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Senior Computer Network Defense (CND) Engineer - Active TS/SCI

MKS2 Technologies
Springfield, VA Full Time
POSTED ON 12/11/2025 CLOSED ON 1/7/2026

What are the responsibilities and job description for the Senior Computer Network Defense (CND) Engineer - Active TS/SCI position at MKS2 Technologies?

Senior Computer Network Defense (CND) Engineer - Active TS/SCI Clearance


Location: Springfield, VA

Pay Rate: Negotiable based on market rate/experience - full benefits included

Summary:


We are hiring for a Senior Computer Network Defense (CND) Engineer with an active TS/SCI clearance - with the ability to obtain and maintain a Counterintelligence (CI) Polygraph in our Springfield, VA location. Our positions are required to be onsite. The Senior Computer Network Defense (CND) Engineer tests, implements, deploys, maintains, review, and administers the hardware, software, and documentation required to support the CND capabilities. This may include, but is not limited to, Splunk, Security Information and Event Management (SIEM) products, vulnerability scanning tools as deployed within hosted Information Systems.


Responsibilities

  • The Senior CND Engineer develops and manages the tools, tactics, and techniques that will be used to monitor the network to actively remediate unauthorized activities (dashboards, queries, scan policies, etc.).
  • The Senior CND Engineer develops and maintains system documentation as it pertains to CND capabilities and their implementation (CONOPs, SOPs, etc.).
  • The position provides reports as needed for the health, wellness, and availability of CND tools within hosted information systems and addresses any issues in a timely manner.


Qualifications

  • 7 or more years experience implementing and maintaining Cyber Security technologies on a multi-platform (Windows, Red Hat, etc.) enterprise-grade WAN.
  • 4 or more years of experience implementing, maintaining, and operating a SIEM and/or vulnerability scanner product.
  • 4 or more years experience in maintaining and operating Red Hat Enterprise Linux (RHEL) servers.
  • Shall meet the Cyber IT/Cybersecurity Workforce (CSWF Cyber Defense Infrastructure Support Specialist (521); Intermediate Level for SECNAV M-5239.2 compliance. (See Navy Cool WebSite).


Education:

  • BS degree in Information Technology, Cybersecurity, Computer Science, Information Systems, Data Science, or Software Engineering from an ABET accredited or NCAE designated institution; or one of the following, qualifying certifications:


  • Certified Ethical Hacker (CEH); or
  • CompTIA Cloud ; or
  • CompTIA Cybersecurity Analyst (CySA ); or
  • CompTIA PenTest ; or
  • CompTIA Security ; or
  • GIAC Foundational Cybersecurity Technologies (GFACT); or
  • Systems Security Certified Practioner (SSCP)


Desired Qualifications:

  • 7 or more years of experience developing, maintaining, and operating Splunk or other equivalent SIEM product.
  • 7 or more years of experience in developing, maintaining, and operating Tenable/ACAS or other equivalent vulnerability scanner product.
  • 7 or more years of experience with Red Hat Enterprise Linux or other equivalent Linux product.
  • 4 or more years of experience with evaluating technologies in accordance with DISA STIGs (Windows, Red Hat, Cisco, etc.) and providing applicable remediation guidance.
  • Security Clearance Requirements:
  • The position requires an active Top Secret/SCI clearance with the ability to obtain and maintain a Counterintelligence (CI) Polygraph.
  • Skills & Technology Used:
  • Implementation & Maintenance and maintaining of Cyber Security technologies on a multi-platform (Windows, Red Hat, etc.) enterprise-grade WAN.
  • Implementation & Operations for a SIEM and/or vulnerability scanner product.
  • Maintenance & Operations on Red Hat Enterprise Linux (RHEL) servers.
  • Strong communication, presentation, written, reporting, and interpersonal skills.

Salary : $150,000 - $180,000

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