Junior Network Security Engineer – Defend National Systems

General Dynamics Information Technology (GDIT); Ashburn (VA); On-site; USD 85,000 - 116,000; Full time

Benefits offered by this job

Medical plan options

401(k) plan with company match

Flexible work weeks

Paid time off

Job summary

General Dynamics Information Technology (GDIT) is seeking a Network Security Engineer Junior to support CBP’s security operations, deploying and maintaining security technologies across enterprise networks. You will influence threat detection, incident response, and policy development in a fast‑paced federal environment.

The role requires hands‑on experience with enterprise firewalls, IDS/IPS, VPNs, and NAC, plus a solid grasp of network protocols and security best practices.

Qualifications

• Minimum of three (3) years of hands-on network or security engineering experience.
• Experience with enterprise-grade firewalls, IDS/IPS, VPNs, and NAC tools.
• Strong understanding of network protocols, architecture, and security best practices.
• Experience monitoring and responding to security incidents.
• Familiarity with regulatory and compliance frameworks (e.g., NIST, ISO 27001, CIS).
• Preferred certifications: CompTIA Security+ CCNA or CCNA Security

Responsibilities

• Manage and maintain network security technologies including firewalls, IDS/IPS, VPN solutions, and NAC.
• Analyze existing network security architectures and develop solutions to mitigate threats, vulnerabilities, and emerging risks.
• Monitor network security events, investigate anomalies or incidents, and recommend corrective actions.
• Implement security enhancements to strengthen the organization’s overall defensive posture.
• Develop, document, and maintain network security policies, procedures, and standards.
• Ensure compliance with applicable security frameworks, regulatory requirements, and organizational policies.
• Collaborate with IT, security operations, and infrastructure teams to support secure network design and operations.

Skills

Network engineering

Firewall administration

IDS/IPS

VPNs

NAC tools

Security incident response

Regulatory compliance

Education

Bachelor’s degree preferred in cybersecurity, information technology, computer science, or related field

Job description

General Dynamics Information Technology (GDIT) is seeking a Network Security Engineer Junior to support CBP’s security operations, deploying and maintaining security technologies across enterprise networks. You will influence threat detection, incident response, and policy development in a fast‑paced federal environment.

The role requires hands‑on experience with enterprise firewalls, IDS/IPS, VPNs, and NAC, plus a solid grasp of network protocols and security best practices.