Expert
Lead System Engineer-Microsoft Exchange Expert
Key Responsibilities
-
Architect and manage complex Cisco IronPort ESA deployments (physical & virtual), including high availability, clustering, and disaster recovery strategies.
-
Lead Tier-3/L4 troubleshooting for critical email security incidents, performing protocol-level analysis (SMTP, DNS, TLS) and root cause investigations.
-
Design and enforce security policies for spam filtering, malware protection (AMP), DLP, encryption, and outbreak filters to meet compliance and regulatory requirements.
-
Plan and execute migrations, upgrades, and capacity expansions for Cisco ESA appliances in large-scale environments.
-
Develop and execute test plans for new features, configurations, and integrations with Microsoft Exchange and Microsoft 365.
-
Integrate ESA with Security Management Appliance (SMA) for centralized reporting, quarantine management, and policy orchestration.
-
Automate operational tasks using CLI, scripting (Python/Bash), and APIs to improve efficiency and reduce manual overhead.
-
Collaborate with cross-functional teams (Messaging, Network, Security) to ensure seamless mail flow and secure integration with firewalls, DNS (SPF/DKIM and DMARC), and Active Directory.
-
Maintain comprehensive documentation for architecture, configurations, troubleshooting guides, and operational playbooks.
-
Provide technical leadership and mentorship to junior engineers and support teams.
Required Skills & Expertise
-
8+ years of experience in enterprise email security and messaging platforms, with 5+ years dedicated to Cisco IronPort ESA in large, complex environments.
-
Strong knowledge of SMTP, DNS, FTP, SSH, TCP/IP, and secure mail routing principles.
-
Expertise in Cisco ESA features: AMP, DLP, encryption, content filtering, reputation-based controls, and outbreak filters.
-
Hands-on experience with policy design, disaster recovery planning, and risk analysis for email security.
-
Proficiency in UNIX/Linux administration, scripting (PowerShell, Python, Bash), and automation frameworks.
-
Solid networking knowledge, including firewalls, NAT, subnetting, and load balancing.
-
Experience integrating ESA with Microsoft Exchange (2016/2019) and Microsoft O365 environments.
-
Familiarity with Active Directory/LDAP for directory integration and authentication.
-
Strong written and verbal communication skills for documentation and stakeholder engagement.
Sign up to apply and find out right away if you're a fit.
Is this role right for you?
Your agent will tell you — in seconds.
Sign up and I'll tell you right away how well Société Générale matches you — what you already have, and what's missing. Then I stay on it: I search for you and only write when I find something worth your time.