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Experience Range: 9 – 14 Yrs
Location : Bang/Chennai
What we are looking for
Must Have
- 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.

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 orchest

📌 Iron Port Admin (Bengaluru)
🏢 Tata Consultancy Services
📍 Bengaluru