Holger Grittner

IT

Holger Grittner
Hilden, Germany

Experience

Jan 2009 - Present
17 years 1 month

IT

Holger Grittner Consulting

Jan 2001 - Dec 2009
9 years

Managing Director and Partner

Polygon GmbH

Jan 1989 - Dec 2001
13 years

IT

Freelancer and Lecturer

Jan 1985 - Dec 1989
5 years

IT

Frank Neul und Holger Grittner GbR

Jan 1981 - Dec 1984
4 years

Apprenticeship as Central Heating and Ventilation Technician

Jan 1969 - Dec 1981
13 years

School education, intermediate school leaving certificate

Summary

My focus is on application development with VBA (macros) for Microsoft Access, Microsoft Excel and Microsoft Word. This includes process analysis, creating data models, designing the GUI, ribbon-based user guidance, as well as producing meaningful data outputs (lists, pivots and charts).

Microsoft Teams is also increasingly used as a collaboration tool, using many of its features: calling/video, calendar, Planner (Kanban), To Do, Lists, Forms, Whiteboard, Visio, topic-specific channels, etc.

Consulting and development according to IT baseline protection (BSI Standard) and ISO/IEC 27001, government experience (information security management) and General Data Protection Regulation (GDPR).

Skills

Areas Of Expertise

  • Software Development
  • Process Analysis And Data Modeling
  • Network And Desktop Administration
  • Remote And On-site Support
  • Training
  • Sales Of Hardware (Wortmann Ag), Components, Software And Accessories

Industries

  • Law Firms
  • Medical Practices
  • Government Agencies
  • Service Providers
  • Retail
  • Manufacturing
  • Logistics
  • Media
  • Associations

Operating Systems

  • Windows 98 To Windows 11
  • Windows Server From Nt4.0 To Windows Server 2019

Programming & Scripting Languages

  • Vba
  • Batch Scripting

Databases

  • Microsoft Access
  • Microsoft Sql Server
  • Mysql
  • Sql/400
  • Postgresql

Applications

  • Microsoft Office Products/applications (Word, Excel, Powerpoint, Outlook), All Versions (Microsoft 365, Office, Published App (Citrix))
  • Microsoft Sharepoint
  • Various Tools

Collaboration & Tools

  • Microsoft Teams (Calling/video, Calendar, Planner (Kanban), To Do, Lists, Forms, Whiteboard, Visio, Topic-specific Channels)
  • Active In Topic-specific User Forums (E.g. On Xing)

It Security & Standards

  • Consulting And Development According To It Baseline Protection (Bsi Standard)
  • Iso/iec 27001
  • Government Experience In Information Security Management
  • General Data Protection Regulation (Gdpr)
  • Protection Requirements Assessment According To Bsi Standard 200-2 Of The It Baseline Protection

Vba & Office Development

  • Macro Automation
  • Event-driven Programming
  • Userform Design
  • Ribbon Customization
  • Error Handling
  • Data Manipulation
  • Dynamic Arrays
  • Ado (Activex Data Objects)
  • Data Access Objects (Dao)
  • Adodb (Microsoft Activex Data Objects Database)
  • Com Add-ins
  • Api Integration
  • Custom Functions
  • Excel Object Model
  • Access Object Model
  • Word Object Model
  • Database Connectivity
  • Data Import/export
  • Pivottable Automation
  • Chart Automation
  • Report Generation
  • Template Management
  • Document Automation
  • Cross-application Scripting
  • Performance Optimization
  • Code Refactoring
  • Debugging Techniques
  • Version Control With Vba
  • Semantic Versioning
  • Reddick Naming Convention / General Coding Conventions

Buzzwords

  • User Experience (Ux)
  • Usability & User Experience (Uux) Design
  • Agile Methodologies
  • Devops
  • Continuous Integration/continuous Deployment
  • Stakeholder Management
  • Risk Management
  • Change Management
  • Project Scheduling
  • Government Experience
  • Hands-on Mentality

Languages

German
Native
English
Advanced

Education

Aug 1981 - Jul 1984
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Apprenticeship as Central Heating and Ventilation Technician · Central Heating and Ventilation Technician · Germany

Aug 1969 - Jun 1981
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Secondary School Certificate · School Education · Germany

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