Email Security Engineer (Microsoft 365 & Defender)

Galent; New York (NY); Hybrid; USD 95,000 - 135,000; Full time

Job summary

Galent in New York is seeking a Microsoft 365 / Email Security Engineer to secure and optimize enterprise messaging environments, with hands‑on experience in Proofpoint or Defender for Office 365 and Exchange Online.

You will design, implement, and maintain email security controls, manage mail flow, SPF/DKIM/DMARC, and collaborate with Cybersecurity and Infrastructure teams on modernization initiatives.

Qualifications

• Hands-on experience with Proofpoint or Microsoft Defender for Office 365.
• Strong SMTP/mail flow and email routing experience.
• Experience implementing SPF, DKIM, and DMARC.
• Experience protecting against phishing, BEC, malware, spam and spoofing.
• Strong Exchange Online / Microsoft 365 experience.
• Exposure to email security architecture and solution design.

Responsibilities

• Design, implement, and maintain enterprise email security solutions using Proofpoint or Defender for Office 365.
• Manage and troubleshoot SMTP, mail flow, routing, connectors, and email delivery across enterprise environments.
• Implement and maintain SPF, DKIM, and DMARC for email authentication and anti‑spoofing.
• Develop and maintain security controls against phishing, BEC, malware, spam, and spoofing.
• Administer and support Exchange Online / Microsoft 365 messaging environments.
• Collaborate with Cybersecurity, Infrastructure, Network, Risk, and other teams.
• Support security enhancements, migrations, and enterprise messaging transformation initiatives.

Skills

Proofpoint

Defender 365

SMTP Mail Flow

SPF DKIM DMARC

BEC & Phishing

Exchange Online

Email Security

Security Architecture

Job description

Galent in New York is seeking a Microsoft 365 / Email Security Engineer to secure and optimize enterprise messaging environments, with hands‑on experience in Proofpoint or Defender for Office 365 and Exchange Online.

You will design, implement, and maintain email security controls, manage mail flow, SPF/DKIM/DMARC, and collaborate with Cybersecurity and Infrastructure teams on modernization initiatives.