Senior Cybersecurity Engineer SME

Location: El Segundo, CA

Job Status: Full time
Clearance Required: Active DoD TS/SCI
Salary Range: $190,000 – $219,000 (DOE)

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 Information Systems Security Manager (ISSM), ensuring the secure operations of enterprise networks, mission-critical systems, and sensitive data across the directorate.

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

Minimum Requirements

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

• MA or MS degree

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

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

• Hands-on experience with eMASS.

Preferred Qualifications

• Familiarity with Risk Management Framework (RMF) protocols.

• Knowledge of USSF A&A procedures.

• CISSP, GIAC, or equivalent advanced cybersecurity certification.

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

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

Key Responsibilities

• • 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.

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