Information Systems Security Officer (SME) with Security Clearance

Job Description Everforth ECS is seeking an Information Systems Security Officer SME to work in our Washington, DC office.

Please Note:

This position is contingent upon contract award. We are seeking a cleared Information Systems Security Officer SME to lead cybersecurity compliance, authorization, continuous monitoring, audit support, risk management, and security documentation activities for classified and sensitive systems supporting law enforcement, national security, and criminal justice missions within the National Security Business Unit. The ISSO SME will serve as a senior cybersecurity advisor responsible for maintaining security posture, supporting authorization activities, managing security documentation, advising technical teams on risk, supporting audits, and ensuring systems comply with applicable federal, agency, and mission security requirements.

The Information Systems Security Officer SME will lead cybersecurity compliance, authorization, continuous monitoring, audit support, risk management, and security documentation activities for classified and sensitive systems supporting law enforcement, national security, and criminal justice missions. This role ensures systems maintain a strong security posture and comply with applicable federal, agency, and mission security requirements. The ISSO SME will also support National Security Business Unit growth by identifying cybersecurity service expansion opportunities, compliance improvement initiatives, continuous authorization enhancements, risk-reduction strategies, audit support improvements, and security modernization needs.

Responsibilities
* Lead cybersecurity compliance, authorization, risk management, and continuous monitoring activities.
* Maintain security documentation, control implementation records, POA&Ms, security plans, policies, and procedures.
* Conduct or support control assessments, audit readiness, vulnerability remediation, and security impact reviews.
* Review security impacts of new applications, devices, system changes, and operational updates.
* Coordinate incident response planning, contingency planning, annual testing, and cybersecurity reporting.
* Advise system owners, engineers, developers, administrators, and operations teams on risk-based security decisions.
* Mentor ISSOs, security engineers, administrators, developers, and operations staff on compliance and security workflows.
* Establish repeatable templates, dashboards, processes, and documentation practices.
* Identify cybersecurity modernization, compliance improvement, continuous authorization, and service expansion opportunities. Salary Range: $160,000-$175,000 Required Skills
* Active Top Secret clearance with SCI eligibility; TS/SCI preferred.
* 10+ years of cybersecurity, ISSO, authorization, compliance, risk management, or security engineering experience.
* Experience with federal cybersecurity frameworks, security control assessments, POA&Ms, audits, vulnerability management, and continuous monitoring.
* Experience supporting security documentation, authorization packages, incident response plans, and security policies.
* Strong understanding of secure system operations, risk management, and security compliance.
* Ability to communicate cybersecurity risks and requirements to technical teams, mission stakeholders, and leadership. Desired Skills
* CISSP, CISM, CAP, Security+, CASP+, CySA+, or related certification.
* Experience with JCAM, NIST, FISMA, CNSS, IC, Tenable/Nessus, SIEM, vulnerability reporting, or continuous authorization processes.
* Experience supporting classified, law enforcement, national security, criminal justice, defense, or intelligence environments.
* Experience mentoring security teams and contributing to cybersecurity solutioning, account growth, or service expansion. ECS Federal LLC is an equal opportunity employer and does not discriminate or allow discrimination on the basis any characteristic protected by law. All qualified applicants will receive consideration for employment without regard to disability, status as a protected veteran or any other status protected by applicable federal, state, or local jurisdiction law.

is the federal segment of , a $4B global organization with over 10,000 employees. Our nearly 3,500 professionals deliver advanced technology solutions in data and AI, cybersecurity, and enterprise transformation, serving defense, intelligence, and federal civilian agencies. Our work powers mission-critical outcomes, strengthens technology partnerships, and creates meaningful opportunities for our people. We are defined by a commitment to excellence in delivery, a culture of innovation, and an environment where talent can thrive and grow.

We value:
* Attracting and developing top talent and high-performing teams
* Fostering a culture that is engaging, accountable, and mission-driven Meet the challenge. Make a difference with Everforth ECS!