Mid-Level Email Security Expert

ManTech seeks a motivated, career and customer-oriented Email Security Expert to join our team in Stennis, MS.

The NOSC Email Security Expert monitors, analyzes, and enhances email security to protect Networks from phishing, malware, and other cyber threats. They configure and optimize email security tools, investigate suspicious email activity, and implement policies to strengthen overall cybersecurity posture.

Responsibilities include, but are not limited to:

• Design, implement, and develop advanced email security solutions to protect email systems from cyber threats, including phishing, malware, and other email-borne attacks
• Monitor and analyze email traffic for signs of malicious activity, employing advanced threat detection techniques; Provide expert guidance and recommendations on email security best practices to stakeholders
• Develop and enforce email security policies, standards, and procedures; Conduct training and awareness programs for DHS staff on email security practices
• Conduct regular security assessments and vulnerability scans on email systems; Prepare detailed reports on security incidents, findings, and recommended actions
• Collaborate with vendors and other security teams to investigate and respond to security incidents and outages involving email
• Provide expert guidance and recommendations on email security best practices to stakeholders.
• Contributes to and executes the design, development, and implementation of the NOSC's portion of the enterprise email security program. Interacts, coordinates, and collaborates with the Microsoft Office 365 and identity teams, working with external email security vendors (e.g., Proofpoint)

Minimum Qualifications:

• 8 years of experience in email security, with a strong focus on threat detection and mitigation and a Bachelor’s degree in computer science, information technology, cybersecurity, or a related field of study.
• In-depth knowledge of email security protocols (e.g., SMTP, DMARC, DKIM, SPF) and encryption technologies
• Proficiency with email security tools and platforms (e.g., Proofpoint, Mimecast, Cisco Email Security, Microsoft Defender for Office 365)
• Experience with Security Information and Event Management (SIEM) systems Strong understanding of cyber threat intelligence and incident response processes

Preferred Qualifications:

• Certified Information Systems Security Professional (CISSP), Certified Information Security Manager (CISM), Certified Ethical Hacker (CEH), or similar are highly desirable.
• Master’s degree
• Experience working in a government or defense environment (familiarity with DHS policies and procedures a plus)
• Knowledge of broader cybersecurity frameworks (e.g., NIST, ISO 27001)

Clearance Requirements:

• Must have a current/active Secret clearance with the ability to obtain and maintain a TS/SCI.
• The ability to obtain and maintain a DHS EOD suitability is required prior to starting this position.

Physical Requirements:

• Must be able to work in an office environment and maneuver in data center and other IT equipment installation locations.
• Constantly operates a computer and other office productivity machinery, such as a calculator, copy machine and computer printer
• Ability to lift and carry 75 lbs for distances up to 50 feet