Morten Siebuhr is a seasoned systems and application engineer with 15 years of experience who now leads the Internal Developer Platform at one.com, guiding platform strategy from idea to production. He combines strong systems architecture instincts with pragmatic craftsmanship, often finding creative solutions to complex distributed-systems problems. Experienced across backend engineering, platform ownership and team leadership, he’s shipped scalable infrastructure at One.com and earlier roles including Citrix and Tactile Entertainment. An active problem-solver with a computer-science mindset, he has also contributed to Prometheus by improving PromQL parser fuzzing—a signal of deep testing and reliability focus. Outside work he mentors as a scout leader in Roskilde and occasionally dabbles in UX, talks, and open source.
15 years of coding experience
21 years of employment as a software developer
M.Sc. Computer Science, M.Sc. Computer Science at Københavns Universitet - University of Copenhagen
The Prometheus monitoring system and time series database.
Role in this project:
QA Engineer / Test Automation Engineer
Contributions:7 commits, 4 PRs, 52 comments in 1 year 4 months
Contributions summary:Morten's contributions centered around improving the PromQL parser through fuzzing. They added fuzzing instrumentation, including functions to test different parts of the parser, like metrics and expressions, using go-fuzz. The user refined the fuzzing process by adjusting error handling and focusing the fuzzer on more relevant data.
Contributions:97 commits, 1 PR, 26 pushes in 7 years 4 months
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Morten Siebuhr - Head Of Internal Developer Platform