Ruben Pieters
Compiler Engineer at Guardsquare
Bruges Metropolitan Area Belgium
Summary
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RockstarRuben Pieters is a compiler engineer with 10 years of experience, currently contributing to DexGuard at Guardsquare to harden Android apps against reverse engineering and tampering. He combines a strong academic background—having completed a PhD on structuring domain-specific languages—with hands-on systems work in compiler internals and bytecode tooling. Ruben is an active contributor to the well-known ProGuard project, where he has implemented thread-safety fixes, clearer error handling, and refactorings that improve maintainability. He has applied his expertise across industry and research settings, from telemetry platforms and lab equipment control to mobile app security. Based in the Bruges area, he also volunteers on the rules team for Null Signal Games, demonstrating attention to precise, rule-based systems outside of work. Colleagues describe him as someone who turns formal language insights into pragmatic, production-grade compiler improvements.
10 years of coding experience
5 years of employment as a software developer
Github Skills (7)
javas10
obfuscation10
build-tools10
android10
proguard10
java10
optimization10
Programming languages (12)
Github contributions (5)
Guardsquare/proguard
Jun 2021 - Nov 2022
ProGuard, Java optimizer and obfuscator
Role in this project:
Back-end Developer
Back-end DeveloperContributions:1 release, 7 reviews, 6 commits in 1 year 5 months
Contributions summary:Ruben contributed to the ProGuard project by addressing specific issues and making code improvements. Their work includes ensuring thread usage in the `InfluenceFixPointVisitor`, handling `IncompleteHierarchyException` with informative error messages, and refactoring the `MethodInliner` class into separate subclasses. Further contributions involve fixing index errors within the `MarkedAnnotationDeleter` test and correcting an issue in the `TypeArgumentFinder`.
optimiserbytecode-manipulationandroidoptimizerobfuscator
rubenpieters/teaflo
Mar 2018 - Sep 2019
Contributions:532 pushes, 7 branches in 1 year 6 months
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