Security Control Assessor Representative (SCAR)

Astrion; El Segundo (CA); On-site; USD 144,000 - 176,000; Full time

Job summary

Astrion seeks a Senior Cybersecurity Engineer (SCAR) in El Segundo, CA to provide hands-on A&A support for Space Systems Command and drive RMF compliance across critical networks and data.

The role requires active TS/SCI clearance, 15+ years of federal cybersecurity experience, RMF and eMASS expertise, and strong communication to coordinate with DoD stakeholders while traveling for onsite assessments.

Qualifications

• 15+ years of cybersecurity experience with DoD or federal agencies.
• Familiarity with RMF protocols and eMASS.
• Knowledge of USSF A&A procedures with hands-on eMASS experience.
• Active DoD TS/SCI clearance.
• DoD 8570/8140 IAT/IAM certification (e.g., Security+ or equivalent).

Responsibilities

• Support the Authorizing Official and Security Control Assessor under RMF.
• Provide cybersecurity engineering expertise for enterprise mission systems.
• Develop and manage eMASS entries and coordinate A&A packages per DoDI 8510.01.
• Maintain CA schedules and ITIPS registrations in compliance with FISMA.
• Refine certification policies and reports for evolving cyber requirements.
• Research DoD/USSF directives and assess impact on security posture.
• Support Vulnerability Management System processes and document findings.
• Contribute to ST&E, penetration testing, and control validation.
• Revalidate cyber and IA controls and recommend improvements.
• Assess policy changes and travel for onsite assessments.

Skills

15+ years cybersecurity experience

RMF familiarity

USSF A&A procedures with eMASS

Active DoD TS/SCI clearance

DoD 8570/8140 IAT/IAM certification

CISSP / GIAC

Strong organizational communication

Travel onsite

Education

Technical MA or MS degree

Job description

Overview

Senior Cybersecurity Engineer (SCAR)

Location: El Segundo, CA

Job Status: Full time

SALARY RANGE: Estimated $160,000 +annually*

*depending on experience, certifications, and qualifications

Clearance Required: Active DoD TS/SCI

Astrion is seeking a Senior Cybersecurity Engineer SME to join our prime contract supporting STS-3 in El Segundo, CA. This role will provide direct Assessment & Authorization (A&A) support to the Space Systems Command Authorizing Officia and Security Conrol Assessor (SCA), ensuring the secure operations of enterprise networks, mission-critical systems, and sensitive data across Space Systems Command (RDT&E) Authorizing Official (AO) subordinate enclave.

You will play a hands-on role in Cybersecurity Analysis, Engineering, and Risk Management Framework (RMF) compliance, and Enterprise policy driving mission assurance for some of the nation’s most important space systems.

REQUIRED QUALIFICATIONS / SKILLS

15+ years of cybersecurity experience supporting USSF, DoD, or related federal organizations.

Familiarity with Risk Management Framework (RMF) protocols.

Knowledge of USSF A&A procedures with hands-on experience with eMASS

Active DoD TS/SCI clearance (with current investigation).

CompTIA Security+ or equivalent DoD 8570/8140 IAT/IAM certification.

PREFERRED QUALIFICATIONS / SKILLS

Prior SCA / SCAR / ASCA experience within DoW and USSF.

CISSP, GIAC, or equivalent advanced cybersecurity certification.

Strong organizational, interpersonal, and communication skills with attention to detail.

Technical MA or MS degree

Advanced skills in Microsoft Word, Excel, PowerPoint, and Outlook.

RESPONSIBILITIES

Support the Authorizing Official and Security Control Assessor by ensuring adherence to the DoD RMF process, driving cyber‑hardening efforts, and tracking progress along the Road to ATO.

Support A&A activities and provide cybersecurity engineering expertise for enterprise mission systems.

Develop, update, and manage Enterprise Mission Assurance Support Service (eMASS) entries and coordinate A&A packages in accordance with DoDI 8510.01 (RMF).

Maintain and report on C&A schedules, package status, and system registrations in ITIPS (formerly EITDR) in compliance with FISMA.

Review and refine certification policies, procedures, and reports for new and evolving cyber system requirements.

Conduct research and analysis to assess the impact of new DoD, USSF, DIA, and DISA cybersecurity directives.

Support Vulnerability Management System (VMS) processes by documenting, tracking, and closing compliance findings.

Contribute to Security Test & Evaluation (ST&E) efforts, penetration testing, and validation of cybersecurity controls.

Revalidate cyber and IA controls for accredited systems and recommend improvements to strengthen mission assurance.

Assess policy changes from higher headquarters and determine impact on current mission system security posture.

Travel is required during onsite assessments.

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