Sr. Security Engineer

Robert HalfChicago, United States
Full TimeOn-siteMidLimited info disclosed
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Description

This position partners closely with Detection Engineering, Threat Hunting, Incident Response, and Purple Team functions to ensure red team engagements drive measurable improvements in detection coverage, response effectiveness, and overall defensive posture. About the Role While the role does not own enterprise-wide red team strategy, it plays a key role in shaping red team tactics, tooling, and execution standards, and in translating offensive findings into actionable defensive outcomes. Responsibilities Executing adversary emulation and red team engagements aligned to real-world threat actor techniques and objectives Performing hands-on offensive operations, including initial access, persistence, privilege escalation, lateral movement, and command-and-control Developing, maintaining, and safely using custom red team tooling, scripts, and techniques Working closely with detection and threat hunting teams to validate detections and response effectiveness during red and purple team exercises Assisting in the design and execution of assumed breach scenarios and multi-stage attack chains Identifying control gaps, detection blind spots, and architectural weaknesses across enterprise environments Supporting incident response teams during complex investigations by providing attacker tradecraft insight Producing clear, actionable reporting that translates technical findings into operationally relevant recommendations Contributing to the improvement of red team processes, safety controls, and engagement playbooks Mentoring junior analysts and contributing to skills development across the security operations team Qualifications 5+ years of experience in red teaming, penetration testing, or offensive security, with demonstrated hands-on impact Bachelor’s degree or equivalent practical experience Required Skills Strong knowledge of attacker tradecraft and TTPs across modern enterprise environments Hands-on experience attacking and evading controls in endpoint, identity, cloud, and hybrid infrastructures Working understanding of defensive security technologies, such as EDR, SIEM, identity protection, and cloud security controls Experience collaborating in purple team exercises and adapting techniques based on detection feedback Ability to independently plan and execute offensive tasks within a defined engagement scope Strong written and verbal communication skills, including technical documentation and reporting High ethical standards and experience operating within defined rules of engagement Preferred Skills Experience executing threat-intelligence-informed adversary emulation, not just vulnerability-driven testing A track record of helping convert red team findings into improved detections or response playbooks Strong scripting or automation skills (e.g., Python, PowerShell, Bash) to support tooling and operations Familiarity with MITRE ATT&CK for mapping activity and communicating impact Experience operating in regulated or large enterprise environments “Our specialized recruiting professionals apply their expertise and utilize our proprietary AI to find you great job matches faster.”