Tim Eisele
Senior Backend Developer at Holidu
Munich, Bavaria, Germany
Summary
🤩
Rockstar🎓
Top SchoolTim Eisele is a Senior Backend Developer with 11 years of experience specializing in Java/Kotlin backend systems, Kubernetes operations, and cloud-native tooling, currently building AI-driven product enrichment and workflow automation at Holidu. He combines production-grade Spring Boot and ktor application development with deep hands-on DevOps expertise—operating clusters, CI/CD pipelines, service meshes, and cloud providers like AWS and Hetzner. An active open-source maintainer and contributor to the popular Jellyfin media server project, he contributes across backend, frontend and FFmpeg build tooling, reflecting a rare full-stack plus systems integration skill set. Tim began managing servers in his teens and has run dorm-scale infrastructure and university data center Kubernetes prototypes, which informs his pragmatic approach to reliability and ops-first architecture. He pairs formal CS training (MSc/BS Karlsruhe) with practical system-level hacking—frequently implementing low-level integrations such as VA-API and media-driver support in builds.
11 years of coding experience
3 years of employment as a software developer
No Degree, Electrical Engineering and Communiation Technology, No Degree, Electrical Engineering and Communiation Technology at Karlsruhe Institute of Technology (KIT)Master of Science - MS, Computer Science, Master of Science - MS, Computer Science at Karlsruhe University of Applied Sciences
German, English
Github Skills (34)
dependency-management10
javascript10
docker10
net10
dotnet10
ffmpeg10
dockers10
asp-net10
api10
encoding10
build-automation10
dotnet-core10
csharp10
signal-processing9
c-language9
Programming languages (23)
Github contributions (5)
jellyfin/jellyfin-ffmpeg
Feb 2022 - Dec 2022
FFmpeg for Jellyfin with custom extensions and enhancements
Role in this project:
DevOps Engineer & System Integrator
DevOps Engineer & System IntegratorContributions:2 releases, 225 reviews, 33 commits in 10 months
Contributions summary:Tim primarily focused on enhancing the build and dependency management within the Jellyfin FFmpeg project. Their contributions include enabling builds with Intel media drivers, integrating and updating various dependencies like libva-utils, Intel oneVPL, and the media-driver. Furthermore, they modified build scripts to allow configuration of the VA-API driver via environment variables and added support for webp images in ID3v2 tags. These changes collectively improve the build process and broaden the functionality of the FFmpeg build.
ffmpegvideojellyfinmultimedia
jellyfin/jellyfin
Mar 2020 - Jan 2023
The Free Software Media System - Server Backend & API
Role in this project:Back-end Developer
Back-end DeveloperContributions:1355 reviews, 70 commits, 166 PRs in 2 years 10 months
Contributions summary:Tim's commits focus on enhancing the Jellyfin media server backend, specifically related to media encoding and subtitle/audio provider functionality. The contributions include refactoring external media handling, such as subtitles and audio, which involved substantial code changes across multiple files. Further work focused on improving the handling of album artists, refactoring to a more generic provider, and fixing issues related to the database for more reliable playback.
cmsdotnetphpcsharpvideo
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