Federal Cloud Information Systems Security Officer (ISSO) – Tenable / Air-Gapped Environment -- (Clearance Required, Secret) MD, OK, UT, PA, AL

Federal Cloud Information Systems Security Officer (ISSO) – Tenable / Air-Gapped Environment -- (Clearance Required, Secret) MD, OK, UT, PA, AL

  

This role has been designated as ‘Remote/Teleworker’, which means you will primarily work from home.

Job Description:

   

Job Description

Works with a cross-functional team to solve complex technical and cybersecurity challenges across a broad range of technologies (Servers, Storage, Network, and SAN) while delivering secure Cloud Services solutions to federal customers.

The Federal Cloud ISSO will serve as a key member of the SecOps Engineering function, responsible for ensuring the security, compliance, and operational effectiveness of classified cloud environments. This role has direct responsibility for Tenable (Tenable.sc / Nessus) vulnerability scanning operations within an air-gapped architecture, supporting ATO/RMF compliance, continuous monitoring, and audit readiness.

The ideal candidate brings a strong combination of ISSO oversight, hands-on vulnerability management, and secure cloud engineering experience, with the ability to operate in classified, disconnected environments where updates, scanning, and reporting processes must be managed manually and securely.

This role requires deep knowledge of federal security frameworks, a strong automation mindset, and the ability to operate in a fast-paced, mission-critical environment.

US Citizenship required

Clearance Required: Secret or Top Secret

Location: MD, OK, PA, UT, AL

This is a hybrid teleworker role. Employee will be required to travel to the customer site as needed, usually 2 or 3 times a week.

Schedule: M-F, 9am to 5pm. Candidate must be flexible to work evenings and weekends if required

Responsibilities include:

Security Operations & ISSO Functions

• Serve as primary ISSO supporting ATO, RMF, and continuous monitoring activities
• Develop and maintain ATO artifacts (SSP, POA&M, SAR, control narratives) aligned to NIST 800-53
• Ensure compliance with DISA STIGs and federal security standards
• Support audits and assessments, including evidence collection and vulnerability closure validation

Tenable / Vulnerability Management (Primary Focus)

• Own and operate Tenable platform and distributed Nessus scanners in an air-gapped environment
• Configure scan policies, audit files, credentials, repositories, and scan zones
• Execute and manage:
  • Credentialed vulnerability scans
  • STIG compliance scans
  • Port and discovery scans
• Manage offline plugin and audit content updates in accordance with air-gapped constraints
• Ensure full asset coverage, scan accuracy, and remediation tracking across all environments
• Generate and deliver vulnerability reports supporting ATO and DISA reporting requirements
• Analyze scan results to identify false positives, credential failures, and scan gaps
• Translate scan findings into POA&M entries and track remediation to closure

Air-Gapped Security Operations

• Maintain secure operations within a disconnected/isolated environment (no outbound connectivity)
• Manage manual update processes for plugins, definitions, and audit content
• Ensure proper segmentation, scanner placement, and network reachability for scan execution
• Support data export, sanitization, and reporting workflows for external consumption

Threat Detection & Incident Response

• Monitor logs, alerts, and scan outputs to detect security events
• Support incident response lifecycle: detection, containment, er