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Role Overview

The Network Security Technical Lead will act as a senior Subject Matter Expert (SME) responsible for leading advanced network security operations, major incident escalations, architecture guidance, and secure change implementations across enterprise environments.

This role requires deep technical expertise in firewalls, routing & switching, VPN technologies, SD-WAN, data center networking, and security best practices. The candidate will mentor L2/L3 engineers, ensure governance and documentation standards, and drive operational excellence aligned with customer SLAs.

Key Responsibilities

🔹 Technical Leadership

• Provide L3/L4 escalation support for complex network and security incidents.

• Lead troubleshooting bridges during major incidents and ensure RCA documentation.

• Review and approve firewall, VPN, and network security configuration changes.

• Drive continuous improvement initiatives for network stability and security posture.

🔹 Network Security Operations

• Manage and support enterprise firewall environments (Cisco ASA, Palo Alto, Fortinet).

• Configure and troubleshoot IPSec/SSL VPNs, site-to-site tunnels, and remote access.

• Support routing & switching (BGP, OSPF, EIGRP, VLANs, STP, HSRP).

• Handle NAT policies, access control policies, URL filtering, IDS/IPS.

• Support SD-WAN environments and edge security solutions.

🔹 Architecture & Design

• Provide design validation and implementation support for new network security deployments.

• Perform risk assessments and recommend security hardening strategies.

• Participate in security audits and compliance reviews.

🔹 Governance & Documentation

• Maintain accurate documentation (HLD, LLD, SOPs, KB Articles).

• Ensure all changes are implemented via ITIL-based change management processes.

• Support audit and compliance requirements.

🔹 Team Mentoring & Stakeholder Management

• Mentor L2/L3 engineers and conduct technical knowledge-sharing sessions.

• Coordinate with global teams, vendors, and customers.

• Provide technical reports and service improvement recommendations.

Required Technical Skills

• Firewalls: Cisco ASA, Palo Alto, Fortinet

• Routing & Switching (Enterprise & Data Center)

• VPN Technologies (IPSec, SSL VPN, AnyConnect)

• Network Protocols: BGP, OSPF, EIGRP

• NAT, ACL, IDS/IPS, URL Filtering

• SD-WAN Technologies

• Data Center Networking (Nexus preferred)

• Basic Cloud Networking knowledge (Azure/AWS preferred)

• ITIL Process knowledge

Preferred Certifications

• CCNP Security / CCNP Enterprise

• PCNSE (Palo Alto)

• Fortinet NSE

• ITIL Foundation

We make technology work so people can do great things.     

CDW is a leading multi-brand provider of information technology solutions to business, government, education and healthcare customers in the United States, the United Kingdom and Canada. A Fortune 500 company and member of the S&P 500 Index, CDW helps its customers to navigate an increasingly complex IT market and maximize return on their technology investments. Together, we unite. Together, we win. Together, we thrive.

CDW is an equal opportunity employer. All qualified applicants will receive consideration for employment without regards to race, color, religion, sex, sexual orientation, gender identity, national origin, disability status, protected veteran status or any other basis prohibited by state and local law.      

CDW is committed to fostering an equitable, transparent, and respectful hiring process for all applicants. During our application process, CDW’s goal is to get to know you as an applicant and understand your experience, strengths, skills, and qualifications. While AI can help you present yourself more clearly and effectively, the essence of your application should be authentically yours. To learn more, please review CDW's AI Applicant Notice.