Charlotte, NC, USA ● Columbia, SC, USA ● Waynesboro, VA 22980, USA Req #1060
Friday, April 9, 2021

Segra is one of the larges independent fiber network companies in the Eastern US, Segra has a broad and dense service footprint across the Mid-Atlantic and Southeast.  We offer state-of-the-art voice and data technology solutions to businesses of all sizes and whole transport services to come of the world's largest carriers. 

This position can be located in Charlotte or within the Segra footprint. 

Job Summary

The primary responsibilities of the Network Security Engineer III  include providing Tier III support, standards development and maintenance, project support, and capacity planning and management of firewalls and other security technologies, products, and solutions supported by the Security Operations Center .  The successful candidate will be an integral member of the security operations team and will need to be fully cognizant of state-of-the-art network, firewall, and other security technologies, products and solutions, as well as industry best practice with regard to the design, implementation and deployment of firewall solutions. The successful candidate should also have deep hands-on experience with firewalls, networking, and security technologies. Candidate will also maintain Segra's  DDoS mitigation processes and procedures.

Duties & Responsibilities

  • Ensures that firewalls and other security technologies, products and solutions supported by the Security Operations Center are able to deliver the necessary capacity and performance targets, including storage, memory and throughput.
  • Receives and analyzes network alerts from various sources within the enterprise and determine possible causes of such alerts, and coordinates with the SOC to validate such alerts
  • Notifies designated managers and SOC team members of suspected cyber incidents and articulate the event's history, status and potential impact for further action
  • Provides timely detection, identification, and alerting of possible attacks/intrusions , anomalous activities , and misuse activities and distinguish these incidents and events from benign activities
  • Characterizes and analyzes network traffic to identify anomalous activity and potential threats to network resources
  • Analyzes identified malicious activity to determine weaknesses exploited, exploitation methods, effects on system and information
  • Validates intrusion detection system (IDS) alerts against network traffic using packet analysis tools
  • Identifies potential points of strength and vulnerability within a network  
  • Determines tactics, techniques, and procedures (TTPs) for intrusion sets
  • Examines network topologies to understand data flows through the network
  • Ensures that cybersecurity-enabled products or other compensating security control technologies reduce identified risk to an acceptable level
  • Reconstructs a malicious attack or activity based off network traffic
  • Monitors external data sources ( eg, cyber defense vendor sites, Computer Emergency Response Teams, Security Focus) to maintain currency of cyber defense threat condition and determine which security issues may have an impact on the enterprise
  •  Maintains knowledge of current security best practices and works with customers to implement those that will protect customer data and maintain customer IT environments
  • Performs analysis of network security needs and contributes to design, integration, and installation of hardware and software supported by the Security Operations Center
  • Performs implementation of new security infrastructure supported by the Security Operations Center, including refresh and migration activities
  • Supports off-hours maintenance activities for release management and changes associated with assigned projects and customer moves, adds, and changes
  • Maintains and administers perimeter security systems such as firewalls and intrusion detection systems
  • Serves as an escalation point for issues related to firewalls and other security technologies, products and solutions supported by the Security Operations Center


Education:  Bachelor's degree or equivalent combination of education and experience

Experience: 7+ years supporting configuration and testing Firewall, IDS, and IPS technologies; 7+ years of experience implementing/deploying Information Security Best Practices, Network Routing, Switching, and Security Design infrastructures; 7+ years of experience in Troubleshooting & Analysis tools

Key Competencies:
  • Evaluates and recommends solutions for highly complex security systems according to industry best practices to safeguard internal information systems and database
  • Ability to be available for on-call duties
  • Ability to interpret the information collected by network tools (eg; Nslookup, Ping, Traceroute)
  • Ability to identify/describe target vulnerability
  • Skill in detecting host and network-based intrusions via intrusion detection technologies (eg; Snort)
  • Ability to evaluate, analyze, and synthesize large quantities of data (which may be fragmented and contradictory) into high quality, fused targeting/intelligence targets  

Benefits include Medical/Dental/Vision insurance; 401(k), Tuition Reimbursement, GYM Reimbursement, Paid vacation/holiday leave and more...Please visit our company website at
We are proud to be an EEO/AA employer M/F/D/V. We maintain a drug-free workplace and perform pre-employment substance abuse testing.

Other details

  • Pay Type Salary
  • Charlotte, NC, USA
  • Columbia, SC, USA
  • Waynesboro, VA 22980, USA