Network Security Engineer Junior

Usa Va Ashburnentry

Network Security EngineerCybersecurity

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Quick Summary

Key Responsibilities

CompTIA Security+ CCNA or CCNA Security EDUCATION AND

Requirements Summary

Skills:Cybersecurity, IT Network Security, Network Security Technologies,

Technical Tools

Network Security EngineerCybersecurity

Regular

Clearance Level Must Currently Possess:

None

Clearance Level Must Be Able to Obtain:

None

BI Full 6C (T4)

Job Family:

Cyber and IT Risk Management

Requirements

~1 min read

Less than 10%

Cybersecurity, IT Network Security, Network Security Technologies, Security Operations

None

3 + years of related experience

Yes

Job Description:

The U.S. Customs and Border Protection (CBP) Cyber Security Directorate (CSD) is leading one of the most comprehensive, mission critical cybersecurity operations in the federal government, protecting the digital infrastructure that safeguards America’s borders. This multifaceted program spans 24/7/365 Security Operations Center (SOC) monitoring, advanced threat intelligence, forensics, incident response, cloud and network security engineering, zero trust modernization, vulnerability assessment, and enterprise-wide risk and compliance activities. The Network Security Engineer Junior will support teams at the forefront of national security, supporting sophisticated cyber operations that defend vital systems, enable secure mission execution, and counter rapidly evolving threats. You will find this work uniquely impactful, fast-paced, and deeply collaborative, offering the opportunity to lead high performing technical teams, shape CBP’s cybersecurity strategy, and contribute directly to the protection of the nation.

The Network Security Engineer Junior plays a critical role in supporting the implementation, monitoring, and maintenance of security technologies across enterprise networks. This role helps strengthen the organization’s cybersecurity posture by ensuring network devices, configurations, and traffic flows align with modern security standards and federal requirements. Working within a fast‑paced cybersecurity mission environment, the engineer contributes to safeguarding critical systems that underpin national‑level operations. The candidate will:

Manage and maintain network security technologies including firewalls, intrusion detection and prevention systems (IDS/IPS), VPN solutions, and network access control (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.

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

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

Minimum of three (3) years of hands-on network or security engineering experience.

Previous or Current CBP Background Investigation desired.

Onsite

Work Location:

USA VA Ashburn

Additional Work Locations:

Our benefits package for all US-based employees includes a variety of medical plan options, some with Health Savings Accounts, dental plan options, a vision plan, and a 401(k) plan offering the ability to contribute both pre and post-tax dollars up to the IRS annual limits and receive a company match. To encourage work/life balance, GDIT offers employees full flex work weeks where possible and a variety of paid time off plans, including vacation, sick and personal time, holidays, paid parental, military, bereavement and jury duty leave. To ensure our employees are able to protect their income, other offerings such as short and long-term disability benefits, life, accidental death and dismemberment, personal accident, critical illness and business travel and accident insurance are provided or available. We regularly review our Total Rewards package to ensure our offerings are competitive and reflect what our employees have told us they value most.

As part of the hiring process, we will ask you to complete an identity verification process that leverages advanced biometrics and artificial intelligence to ensure authenticity and protect against identity fraud. You are expected to be on camera during virtual interviews. We reserve the right to take your picture to verify your identity and prevent fraud. By proceeding, you authorize the collection, processing, and use of your biometric data for identity verification and security purposes.

We are GDIT. A global technology and professional services company that delivers technology solutions and mission services to every major agency across the U.S. government, defense and intelligence community. Our 26,000 experts extract the power of technology to create immediate value and deliver solutions at the edge of innovation. We operate across 50+ countries worldwide, offering leading mission-ready capabilities in AI, cloud, cyber and software development.

Join our Talent Community to stay up to date on our career opportunities and events at

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Equal Opportunity Employer / Individuals with Disabilities / Protected Veterans