Network Security Engineer

Network Security Engineer

Overview
The Network Security Engineer plays a critical role in ensuring the stability,
performance, and security of the enterprise network. This position is
responsible for designing, implementing, and maintaining secure,
high-availability network infrastructure, while proactively identifying risks
and driving continuous improvement across network and security systems.

Essential Duties and Responsibilities

Administer, maintain, and support enterprise network infrastructure,
including firewalls, switches, routers, wireless access points, and related
networking equipment
Design, implement, and optimize network configurations to ensure high
availability, performance, and reliability
Provide advanced Layer 2 and Layer 3 troubleshooting and support, including
BGP and other dynamic routing technologies
Monitor network health and performance, proactively identifying and
resolving issues
Perform network upgrades, firmware updates, and hardware replacements as
needed
Maintain network documentation, diagrams, configurations, and standard
operating procedures.
Analyze vulnerability scan results and coordinate remediation efforts for
network devices and security appliances
Apply security patches, firmware updates, and configuration changes to
mitigate identified risks
Configure, manage, and maintain enterprise firewall platforms and security
policies
Implement and administer network security controls, including DNS filtering,
application control, web filtering, intrusion prevention, and related security
technologies
Ensure compliance with security standards, policies, and best practices
Create and maintain comprehensive documentation for all IT services and
related processes
Perform system administrator activities when needed

Job Requirements

Bachelor's Degree in computer science or related demonstrated experience
5+ years of experience managing enterprise network infrastructure
Strong knowledge of TCP/IP, VLANs, routing, switching, DNS, DHCP, VPNs, and
wireless networking
Experience managing enterprise firewall platforms and security policies
Knowledge of network security principles, segmentation, access control, and
threat mitigation.

Experience with DNS filtering, application control, and related security
technologies

Experience with vulnerability management and remediation processes
Industry certifications such as CCNA, CCNP, Fortinet NSE, Palo Alto
PCNSA/PCNSE, CISSP, Security+, or equivalent preferred

Experience with network monitoring and security monitoring tools preferred

Experience with BGP and dynamic routing protocols preferred