Cybersecurity Support Specialist

nooks; Arlington (VA); On-site; USD 90,000 - 115,000; Full time

Job summary

Nooks is seeking a Cybersecurity Support Specialist to help maintain the security and compliance of classified and unclassified systems at a single site. You will report to the Site IT/Cyber Manager as an individual contributor with 2–5 years of hands-on practice in cybersecurity or system administration.

Responsibilities include vulnerability management, documentation upkeep (SSPs/POA&Ms/audit logs), and coordinating with IT Support for access control.

Qualifications

• 2–5 years of experience in cybersecurity or system administration.
• DoD 8140.03/8570.01 IAT II certification (or the ability to obtain within 6 months).
• Hands-on experience with DISA STIGs and tools such as SCAP Compliance Checker and STIG Viewer.
• Familiarity with access control, vulnerability management, system hardening, and Active Directory including GPO/OU structures.
• Foundational knowledge of Windows and Linux, networking, and IT troubleshooting.
• Associate's or Bachelor's in Cybersecurity/IT or equivalent experience.
• Strong documentation habits and clear cross-functional communication.

Responsibilities

• Security Monitoring & Vulnerability Management: perform scans, patch verification, and config checks.
• Monitor security posture of classified/unclassified systems and apply DISA STIGs.
• Track findings and remediation to closure per DoD standards.
• Compliance Documentation & Support: maintain SSPs, POA&Ms, audit logs, and SOPs.
• Record evidence for audits and self-inspections; keep artifacts organized for assessors.
• User Support & Access Control: provide Tier 1 support; manage accounts and permissions with IT Support Specialist.
• Incident Response & Security Awareness: participate in IR and daily security awareness activities.
• Cross-Functional Collaboration: work with IT, security, and operations to stay compliant with DoD requirements.

Skills

Cybersecurity

System administration

IAT II cert

DISA STIGs

Active Directory

Windows

Linux

Documentation

Education

Associate's or Bachelor's degree in Cybersecurity/IT

Tools

Tenable Nessus

ManageEngine

Splunk

ESET/Trellix

Job description

Nooks is pioneering Classified-Infrastructure-as-a-Service (CIaaS) — designing, building, and operating Sensitive Compartmented Information Facilities (SCIFs) and other secured, classified environments for the defense and national security community. We work with the agencies, contractors, and mission-driven organizations that keep the nation safe, delivering the physical infrastructure that makes classified work possible. We’re growing fast, operating across multiple markets, and building a company that takes both the mission and the business seriously.

About the Role

Accredited systems generate a constant stream of security work — scans to run, findings to track, documentation to keep current, users to support. As Cybersecurity Support Specialist, you will keep that work moving at a single Nooks site, supporting the security and compliance of classified and unclassified systems alongside the site's Cybersecurity Lead. You will bring two to five years of hands‑on practice to a specialist seat, reporting to the Site IT/Cyber Manager as an individual contributor.

Our procedures are real but still maturing — audits, incidents, and new system standups will reshuffle your week, and you will step in wherever the site's security posture needs attention without waiting to be asked.

Key Responsibilities

Security Monitoring & Vulnerability Management

• Conduct vulnerability scanning, patch verification, and security configuration checks under the direction of the site Cybersecurity Lead.
• Monitor and audit the security posture of classified and unclassified systems, applying Defense Information Systems Agency (DISA) Security Technical Implementation Guides (STIGs).
• Track findings and remediation actions to closure, documented to organizational and Department of Defense (DoD) standards.

Compliance Documentation & Support

• Maintain cybersecurity documentation — System Security Plans (SSPs), Plans of Action and Milestones (POA&Ms), audit logs, and standard operating procedures.
• Record compliance actions and evidence so the site is ready for audits and self-inspections at any time.
• Keep artifacts organized so the Cybersecurity Lead can hand assessors current documentation on demand.

User Support & Access Control

• Provide Tier 1 support for cybersecurity-related user requests, escalating issues that need deeper analysis.
• Manage user accounts, security groups, and permissions in partnership with the site's IT Support Specialist — you both work in this space, so clean records and communication matter.
• Support permissions reviews and the implementation of access control policies, including role-based access control.

Incident Response & Security Awareness

• Participate in incident response and continuous monitoring — log collection, basic analysis, and security control status reporting.
• Reinforce cybersecurity best practices with end users through daily interactions.
• Collaborate with IT, personnel security, and physical security teams to keep site operations compliant with DoW requirements.

What Success Looks Like in This Role

Twelve months in, the site's routine security workload — scans, checks, and documentation upkeep — runs on schedule with little prompting. The SSPs, POA&Ms, and audit artifacts you maintain are current enough to hand straight to an assessor. Tier 1 cybersecurity requests get resolved or escalated cleanly, and account and permissions records stay accurate through every review. Handoffs with the IT Support Specialist are smooth because the shared account work is documented and coordinated. The Cybersecurity Lead trusts your work enough to build audit responses on top of it.

Cross-Functional Expectations

Inside IT/Cyber, you will work most closely with your site's Cybersecurity Lead and IT Support Specialist, coordinating daily on shared account and access work. You will partner with Security on personnel and physical security touchpoints, and support Operations, specifically the Site Lead, for site activities.

The Skillset

• 2–5 years of experience in cybersecurity or system administration.
• DoD 8140.03/8570.01 Information Assurance Technical (IAT) Level II certification (e.g., CompTIA Security+), or the ability to obtain one within six months of hire.
• Hands-on experience with DISA STIGs and tools such as the Security Content Automation Protocol (SCAP) Compliance Checker and STIG Viewer.
• Familiarity with access control, vulnerability management, and system hardening, plus Active Directory — including Group Policy Object (GPO) and Organizational Unit (OU) structure.
• Foundational knowledge of Windows and Linux operating systems, networking, and common IT troubleshooting practices.
• Associate's or Bachelor's degree in Cybersecurity, Information Technology, or a related field — or equivalent practical experience.
• Strong documentation habits, attention to detail, and clear communication across IT and security functions.

Preferred:

• Familiarity with monitoring and scanning tools such as Tenable Nessus, ManageEngine, Splunk, antivirus platforms (e.g., ESET, Trellix), and other vulnerability and security information and event management (SIEM) tools.
• Prior DoW or cleared-environment exposure.

Eligibility & Clearance

Candidates must be eligible to work in the United States and capable of maintaining eligibility up to the Top Secret/Sensitive Compartmented Information (TS/SCI) level within 45 days of hire.

Salary Range for all departments

Salary Range

$90,000 - $115,000 USD

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