Location:
4910 Tiedeman Road, Brooklyn Ohio
Position Summary
Our Cyber Adversary and Exposure Mgmt. team rolls up into Key’s broader Cyber Defense function within Corporate Information Security. Cyber Defense’s mission is simple: We aim to Deter, Detect, Deny, and Disrupt adversaries through proactive threat centric defense.
The Senior Offensive Security Engineer is a key member of the Cyber Defense Cyber Adversary and Exposure Mgmt. team, responsible for simulating advanced persistent threats (APTs) and emulating real-world adversaries to assess and improve KeyBank’s detection, response, and resilience capabilities. This role goes beyond traditional red teaming and penetration testing by incorporating threat intelligence, custom tooling, and stealthy tradecraft to test the effectiveness of security controls and incident response processes.
The ideal candidate will have prior extensive experience in adversary simulation, red teaming, and offensive security operations across hybrid environments (on-prem, cloud, and physical). This role requires advanced technical acumen, creativity, and the ability to communicate complex findings to both technical and executive audiences.
Key Responsibilities
Lead and execute adversary emulation engagements using intelligence-driven threat scenarios aligned with frameworks such as MITRE ATT&CK.
Design and conduct full-scope red team operations, including initial access, lateral movement, privilege escalation, and data exfiltration simulation.
Conduct physical, external/internal, and wireless network assessments, as well as web and mobile application testing.
Lead security assessments across cloud platforms (Google Cloud, Microsoft Azure, AWS) and embedded systems.
Develop and test threat actor emulation tools, tactics, and procedures for the Red Team to employ on-demand in assessments of application, system, cloud, and network security controls.
Employ these tools and techniques in the KeyBank environment with minimal supervision while also mentoring the team in their safe and responsible usage.
Partner with the Cyber Threat Intelligence team to ensure Red Team capabilities and tactics accurately reflect the current threat landscape and real-world-TTPs are translated into emulation plans.
Lead cross-functional teams during project testing phases and architectural design reviews to ensure appropriate security controls are in place to mitigate threats.
Coordinate and monitor third-party penetration testing engagements, ensuring alignment with requirements, effective communication, and timely, accurate reporting.
Create Red Team metrics and reporting to track program effectiveness and stakeholder visibility.
Lead efforts to track remediation of findings to completion through coordination with application and technology system owners.
Expand the team’s capabilities through:
Creation of custom tools and automation frameworks.
Research and development of novel offensive techniques and tradecraft.
Incorporation of threat actor intelligence into emulation scenarios.
Delivery of internal presentations and knowledge-sharing sessions.
Evaluate the effectiveness of detection and response capabilities across SOC, EDR/XDR, SIEM, and other security layers.
Provide detailed post-mortem reports and executive briefings with prioritized recommendations.
Mentor junior team members and contribute to the development of adversarial tradecraft within the team.
Build a relationship with blue teams to conduct purple team exercises and improve detection engineering.
Contribute to the continuous improvement of adversarial emulation methodologies, tooling, and documentation.
Required Qualifications
Master’s in computer science, Cybersecurity, or related field—or equivalent experience.
8+ years of experience in Red Team or Penetration Testing roles.
Proficiency with Red Team tools and Command & Control (C2) frameworks.
Strong scripting and programming skills in PowerShell, Python, JavaScript, Bash, Golang or similar…