Senior System Administrator

Key Responsibilities:

Firewall and Network Security

• Manage Fortinet firewalls (Multi Location).
• Configure VPNs, user-based policies, and URL filtering.
• Analyse traffic and bandwidth utilization; identify top resource consumers.

LAN/WAN & ISP Management

• Plan and segregate VLANs and IP segments.
• Maintain switches (Fortinet/Cisco) and Aruba wireless controllers.
• Monitor bandwidth usage and handle outages.

Server and Data Centre Operations

• Administer Windows & Linux servers.
• Handle dell servers and hardwares
• Manage infrastructure via Proxmox and virtual clusters.

Storage & Backup

• Monitor and manage NetApp SAN, Synology NAS.
• Implement Rsync replication, Synology Hybrid Backup, AWS S3 lifecycle policies.
• Configure Veeam & Proxmox backup systems.

Email, DNS & SSL Management

• Google Workspace administration (user, group, audit logs, PST migration).
• DNS management via GoDaddy subdomains, mappings.
• SSL certificate installation, renewal, and tracking.

Active Directory & User Management

• AD user/group/OU policy management.
• Patch management and OS updates.

Cloud & Billing Management

• Manage multi-account AWS and GCE environments.
• Monitor resource utilization, optimize billing, and prepare cost reports.
• Monthly cloud invoice tracking and reporting.

Desktop Support & IT Asset Management

• Internal support: onboarding, system config, ISMS compliance.
• Asset inventory management.
• License management.

VOIP & Communication Systems

• Handle EPABX, VOIP SIP configuration and quality issues.
• Allocate/transfer extensions and update usage reports.

Team & Client Management

• Assign daily/weekly tasks; conduct KT sessions.
• Provide support for offshore clients.
• Perform requirement analysis and provide infrastructure architecture estimates.

Reporting & Documentation

• Maintain Infra performance reports, Timesheets, Capacity Plan, etc.
• Maintain vendor, floor plan, VPN user list, software licenses.
• Ensure compliance with ISMS/ISO policies.

Required Technical Skills:

• Proxmox, Veeam, Synology NAS
• Fortinet Firewalls, Aruba IAPs
• AWS, Google Cloud (GCE), S3 lifecycle
• Active Directory, Windows/Linux Servers
• Google Workspace, Office 365
• DNS/SSL (GoDaddy), Jira/GLPI

Soft Skills & Capabilities:

• Strong communication & documentation
• Vendor management
• Team leadership and mentoring
• Cross-functional collaboration (with Offshore teams)
• ISO/ISMS policy awareness

Qualification:

• Any Graduate (Preferably B.E / B.Tech / MCA)
• Certifications preferred: AWS/GCP, Fortinet NSE, ITIL

careers.tag@techaffinity.com

Thanks,

HR Team