
BRONZEraw data from all sources
Request assessment

Data governance and security

So your data does not just flow, but stays controlled and traceable.

  • Design and implementation with Microsoft Purview
  • Role, access and audit concepts

AI agents and workflow automation

Automated processes instead of manual work. With n8n and AI agents that work directly on your data.

  • End-to-end workflows with n8n, REST APIs and Notion
  • Integration into existing systems instead of new silos

Full-stack data tools and dashboards

Custom tools instead of spreadsheet chaos. From the database to the finished interface.

  • Built with FastAPI, Supabase/PostgreSQL and React
  • Power BI dashboards and reports (DAX)

Results, not promises.

Enterprise data platform or skilled-trades business: I digitise whatever is really slowing your company down.

Shipping and logistics provider, Germany
80%

lower monthly infrastructure costs

Enterprise DWH migrated to Microsoft Fabric

Starting point
A grown SQL Server data warehouse with SSIS pipelines, high operating costs, and a daily data preparation run of 7 hours.
Solution
Migration to Microsoft Fabric with Medallion Architecture, OneLake, Delta Lake and Python notebooks. Governance concept with Microsoft Purview.
Result
Infrastructure costs cut by around 80%, data preparation reduced from 7 hours to under 1 hour.
Microsoft FabricOneLakeDelta LakePythonPurview
MEWI Markierungen, skilled-trades business
16 hrs

of working time saved per week

From paper notes to digital site management

Starting point
Quotes and project descriptions were typed up from handwritten notes; the crews on site were organised on paper.
Solution
Migration to and setup of HERO Software: digital team and project management, with data captured directly on site via tablet.
Result
At least 16 hours saved per week. Projects are recorded live on site instead of being transcribed afterwards.
HERO SoftwareTablet captureProcess digitisation

How we work together.

Four steps, clear responsibilities, no black box. You always know where the project stands.

Analysis

Together we review processes, data sources and costs. The result: a clear picture of where the biggest lever is.

Design

Architecture, timeline and budget on one page. No surprises, no black box.

Delivery

Iterative and in close coordination. You see progress in weeks, not quarters.

Support

After go-live I stay on board: monitoring, fine-tuning and training your team.

Sergej Steinhauer, founder of Stonitex

Sergej Steinhauer

Founder, Senior Data Engineer

For more than 15 years I have built data platforms on SQL Server and data warehouses. Since 2017 I have led the migration of an enterprise DWH to Microsoft Fabric; in parallel I develop AI agents and automations for mid-sized companies as a freelancer.

  • Microsoft Fabric, OneLake, KQL, Power BI and Purview in daily use
  • M.Sc. AI & Business Analytics at FOM University Düsseldorf, thesis on DWH migration to Fabric
  • Pragmatic, affordable and at eye level: solutions that fit mid-sized companies
  • German, Russian and English
Microsoft FabricOneLakeKQLT-SQLPower BIPurviewPythonFastAPIn8nDocker

Away from data I make music with Suno, and built a small browser game around it: fly a drone through five stations, each with its own track. Play Stonitex Flight

Career.

From controlling via business intelligence to data architecture. Every step sharpened the eye for what really slows companies down when it comes to their data.

Positions

  1. 2024 - today
    Data & AI Consultant, Stonitex Freelance, Düsseldorf

    Automated end-to-end workflows with n8n, REST APIs and Notion. Prototyping autonomous AI agents, containerised environments with Docker and Linux.

  2. 2017 - today
    Senior Data Engineer Shipping and logistics provider, Ratingen

    Led the migration of the enterprise DWH to Microsoft Fabric (Medallion Architecture, OneLake, Delta Lake). Real-time analytics with KQL, governance concept with Purview, administration of the SQL Server landscape (SSIS, SSAS, Power BI).

  3. 2015 - 2017
    BI Application Developer Für Sie eG, Cologne

    Further development of the DWH architecture and automated ETL pipelines on SQL Server. Design of SSAS cubes and SSRS reports for business departments.

  4. 2012 - 2015
    BI Consultant Coplanner Software, Wiesbaden

    Technical consulting, design and implementation of relational and multidimensional controlling and reporting solutions.

  5. 2001 - 2012
    Licence management, project and service management, controlling incl. Evonik Industries, SHL Telemedizin, German Air Force

    Commercial and operational roles that shaped my sense for processes, costs and responsibility.

Education

  1. 2024 - 2027
    M.Sc. AI & Business Analytics FOM University, Düsseldorf

    Focus on MLOps, advanced analytics and big data. Thesis: a framework for DWH migration to Microsoft Fabric.

  2. 2008 - 2011
    B.Sc. Business Informatics FOM University, Düsseldorf

    Database design, IT architecture and business administration.

  3. 2005 - 2006
    Certified Commercial Specialist (IHK) IHK Cologne
Languages

German and Russian at native level, English at professional working proficiency.

Contact

Let's talk about your data.

In a free initial call we find out where your biggest lever is. No obligation, straight to the point.

Free and without obligation. No newsletters, your data is not shared.

Thank you for your request.

I usually reply within one business day.

Request assessment