Senior Cybersecurity Engineer; Linux

Req : RQ214844

Type of Requisition: Regular

Clearance Level Must Be Able to Obtain: Top Secret/SCI

Public Trust/Other

Required:

None

Job Family: Cyber and IT Risk Management

Skills:

Cybersecurity,Endpoint Security,Linux,Splunk Enterprise Security

Certifications:

CompTIA Security+ CE | CompTIA - CompTIA

Experience:

8 + years of related experience

US Citizenship

Required:

Yes

We are seeking a highly skilled and multi-faceted Cyber Engineer for a critical contract role supporting Google's SIPRNet enclave. The ideal candidate is a proactive and seasoned professional with extensive, hands‑on experience navigating Red Hat Linux, the NIST 800‑53 Risk Management Framework (RMF) control requirements, and Security Operations for a classified network in a unique commercial cloud setting. This role requires a blend of technical engineering prowess to provide Security Operations support as well as a deep understanding of continuous monitoring control requirements to prepare for security assessments and auditing.

You will be a key contributor to our SIPR Enclave team, supporting the SIPR Enclave Lead in RMF activities and the Senior Cyber Engineer in security operations support.

From a RMF perspective, as directed by the SIPR Enclave Lead –

• Supports maintaining the Continuous Monitoring program, specifically around vulnerability management, endpoint security, auditing, and security alert triage/monitoring.
• Supports control implementation statement updates, documentation development for plans or procedures, artifact identification for assessments, and body of evidence generation.
• Supports POAM mitigation and/or remediation activities.

From a Security Tools administrative perspective, as directed by the Senior Cyber Engineer, the Engineer –

• Ability to update and maintain security tool versions (Splunk, Trelix, etc)
• Configure, patch, and update the Linux operating systems
• Monitors the following security applications:
  Splunk, Trelix, Tenable
• Scanning implementation (Tenable.sc, SCC Tool)
• SIEM implementation (Splunk)
• Endpoint security implementation (Trellix)
• Works with the vendors of the security applications as applicable to maintain security updates, licenses, resolve support issues (e.g., for Tenable plugins), etc.

For the SIEM:

• Ensure security systems are up to date and implemented.
• Validate the telemetry from the hosts and security applications are forwarded to the SIEM.
• Configures alerts for privileged activity that would be conducted in the enclave as well as alerts from security advisories.
• Triages all alerts from the SIEM to ensure activity in the environment is authorized.
• Investigates, resolves, and reports security incidents in alignment with the Incident Response Plan.

For scanning/STIGs:

• Ensures the inventory of hosts and recurring/ad‑hoc scan policies are accurate.
• Reviews the scans to confirm correct, actionable data is generated to support the patching activities.
• Reviews STIG results and supports the team in implementing corrective action as applicable.

For endpoint management:

• Ensures all hosts can be seen in the endpoint security application with ongoing monitoring and applicable policies applied.
• Triages all alerts from the tool to ensure activity in the environment is authorized.
• For insider threat monitoring:
• Ensures deployment of tool and related modules are performing as intended.
• Monitors aggregate user data as directed.
• Designs, develops, tests, and evaluates information system security throughout the systems development life cycle.

• Education:
  
  BA/BS Degree or equivalent experience in lieu of degree
• Experience:
  
  8+ years of related experience
• Ability to use security operations of Splunk and Trelix.
• Ability to update security applications, such as Splunk and Trelix.
• Ability to harden the system using STIGs.
• Ability to update the underlying security tools Linux operating system.
• Role requirements:
  
  Knowledge of the complete NIST SP 800 series (especially 800‑37, 800‑53, 800‑30) and risk management principles.
• Certifications:
  
  Must be DoD 8140 / 8570.01‑M compliant (e.g., including but not limited to Security+)
• Investigation/Clearance Level:
• Must…