Arend-jan Kauffmann
Chief Technology Officer at Lumos 365 Ltd.
Gelderland, Netherlands
Summary
👤
Senior🎓
Top SchoolArend-Jan Kauffmann is a seasoned technology leader and Chief Technology Officer at Lumos 365 with over 30 years in IT and more than 20 years focused on Microsoft Dynamics NAV/Business Central. He combines deep architecture, integration and platform expertise—spanning C/AL and AL, VS Code, .NET, Azure and Office 365—with hands-on development and QA experience, including contributions to Microsoft’s ALAppExtensions for XML validation. A frequent conference speaker, trainer and long-time community builder (former chairman of the Dutch Dynamics Community), he’s recognized as a Microsoft MVP since 2013 and excels at turning complex ERP integrations into pragmatic, maintainable solutions. Based in Gelderland, Netherlands, he pairs consultant-level technical craftsmanship with a belief in knowledge-sharing as a growth engine.
10 years of coding experience
20 years of employment as a software developer
Van LodensteincollegeICT Applicatieprogrammeur, ICT Applicatieprogrammeur at ECABO AMBI
English, Dutch
Github Skills (4)
xml10
lang10
al-language10
business-central9
Programming languages (7)
Github contributions (5)
microsoft/ALAppExtensions
Apr 2020 - Feb 2021
Repository for collaboration on Microsoft AL application add-on and localization extensions for Microsoft Dynamics 365 Business Central.
Role in this project:
Backend Developer & QA Engineer
Backend Developer & QA EngineerContributions:40 reviews, 6 commits, 6 PRs in 10 months
Contributions summary:Arend-jan's contributions primarily involve the development and testing of XML validation functionality within the context of AL application extensions. They implemented code units for XML validation, including methods for schema validation and handling well-formedness. Furthermore, they wrote test cases to verify the correct behavior of the XML validation features, including tests for valid and invalid XML inputs.
dynamics-365-business-centralcdstranslationbusiness-centralpower-platform
ajkauffmann/PDFViewer
Jan 2019 - May 2021
PDF Viewer for Microsoft Dynamics 365 Business Central
Contributions:17 commits, 4 PRs, 10 pushes in 2 years 3 months
dynamics-365-business-centralpdfbusiness-centralpdf-viewerdynamics-365
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