Iron Port Admin

TCS has been a great pioneer in feeding the fire of Young Techies like you. We are a global leader in the technology arena and there's nothing that can stop us from growing together.
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 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.
Minimum Qualification:
15 years of full-time education
Virtual Interview on 18th Sep 2026 (Friday)
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Your personal data will be retained by TCS for as long as TCS determines it is necessary to evaluate your application for employment as per our retention policy. You have the right to request TCS for temporary/permanent exclusion of your candidature from any recruitment related communication . For any such request you may write to careers.tcs.com.

Work arrangement
No