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Cyber Defense Infrastructure Support Engineer Security Clearance

Job in Suitland, Prince George's County, Maryland, 20746, USA
Listing for: CACI
Full Time position
Listed on 2026-02-13
Job specializations:
  • IT/Tech
    Cybersecurity, Systems Engineer, Network Security
Job Description & How to Apply Below
Position: Cyber Defense Infrastructure Support Engineer with Security Clearance
Job Title:

Cyber Defense Infrastructure Support Engineer Job Category:
Information Technology Time Type:
Full time Minimum Clearance Required to Start: TS/SCI Employee Type:
Regular Percentage of

Travel Required:

Up to 10% Type of Travel:
Local *
*
* The Opportunity:

CACI is seeking a skilled and experienced Cyber Defense Infrastructure Support Engineer (Level
3) to join our dynamic team to support a DoD client in Suitland, MD. The ideal candidate will have a robust background in cyber security, network technologies, and infrastructure support. This role requires a proactive problem solver with extensive experience in designing, implementing, and maintaining secure network environments. The candidate must possess TS/SCI clearance and meet the stringent requirements outlined by the DoD Cyber Security Workforce Improvement Program (DoD 8570.01-M).

Responsibilities:
Network Security:
Design, develop, integrate, implement, operate, and analyze cyber security technologies across LAN/WAN environments. CND Expertise:
Provide concentrated experience in Computer Network Defense (CND) including incident management, threat analysis, and remediation. Technology Implementation:
Install, network, configure, integrate, administer, maintain, and perform RMF functions on new cybersecurity technologies, including Zero Trust and Cloud resources (AWS, Azure). Intrusion Detection/Prevention:
Engineer, test, configure, tune, administer, and operate Network Intrusion Detection/Prevention Systems (NIDPS) and host-based intrusion detection/prevention solutions. Vulnerability Management:
Conduct vulnerability assessments and manage remediation using tools like Beyond Trust Retina and Tenable Nessus (ACAS). SIEM Systems:
Administer and operate Security Information and Event Management (SIEM) systems such as Splunk and Elastic. Forensics and Penetration Testing:
Perform forensic processes for data collection and analysis, and conduct penetration testing/Red Teaming activities. Documentation:
Write technical documents, "best practices," manuals, and standard operating procedures in accordance with Federal, DoD, IC, and industry standards. SDLC Process:
Participate in the System/Software Development Life Cycle (SDLC) Process. Emerging Technologies:
Identify and research emerging technologies, assessing their technical and performance characteristics. Stakeholder Communication:
Effectively communicate complex technical issues in business terms to all levels of management, mission stakeholders, and customers.

Qualifications:

Required:

* TS/SCI Security Clearance

* BA/BS in Computer Science, Information Technology, Information Assurance, or a related field desired;
Master's preferred.

* Without a degree, 15+ years of relevant professional experience is required.

* Experience:

* 10+ years of professional experience with LAN/WAN technologies, networking protocols, file systems, ports, services, and commands (Windows and Unix/Linux).

* 8+ years of concentrated experience in the CND discipline.

* 6+ years of experience in the design, development, integration, implementation, operation, and analysis of cyber security technologies.

* Skills:

* Effective interpersonal, organizational, time management, writing/documentation, and briefing skills with strong attention to detail.

* Strong analytical, conceptual, and problem-solving skills.

* Proven ability to communicate effectively with all levels of management, mission stakeholders, and customers.

* Proven ability to think outside the box by providing innovative, creative solutions to complex cyber security issues.

* Proven ability to prioritize, execute, and complete tasks with little to no direction in a high-pressure environment.

* Significant experience utilizing Federal, DoD, IC, and industry standards.

* Significant experience in the SDLC Process.

* Significant experience in identifying and conducting research in emerging technologies.

* Significant experience in writing technical documents addressing complex, sensitive issues.

* Significant experience in the development and implementation of CND tactics, techniques, and procedures (TTPs).

* Expert knowledge of policies and processes related to CND implementation, execution, and management.

* Expert knowledge of incident management
- _________________________________________________________________________ What You Can Expect: A culture of integrity. At CACI, we place character and innovation at the center of everything we do. As a valued team member, you'll be part of a high-performing group dedicated to our customer's missions and driven by a higher purpose - to ensure the safety of our nation. An environment of trust. CACI values the unique contributions that every employee brings to our company and our customers - every day.

You'll have the autonomy to take the time you need through a unique flexible time off benefit and have access to robust learning resources to make your ambitions a reality. A focus on continuous growth. Together, we will advance our nation's…
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