Job Description

Join a high-impact security team leveraging advanced technologies and best practices to safeguard F5's enterprise and product environments. As a Security Engineer III, you will play a key role in handling sophisticated security incidents, performing deep-dive investigations, and supporting incident response efforts. You will serve as an escalation point for SOC L1/L2 analysts while driving improvements in detection capabilities, response processes, and overall security posture.

Key Responsibilities

Lead and manage complex security incidents, including malware outbreaks, insider threats, APTs, and data exfiltration events
Perform root cause analysis (RCA) and recommend remediation strategies
Collaborate with IT, DevOps, and business teams during incident response activities
Design, tune, and optimize SIEM use cases and detection rules
Enhance alert quality by reducing false positives and improving detection accuracy
Implement automation through SOAR platforms
Act as the final escalation point for L1 and L2 SOC analysts
Mentor junior analysts and provide technical leadership
Develop and maintain security runbooks, documentation, and incident response playbooks
Prepare detailed incident reports and executive summaries
Conduct post-incident reviews and facilitate lessons learned sessions
Adhere to F5 information security policies to protect organizational assets
Perform additional responsibilities as needed while embodying F5 core behaviors.

Required Skills & Experience

7+ years of experience in SOC or cybersecurity, with strong incident response and L3 SOC expertise
Deep knowledge of SIEM platforms and EDR/XDR tools (e.g., Microsoft Defender, CrowdStrike)
Strong skills in log analysis and scripting (Python, PowerShell, Bash)
Experience in cloud security (Azure, AWS, GCP) and identity security (Active Directory, Azure AD)
Ability to perform effectively under pressure during high-severity incidents
Excellent communication, reporting, and documentation skills
Strong analytical thinking and problem-solving abilities

Preferred Qualifications

Certifications such as CEH, ECSA, GCIH (SANS), or equivalent
Experience with ServiceNow, Azure DevOps (ADO), or similar case management tools
Strong collaboration and interpersonal skills
Demonstrated ability to lead and mentor junior team members
Ability to present technical findings and recommendations to leadership clearly

Work Environment

Full-time role with potential shift flexibility
Participation in a shared on-call rotation, including early mornings, evenings, weekends, and holidays
Primarily desk-based work with remote collaboration across global teams

Security Engineer III

Job Description

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