Fantom Corporation is a mission-focused organization supporting critical programs across the defense and intelligence community. We partner with our customers to deliver high-impact technical solutions while fostering a culture built on trust, expertise, and long-term career growth. We are seeking an experienced Cybersecurity Penetration Tester to assess the security of complex enterprise systems, networks, and virtualized environments. This role will conduct hands-on adversarial testing, identify vulnerabilities, analyze security risks, and develop mitigation recommendations to strengthen the overall security posture.