Senior Offensive Security Researcher

About the role

As a Senior Offensive Security Researcher you will investigate the latest attack techniques and exploits, creating proofs of concept and detection signatures that protect millions of endpoints worldwide. You will collaborate with top security researchers and the Threat Intelligence team to close gaps in our detection capabilities.

Key responsibilities

• Research and emulate sophisticated attack techniques, designing behavioural detection signatures.
• Develop tools, automation flows and proofs of concept for emerging exploits.
• Partner with Threat Intelligence and engineering teams to highlight detection gaps and improve visibility.

Required profile

• 4+ years of experience in Red Teaming, security or offensive research with deep Windows internals knowledge.
• Hands‑on coding experience in Python and C/C++.
• Strong background in malware analysis, reverse engineering (x86/x64) and EDR internals.

Required skills

• Python
• C/C++
• Windows internals
• Malware analysis (static and dynamic)
• Reverse engineering (x86/x64)
• EDR internals and detection signature writing
• Agentic AI workflows for analysis and detection engineering

What we offer

• Salary starting from 3500 EUR per month plus performance bonus.
• Equity through RSUs and employee stock purchase plan.
• Flexible time off, wellness allowance and hybrid work in Prague, Brno or remote in CZ/SK.
• Comprehensive health, life and disability insurance, pension contributions and global travel medical coverage.