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 current 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)

Disclaimer: We encourage you to register at for exploring an exciting career with TCS. At the time of your application to TCS, the personal data contained in your application and resume will be collected by TCS and processed for the purpose of TCS's recruitment related activities. 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.

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