Benjamin Kemner
Full-Stack-Entwickler at Pentoworks
Lower Saxony, Germany
Summary
👤
Senior🎓
Top SchoolBenjamin Kemner is a Full-Stack-Entwickler with 14 years of experience building pragmatic, enterprise-ready software and architecting solutions that move organizations rather than patching old patterns. Based in Lower Saxony, Germany, he combines hands-on full-stack work at apetito AG with freelance software architecture through Pentoworks, bringing both product-focused delivery and long-term technical direction. His contributions to open-source—most notably enhancing PDF parsing robustness in the PdfSharpCore port—showcase deep knowledge of file formats and defensive backend engineering. Trained in Wirtschaftsinformatik and starting his career as a Fachinformatiker, he blends applied computer science with a practical, anti–“faster horses” mindset to enable real innovation across teams.
14 years of coding experience
15 years of employment as a software developer
Fachinformatiker (Anwendungsentwicklung), IHK, Fachinformatiker (Anwendungsentwicklung), IHK at S&F DatentechnikBachelor of Science (B.Sc.), Wirtschaftsinformatik, Bachelor of Science (B.Sc.), Wirtschaftsinformatik at Westfälische Hochschule
Github Skills (8)
net10
parserator10
asp-net10
pdf10
dotnet10
parser10
csharp10
dotnet-core10
Programming languages (8)
Github contributions (5)
ststeiger/PdfSharpCore
Aug 2020 - Jan 2021
Port of the PdfSharp library to .NET Core - largely removed GDI+ (only missing GetFontData - which can be replaced with freetype2)
Role in this project:
Back-end Developer
Back-end DeveloperContributions:11 commits, 3 PRs, 1 comment in 5 months
Contributions summary:Benjamin primarily focused on improving the PDF parsing functionality of the PdfSharpCore library. Their contributions include introducing a "Moderate" parse mode to handle broken references and prevent exceptions. They also made changes related to handling cross-reference tables and trailers. The user's work demonstrates expertise in PDF document structure and file format handling.
netstandard20dotnetpdfpdfiummissing
devbar/PB-DotNet
Jul 2013 - Sep 2015
Contributions:19 commits, 8 pushes, 1 comment in 2 years 2 months
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