Erwin De Haan
DevOps Engineer at EraYaN
Delft, South Holland, Netherlands
Summary
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RockstarErwin De Haan is a DevOps Engineer based in Delft with 13 years of hands-on experience building reliable backend systems and infrastructure. Currently at Calcasa and running his own tech business EraYaN, he blends operational rigor with entrepreneurial initiative to deliver production-ready tooling. His open-source contributions include backend improvements to Jellyfin and robustness enhancements to the popular ripme downloader, showing a knack for making software more adaptable and maintainable. Known for pragmatic refactors—like deep-copy utilities and site-agnostic ripping helpers—he focuses on durable solutions that simplify complex workflows. Colleagues value him for steady, behind-the-scenes engineering that keeps services resilient and developer-friendly.
13 years of coding experience
English, German, Japanese
Github Skills (20)
back-end-development10
net10
dotnet10
object-oriented-programming10
webscraping10
java10
asp-net10
javas10
dotnet-core10
backend10
csharp10
dotnet-new9
skiasharp9
html-parsing9
regular-expression9
Programming languages (24)
Github contributions (5)
4pr0n/ripme
Sep 2014 - May 2017
Downloads albums in bulk
Role in this project:
Back-end Developer
Back-end DeveloperContributions:8 commits, 4 PRs, 7 comments in 2 years 8 months
Contributions summary:Erwin primarily worked on enhancing the functionality of the `ChanRipper` class within the `ripme` project. Their changes included making the ripper more adaptable to different chan sites, adding support for self-hosted content, and implementing a helper class for managing chan sites. The user also made modifications to the `FineboxRipper` and `NatalieMuRipper` improving their ability to extract content. Additionally, they made build improvements for the project. These changes suggest a focus on improving the robustness and versatility of the content-downloading capabilities of the application.
downloaddownloaderpythonalbumsjava
jellyfin/jellyfin
Dec 2018 - Mar 2021
The Free Software Media System - Server Backend & API
Role in this project:Back-end Developer
Back-end DeveloperContributions:79 reviews, 238 commits, 75 PRs in 2 years 3 months
Contributions summary:Erwin primarily contributed to the backend functionality of the project, as demonstrated by their work on deep copy extension methods and modifications to library management code. They implemented new methods to copy properties between objects, which was then utilized within the library manager to create or modify objects. Furthermore, the user updated existing code, including moving code related to the Skia graphics library and refactoring its usage. This indicates a focus on the core backend logic and associated functionality.
cmsdotnetphpcsharpvideo
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