Marcus Hirt
Director Of Engineering at Datadog
Küssnacht (SZ), Schwyz, Switzerland
Summary
🤩
Rockstar🎓
Top SchoolMarcus Hirt is a seasoned engineering leader with over two decades of experience building JVM tooling and observability platforms, currently serving as Director of Engineering at Datadog. He founded Datadog’s Profiling, Dynamic Instrumentation/Live Debugger, IDE Integration, and ML Observability teams, blending product leadership with deep systems-level expertise. Previously he led Java Mission Control efforts at Oracle and co-founded Appeal, the company behind the JRockit JVM, giving him uncommon insight into JVM internals and performance diagnostics. An active OpenJDK contributor and project lead on Mission Control, his work on Java Flight Recorder parsing and production profiling tools has real-world impact on how Java services are monitored and debugged. Based in Switzerland, he pairs hands-on backend engineering chops with strategic team-building across observability and developer tooling domains. Colleagues describe him as a pragmatic technologist who turns complex runtime problems into reliable, scalable solutions.
10 years of coding experience
20 years of employment as a software developer
Banhagens GymnasiumMaster's Degree Comp. Sci. & Eng., Master's Degree Comp. Sci. & Eng. at KTH Royal Institute of TechnologyHigh School, High School at Åsö GymnasiumNytorpsskolanAdolf Fredriks MusikklasserRealgymnasium Kirchenfeld
Swedish, English, German
Stackoverflow
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0reached
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Github Skills (6)
javas10
openjdk10
java10
debug9
debugging9
build-automation8
Programming languages (12)
Github contributions (5)
openjdk/jmc
Jan 2021 - Dec 2022
Repository for OpenJDK Mission Control, a production time profiling and diagnostics tools suite. https://openjdk.org/projects/jmc
Role in this project:
Back-end Developer
Back-end DeveloperContributions:535 reviews, 38 commits, 156 PRs in 1 year 11 months
Contributions summary:Marcus primarily contributed to fixing issues related to Java Flight Recorder (JFR) parser and general setup within the OpenJDK Mission Control project. Their work involved modifications to the `StructTypes.java` and `ParserStats.java` files to address hashcode inconsistencies and parsing issues. Additionally, the user removed uses of `Collections.sort` to optimize the code and updated dependencies and project setups to resolve potential build and runtime errors. The commits also included the creation of release notes for various versions of the project.
mission-controlprofilingjmchacktorberfest2021openjdk
JetBrains/java-mission-control
May 2018 - Sep 2021
Contributions:171 commits in 3 years 4 months
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