Response Engineer - PhishGuard

About the role

Role Summary
As a Response Engineer for PhishGuard, you will serve as the essential human intelligence layer responsible for identifying, tracking, and defeating sophisticated email-borne cyber threats like Business Email Compromise (BEC) and vendor fraud. You will operate within the INTERDICT organization, collaborating closely with internal teams like Detection Engineering, PREDICT (Threat Intelligence), and SIRT to hunt down adversaries and refine global security models.

Role Responsibilities

• Conduct continuous, real-time monitoring of email threat queues to review and analyze sophisticated attacks flagged by Cloudflare Email Security automated systems.
• Investigate customer-reported submissions, execute proactive threat hunts targeting emerging patterns, and perform manual retraction or quarantine of verified malicious emails.
• Provide critical feedback to Detection Engineering to update machine learning models and contribute novel campaign data to global intelligence repositories.
• Identify nuanced threat patterns by correlating technical telemetry with behavioral indicators, generating detailed threat dossiers for impending organizational risks.
• Deliver direct crisis intervention and proactive phone notifications to customers regarding high-dollar BEC threats and active insider risks.
• Lead technical onboarding sessions for new customers, configuring internal system instances with bespoke detection rules, thresholds, and custom allow/block lists.
• Guide customers through their multi-year DMARC implementation journey toward strict "Reject" policy enforcement by conducting SPF and DKIM alignment audits.

Role Requirements (Must-Have Skills)

• Undergraduate degree in Computer Science, Information Security, Information Systems, or equivalent practical experience.
• 5+ years of experience tracking and analyzing complex cyber campaigns utilizing technical indicators such as Domains, IP Addresses, and email headers.
• Proven expertise analyzing, investigating, and defending against highly targeted phishing, invoice fraud, and Business Email Compromise (BEC) attacks.
• Deep working knowledge of core email authentication protocols (SPF, DKIM, DMARC) and aggregate/forensic data interpretation.
• Hands-on experience utilizing AI LLM tools (such as OpenCode or Windsurf) to develop automations for daily analysis and productivity workflows.
• Excellent verbal and written English communication skills, with a strong ability to translate complex technical threats into actionable business intelligence for executive stakeholders.

Nice-to-Have Skills

• Relevant industry certifications such as GCIH, GCIA, CEH, Security+, or equivalent.
• Technical familiarity with regular expressions, YARA rules, SQL query formulation, and malicious file format analysis (e.g., Microsoft Office Documents, Adobe PDFs).
• Prior experience working within managed security services (MSSP) or customer-facing security consulting environments.
• Familiarity with the broader Cloudflare ecosystem, including Cloudflare Email Security, WAF, and Zero Trust architectures.