Network Security Engineer

Senior Network Administrator – NIIT (Remote / On‑Site)

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About NIIT

Since 1981, NIIT has been a global leader in learning and talent development, helping organizations across 30 countries build high‑impact learning ecosystems. Our managed‑learning solutions blend learning theory, cutting‑edge technology, and operational excellence to drive measurable business value. Join a company that is transforming how the world learns—every day.

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Position Overview

The Senior Network Administrator will design, implement, manage, and support NIIT’s enterprise‑wide network infrastructure. You will ensure high availability, security, and optimal performance of LAN, WAN, WLAN, and VPN environments while partnering with IT leadership and cross‑functional teams to enable seamless business operations and continuous technology improvement.

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Key Responsibilities

Area	Responsibilities
Network Administration & Maintenance	• Configure, maintain, and troubleshoot LAN, WAN, WLAN, and VPN architectures. • Manage routers, switches, firewalls, load balancers, and related hardware. • Perform firmware/software upgrades on network devices (WLCs, switches, firewalls, routers).
Network Security	• Implement and enforce security policies (firewalls, IPS/IDS, ACLs, VPNs). • Conduct regular security audits, vulnerability assessments, and risk‑mitigation activities. • Manage secure remote‑access solutions and ensure compliance with cybersecurity standards.
Monitoring & Incident Management	• Use approved monitoring tools (e.g., SolarWinds, PRTG, Cisco DNA Center) to track device health and traffic. • Respond to alerts, analyze logs/packet captures, and generate actionable reports. • Lead root‑cause analysis and remediation for network incidents.
Physical & Logical Infrastructure	• Install, rack, and de‑rack network equipment; perform cable management and labeling. • Coordinate with ISPs and vendors for internet link provisioning, network tunnels, and SLA compliance.
Wireless Solutions	• Configure and troubleshoot Cisco wireless controllers and access points. • Optimize RF design, perform site surveys, and manage SSID/guest‑network policies.
Layer‑2/Layer‑3 Expertise	• Operate L2/L3 switches and ISR routers; manage spanning‑tree, VTP, 802.1Q VLANs, and loop‑prevention protocols. • Design and implement routing protocols (OSPF, EIGRP, BGP) as required.
Firewall Management	• Hands‑on administration of Cisco ASA/FTD/FMC, Fortinet, and Palo Alto firewalls. • Create and maintain security policies, NAT rules, and VPN configurations.
Continuous Improvement	• Evaluate emerging networking technologies and recommend upgrades. • Document network diagrams, SOPs, and change‑management records.

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Required Qualifications

Requirement	Details
Education	Bachelor’s degree in Computer Science, Information Technology, or related field (or equivalent experience).
Experience	5+ years of enterprise network administration (LAN/WAN/WLAN/VPN).
Certifications	• Cisco CCNP (or higher) – required. • Cisco CCIE, Fortinet NSE, Palo Alto PCNSE, or equivalent – preferred.
Technical Skills	• Deep knowledge of Cisco IOS/IOS‑XE, NX‑OS, and ISR platforms. • Proficiency with Cisco ASA/FTD/FMC, FortiGate, Palo Alto firewalls. • Strong command‑line and GUI experience for switches, routers, and wireless controllers. • Familiarity with network monitoring tools (SolarWinds, PRTG, Wireshark, NetFlow, SNMP). • Hands‑on experience with VPN technologies (IPsec, SSL, DMVPN).
Security Acumen	• Experience conducting security audits, vulnerability scans, and remediation. • Understanding of industry standards (ISO 27001, NIST, PCI‑DSS).
Soft Skills	• Excellent troubleshooting and analytical abilities. • Strong communication skills for cross‑team collaboration and vendor management. • Ability to work independently and prioritize multiple tasks in a fast‑paced environment.

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Preferred Skills & Experience

• Automation/scripting (Python, PowerShell, Ansible).
• Experience with SD‑WAN solutions (Viptela, Cisco Meraki, VMware VeloCloud).
• Knowledge of cloud networking (AWS VPC, Azure VNets).
• Familiarity with ITIL/ITSM processes and ticketing tools (ServiceNow, JIRA).

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What We Offer

• Competitive salary + performance‑based bonuses.
• Comprehensive health, dental, and vision benefits.
• Retirement savings plan with company match.
• Generous paid time off and flexible work arrangements (remote/hybrid).
• Continuous learning budget – certifications, conferences, and training.
• Collaborative, inclusive culture focused on innovation and personal growth.

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How to Apply

1. Prepare your résumé highlighting relevant network projects, certifications, and measurable outcomes (e.g., “Reduced network latency by 30 % through WAN optimization”).
2. Submit your application through the NIIT Careers portal: [Insert Application Link].
3. Include a brief cover letter explaining why you’re excited about joining NIIT and how your expertise aligns with the role.

NIIT is an equal‑opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees.

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Ready to shape the future of global learning through world‑class network engineering? Apply today and become a key driver of NIIT’s technology excellence!