Network Cloud Security Engineer - TS/SCI with Polygraph

Company: GD Information Technology
Location: Herndon
Posted on: April 2, 2026

Job Description:

Type of Requisition: Regular Clearance Level Must Currently Possess: Top Secret SCI Polygraph Clearance Level Must Be Able to Obtain: Top Secret SCI Polygraph Public Trust/Other Required: None Job Family: Cyber and IT Risk Management Job Qualifications: Skills: Cyber Defense, Cybersecurity, Information Technology (IT), Network Security Certifications: Certified Cloud Security Professional (CCSP) | International Information System Security Certification Consortium (ISC2) - International Information System Security Certification Consortium (ISC2), Certified Information Systems Security Professional (CISSP) | International Information System Security Certification Consortium (ISC2) - International Information System Security Certification Consortium (ISC2), Certified Network Professional Enterprise (CCNP) | Cisco - Cisco Experience: 8 years of related experience US Citizenship Required: Yes Job Description: Seize your opportunity to make a personal impact as a Network Cloud 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 and as a Network Cloud Security Engineer, you will help ensure today is safe and tomorrow is smarter. Our work depends on a Network Cloud Security Engineer joining our highly skilled team to be a premier provider of cyber security services to the customer. Our customer has a requirement for a Network Cloud Security Engineer with a background in Network Defense and Cloud Security in the areas below: Intrusion Detection/Intrusion Prevention Systems (IDS/IPS) - Trellix / FireEye Network Detection and Response (NDR) Experience with Vectra or similar (Vectra integration with Active Directory a plus); Packet brokers and optical taps Firewall experience (configuring Palo Alto NEXTGEN and/or Cisco FirePower) Creating and/or modifying Splunk dashboards Programming language experience, Python and PowerShell Experience working on/within the customer's enterprise network HOW A NETWORK SECURITY ENGINEER WILL MAKE AN IMPACT Communicate with team leaders and 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 YOU’LL 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 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 VA_2026Alumni The likely salary range for this position is $161,500 - $218,500. This is not, however, a guarantee of compensation or salary. Rather, salary will be set based on experience, geographic location and possibly contractual requirements and could fall outside of this range. Scheduled Weekly Hours: 40 Travel Required: None T elecommuting Options: Onsite Work Location: USA VA Herndon Additional Work Locations: Total Rewards at GDIT: 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. We are GDIT. A global technology and professional services company that delivers consulting, technology and mission services to every major agency across the U.S. government, defense and intelligence community. Our 30,000 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 capabilities in digital modernization, AI/ML, Cloud, Cyber and application development. Together with our clients, we strive to create a safer, smarter world by harnessing the power of deep expertise and advanced technology. Join our Talent Community to stay up to date on our career opportunities and events at gdit.com/tc . Equal Opportunity Employer / Individuals with Disabilities / Protected Veterans

Keywords: GD Information Technology, Harrisonburg , Network Cloud Security Engineer - TS/SCI with Polygraph, IT / Software / Systems , Herndon, Virginia