Passionate about software engineering, compiler technology, and Java? Excited to solve challenging problems and build innovative software used on billions of devices? Join our Java team!
We develop the successful open-source project ProGuard and the cutting-edge security product DexGuard. Using compiler technology, obfuscation, encryption, and optimization techniques, we make Java and Android applications smaller, faster, and more resilient to reverse engineering and tampering.
Guardsquare is a software product company with small international teams solving challenging problems and creating high-quality products. You’ll be part of the team working on ProGuard, DexGuard, and new products based on Java technology. This provides immense opportunities to make a direct impact on products, features, and workflows. The techniques you come up with could potentially be in use by major companies within weeks, including the largest payment processors, banks, and social media companies. Every team member designs, develops, maintains, and improves our software, while also providing email support to customers. Plus, you’ll have the opportunity to research the latest compiler and mobile security technologies
At Guardsquare, we pride ourselves on being a diverse and multicultural company, with team members representing numerous nationalities. We value different perspectives, which has contributed to our leadership in mobile application security. You’ll be part of a dynamic team focused on excellence and continuous learning. We encourage our colleagues to share opinions, collaborate, and grow professionally.
So, what are you waiting for? Join us!
Guardsquare offers the most complete approach to mobile application security on the market, delivering the highest level of protection, with ease. Guardsquare integrates seamlessly across the full development cycle, from mobile app security testing and code hardening to real-time threat detection and API security. Guardsquare provides enhanced mobile application security across the entire development process.
More than 1,000 customers worldwide across all major industries rely on Guardsquare to help them identify security risks and protect their mobile applications and SDKs against reverse engineering and tampering in the ever-evolving threat landscape.
Guardsquare is based in Leuven (Belgium) with offices in Gent (Belgium), Boston (USA), and Munich (Germany).

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 975 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.