Network Security Engineer (Splunk) - TS/SCI with Polygraph

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Job Title: Network Security Engineer (Splunk) - TS/SCI with Polygraph

Company Name:	General Dynamics IT
Location:	Herndon, VA
Position Type:	Full Time
Post Date:	12/17/2025
Expire Date:	03/18/2026
Job Categories:	Engineering, Information Technology

Job Description

Network Security Engineer (Splunk) - TS/SCI with Polygraph

Seize your opportunity to make a personal impact as a Network Security Engineer supporting customer activities. GDIT is your place to make meaningful contributions to challenging projects and grow a rewarding career.

At GDIT, people are our differentiators. As a Network Security Engineer, you will help ensure today is safe and tomorrow is smarter. Our work depends on a Network Engineer joining our highly skilled team to be a premier provider of cyber security services to the customer.

HOW A NETWORK SECURITY ENGINEER WILL MAKE AN IMPACT

Communicate with team leaders and senior leadership, assess changes, and rapidly change direction in support of new and/or changing program requirements.
Identify risks to the critical infrastructure of the customer to protect against cyber threats from foreign states, hackers, and internal sources.
Utilize operations technology knowledge to integrate cybersecurity tools to identify, detect, protect, respond, and recover from cybersecurity events.
Serve as a customer facing expert in intrusion detection and prevention systems, network detection and response, packet capture, and/or other tools, supporting them to achieve success with the technology for their overall cybersecurity efforts.
Collaborate with project teams on their network architecture, sensor placement, and planning activities for the deployment of new technology.
Analyze and help maintain a process to coordinate improvements to the cyber security of critical infrastructure in a collaborative process with critical infrastructure owners to determine if current cyber security requirements are sufficient given current and projected risks.

WHAT YOULL NEED TO SUCCEED:

Education: Bachelors (Computer Engineering, Computer Science, Electrical Engineering, Information systems, Information Technology, Cybersecurity, or closely related discipline)
Required Experience: 8+ yrs
Required Technical Skills:
Demonstrated experience working in Network Defense, Network Security Architecture, and Networking Technology (various devices and vendors)
Experience designing to a broad range of policy, standards and common risk management methodologies - for example, NIST, ISO 27001/27002, PCI/DSS, COBIT, ITIL, ISO 2000, etc.
Demonstrated experience with Splunk, SIEM, and network data analytics
Knowledge of IT and OT protocols, IP networks, OSI model, and other protocols utilized by the customer
Possess good troubleshooting and problem-solving skills, strong technical and analytical abilities, and strong oral and written communication skills.
Ability to identify new technologies, assess their technical and performance characteristics, as well as utilize proficiency in risk assessment methodologies
Ability to create complex system designs, resolve engineering problems, and propose preventive strategies.
Ability to write technical documents addressing complex, sensitive issues
Strong analytical and problem-solving skills
Demonstrated ability to analyze Information System (IS) test results and suggest compensating controls for meeting IS security requirements
Desired Qualifications:
Linux (command line) experience (minimum of intermediate skill/experience), CENTOS, scripting languages (python, shell, etc.)
On-premises and Cloud software solutions for enterprise
Security Clearance Level: TS/SCI with active polygraph
Desired Certifications:
Cyber security certification in one or more of the following: CISSP, CCNP, CCSP
Location: Herndon, VA - customer site

GDIT IS YOUR PLACE:

401K with company match
Comprehensive health and wellness packages
Internal mobility team dedicated to helping you own your career
Professional growth opportunities including paid education and certifications
Cutting-edge technology you can learn from
Rest and recharge with paid vacation and holidays

#WeAreGDIT
#JET
#GDITEnhanced2026

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Contact Information

Company Name:

General Dynamics IT

Website:

https://www.gdit.com/careers/job/75ad5c514/network-security-engineer-splunk-tssci-with-polygraph/?source=AutoAppend_HBCU

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