Cloud Email Security Lead (Hybrid) – Proofpoint & M365

Greenberg Traurig, LLP; Houston (TX); Hybrid; USD 110,000 - 170,000; Full time

Job summary

Greenberg Traurig, LLP is seeking a Senior Cloud Email Security Analyst to join its Technology Team in a hybrid-capable role across Houston offices. You will administer cloud email security platforms, investigate threats, and help protect a large Microsoft 365 environment with a focus on reliability and client service.

You will work with Information Security, Legal, and vendors to implement secure mail flow, authentication controls, and incident response, while providing senior-level guidance

Qualifications

• Bachelor’s degree in Cybersecurity, Information Systems, Computer Science, Information Technology, or a related field, or an equivalent combination of education and relevant experience.
• At least 6 years of progressive experience in enterprise messaging or cybersecurity, including 3 years of direct email security administration in a Microsoft 365 environment.
• Production experience with Proofpoint, Exchange Online, EOP, and Microsoft Defender for Office 365.
• Experience handling complex email security incidents, platform changes, policy updates, upgrades, or service improvements.
• Experience in a large, distributed, highly available, or regulated environment is preferred.

Responsibilities

• Administers, monitors, maintains, and tunes enterprise email security platforms, primarily Proofpoint and Microsoft 365 email security services.
• Supports Exchange Online, Exchange Online Protection, Microsoft Defender for Office 365, and related mail-flow and threat-protection features.
• Maintains and troubleshoots inbound, outbound, internal, application, partner, and secure-relay mail flow in cloud and hybrid environments.
• Manages email authentication and domain-protection controls, including SPF, DKIM, DMARC, TLS, DNS records, certificates, and third-party sender onboarding.
• Investigates phishing, business email compromise, spoofing, malware, malicious links or attachments, account compromise, and other email-related security events.
• Performs message tracing, header and URL analysis, threat hunting, log review, evidence collection, containment, and post-delivery remediation.
• Uses PowerShell and available APIs to automate routine administration, reporting, monitoring, and remediation activities.
• Coordinates with Information Security, Identity, Compliance, Legal, Service Desk, application teams, and vendors on incidents, changes, and email security requirements.
• Creates and maintains technical documentation, procedures, change records, test plans, service reports, and operational metrics.
• Provides senior escalation support, shares knowledge with other support teams, and assists with vendor evaluations, upgrades, and security improvements.
• Participates in disaster recovery, control testing, scheduled maintenance, and an on-call rotation for urgent incidents or service-impacting events.
• Performs other duties as assigned or required.

Skills

Proofpoint administration

Microsoft 365 security

Exchange Online

PowerShell scripting

Graph REST APIs

SIEM concepts

DNS SPF DKIM DMARC

Incident response

Documentation

Cross-team collaboration

Education

Bachelor’s degree in Cybersecurity / Information Technology / Computer Science

Tools

PowerShell

Microsoft Graph

REST APIs

Proofpoint admin tools

Job description

Greenberg Traurig, LLP is seeking a Senior Cloud Email Security Analyst to join its Technology Team in a hybrid-capable role across Houston offices. You will administer cloud email security platforms, investigate threats, and help protect a large Microsoft 365 environment with a focus on reliability and client service.

You will work with Information Security, Legal, and vendors to implement secure mail flow, authentication controls, and incident response, while providing senior-level guidance