Whether you're an experienced professional or just getting started, your contributions matter at Fortra. If you're passionate about tackling meaningful challenges alongside talented team members committed to helping each other succeed, all while having lots of fun, we want to hear from you. We offer competitive benefits and salaries, personal and professional development opportunities, flexibility, and much more
Cobalt Strike is Fortra's adversary simulation and red team operations platform, used by security teams to emulate advanced threat actor behaviors in controlled, authorized environments. The product helps organizations strengthen security operations and incident response by enabling realistic attack simulation, post-exploitation tradecraft, and collaborative red team engagements.
We are looking for a Senior Cybersecurity Researcher to join the Cobalt Strike team. This is a hands‐on applied R&D; role focused on understanding modern attacker tradecraft, operating system internals, offensive security techniques, and defensive controls,



then turning that research into practical product capabilities. You should be curious about how attacks work under the hood and excited to collaborate with engineers to design, validate, and deliver bleeding‐edge Cobalt Strike features that are safe, responsible, and useful to authorized security teams.
What You'll Do Research modern adversary tactics, techniques, and procedures, with a focus on post‐exploitation tradecraft, endpoint defenses, and attacker behavior.
Analyze security research, malware reports, proof‐of‐concept techniques, and developments in security controls to identify opportunities for Cobalt Strike product improvements.
Work closely with software engineers, product managers, QA, support, and other researchers to turn research findings into practical, maintainable product capabilities.
Prototype, document, and validate new techniques or product ideas in controlled, authorized lab environments.
Help evaluate how

📌 Sr. Cybersecurity Researcher, Cobalt Strike (Madrid)
🏢 Fortra
📍 Madrid