(703) Cybersecurity Information System Security Officer (ISSO)

Arlo Solutions LLC•Arlington, VA

4d•Hybrid

About The Position

Arlo Solutions is seeking an experienced Information System Security Officer (ISSO) to support the Office of the Under Secretary of War for Acquisition & Sustainment (OUSW(A&S)). This hybrid position supports cybersecurity operations at the Pentagon and Alexandria, Virginia, providing leadership across the full DoD Risk Management Framework (RMF) lifecycle for multiple information systems supporting Controlled Unclassified Information (CUI) through classified environments. The ISSO serves as the primary cybersecurity advisor responsible for ensuring systems remain secure, compliant, and mission-ready by leading Assessment & Authorization (A&A), Continuous Monitoring (ConMon), cybersecurity governance, and risk management activities. The position requires close collaboration with Program Managers, Information System Owners, Engineers, Security Control Assessors (SCAs), Authorizing Officials (AOs), and senior Government leadership to integrate cybersecurity throughout the system lifecycle.

Requirements

Active Top Secret Security Clearance (SCI eligibility preferred)
Bachelor's degree in Cybersecurity, Computer Science, Information Technology, Engineering, or related field (or equivalent experience)
Minimum 8 years supporting DoD cybersecurity programs
Minimum 5 years supporting DoD RMF and Assessment & Authorization activities
Experience managing multiple RMF authorization packages and briefing senior Government leadership
Excellent analytical, written, verbal, and presentation skills
Candidates should meet applicable DoD 8140 Cyber Workforce Qualification Program requirements.

Nice To Haves

SCI eligibility preferred
Certified Information Systems Security Professional (CISSP)
Certified Information Security Manager (CISM)
CompTIA CASP+
Certified Cloud Security Professional (CCSP)
DoD Risk Management Framework (RMF) and Assessment & Authorization (A&A)
Continuous Monitoring (ConMon) and cybersecurity governance
System Security Plans (SSPs), Security Assessment Reports (SARs), Risk Assessment Reports (RARs), and POA&M management
Security control implementation, validation, inheritance, and reciprocity
Vulnerability management, STIG compliance, ACAS, and cybersecurity reporting
eMASS, Xacta, or comparable Governance, Risk, and Compliance (GRC) platforms
Microsoft Windows, Linux, virtualization, enterprise networking, and cloud environments supporting FedRAMP High and the DoD Cloud Computing Security Requirements Guide (SRG)
Zero Trust Architecture (ZTA) and secure system engineering principles

Responsibilities

Serve as the ISSM for multiple DoD information systems supporting OUSW(A&S) mission requirements.
Lead all phases of the DoD Risk Management Framework (RMF), including system categorization, control implementation, assessment, authorization, and continuous monitoring.
Develop and maintain RMF authorization packages, including System Security Plans (SSPs), Security Assessment documentation, Plans of Action & Milestones (POA&Ms), Continuous Monitoring artifacts, and supporting Body of Evidence (BoE).
Coordinate Assessment & Authorization (A&A) activities supporting Authorization to Operate (ATO), Interim Authorization to Test (IATT), Authorization to Operate with Conditions (ATO-C), and system reauthorization.
Manage Continuous Monitoring (ConMon), vulnerability management, STIG compliance, security control implementation, and cybersecurity reporting.
Conduct cybersecurity risk assessments and provide recommendations supporting Authorizing Official (AO) risk decisions.
Coordinate Security Control Assessments (SCAs), validate remediation activities, and ensure timely closure of assessment findings.
Review system architectures, authorization boundaries, data flows, and proposed changes to maintain cybersecurity compliance.
Provide cybersecurity guidance to Government leadership, Program Managers, engineers, ISSOs, ISSEs, and system administrators.
Prepare executive briefings, authorization recommendations, and cybersecurity status reports for senior Government leadership.
Support implementation of Zero Trust Architecture (ZTA), cloud security, DevSecOps, reciprocity, inherited controls, and enterprise cybersecurity governance initiatives.