Senior Ato Sme

Excentium • Washington D.C. Metro Area, DC

2d • Remote

About The Position

We have an opportunity for a SENIOR ATO SME (Cybersecurity Engineer III) supporting one of our Federal customers in Washington D.C. MINIMUM CLEARANCE LEVEL: Public Trust + Suitability CITIZENSHIP: US Citizenship LOCATION: REMOTE — Primarily telework; occasional on-site as needed for coordination work, Washington D.C. Employment Type: Full-Time Position Description: Serve as Information System Security Officer (ISSO) for assigned BOP systems Develop, review, and maintain System Security Plans (SSPs) and supporting documentation Execute Security Control Assessments (SCAs) using NIST 800-53A methodology Prepare Security Assessment Reports (SARs) documenting control implementation status Create, track, and manage Plans of Action & Milestones (POA&Ms) through remediation Coordinate with system owners and developers to implement security controls Conduct security impact analysis for system changes and updates Support continuous monitoring activities including vulnerability tracking and reporting Maintain authorization artifacts in JCAM (DOJ's GRC platform)

Requirements

• Bachelor's degree in IT, Cybersecurity, Computer Science, or related field.
• Minimum 7 years in federal cybersecurity, RMF, or information assurance
• Strong knowledge of NIST RMF lifecycle and federal security frameworks
• Experience developing SSPs, SARs, and POA&Ms for federal systems
• Proficiency with vulnerability scanning tools (Tenable Nessus, Qualys, etc.)
• Experience with GRC platforms (eMASS, XACTA, CSAM, or similar)
• Understanding of FISMA requirements and federal continuous monitoring
• Knowledge of common security controls across AC, AU, CM, IA, SC families
• Ability to assess control implementation and document findings
• Strong technical writing skills for security documentation
• One (1) of the following: CISSP, CAP, CISM, CISA, Security+, or equivalent
• MINIMUM CLEARANCE LEVEL: Public Trust + Suitability
• CITIZENSHIP: US Citizenship

Responsibilities

• Serve as Information System Security Officer (ISSO) for assigned BOP systems
• Develop, review, and maintain System Security Plans (SSPs) and supporting documentation
• Execute Security Control Assessments (SCAs) using NIST 800-53A methodology
• Prepare Security Assessment Reports (SARs) documenting control implementation status
• Create, track, and manage Plans of Action & Milestones (POA&Ms) through remediation
• Coordinate with system owners and developers to implement security controls
• Conduct security impact analysis for system changes and updates
• Support continuous monitoring activities including vulnerability tracking and reporting
• Maintain authorization artifacts in JCAM (DOJ's GRC platform)

Benefits

• Excentium offers a competitive salary and comprehensive benefits package, including medical, dental, life, disability, 401k, and paid time off.
• Excentium , Inc. is an equal opportunity employer.

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level