Network Security Engineer

This role ensures the integrity, stability, and protection of network systems by combining deep networking knowledge with security best practices. The Network Security Engineer will work closely with infrastructure, cloud, and cybersecurity teams to deliver robust, scalable network solutions that meet business and compliance requirements.

Key Responsibilities

• Design, configure, and manage enterprise LAN, WAN, MAN, and wireless networks with a focus onsecurity, performance, and availability

• Implement, maintain, and troubleshootfirewalls, VPNs, load balancers, and intrusion prevention systems (IPS)

• Manage and optimizenetwork access controls, routing protocols, and traffic management policies

• Collaborate with cybersecurity teams to develop and enforce network security standards, segmentation, and compliance controls

• Support and manage network connectivity for hybrid and multi-cloud environments (AWS, Azure, GCP)

• Performcapacity planning, performance analysis, and root-cause troubleshooting for network incidents

• Develop and maintain network documentation, including topology diagrams, configuration standards, and technical procedures

• Evaluate emerging network technologies and recommend enhancements to improve performance and security posture

• Participate in on-call rotation and provide off-hours support as needed

• Work cross-functionally with project managers and technical teams to deliver network infrastructure projects on time and within scope

Required Qualifications

• Bachelor's degree in Electrical Engineering, Computer Science, or related field — or equivalent experience

• 5+ years of experience innetwork engineering and network security within enterprise environments

• Expertise inCisco technologies includingNexus, Catalyst, ISR, and ASR platforms

• Strong understanding ofrouting protocols (EIGRP, BGP, OSPF, HSRP, VRRP, GLBP) and Layer 2/3 networking principles

• Hands-on experience withfirewalls (Cisco ASA/NGFW, Palo Alto, or Fortinet),VPN (IPSec/SSL), andF5 Load Balancing (LTM/ASM)

• Proficiency inwireless technologies,DNS/DHCP/IPAM, and network monitoring tools

• Strong knowledge ofQoS, packet capture, and network performance analysis

• Excellent troubleshooting, analytical, and documentation skills

• Ability to work independently, manage multiple priorities, and communicate effectively with technical and business teams

Preferred Qualifications

• Professional certifications such asCCNP, CCNA Security, F5-CTS, or equivalent

• Experience withcloud networking (AWS, Azure, or GCP) and hybrid network architectures

• Knowledge ofVoIP,multicasting, andoptical networking

• Familiarity withGigamon,Radius/TACACS, and advanced network monitoring platforms

Compensation
Competitive compensation and comprehensive benefits

Location
Philadelphia, PA