Network Firewall Administrator

General Dynamics - IT; Chantilly (VA); On-site; USD 92,112 - 126,655; Full time

Job summary

General Dynamics IT is seeking a Network Firewall Administrator to support the EMITS program in Wiesbaden, Germany. You will implement and maintain firewall configurations, monitor perimeter security, and coordinate changes with cross‑functional teams.

The role requires an active Secret clearance, DoD 8570 IAT II, CCNA Security, and hands-on experience with Cisco ASA/Firepower devices. You’ll contribute to RMF accreditation efforts and ensure secure, reliable network operations.

Qualifications

• Bachelor's degree with 5+ years of relevant experience.
• Active Secret Security Clearance with SSBI/T5.
• DoD 8570 IAT Level II certification on Day 1; ITIL Foundation within 90 days of hire.
• CCNA Security (required); CCNP Security (preferred).
• Experience supporting firewall/DMZ infrastructure and related network devices.

Responsibilities

• Implement and manage firewall configurations across coalition and mission partner networks.
• Monitor, troubleshoot and maintain firewall/IPS devices; resolve connectivity issues.
• Update RMF artifacts and architecture diagrams; draft outage notifications.
• Interface with end users, systems admins, and engineers for firewall changes.

Skills

Firewall configuration

Network troubleshooting

Security incident response

Education

BA/BS degree

DoD 8570 IAT Level II

ITIL Foundation

CCNA Security

CCNP Security

Tools

Cisco ASA 5500

Firepower 2100/4100

Cisco IOS/IOS-XE/CatOS

Cisco switches

Job description

GDIT is in need of a Network Firewall Administrator to support our Enterprise Mission Information Technology Services (EMITS) program in Wiesbaden, Germany.

MEANINGFUL WORK AND PERSONAL IMPACT

The Network Firewall Administrator is responsible for the implementation of network firewalls across coalition and mission partner networks. Configures and troubleshoots firewalls and resolves any connectivity issues. Monitors, manages, and troubleshoots perimeter security devices to include: firewalls, IDS/IPS, routers, and switches. Implements firewall change requests. Supports existing firewall devices, such as Cisco ASA 5500 and Firepower 2100/4100, as well as Cisco IOS/IOS-XE/CatOS based routers and switches. Uses network management tools and packet captures to resolve operational issues. Supports Security Computer Incident Response Teams by implementing IP Address denials as directed. Interfaces with end-users, systems administrators, and engineers for scheduling and implementing firewall modifications. Monitors security system logs and status. Performs daily tuning of firewall and IPS tools. Monitors, troubleshoots and performs health checks on multiple perimeter security devices. Performs recurring device maintenance activities such as applying system patches and device reboots. Routinely updates architecture diagrams using Visio. Drafts, coordinates and publishes Outage Notifications as required. Maintains standard operating procedures and guides. Creates and maintains system documentation and architecture diagrams to support the RMF accreditation process.

WHAT YOU WILL NEED TO SUCCEED:

• Security Clearance: Secret Level Security Clearance with an SSBI/T5 investigation
• Education: BA/BS, 5+ years experience.
• Certification: Must possess DoD 8570 IAT Level II certification on Day 1; Must obtain ITIL Foundation certification within 90 days of hire
• CCNA Security required; CCNP Security preferred.
• Skills & Experience: First‑hand experience with supporting the monitoring and configuration of Firewall/DMZ infrastructure including Network and Application Firewall Packet Filtering technologies.; Basic knowledge in configuring Cisco switches.
• Must be able to meet German TESA requirements.
• TESA requirements: A bachelors degree plus 3 years of recent specialized experience, OR; An associates degree plus 7 years of recent specialized experience, OR; A major certification plus 7 years of recent specialized experience, OR; 11 years of recent specialized experience.

GDIT IS YOUR PLACE

At GDIT, the mission is our purpose, and our people are at the center of everything we do.

Growth: AI-powered career tool that identifies career steps and learning opportunities.

Support: An internal mobility team focused on helping you achieve your career goals.

• Rewards: Comprehensive benefits and wellness packages, 401K with company match, and competitive pay and paid time off
• Community: Award-winning culture of innovation and a military-friendly workplace

OWN YOUR OPPORTUNITY

Explore an enterprise IT career at GDIT and you'll find endless opportunities to grow alongside colleagues who share your desire to drive operations forward.

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