Information System Security Officer (ISSO)

We are seeking a cleared Information System Security Officer (ISSO) to support classified systems operating within the DoD Risk Management Framework (RMF) and JSIG environments. This role is highly documentation‑focused and centered on ATO support, continuous monitoring, audit readiness, and compliance across multiple classified networks. The ISSO will primarily support the ISSM and may assume ownership of smaller ATO efforts based on workload and system scope. This role will be a 3-6-month contract to hire opportunity!

Key ResponsibilitiesServe as the ISSO for multiple classified systems, supporting RMF lifecycle activities under ISSM directionCreate, update, and submit security authorization artifacts for:

New hardware and software extensionsRMF updates and control changesSupport and maintain ATO packages, including initial authorizations, renewals, and extensionsMonitor and assess 3-5 classified networks, averaging ~1 hour per network for compliance and security reviewsExecute and document continuous monitoring activities using approved security toolsParticipate in and support routine audits, inspections, and DoD compliance submissionsPartner with IT and engineering teams to ensure controls, scans, and audit activities are executed correctlyConduct vulnerability scanning on a recurring schedule (not a primary time driver)Support systems currently partially complete within the

NIST RMF

lifecycleParticipate in regular stakeholder syncs with ISSM, IT, security teams, and government representativesOperate within a classified, air-gapped environment supporting a mixed operating system infrastructure