Welcoming Andreas Claesson – Principal Penetration Tester

We’re excited to welcome Andreas Claesson as our new Principal Penetration Tester at River Security. Andreas joined us on October 1st, bringing with him years of experience in offensive security and application security leadership.

Andreas comes to us from Mnemonic, where he served as Application Security Lead. He has extensive experience in penetration testing, application security, and cloud security. In addition, his background spans both hardware and software development, giving him a uniquely broad skill set that strengthens our offensive security capabilities.

“River Security is an exciting company in growth, with an innovative approach to security and a product I truly believe in. I look forward to contributing with my experience and being part of the journey ahead!”

Andreas Claesson

Before joining River Security, Andreas built a strong profile through years of advanced penetration testing and leadership in application security. His ability to bridge offensive security with deep technical insight in development and cloud environments makes him a rare asset to any security team.

“Andreas brings seniority, technical breadth, and a proven offensive mindset. Combined with his curiosity and leadership experience, he’s exactly the kind of Principal Penetration Tester we’ve been looking for.”

— Chris Dale, Chief Hacking Officer, River Security

Andreas holds dual citizenship in Sweden and Norway, and his international perspective adds further value to our growing Nordic presence.

Outside of security, Andreas is also well-known in the endurance sports community. As an avid runner and established profile within ultramarathon, he brings the same persistence and drive from long-distance races into his professional life. We’re confident he will also be a strong contributor to the training culture and wellbeing focus at River Security.

We’re proud to have Andreas onboard. With his experience, technical depth, and proactive mindset, he adds real firepower to River Security’s offensive side.

Welcome, Andreas – we’re looking forward to what we’ll accomplish together!