Senior Firewall Engineer with Security Clearance

PRISM
Quantico, Virginia 22134 United States  View Map
Posted: May 30, 2026
  • Full Time
  • Federal Government
  • Summary

    ABOUT PRISM PRISM is devoted to modernization and innovation within the world of technology, security, and IT enterprise solutions. We are recognized for meeting performance requirements and exceeding customer expectations since 1994. Our culture is founded on relationships, opportunity, and success. Offering comprehensive benefit plans including medical, dental, vision, and 401K along with our people - first approach sustains our reputation as a premier employer. PRISM Inc. seeking a Sr. Firewall Engineer to lead the design, implementation, and optimization of critical network security infrastructure. In this role, you will serve as the primary architect for enterprise-grade firewall systems, ensuring that large-scale networks are resilient against unauthorized access and evolving cyber threats. You will play a vital role in long-term IT modernization initiatives, engineering secure solutions across physical data centers, regional offices, and cloud environments. KEY RESPONSIBILITIES: Security Architecture: Design and deploy comprehensive network security solutions, including firewalls, VPNs, and advanced threat protection across physical and cloud-based infrastructures. Firewall Administration: Develop and enforce firewall rules and policies. Manage the full hardware/software lifecycle, including upgrades, patches, and configuration backups. Enterprise Modernization: Provide expert engineering to secure virtual and non-virtual systems within secure enclaves and AWS GovCloud environments. Incident Response: Monitor network traffic for vulnerabilities, respond to security alerts, and collaborate with security operations teams to improve the overall defensive posture. Capacity Planning: Conduct load balancing assessments and capacity planning to ensure efficient data flow and interoperability across the enterprise. Technical Integration: Direct the testing and integration of routers, switches, and gateway servers to ensure operability and security before deployment. Mentorship & Documentation: Maintain meticulous network records (topologies, ACLs, blueprints) and provide technical guidance and mentoring to junior engineering staff. REQUIRED QUALIFICATIONS: (SKILLS/EDUCATION): BA/BS in IT, Cybersecurity, Computer Science, or a related field: additional 4 years of relevant experience may be considered in lieu of a degree. 14+ years of relevant network security and engineering experience. Proficient in Cisco and Palo Alto firewall platforms. Proven experience with Cloud Security (specifically AWS GovCloud). Advanced knowledge of routing/switching, IP addressing, and Virtual Private Networks. Deep understanding of government security standards and industry best practices. Must hold at least one valid IAT Level II certification (e.g., Security+ CE, CCNA-Security, CySA+, GSEC, or SSCP). Must hold a professional-level certification, such as: CCNP (CCIE strongly preferred) OR Palo Alto Next-Generation Firewall Engineer (PCNSE) REQUIRED SECURITY CLEARANCE: Active DoD Top Secret clearance with SCI elgibility PRISM is an Equal Opportunity/Affirmative Action employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or veteran status, or any other protected class.
  • Job Description

    ABOUT PRISM PRISM is devoted to modernization and innovation within the world of technology, security, and IT enterprise solutions. We are recognized for meeting performance requirements and exceeding customer expectations since 1994. Our culture is founded on relationships, opportunity, and success. Offering comprehensive benefit plans including medical, dental, vision, and 401K along with our people - first approach sustains our reputation as a premier employer. PRISM Inc. seeking a Sr. Firewall Engineer to lead the design, implementation, and optimization of critical network security infrastructure. In this role, you will serve as the primary architect for enterprise-grade firewall systems, ensuring that large-scale networks are resilient against unauthorized access and evolving cyber threats. You will play a vital role in long-term IT modernization initiatives, engineering secure solutions across physical data centers, regional offices, and cloud environments. KEY RESPONSIBILITIES: Security Architecture: Design and deploy comprehensive network security solutions, including firewalls, VPNs, and advanced threat protection across physical and cloud-based infrastructures. Firewall Administration: Develop and enforce firewall rules and policies. Manage the full hardware/software lifecycle, including upgrades, patches, and configuration backups. Enterprise Modernization: Provide expert engineering to secure virtual and non-virtual systems within secure enclaves and AWS GovCloud environments. Incident Response: Monitor network traffic for vulnerabilities, respond to security alerts, and collaborate with security operations teams to improve the overall defensive posture. Capacity Planning: Conduct load balancing assessments and capacity planning to ensure efficient data flow and interoperability across the enterprise. Technical Integration: Direct the testing and integration of routers, switches, and gateway servers to ensure operability and security before deployment. Mentorship & Documentation: Maintain meticulous network records (topologies, ACLs, blueprints) and provide technical guidance and mentoring to junior engineering staff. REQUIRED QUALIFICATIONS: (SKILLS/EDUCATION): BA/BS in IT, Cybersecurity, Computer Science, or a related field: additional 4 years of relevant experience may be considered in lieu of a degree. 14+ years of relevant network security and engineering experience. Proficient in Cisco and Palo Alto firewall platforms. Proven experience with Cloud Security (specifically AWS GovCloud). Advanced knowledge of routing/switching, IP addressing, and Virtual Private Networks. Deep understanding of government security standards and industry best practices. Must hold at least one valid IAT Level II certification (e.g., Security+ CE, CCNA-Security, CySA+, GSEC, or SSCP). Must hold a professional-level certification, such as: CCNP (CCIE strongly preferred) OR Palo Alto Next-Generation Firewall Engineer (PCNSE) REQUIRED SECURITY CLEARANCE: Active DoD Top Secret clearance with SCI elgibility PRISM is an Equal Opportunity/Affirmative Action employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or veteran status, or any other protected class.
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