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Sönke SchäferSS

Sönke Schäfer

Data Architect

€960/day
Lübeck, DE
15+ years
Microsoft Access
Microsoft SQL Server
VBA
Microsoft Power Automate
Microsoft Power Apps

Average response time: 1 hour

Freelancer profile translated to English.
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About Sönke

Ten years of Excel. Fifteen years of databases. A SQL Server that "runs".

And every month the same question: Why don't the numbers add up?

If you know this, you're in the right place.

I am Sönke Schäfer – the data shepherd.

For over 25 years, I've been bringing order to the engine room of medium-sized IT.

My approach in three words: Structure before AI.

🐑 STRUCTURE

Clean data, clear processes. Every tool fails without a foundation.

🐑 SYSTEM

Pragmatic extension instead of expensive replacement. Access and SQL Server around your legacy systems, not instead of them.

🐑 SPEED

From a few days to the first productive evaluation.

No ERP migration projects lasting two years.

Specifically, this means:

→ Consolidating data from multiple legacy systems into a central DWH

→ Evaluations that your standard ERP reporting doesn't provide

→ Access forms for special processes that the ERP handles too clumsily

→ Bridges to the outside: Webshop, WordPress, Power Platform, APIs

→ Writing synchronization between systems that officially don't talk to each other

Local AI on your own data is part of it when the topic fits – not as an end in itself.

My clients: Managing directors in medium-sized businesses in Schleswig-Holstein and Northern Germany who want to keep their ERP and build around it – quickly, pragmatically, without large projects.

If you have an ERP change offer and are looking for a second opinion:

→ Write me a message

→ Or book an initial consultation: sesoft de

  • German

    Native or bilingual

  • English

    Conversational

Can work on-site
Lübeck (up to 50km)

Experience

  • SeSoft GmbH Web/Database/Solutions
    MD | Data Architect | Data Shepherd 🐑 | Structure before AI | SQL Server • Access • VBA • ETL • DWH
    January 1999 - Today (27 years and 7 months)
    Sierksdorf, SH, Germany
    Data architecture, process digitalization, and IT consulting for small and medium-sized enterprises. Accompanied over 30 clients in industry, trade, associations, and services since 1999.

    Current and selected projects:

    - Federal Association: XRechnung/ZUGFeRD implementation for automated invoicing + extension of an existing Access/SQL Server solution, continuously developed since 1999
    - Ship Supplier: Menu planning and goods ordering app for ship's cooks with offline operation + connection to MS Navision and Business Central via Azure SQL and Power Platform
    - Real Estate Fund: Backend for multi-client fund management and balance sheet forecasting models + SQL Server, Power Platform, Azure Dataverse
    - Wholesale Timber Company: Development of a central data warehouse with automated ETL processes from the ERP + individual key performance indicator system for management (since 2022)
    - Window Manufacturer: Data warehouse, ETL from ERP, reporting for management, change and release processes for data quality
    - Manufacturing Company: DWH, forecasting, drill-down analyses, time tracking system, and control of series production (since 2019)
    - Health Insurance Company (BKK): New creation of databases for all claims departments (300 users), ETL data import, controlling provision
    - Law Firm: Word automation and case management with Access/SQL Server (since 2003)

    Technologies: SQL Server (T-SQL, SSIS, SSAS, SSRS), Microsoft Access, VBA, Power Platform (Power BI, Power Automate, Power Apps), Azure SQL, Dataverse, Python, WordPress, Oracle PL/SQL, PostgreSQL, MySQL, PHP, WordPress
  • ESYLUX GmbH,
    Head of Data Management → Head of IT / CDO
    January 2015 - January 2021 (6 years)
    22 Ahrensburg, Germany
    Strategic and operational IT management. Infrastructure migration, DWH expansion (SSIS/SSAS/SSRS), ERP integration, insourcing of critical applications.
  • ESYLUX,
    Head of Data Management, later Head of IT / CDO
    January 2015 - January 2021 (6 years)
    22 Ahrensburg, Germany
    Company-wide key performance indicator system, DWH with SSIS/SSAS/SSRS. Infrastructure migration, ERP data migration (odoo).
    Access VBA, SQL Server, SSIS/SSAS/SSRS Agile project management (10 employees). Windows Phone App + ASP.NET API for business process mapping. ASP.NET, Access VBA, SQL Server Rapid Word automation and case management. Access frontend with SQL Server backend. Long-term support and further development. Access VBA, Word VBA, SQL Server Inventory management for approx. 20,000 shipments/month. Webshop and bank interfaces, Outlook import, dunning. Access VBA, Outlook VBA, SQL Server New development of several specialized databases (300 users): Sickness benefits, DRG, nursing care, dental prosthetics, etc. ETL import, controlling provision, load optimization. Access VBA, SQL Server, ASP Membership management, statistics, revenue distribution, intranet/extranet (ASP). Long-term support. Access VBA, SQL Server, ASP

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Education

  • MCSA: SQL Server 2012/2014
    MCSA: SQL Server 2012/2014
  • Exam
    Exam
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