About Us

We are an ambitious startup with the vision to substantially improve the security of computer networks. Our technical team brings together extensive expertise in engineering distributed systems at scale in the field of network security analysis.

Leadership Team

Dr. Matthias Vallentin
Co-Founder & CEO

Matthias has been immersed in operational network security monitoring for the last decade. He ported the Bro network security monitor from a single-machine to a cluster architecture. In his PhD and post-doc at UC Berkeley, he tackled the problem of storing and processing the massive amount of data that such monitoring systems produce. His dissertation lays the foundation stone for Tenzir's existence.

Dominik Charousset
Co-Founder & CTO

Dominik is an expert in architecting and implementing software for scalable distributed systems. As the creator and maintainer of CAF, the C++ Actor Framework, he grew the project from an academic experiment to an industrial-strength building block in various C++ high-performance projects and products in finance, gaming, and network security. Dominik leverages CAF to build Tenzir's highly scalable software stack.

Julia Vallentin

Before joining the team at Tenzir, Julia worked as an Associate at Harmsen Utescher, an international law firm specialized in intellectual property law. Prior to this, Julia was a judicial clerk at the Hanseatic Higher Regional Court, with secondments to the Federal Cartel Office in Bonn and to a corporate law firm in Boston. Thanks to Julia's expertise, Tenzir excels not only in terms of performance and scalability but also meets the highest legal standards.


Tenzir attends Infosecurity Europe in London, Europe's leading event for information and cyber security, taking place in London, UK.

Tenzirs speaks at the Zeek Workshop about integrating MISP, Zeek, and historical context about indicators in realtime.

Tenzir accompanies Hamburg Invest at Hannover Messe, a technology and industry expo, taking place in Hannover, Germany.

Tenzirs joins the Maritime Cluster Northern Germany (MCN), a network that promotes and develops cooperations in the maritime industry.

Tenzir wins the InnoRampUp grant from the Hamburgersche Investitions- und Förderbank (IFB).

Tenzirs speaks at BroCon on how to automate historic intelligence lookups with Zeek, Broker, and VAST.

Tenzirs enters into a research collaboration with DFN-CERT, the CERT for the German Research Network DFN, to exchange knowledge and insights with their seasoned team of incident responders and security engineers.

Hamburg Invest selects Tenzir to accompany them at CeBIT, the largest IT expo in the world, taking place in Hannover, Germany.

Tenzir completes their Series Angel financing round and opens their office in Hamburg, Germany.

Matthias and Dominik found Tenzir.

Working at Tenzir

If you are interested in working on challenging cyber security problems and want to participate in building a great company right in the heart of downtown Hamburg, check out our careers page.