Excentium, Inc · 11 hours ago
SENIOR ATO SME
DC-Baltimore Area
Full-time
Hybrid
Senior Level
7+ years expExcentium, Inc is a Service-Disabled Veteran-Owned Small Business providing cybersecurity and IT services to federal agencies. They are seeking a Senior ATO SME to serve as an Information System Security Officer and manage security assessments and documentation for federal systems.
Asset ManagementCyber SecurityInformation Technology
No H1B
Security Clearance RequiredU.S. Citizen Only
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)
Qualification
Required
Minimum clearance level: Public Trust + Suitability
Citizenship: US Citizenship
Education: 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
Certification Requirements: One (1) of the following: CISSP, CAP, CISM, CISA, Security+, or equivalent
Benefits
Medical
Dental
Life
Disability
401k
Paid time off
Company
Excentium, Inc
Excentium, Inc. is a Service Disabled Veteran-Owned Small Business (SDVOSB) and a FedRAMP accredited 3PAO.
51-200 employees
Funding
Current Stage
Growth StageLeadership Team
Colin Corlett, CISSP
President/CEO
DOMINIC (Nick) ZITO
Chief Operating Officer
Recent News
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