Network Firewall Engineer Jobs (NOW HIRING)

Job ID: 2611838

Location: Quantico, VA, US

Date Posted: 2026-04-23

Category: Information Technology

Subcategory: Network Engineer

Schedule: Full-Time

Shift: Day Job

Travel: Yes - 10% of the time

Minimum Clearance Required: TS.SCI

Clearance Level Must Be Able to Obtain: None

Potential for Remote Work: ORA_ON_SITE

Description

SAIC is seeking a Senior Firewall Engineer to support DCSA for an ONSITE position out of Quantico, VA.  

(All qualified candidates must possess a TS/SCI and a Sec+)

Introduction

Make a difference for national security by joining a team of dedicated IT professionals who will sustain, modernize and transform the enterprise IT capabilities of the Defense Counterintelligence and Security Agency (DCSA). The Air Force and Combatant Commands Business Group of SAIC is seeking a Senior Firewall Engineer to support a transformational infrastructure program for DCSA.

SAIC is proud to be supporting DCSA in safeguarding our nation's information. DCSA is the designated oversight authority on the accreditation of classified facilities, information systems, and the insider threat program. This involves security oversight of more than 10,000 companies and approximately 13,000 facilities involved in classified work throughout the DoD and 31 Federal agencies.

Specifically, on the DCSA One IT program, SAIC will provide an enterprise IT solution that delivers highly secured and adaptable IT infrastructure, provides customer support, an cutting-edge technologies that support operations and advance the DCSA mission under a single IT environment (i.e., One IT).

Job Description

• Designs, implements, and maintains Cisco and Palo Alto firewall systems to secure networks and data, ensuring they are protected against unauthorized access and cyber threats.
• Develops and implements firewall rules and policies to protect network assets.
• Designs and implements network security solutions, including firewalls, VPNs, and other security technologies.
• Monitors and analyzes network traffic for security threats and vulnerabilities.
• Troubleshoot and resolve firewall-related issues and network connectivity problems.
• Maintains and updates firewall software and hardware.
• Responds to security incidents and alerts.
• Collaborates with security teams to improve security posture.
• Stays up-to-date with the latest security threats and vulnerabilities.
• Documents firewall configurations, procedures, and security policies.
• Communicates security issues and recommendations to stakeholders. 
• Provides mentoring and guidance to junior team members.
• Provides network solution engineering efforts to plan, design, configure, troubleshoot, implement, enhance, optimize and secure DCSA’s infrastructure of non-virtual and virtual systems in enclaves and data centers, regional field offices, field offices, and the Amazon Web Service (AWS) Govcloud environments, as part of the overall strategic objective of the DCSA IT modernization and One IT initiatives to provide a flexible enterprise IT environment to support the DCSA mission IAW with DCSA and DoD policies and procedures and commonly utilized industry best practices. 
• Supports translation of strategic goals, commitments, requirements, risks, and objectives into plans, tasks, and activities for solutions and alternatives, from a network perspective.
• Researches, maintains, and applies expertise in emerging technologies, and industry developments, trends, best practices, and principles of network engineering. 
• Develops and designs load balancing and engineering capability assessments. 
• Provides and implements capacity-planning solutions. 
• Directs or performs integration and testing of all items to ensure security and operability before deployment. Implements operational design standards and establishes appropriate interfaces that best fulfill interoperability and mission requirements, designing, recommending, and engineering configuration of all network and communication equipment, facilities, and services, specifically including router/switch configurations, Internet Protocol (IP) addresses, Regional Internet Access Points (RIAPs), Virtual Private Networks, gateway servers, and related services, in a manner to ensure most efficient flow of data and highest security, coordinating all solutions with Cyber Security Defense Operations. 
• Plans and oversees execution of network installations of system hardware and software upgrades. 
• Plans and executes backups and recovery operations. 
• Directs, executes, or supports compilation, implementation, maintenance and archiving of network records, documentation, and artifacts, such as specifications, topologies, diagrams, and policies; network blueprints and design documents; network data flow diagrams; Access Control Lists (ACLs); network management trend analysis reports; accreditations; network provisioned gear and change control documentation. 
• Provide inputs into the Activity Report.

Qualifications

Required Qualifications

It is required that the Senior Firewall Engineer have the following qualifications:

• BA/BS and fourteen (14) or relevant years of experience in lieu of degree.
• US Citizen and Active Top Secret clearance with SCI eligibility.
• IAT-II Certification in one of the following areas: CCNA-Security, CySA+, GICSP, GSEC, SSCP, CND and/or Security+CE.
• Applicable Network Environment (NE) Certification: CCNP (CCIE preferred) or Palo Alto Next Generation Firewall Engineer.
• Minimum 5 years managing enterprise level firewalls.
• Cisco ACS/Firepower administration.
• Palo Alto PAN-OS administration.

• Cisco Firepower Management Center (FMC) or Firepower Threat Detection (FTD) experience