Cybersecurity Engineer Subject Matter Expert; SME

Overview

Cybersecurity Engineer, Senior 84s/1s

Location: Huntsville Alabama

Job Status: Full time

Clearance Required: Active DoD TS/SCI

Astrion is seeking a Senior
Cybersecurity Engineer to join our prime contract supporting STS-3 in Huntsville Alabama. 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.

• 20+ 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.

• 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.

• 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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