Senior Email Security Administrator

• Act as the organization’s de facto Email Security Administrator who owns the design, deployment, and ongoing operations for the organization’s Secure Email Gateways (Mimecast, Proofpoint Tessian)
• Design and own the email security architecture across Mimecast, Tessian, and Microsoft 365 and Exchange Online, ensuring robust protection against threats
• Drive and own policy tuning, balancing security with favorable user experience, and work towards reducing false positives in email security systems and end-user alerts
• Serve as the primary point of contact for email and messaging security initiatives, ensuring effective communication and collaboration with Global Cyber Fusion Center Incident Response and IT Messaging/Ops teams and other stakeholders
• Regularly generate security posture and KPIs to senior management to ensure accountability
• Document runbooks and technical SOPs for process alignment and to describe technical specifications for email security infrastructure and related policies
• Assist with investigations and responses for high-severity email threats, including phishing, impersonation, and business email compromise (BEC)
• Work with Global Cyber Fusion Centre Security Operations Center (SOC), IT and Compliance teams to align processes and escalation protocol
• Support audits, risk assessments, and security reviews to maintain compliance and enhance security measures
• Evaluate next generation cyber solutions related to Email and DLP
• Provide security advisory and best-practice recommendations that align with the organization’s risk profiles and business objectives

• Bachelor’s degree in computer science, Information Security, or related professional experience
• 7+ years of experience in Cybersecurity, with a strong focus on Email and Messaging Security
• Extensive, hands-on experience administering Mimecast, Proofpoint Tessian Secure Email Gateways as an enterprise email security administrator
• Proven experience securing Microsoft 365 and Exchange Online environments with a solid understanding of Entra ID for users and group management
• Strong knowledge of phishing, social engineering, and BEC threats, along with email authentication protocols (SPF, DKIM, DMARC) and encryption standards (TLS)
• Familiarity with SIEM/SOAR integrations (e.g., Splunk, Sentinel, QRadar)
• Relevant security certifications such as CISSP, Security+ with certifications specific to administering Secure Email Gateways (e.g., Ironport, Mimecast, Proofpoint)
• Experience supporting regulated organizations ensuring compliance with industry standards. (e.g. GDPR)
• Ability to collaborate with colleagues across the enterprise and to work effectively in matrixed, geographically distributed teams around the globe
• Structured mindset, strong attention to detail, and organized
• Positive attitude and outstanding, proactive problem-identification and problem-solving skills
• Self-motivated and able to complete projects with minimal supervision
• The ability to work under pressure, balance competing priorities, meet deadlines, and maintain operations
• Collaborate effectively with cross-functional IT teams

Experience in Microsoft Purview with Data Loss Prevention (DLP) and user behavior analytics is a big plus

• Support for professional accreditations
• Flexible arrangements, generous holidays, plus an additional day off for your birthday
• Continuous mentoring along your career progression
• Active sports, events and social committees across our offices
• 24/7 support available from our Employee Assistance Program
• The opportunity to invest in our growth and success through our Employee Share Plan
• Plus additional local benefits depending on your location