Assistant Manager / Deputy Manager - IT Security & Support

Purpose of the Role

We are looking for a technically proficient L2/L3 Support Engineer with in-depth knowledge of

FortiGate firewall administration, LAN/WAN networking, Windows Server, Linux SMTP

(CentOS), and Gmail/Google Workspace or any other email solution. The role involves

supporting day-to-day IT operations, network/security troubleshooting, server/email

management, and vendor coordination with Tata Communications and AWS.

Key Responsibilities

Firewall & Network Support (FortiGate | L2/L3):

• Perform L2/L3 support for FortiGate firewall (rules, NAT, UTM, VPN, SD-WAN).

• Manage FortiCloud portal, logs, and security posture.

• Use Fortinet APIs for configuration backups, automation, and policy updates (L3).

• Troubleshoot and maintain LAN/WAN connectivity, VLANs, switch port

configurations, DHCP conflicts, and routing issues.

• Implement and manage site-to-site and SSL VPNs (creation, monitoring,

troubleshooting).

Windows Server Support (L2/L3):

• Manage Active Directory, DNS, DHCP, Group Policies, and user/group access control.

• Perform regular patch management, updates, and monitoring of Windows servers

(20122022).

• Handle system errors, event log review, and escalate deeper issues to infra team as

needed (L3 escalation if beyond routine maintenance).

Email Administration (Gmail / SMTP / CentOS or others):

• Provide L2 support for Gmail/Google Workspace, manage user accounts, groups, and

aliases.

• Manage SPF, DKIM, DMARC DNS records.

• Support and monitor SMTP mail server on CentOS (e.g., Postfix/sendmail), including

delivery issues, log review, and basic configuration changes.

• Escalate mail queue or MTA-level issues to L3 or vendor when needed.

Cloud & Vendor Liaison:

• Coordinate with Tata Communications for MPLS, Leased Line, and Internet

connectivity tickets.

• Raise support requests and perform L2-level diagnostics for hosted AWS EC2/VPC

issues (e.g., network/firewall/VPN).

• Assist in VM provisioning, IP allocation, or VPN setup on AWS (with L3 supervision).

Patching & Documentation:

• Assist in patch rollouts (Windows & Linux) used internally.

• Define / Update the SOP for Patch management

• Document network topologies, firewall rules, server configurations, and

troubleshooting steps.

• Maintain change logs, ticket history, and support documentation.

Key skills and competencies:

• Bachelors degree in IT, Computer Science, or related field.

• 68 years of experience in L2/L3 infrastructure support.

• Fortinet NSE 4 or higher strongly preferred.

• Microsoft Certified: Windows Server Admin (MCSA or equivalent preferred).

• Linux experience (CentOS/RHEL) preferred.

• Ability to work under pressure and resolve issues efficiently.

• Excellent documentation, communication, and troubleshooting skills.

• Self-motivated with a problem-solving attitude.

Category Tools/Platforms

Firewall FortiGate, FortiCloud, FortiAnalyzer (L2/L3)

Networking LAN/WAN, DHCP, DNS, VLAN, NAT, VPN

Servers Windows Server 20122022, AD, GPO,DNS

Backup Windows Native / Vembu or other

Email Gmail Admin, SPF/DKIM/DMARC, SMTP on CentOS

Cloud AWS EC2, VPC, Security Groups, VPN (basic)

Monitoring PRTG, Zabbix, FortiView, log analysis

Scripting PowerShell (basic), Bash (basic preferred)

Compliance: Should be compliant with ISO 27000 and ISO audit guidelines