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Full time
Engineering

Lead Firewall Engineer

LeidosMount Vernon, VA🇺🇸United StatesPosted 28 Mar 2026

Why This Role Stands Out

Advance your career as a Lead Firewall Engineer at Leidos, a respected leader in digital modernization, where you'll design and manage critical network security solutions with significant impact. This on-site role offers a competitive salary range of $131,300 to $237,350 and is perfect for experienced engineers with expertise in Cisco, Juniper, and Palo Alto firewalls who are eager to lead and mentor a team. Apply now to contribute to vital national security initiatives and further develop your leadership and technical skills.

Quick Overview

Salary
$131.3k - $237.3k/yr
Work Type
On Site
Schedule
Full Time
Level
Mid Senior

Job Description

Lead Firewall Engineer | Mount Vernon, VA | On-site | $131,300.00 - $237,350.00 This employer is a globally recognised leader in digital modernization and technology solutions, known for their innovative approach and commitment to national security. They are seeking a highly skilled and experienced individual to join their dedicated cybersecurity team, focusing on protecting critical network infrastructure. The Role • Design, implement, and manage complex firewall solutions utilising Cisco ASA/Firepower, Juniper SRX, and Palo Alto technologies. • Monitor firewall performance and security logs, identifying and mitigating potential threats proactively. • Develop, enforce, and audit network security policies and procedures to ensure compliance. • Collaborate with cross-functional IT, Security, and Network teams to integrate firewall solutions seamlessly. • Troubleshoot and resolve network and firewall-related issues, maintaining detailed documentation. • Serve as a People Leader for the Firewall Task Area, overseeing operations, projects, and assessments. What You'll Need • Bachelor's degree with 12+ years of directly relevant experience, or equivalent experience in lieu of a degree. • Minimum of 3 years of firewall experience within a DoD environment. • Demonstrated advanced experience in managing baseline configurations and evaluating firewall rules for maximum security and efficiency. • Experience researching and implementing new firewall technologies. • Active DoD Top Secret security clearance with the ability to obtain TS/SCI. • DoD 8570 IAT II or higher certification and a relevant Juniper, Cisco, or Palo Alto certification prior to start. What's On Offer • Opportunity to work on critical national security initiatives within a highly respected organization. • Competitive salary range of $131,300.00 - $237,350.00. • Comprehensive benefits package including health, wellness, income protection, paid leave, and retirement programs. • Be a pivotal leader in a dynamic cybersecurity team focused on innovation and mission success. Apply via Haystack today!

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