Demo

Sr. Firewall Engineer

Northern Technologies Group, Inc.
Arlington, VA Full Time
POSTED ON 1/4/2026
AVAILABLE BEFORE 3/4/2026

Position Summary


The Sr. Firewall Engineer will design, manage and troubleshoot the multi-tier firewall security infrastructure systems. Despite the strong technical focus of the job, firewall engineers also engage with customers and government leadership, relaying information about projects and troubleshooting all issues discovered. They are proficient in change management and disaster response, and they actively apply policies and standards to all projects. While they spend most of their time in front of a computer, they often function within a team of other engineers, and they may work shifts at irregular hours to perform maintenance at unobtrusive times or resolve critical issues.

Essential Duties and Responsibilities


The essential functions include, but are not limited to the following:

  • Configure, manage and troubleshoot firewall and security platforms (Cisco ASA, Juniper SRX, Palo Alto, F5 and Sidewinder)
  • Analyze firewall change requests and integrate changes into existing firewall policies, while maintaining security standards.
  • Develop and maintain security documentation and standards documents, as required.
  • Provide higher tier technical support to the operation teams on all security related networking issues
  • Participate in design discussions with planning and design teams of different engineer groups to design new secured network segments and security policies.
  • Work closely with various project managers in defining, tracking and reporting tasks and milestones
  • Design Security Systems: Firewall engineers review customer requirements for security systems and collaborate with other engineers and developers to decide on an overall technical approach. Once they reach agreement with the customer, they proceed with creating specific designs.
  • Troubleshoot Issues: Firewall engineers constantly monitor security devices and applications for performance problems, as well address tickets in queue, and provide troubleshooting support for customers. When issues arise, they must analyze the root cause and resolve them promptly or else escalate them to another department while updating customers all throughout.
  • Write Documentation: Aside from preparing status reports for customers, firewall engineers write extensive documentation on procedures, device statuses, firewall block lists, and other important technical areas. They also create diagrams of network topologies and record details of troubleshooting processes.
  • Ensure Compliance: Standards and policies are extremely important when it comes to network security, and firewall engineers should be aware of these, keeping abreast of changes and defining processes for compliance. In addition, they enforce quality control and ensure that all output meets project requirements.

Minimum Qualifications (Knowledge, Skills, and Abilities)

  • BS degree; additional years of experience may be considered in lieu of degree
  • 5 years of experience with Network protection techniques and technologies
  • Experience with Firewalls, Routers, Linux, VPN, F5 and IDS/IPS
  • CompTIA Security
  • Juniper/Cisco/Palo Alto experience
  • Top Secret/SCI clearance
  • Experience in Network security hardware (Cisco ASA (Firepower), CSM, Prime, Juniper SRX, JunoSpace, Palo Alto, Panorama, F5, Firemon, NetScreen), Network analysis software (Linux, TCPDUMP, PCAP), Diagram software (Visio, PDF, CAD), Customer service software (Remedy)
  • Problem-solving skills
  • Customer service
  • Attention to detail
  • Time management

Physical Demands and Work Environment


The physical demands described here are representative of those that must be met by an employee to successfully perform the essential functions of this position. Reasonable accommodations may be made to enable individuals with disabilities to perform these functions.

While performing the duties of this position, the employee is regularly required to talk or hear. The employee frequently is required to use hands or fingers, handle or feel objects, tools, or controls. The employee is occasionally required to stand; walk; sit; and reach with hands and arms. The employee must occasionally lift and/or move up to 25 pounds. Specific vision abilities required by this position include close vision, distance vision, and the ability to adjust focus. The noise level in the work environment is usually low to moderate.

Travel

Up to 10%

Shift

Hours and shift determined by location.

Note


This job description is not designed to cover or contain a comprehensive listing of activities, duties or responsibilities that are required of the employee for this job. Duties, responsibilities and activities may change at any time with or without notice. Employees will be required to follow any other job-related instructions and to perform any other job-related duties requested by any person authorized to give instructions or assignments. This document does not create an employment contract, implied or otherwise, other than an "at will" relationship.

The company is an Equal Opportunity Employer, drug free workplace, and complies with ADA regulations as applicable.

Salary.com Estimation for Sr. Firewall Engineer in Arlington, VA
$120,552 to $149,316
If your compensation planning software is too rigid to deploy winning incentive strategies, it’s time to find an adaptable solution. Compensation Planning
Enhance your organization's compensation strategy with salary data sets that HR and team managers can use to pay your staff right. Surveys & Data Sets

What is the career path for a Sr. Firewall Engineer?

Sign up to receive alerts about other jobs on the Sr. Firewall Engineer career path by checking the boxes next to the positions that interest you.
Income Estimation: 
$123,167 - $152,295
Income Estimation: 
$146,673 - $180,130
Income Estimation: 
$111,725 - $147,313
Income Estimation: 
$139,945 - $168,577
Income Estimation: 
$140,233 - $181,029
Income Estimation: 
$161,209 - $233,553
View Core, Job Family, and Industry Job Skills and Competency Data for more than 15,000 Job Titles Skills Library

Job openings at Northern Technologies Group, Inc.

  • Northern Technologies Group, Inc. Tampa, FL
  • Position Summary Northern Technologies Group (NTG) is seeking a highly skilled Systems Architect to support United States Special Operations Command (USSOC... more
  • 12 Days Ago


Not the job you're looking for? Here are some other Sr. Firewall Engineer jobs in the Arlington, VA area that may be a better fit.

  • NTG Arlington, VA
  • Description Position Summary The Sr. Firewall Engineer will design, manage and troubleshoot the multi-tier firewall security infrastructure systems. Despit... more
  • 11 Days Ago

  • SAIC Springfield, VA
  • Job ID 2511401 Location SPRINGFIELD, VA, US Date Posted 2025-11-10 Category Cyber Subcategory Cyber Engineer Schedule Full-time Shift Day Job Travel No Min... more
  • 19 Days Ago

AI Assistant is available now!

Feel free to start your new journey!