Martijn Hoekstra
Chairman Works Council at Zivver
Amsterdam, North Holland, Netherlands
Summary
🤩
Rockstar🎓
Top SchoolMartijn Hoekstra is an experienced software engineer and technical leader based in Amsterdam with 14 years building backend and platform systems, currently an Expert Engineer and Chairman of the Works Council at Zivver. He has steered cross-disciplinary teams, taken interim product ownership, and consistently turns complex problems into practical, testable solutions while leaving teams more capable. A long-term contributor to the Scala compiler projects (including Scala 2 and the high-profile Scala 3/Dotty compiler), he focuses on correctness, parsing, string handling and compiler tooling—work that improves language reliability for many users. His background in physics and early career in .NET service architectures gives him a strong grounding in rigorous problem analysis and pragmatic system design. Colleagues describe him as a calm, hands-on leader who balances deep technical insight with clear mentorship.
14 years of coding experience
13 years of employment as a software developer
Physics, Physics at Universiteit van AmsterdamGymnasium B, Gymnasium B at Murmellius
English, German, Dutch
Stackoverflow
12,054reputation
1.4mreached
258answers
126questions
scala
top-5%
Github Skills (22)
string-interpolation10
scala10
dotty10
compiler-compiler10
parsing10
scala-compiler10
text-parsing10
testing9
jvm-languages9
object-oriented-programming9
functional-programming9
compiler9
compile8
compiler-options8
future6
Programming languages (16)
Github contributions (5)
scala/scala
Feb 2014 - Nov 2021
Scala 2 compiler and standard library. Scala 2 bugs at https://github.com/scala/bug; Scala 3 at https://github.com/scala/scala3
Role in this project:
Back-end Developer
Back-end DeveloperContributions:53 reviews, 37 commits, 72 PRs in 7 years 9 months
Contributions summary:Martijn primarily contributed to the Scala compiler and standard library, focusing on bug fixes and documentation updates. Their work included addressing issues related to string manipulation with surrogate characters, enhancing documentation for core math functions like `log` and `sqrt`, and resolving problems within the collection framework. The user also implemented changes to improve the performance of list operations. These contributions improved the correctness, usability and efficiency of the Scala language.
functional-programmingobject-oriented-programmingscala-libraryscala-programming-languagestandard-library
scala/scala3
Sep 2016 - Apr 2020
The Scala 3 compiler, also known as Dotty.
Role in this project:Back-end Developer
Back-end DeveloperContributions:14 commits, 11 PRs, 53 comments in 3 years 8 months
Contributions summary:Martijn contributed to the Scala 3 compiler, focusing on bug fixes and improvements to the parsing and string interpolation functionality. Their work included addressing issues with unicode escapes, correcting offset calculations, and incorporating review feedback. The user also made modifications to the compiler's configuration and testing infrastructure, including adding features for printing compiler phases and updating test expectations.
compilerscala3scaladottyepfl
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