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Hyundai AutoEver America Logo Hyundai AutoEver America · IT - Administration

Cyber Defense Head of Department

United States, Irvine 181240.00 - 259160.00 USD / Year · Job Posted January 10, 2026
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Job Description

The Cyber Security Defense Head of Department (HOD) will lead and mature our organization’s end-to-end defensive security capabilities. This senior leadership role oversees the Security Operations Center (SOC), Blue Team, Red Team, Penetration Testing, Incident Response, Threat & Vulnerability Management (TVM), Application Security, and Adversary Simulation functions. The ideal candidate is both a visionary leader and a seasoned technical expert capable of building high-performing teams, implementing modern security practices, and driving continuous improvement across all cyber defense operations functions.

Job Responsibility

  • Develop and execute the Cyber Defense strategy aligned with organizational goals, customer requirements and the evolving threat landscapes
  • Establish frameworks, processes, and KPIs for SOC, Incident Response, TVM, AppSec, Red/Blue Teaming, and Adversary Simulation
  • Serve as a senior advisor to the CISO and executive leadership on cyber risks, readiness, and emerging threats
  • Oversee 24x7 SOC operations, ensuring effective monitoring, detection, and response to security events, across levels 1-3
  • Drive continuous enhancement of detection engineering, threat hunting, and security analytics
  • Implement best-in-class security tooling, automation, and operational processes
  • Lead internal Red Team and offensive security capabilities, including penetration testing
  • Define testing methodologies, operational rules of engagement, and reporting standards
  • Translate offensive findings into actionable improvements for defensive teams and architecture
  • Oversee the Incident Response program, ensuring rapid and effective handling of security incidents
  • Lead tabletop exercises, simulation drills, and readiness assessments
  • Facilitate and lead high/critical incident responses, when the Incident Response Manager is unavailable
  • Coordinate with legal, communications, and executive stakeholders during major incidents
  • Own the enterprise-wide vulnerability management strategy, including prioritization, remediation, and reporting
  • Drive continuous scanning, assessment, and metrics to reduce risk across infrastructure, applications, and cloud environments
  • Collaborate with engineering and operations teams to ensure timely and effective remediation
  • Facilitate and the zero-day vulnerability response process, when the Incident Response Manager is unavailable
  • Lead the organization’s AppSec program, including secure SDLC practices, code reviews, SAST/DAST tools, and developer enablement
  • Partner with software engineering to embed security into product and platform design
  • Develop and run adversary simulation programs that mimic real-world threat actors
  • Use intelligence-led scenarios to evaluate detection capabilities, response effectiveness, and organizational resilience

Requirements

  • 15–20 years of progressive experience across the various cyber defense disciplines (SOC, Incident Response, Red/Blue teams, or similar defensive/offensive functions)
  • Proven experience leading cyber defense teams
  • Demonstrated ability to hire, mentor, and lead high-performing technical teams
  • Bachelor’s degree in Cybersecurity, Information Technology, Computer Science or a related discipline
  • Strong knowledge of threat detection, incident response, adversary tactics (MITRE ATT&CK), vulnerability management, and secure software development
  • Excellent incident management, communication, and executive reporting skills
  • Proficient in English for effective communication and coordination
  • In the absence of IR team members, utilize a flexible work schedule to facilitate the security incident response process for high/critical incidents

Nice to have

  • Masters degree in Cybersecurity, Information Technology, Computer Science or a related discipline is preferred
  • Industry-recognized credentials such as CISSP, CISM, OSCP/OSCE, GIAC (GSEC, GCIA, GCIH, GPEN, GXPN) are highly desirable
  • Familiarity with, and prior participation with FIRST (Forum of Incident Response and Security Teams) is preferred
  • Bi-lingual in English and Korean language proficiency is preferred to support global coordination and communication
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