Welcoming Tomasz Czyz – Senior Penetration Tester  

We are pleased to announce that Tomasz Czyz is joining River Security as a Senior Penetration Tester.

Tomasz joins us from Atea, where he has worked as a Senior Security Consultant in recent years. He brings solid experience in penetration testing, vulnerability assessments, assumed breach engagements, and testing of network and infrastructure environments, as well as digital forensics and incident response.

He holds recognized industry certifications including OSCP and OSWP in offensive security, along with BTL1 and BTL2 in digital forensics and incident response. He has also completed advanced Offsec training, further strengthening his technical depth within offensive security.

Tomasz has a strong background in enterprise environments, including Windows Server, Microsoft Azure, VMware, and network security. He combines technical precision with practical understanding of how security works in real-world infrastructures.

In addition, he has taken personal initiative to explore IoT, IIoT, and OT security through his own lab environment, reflecting both curiosity and commitment to continuous learning.

Tomasz is excited to join River, contribute to our Active Focus initiative, and continue developing within penetration testing and offensive security.

Outside of work, he enjoys trail running, and most of his time is spent with his large family.

Please join us in welcoming Tomasz to River Security.