Internships: Apply for one of our many topics OR Share your own proposal! @ Guardsquare in Leuven (BE) and Munich (DE)


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Guardsquare is always looking for people who are excited about compiler technology, code hardening techniques, reverse engineering, static and dynamic code analysis, open source, and so much more!

To learn more about the above, we also offer plenty of internship possibilities within our Java, C++/LLVM and App Analysis teams in Leuven (BE) and Munich (DE).



  • Java Team – Leuven (BE)

In our Leuven-based Java team we work on manipulating Java bytecode. All our software is based on our open source bytecode manipulation library ProGuardCORE ( ).

On top of ProguardCORE we mainly develop 2 different products: ProGuard and DexGuard. ProGuard is a shrinker and optimizer for all Java and Android applications, it makes them smaller and faster. DexGuard is a code hardening tool, which makes Android apps harder to understand for a reverse engineer.


  • C++/LLVM Team – Leuven (BE) & Munich (DE)

In our C++ teams in Leuven (BE) and Munich (DE) we work on our LLVM-based solution, iXGuard. By applying code transformations, code injection, binary instrumentation, code analysis, and more, this product focuses on hardening iOS applications against reverse engineering, both static analysis and dynamic tampering.


  • App Analysis Team – Munich (DE)

In our Munich-based app analysis teams we work on AppSweep. A tool to automatically analyze Android and iOS apps. On the Android analysis side, our software is based on our open source bytecode manipulation library ProGuardCORE ( ) for static analysis, and on own tooling for dynamic analysis. And on the iOS analysis side, our software is based on the LLVM toolchain for static analysis.



You can find all our internship projects HERE, so don’t hesitate to apply!

Didn’t find what you are looking for? Our project list is not exhaustive and we’re always on the lookout for more proposals. So if you have your own idea of what you would like to do during an internship, feel free to make your own suggestion!

Scroll down and fill in the form below if you want to apply with your own idea!



For any other questions about internships, student jobs or thesis opportunities, don’t hesitate to send and email to!




Guardsquare offers the most complete approach to mobile application security on the market. Built on the open source ProGuard technology, Guardsquare’s software integrates seamlessly across the development cycle. From app security testing to code hardening to real-time visibility into the threat landscape, Guardsquare solutions provide enhanced mobile application security from early in the development process through publication.

More than 900 customers worldwide across all major industries rely on Guardsquare to help them identify security risks and protect their mobile applications against reverse engineering and tampering.

Guardsquare is based in Leuven (Belgium) with offices in Boston (USA) and Munich (Germany).



At Guardsquare, we take pride in being a diverse and multicultural company with team members representing numerous nationalities. We value different perspectives and opinions throughout the business which has contributed to our being the market leader in mobile application security. 

You will be part of a dynamic team that strives for excellence and focuses on continuous education and enhancement in skills. We encourage & empower our trusted colleagues to share their opinions, actively collaborate, and continue to learn and grow.