Higher education
Informix-to-PostgreSQL backend migration; existing applications remain unchanged.
Frank Hentzschel · Freelance developer
Software development.Databases.Office solutions.
Creating custom applications, supporting existing systems and improving business processes.
I am Frank Hentzschel, a freelance software and database developer with more than 30 years of professional experience. My focus is Access, Excel/VBA, databases and business-critical applications.
FRANK HENTZSCHEL✓ More than 30 years of experience✓ Remote and on-site in the DACH region✓ Access · Excel/VBA · SQL
01 / SERVICES
Areas of expertise
From custom development to maintaining established software: select the area relevant to your project.
Access & VBA
Development, maintenance, troubleshooting, takeover and extension of custom applications.
Learn more ↗Excel & VBA
Automation, data processing, custom tools and reporting.
Learn more ↗E-invoicing
ZUGFeRD, XRechnung and integration of electronic invoicing workflows.
Learn more ↗Databases & SQL
SQL Server, Oracle, PostgreSQL, Informix, SQL programming and performance.
Learn more ↗Legacy systems
Analyze, stabilize and incrementally modernize established applications.
Learn more ↗Data integration & reporting
Office automation, Power Query, Power BI, SSRS and interfaces.
Learn more ↗Database migration
Migrate and validate existing database environments.
Learn more ↗Software development
Custom software development using C#/.NET and Delphi.
Learn more ↗Office+49 8641 59 11 626
Mobile+49 170 48 261 69
E-Mailinfo@office-dev.de
AddressBinderstr. 30, 83224 Grassau, Germany
02 / RESULTS
Measurable improvements, not empty promises.
Real examples from previous projects.
6+ hrs → <1 hr
Bavarian bank (anonymous): invoice generation moved from Word automation to Access reports.
2 days → 2 min
E.ON: recurring monthly Excel work automated with VBA.
3 months → ~1.5 years
Swiss Re: short-term cover became longer-term application support.
03 / PROJECTS
Projects and references
Selected examples. Ongoing projects are clearly identified.
Retail
Supporting Access applications; ZUGFeRD integration is being implemented.
Industry association
Modernizing an Access invoicing application and integrating electronic invoicing processes.
Mercedes-Benz environment
Maintained and enhanced a business application developed over more than 25 years until replacement.
Bavarian judiciary
SQL Server optimization, reporting, Excel/Power Query and Access support.
Bank in Bavaria
Took over an Access application and reduced invoice generation from six hours or more to under one hour.
E.ON
Excel automation, data integration and EDIFACT processing through Access and Outlook.
Swiss Re
Took over an Excel/VBA application with host connection; productive after one week and supported it for approximately 18 months.
04 / FRANK HENTZSCHEL
About me
Understand first, then change: I analyze applications and business processes before implementing solutions. Proven software need not automatically be replaced. I also develop new custom applications and database solutions.
I support companies on short-term assignments or longer projects, primarily remotely and on-site when required across the DACH region.
AccessVBASQL ServerOraclePostgreSQLInformixPower BIC#/.NETDelphi
Cross-industry experience: Energy, banking, insurance, manufacturing, retail and the public sector. Explore industries →
General developer profile (PDF) ↓05 / CONTACT
Let’s discuss your project.
Looking for support with Access, Excel/VBA, databases, e-invoicing or custom software development? I would be happy to hear from you.
Contact via LinkedIn ↗