Staff Informaiton Security Engineer - Threat Defense & Automation
About the position We’re seeking a Staff Information Security Engineer to help lead and evolve our Global Information Security Operation. In this role, you’ll shape incident response strategy, push forward advanced threat detection and defense capabilities, and take point on the most complex security investigations across the enterprise. As a Staff-level engineer, you will operate as a subject matter expert and technical leader, partnering across SOC, Threat Intelligence, Detection Engineering, and Security Engineering to improve Proofpoint’s ability to detect, respond to, and proactively hunt advanced threats. This role includes participation in a 24/7 on-call incident response rotation.
Responsibilities
- Serve as a Level 3 / Staff escalation point for high-severity incidents.
- Lead investigations into APTs, ransomware, insider threats, and cloud compromises.
- Act as incident commander and coordinate response efforts.
- Participate in 24/7 on-call incident response.
- Lead threat hunting across endpoint, network, identity, and cloud.
- Operationalize threat intelligence into detections and response.
- Design and improve detections across SIEM, EDR, and SOAR.
- Automate incident triage and response workflows.
- Drive post-incident reviews and continuous improvement.
- Mentor team members and influence security strategy.
Requirements
- 12+ years in Incident Response, DFIR, Threat Hunting, or Security Operations.
- Deep expertise in incident response, threat hunting, and threat intelligence.
- Strong knowledge of MITRE ATT&CK and adversary TTPs.
- Experience with SIEM, EDR, SOAR, and cloud security.
- Scripting experience (Python, PowerShell, or Bash).
- Strong communication and leadership skills.
- US Citizen.
Nice-to-haves
- Experience building threat hunting or detection programs.
- Background in threat intelligence or red/purple teaming.
- Certifications such as GCFA, GCIH, CISSP, CISM, OSCP.
Benefits
- Competitive compensation
- Comprehensive benefits
- Career success on your terms
- Flexible work environment
- Annual wellness and community outreach days
- Always on recognition for your contributions
- Global collaboration and networking opportunities
- flexible time off
- a comprehensive well-being program with two paid Wellbeing Days and two paid Volunteer Days per year, plus a three-week Work from Anywhere option
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