Cyber Security Engineer - III DoS CSS

OneZero Solutions

• $110K — $130K *
Information Technology
5 - 7 years of experience
Job Overview by Ladders

Qualifications

  • 7+ years in cybersecurity or systems engineering, including 4+ years with Tenable at scale.
  • Solid Linux and Windows administration skills with scripting abilities (Python, PowerShell, Bash).
  • Experience with STIG/SCAP compliance scanning and audit processes.
  • Active, final SECRET security clearance; must be a U.S. citizen.
  • DoD 8140/8570 IAT Level III certification or IAT Level II and willing to obtain Level III within 6 months.
  • Experience in a 24x7 on-call rotation for production security systems.

Responsibilities

  • Act as the primary Tenable subject matter expert and maintain platform availability around the clock.
  • Oversee the Tenable platform's administration from integrations to version upgrades and user access.
  • Design, manage, and schedule various scan templates to ensure comprehensive coverage based on requirements.
  • Conduct ad-hoc scans to validate security standards against server builds, applications, and appliances.
  • Manage asset onboarding and ensure accurate tagging within Tenable according to configuration standards.
  • Create dashboards and reports for compliance tracking and provide metrics to key stakeholders.
  • Lead integration efforts for Nessus Agent deployment and other data sharing initiatives.
  • Coordinate logistics for cyber testing and support build verifications.

Benefits

  • Comprehensive remote work policy with a focus on work-life balance.
  • Exposure to high-level government cybersecurity projects.
  • Opportunity for professional development and mentorship within the team.
  • Engagement in an environment that supports sensitive government operations.
  • Casework experience documented for compliance and best practices.
Full Job Description
Position Title: Cyber Security Engineer

Location: Remote; must reside within the National Capital Region (NCR).

Work Schedule: Full-time, 40 hours per week. Must be available during Department core hours of 9:00 a.m. - 3:00 p.m. ET, Monday - Friday, and flex working hours as needed to meet CST day-to-day and emergent requirements. No work is performed on Federal holidays or during Government closures. Participates in a rotating on-call schedule supporting 24x7x365 availability of the vulnerability and compliance scanning platforms.

Employment Type: Full-Time, Exempt (W-2), contingent upon Call Order award

Clearance: Secret

Position Summary

The Cyber Security Engineer III is the dedicated, full-time Tenable platform lead. The engineer owns engineering, operations, and maintenance of the CA Tenable vulnerability and compliance scanning platform used to assess on-premises consular systems (platform integrations, troubleshooting, backups, patching, user access, dashboard development, plugin updates, scan template design, and scan scheduling) and sustains 24x7x365 platform availability. The engineer also leads ad-hoc and BOD-driven scanning and agent deployment and integration efforts.

Key Responsibilities
  • Serve as the dedicated, full-time Tenable subject matter expert; maintain 24x7x365 platform availability and lead the on-call rotation.
  • Administer the Tenable platform end toend:integrations, troubleshooting, backups, patching and version upgrades, user access and role management, plugin and feed updates.
  • Design and maintain scan templates, policies, and schedules to ensure requiredcoverage: weeklyservers, monthly workstations, and any additional cadence required by Binding Operational Directives (RMF Step 6).
  • Perform ad-hoc and BOD-specific scans on request to confirm hardened server builds for developers, production applications, and appliances.
  • Ensure all in-scope assets are onboarded, grouped, and tagged in Tenable in accordance with CA configuration standards; support CA iPost application groupings and asset inventory accuracy.
  • Develop dashboards, reports, and metrics for the ISSM, AO, ISSOs, and other stakeholders, including KEV, CVE, and STIG compliance reporting.
  • Lead Nessus Agent deployment, data ingest and sharing, pipeline, and other integration efforts.
  • Deliver vulnerability and compliance scan results to ISSOs within timelines and to the assessment team during RMF Step 4.
  • Coordinate logistics for Red Cell penetration testing and Blue Team cyber hygiene scans; support hardened-build verification.
  • Document platform architecture, SOPs, and configuration baselines; provide Tenable evidence for the Evidence Index and SSPs.
  • Mentor the Cyber Security Engineer on platform operations and serve as escalation point for scanning issues.

Required Qualifications
  • Seven (7)+ years of cybersecurity or systems engineering experience, including four (4)+ years administering Tenable (Tenable Security Center / tenable.sc, Nessus, Nessus Agents, Tenable One / Vulnerability Management) at enterprise scale.
  • Strong Linux and Windows administration skills and scripting proficiency (Python, PowerShell, or Bash) including use of REST APIs for automation and reporting.
  • Experience with STIG/SCAP compliance scanning and audit files.
  • Active, final SECRET security clearance; U.S. citizenship.
  • DoD 8140/8570 IAT Level III baseline certification (e.g., CISSP, CASP+, GCIH, GCED) or IAT Level II with ability to obtain Level III within 6 months.
  • Experience supporting a 24x7 on-call rotation for a production security platform.

Preferred Qualifications
  • Tenable certifications (Tenable Security Center Specialist, Nessus Specialist, Tenable One).
  • Department of State experience, including iPost integration; DoD ACAS experience.
  • Experience with Wiz or another CNAPP for cloud scanning; SIEM (Splunk) integration.
  • Experience with CISA BOD 22-01 (KEV) and BOD 23-01 asset visibility reporting.

Technical Skills
  • Tenable Security Center / tenable.sc, Nessus Manager and Scanners, Nessus Agents, Tenable One; plugin/feed management; scan policy and credentialed-scan design.
  • SCAP/STIG benchmarks, DISA STIG Viewer, CIS benchmarks.
  • Linux (RHEL) and Windows Server administration; Python/PowerShell/Bash; Tenable REST API.
  • Dashboards and reporting; ticketing (ServiceNow or equivalent); SIEM integration.

Education

Bachelor's degree in Computer Science, Information Technology, Cybersecurity, or a related field, or an additional four (4) years of directly relevant experience in lieu of degree.

Remote/Hybrid/On-site and any other relevant work-environment requirement

Remote. Duties are performed remotely; the selected candidate must reside within the National Capital Region (NCR). The Government does not furnish equipment; OneZero provides the laptop and collaboration tools. Position requires an OpenNet account, DoS PIV badge, multifactor authentication, and adherence to DoS SBU/CUI handling requirements. Local travel within the National Capital Region; minimal other travel.

Position Status:

New Position, contingent upon Call Order award

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