Kresten Thorup
Co-Founder at Berserk
Galten, Central Denmark Region, Denmark
Summary
🤩
Rockstar🎓
Top SchoolKresten Thorup is a veteran systems engineer and serial founder with 35 years of experience building large data systems, distributed architectures, programming language implementations, and secure I/O. As co-founder and former CTO of Humio and Trifork, he blends hands-on backend engineering with product and company leadership, and continues to found and advise startups while running diverse real-world projects including a 135ha farm. His open-source contributions show deep low-level expertise—ranging from Java lightweight-thread work in Kilim to implementing torrent protocol logic and efficient data structures in 500lines—highlighting a pragmatic focus on performance and correctness. With a PhD in computer science and international research experience, he pairs rigorous academic training with a knack for turning complex systems into maintainable, high-throughput products.
35 years of coding experience
25 years of employment as a software developer
Computer Science, Computer Science at Aalborg UniversityDiploma of Journalism, Diploma of Journalism at Danmarks Medie- og JournalisthøjskolePh.D. Computer Science, Ph.D. Computer Science at Aarhus UniversityBrorsonskolenFolkeskolens afgangseksamen, Folkeskolens afgangseksamen at Blaakilde EfterskoleStudentereksamen math/physics, Studentereksamen math/physics at Varde GymnasiumUniversity of Tokyo
English
Stackoverflow
74reputation
1kreached
2answers
1question
Github Skills (20)
erlang10
bytecode-manipulation10
java10
javas10
concurrency10
data-set9
networking9
datasets9
multithreading9
file-processing8
file-handling8
file-access8
fileio8
functional-programming8
mongodb6
Programming languages (11)
Github contributions (5)
kilim/kilim
Aug 2013 - Sep 2013
Lightweight threads for Java, with message passing, nio, http and scheduling support.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:9 commits, 1 comment in 1 month
Contributions summary:Kresten contributed significantly to the Kilim project, focusing on core features and improvements. They refactored the `ClassWeaver` class to use a `ThreadLocal` for caching and made changes to the `MethodFlow` and `MethodWeaver` classes to ensure correct line number mapping during bytecode generation. Furthermore, the user added Erjang-specific methods to the `Mailbox` class and addressed a bug in the `Fiber.wrongPC` function, demonstrating a strong understanding of the project's underlying mechanisms and purpose. Finally, the user fixed the usage of the `Detector.commonSuperClass` and applied code formatting and style changes.
schedulingthreadsniomessage-passingjava
aosabook/500lines
Nov 2013 - Nov 2013
Role in this project:Back-end Developer
Back-end DeveloperContributions:12 commits in 4 days
Contributions summary:Kresten primarily contributed to the back-end logic of a torrent client application. Their work involved implementing the torrent protocol, managing peer connections, and handling data transfer. The user also focused on refactoring the code, improving efficiency, and adapting the code to use sets for a more efficient way of representing data. The changes included the addition of new features and improving the existing ones.
linesmodular-designlistsjava
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