Information System Security Officer

Job Description

Job Description

Position Title : Senior Information Systems Security Officer (ISSO)

Location : Scottsdale, AZ (Onsite)

Clearance Requirement : U.S. Citizen, active DoD Secret clearance or higher

Job Type : Full-Time

Position Overview :

SASSI is seeking an experienced Senior Information Systems Security Officer (ISSO) to support a DoD customer in Scottsdale, AZ. This role plays a critical part in securing systems across on-prem and commercial cloud environments, supporting initial system delivery, authorization, and ongoing cybersecurity efforts.

The ideal candidate holds a CISSP or CISM certification and brings 5–10 years of relevant cybersecurity or IT experience. You’ll work closely with the ISSM, System Owner, and Authorizing Officials, contributing to the development and maintenance of authorization documentation and ongoing security posture.

Key Responsibilities :

• Collaborate with the Information System Security Manager (ISSM), Information System Owner (ISO), and DoD Authorizing Official team.
• Develop, update, and maintain system security documentation including the SSP, SCTM, and RMF Body of Evidence.
• Ensure assigned systems maintain an appropriate security posture.
• Prepare systems for RMF assessments in accordance with NIST SP 800-37, 800-53, and related guidance.
• Identify security deficiencies and support resolution via POA&Ms and risk acceptance documentation.
• Monitor systems continuously to ensure compliance with the authorization package.
• Assist with system administration and the maintenance of cybersecurity tools (e.g., audit logs, vulnerability management, endpoint protection).
• Support change management processes and evaluating the security impact of proposed changes.
• Conduct regular audit log reviews (daily, weekly, monthly) and track findings.
• Participate in engineering and integration efforts across the customer’s production environment.
• Communicate clearly and professionally with both government and contractor audiences, in writing and verbally.

Basic Qualifications :

Strong working knowledge of RMF, ICD 503, NIST SP 800-53, and JSIG / DJSIG

Preferred Qualifications :

Work Schedule :