Senior ISSO - Strategic Security Lead for Classified Programs

Unity Compass; Alexandria (VA); Hybrid; USD 90,000 - 175,000; Full time

Job summary

Unity Compass seeks an experienced Information System Security Officer (ISSO) to support a mission-critical program across classified environments. You will oversee authorizations, risk management, and compliance for processing, storage, and transmission of sensitive information.

Responsibilities include maintaining SSPs/POA&Ms, coordinating A&A activities, and guiding teams to meet DoD/NIST standards. Strong leadership and program-management support are essential for accreditation and security

Qualifications

• US citizenship is required for contract work.
• BS degree plus 8–12 years of relevant experience.
• Familiarity with ICD-503 and NIST RMF guidance.
• Experience with XACTA/XACTA 360, HBSS, ACAS, Nessus, and SPLUNK.

Responsibilities

• Develop risk mitigation strategies aligned to project goals and business processes.
• Maintain security documentation such as SSPs, POA&Ms, and Commissioning Ops concepts.
• Manage System Security Plans in ServiceNow, XACTA, and Leidos tools.
• Lead security change cycles through review boards to meet RM milestones.
• Provide guidance to program lab teams for secure software/hardware practices.
• Address security findings and coordinate remediation with stakeholders.
• Communicate security posture and status to leadership and clients.
• Develop and update A&A activities with DAO/DAOR coordination.
• Ensure compliance with DoD/NIST/IC standards across environments.

Skills

Technical leadership

Program management support

Security policy development

Risk management

Education

BS degree

Tools

XACTA

XACTA 360

HBSS

ACAS

Nessus

SPLUNK

Job description

Unity Compass seeks an experienced Information System Security Officer (ISSO) to support a mission-critical program across classified environments. You will oversee authorizations, risk management, and compliance for processing, storage, and transmission of sensitive information.

Responsibilities include maintaining SSPs/POA&Ms, coordinating A&A activities, and guiding teams to meet DoD/NIST standards. Strong leadership and program-management support are essential for accreditation and security