Lead Firewall Engineer

D2 Technical Services; Springfield (VA); On-site; USD 140,000 - 150,000; Full time

Job summary

D2 Technical Services is seeking a Lead Firewall Engineer to oversee the NSS Boundary Team and ensure QA standards and SLAs are met. This role reports to the Branch Chief of Cyber Technology Services.

Responsibilities include leading daily operations, designing security solutions with F5, Juniper SRX, and Palo Alto, and ensuring STIG/SRG baselines are enforced across systems and documentation. The position requires TS/SCI clearance and extensive domain experience.

Qualifications

• Active TS/SCI clearance and 8+ years in network security technologies.
• Experience in large-scale enterprise/global networks and DoD frameworks.
• Proven ability to manage a Firewall/Boundary Security Team.

Responsibilities

• Serve as focal point for firewall tasks, operations, and projects.
• Lead and manage daily operations, troubleshooting, and maintenance.
• Design and implement security solutions using F5, Palo Alto, Juniper SRX.
• Ensure devices meet STIG/SRG baselines and document configurations.
• Lead compliance evaluations and audits and oversee SOPs.
• Monitor performance, logs, versioning, and configuration drift.
• Maintain network diagrams, inventories, and licensing status.
• Provide reports and briefings to contract and government leadership.
• Coordinate issues with stakeholders to ensure task completion and satisfaction.
• Evaluate and recommend new technologies to enhance network capacity.

Skills

TS/SCI clearance

Firewall / boundary security

DoD architecture framework

F5 platforms

Palo Alto platforms

Juniper SRX platforms

OCSP revocation knowledge

Education

BS or MS in Computer Science / Cyber Security

Tools

F5

Palo Alto

Juniper SRX

LDAP / Kerberos / Active Directory

Job description

ACTIVE TS/SCI SECURITY CLEARANCE REQUIRED

D2 is looking for a Lead Firewall Engineer to oversee the NSS Boundary Team. This role will report directly to the Branch Chief of Cyber Technology Services. This position is responsible for maintaining compliance with quality assurance standards and ensuring service level agreements are met or exceeded within this service area.

Experience in reviewing, validating, and implementing requirements within enterprise Change Requests (CRQs) and determining impacts to network and cyber operations across the enterprise. This role is also responsible for providing technical oversight of troubleshooting efforts and solutions development executed by the subordinate team.

Responsibilities:

• Serve as the focal point for all firewall tasks, operations, and projects
• Lead, direct, and manage execution of all daily operations, troubleshooting, and maintenance activities of the NSS Boundary work center.
• Design, implement Manage security solutions using F5, Juniper SRX, and Palo Alto for project-based requirements.
• Ensure systems, devices, and application under your responsibility and span of control meet applicable STIG/SRG and organizational configuration baselines
• Lead regular compliance evaluations and audits
• Develop, oversee, maintain, and enforce configuration management processes, Standard Operational Procedures (SOPs), and other documentation as needed/required.
• Monitor platform performance, logs, software version(s), and configuration drift to identify and mitigate performance, compliance, and security issues.
• Develop and maintain network architecture diagrams, inventories, and licensing status for the various capabilities within the scope of the team.
• Provide written reports and oral briefings to contract and government leadership
• Coordinate issues with the appropriate stakeholders to ensure task completeness and overall customer satisfaction.
• Provide recommendations on newly submitted customer requests.
• Evaluate and report on new/emerging network/communication technologies to enhance capacity, performance and reliability of the network.
• Evaluate and recommend changes and/or technology upgrades to address performance, standardization and industry best practices.
• Conduct performance assessments, mentor, and coach personnel.

Qualifications:

Required:

• Security Clearance: Active TS/SCI
• 8+ years related technical experience network security technologies, tools, and techniques
• 5+ years' experience with large-scale enterprise/global networks in a high paced diverse environment
• Understanding and experience with the DoD Architecture Framework and other key DoD network architecture and strategic planning instructions
• Demonstrated knowledge in planning, directing, and managing a Firewall / Boundary Security Team in an organization similar in size
• Firewall experience within the DoW or IC
• Demonstrated knowledge of implementation of Perimeter and Internal Firewalls (both physical and virtual contexts)
• Demonstrated advanced experience in managing baseline configurations across numerous firewalls
• Demonstrated advanced experience in evaluating rules to ensure maximum security while minimizing redundancy and processing overhead
• Demonstrated experience with researching and fielding new and innovative firewall technology
• Experience with F5 platforms/technologies (APM, AFM, SSLO, etc.)
• Experience with Palo Alto platforms/technologies (Threat Prevention, Wildfire, URL Filtering, Global Protect)
• Experience with Juniper SRX platforms/technologies
• Experience with Online Certificate Status Protocol OCSP revocation
• Familiar with DoD PKI, Kerberos, LDAP, Active Directory, Authentication (SAML, OAuth)
• Ability to describe and troubleshoot TLS/SSL handshake/connection issues
• Network design, engineering, and implementation (Advanced Level)
• Creation of network related Rough Order Magnitude (ROM) equipment lists and costing, Level of Effort (LOE) estimation for labor
• Understanding of DoW, DISA, and IC standards and processes
• Ability to work weekends and evening hours as needed
• Ability to obtain and maintain a CI polygraph
• S6DoD 8140.01 and DoD 8570.01-M IAT Level II compliant certification (current). Must be able to successfully obtain/maintain CSSP Infrastructure Support certification within 120 days.

Desired:

• BS or MS degree in Computer Science, Cyber Security, Network Security or related field
• F5 Networks certifications
• Juniper JNCIS/JNCIP, Palo Alto PCNSE (or equivalent)

Additional Information

All your information will be kept confidential according to EEO guidelines.

Compensation is unique to each candidate and relative to the skills and experience they bring to the position. The salary range for this position is typically $140-$150k. This does not guarantee a specific salary as compensation is based upon multiple factors such as education, experience, certifications, and other requirements, and may fall outside of the above-stated range.