GMS - Senior - Proofpoint Professional

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Role Summary

The Proofpoint L3 Operations Engineer serves as the technical SME for the Proofpoint environment and is responsible for advanced troubleshooting, platform optimisation, configuration management, security enhancements, integrations, and engineering support. The role owns complex incidents, problem management, and platform improvements.

Key Responsibilities

Advanced Troubleshooting

• Resolve complex email delivery and security incidents.
• Perform deep-dive analysis of:
• Mail flow failures
• TAP detections
• DLP events
• Email authentication failures
• Encryption issues
• Analyse SMTP transactions, logs, headers, and threat intelligence data.

Platform Engineering Administration

• Design and implement:
  • Security policies
  • DLP rules
  • TAP policies
  • Encryption policies
  • Threat detection tuning
• Configure:
  • SPF
  • DKIM
  • DMARC
  • Secure Email Relay
  • MX Routing
• Support tenant expansion and implementation initiatives.

Security Enhancements

• Optimise threat detection and false-positive reduction.
• Evaluate emerging email threats and protection strategies.
• Provide security recommendations to leadership and stakeholders.

Integrations

• Integrate Proofpoint with:
  • Microsoft 365
  • Exchange Online
  • SIEM platforms
  • Splunk
  • Sentinel
  • Threat Intelligence platforms
• Support API-based integrations and automation initiatives.

Problem Change Management

• Lead root cause analysis activities.
• Own problem records and long-term remediation plans.
• Review and approve platform changes.
• Participate in CAB activities.

Technical Leadership

• Mentor L1 and L2 engineers.
• Develop operational runbooks and knowledge articles.
• Provide escalation support during major incidents.

Required Skills

Proofpoint Expertise

• Proofpoint Email Protection
• Proofpoint TAP
• Proofpoint Threat Response
• Proofpoint DLP
• Proofpoint Encryption
• Email Fraud Defence (Good to Have)

Advanced Technical Skills

• SMTP Protocol Analysis
• Exchange Online
• Microsoft 365 Security Stack
• Email Authentication Frameworks (SPF, DKIM, DMARC)
• Secure Email Gateway Architecture
• DNS MX Routing Design
• API Integrations
• PowerShell Scripting

Security Knowledge

• Phishing Protection
• Malware Analysis
• Threat Hunting
• Email Security Architecture
• Incident Response
• Data Loss Prevention

Monitoring Analytics

• Splunk
• Microsoft Sentinel
• Defender for Office 365
• SIEM Correlation

Experience

• 6-10 years of Cybersecurity or Messaging Security experience.
• 4+ years of hands-on Proofpoint administration and engineering.
• Experience in enterprise-scale email security environments.

Preferred Certifications

• Proofpoint Certified Professional (PCP)
• Proofpoint Certified Guardian
• Microsoft Security Operations Analyst
• Certified Information Systems Security Professional (CISSP)
• ITIL Foundation

Nice-to-Have Skills

• Microsoft Defender for Office 365
• Mimecast
• Cisco Secure Email
• Exchange Hybrid
• Azure Automation
• Python/PowerShell Automation
• Security Operations Centre (SOC) experience

EY Managed Services Expectations

• Strong ITSM discipline (Incident, Problem, Change, Request Management)
• Queue ownership and SLA adherence
• 24x7 support participation
• Continuous service improvement mindset
• Excellent stakeholder communication and reporting skills

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