Senior ISSE: RMF, Cloud Security & Accreditation Lead

NS2 Mission; Northern (KY); On-site; USD 120,000 - 180,000; Full time

Job summary

NS2 Mission is seeking an experienced Information Systems Security Engineer (ISSE) to support our team in the Northern VA area. You will help ensure security, compliance, and accreditation of mission-critical systems across enterprise and cloud environments, working with ISSMs and government stakeholders to guide systems through the RMF lifecycle.

You will develop SSPs and related security documentation, maintain security posture, and collaborate with engineers to ensure security compliance and

Qualifications

• Senior-level experience supporting Information Systems Security Engineering activities.
• 5+ years of experience maintaining the security posture of enterprise and cloud computing environments.
• Experience managing security accreditation efforts under the ICD 503 Rev. 4 framework.
• Strong understanding of Sponsor information security policies and the RMF.
• 5+ years of experience developing and maintaining System Security Plans (SSPs) and related security documentation.

Responsibilities

• Maintain and enhance the security posture of enterprise and cloud-based computing environments.
• Lead security accreditation efforts throughout the full system lifecycle in accordance with ICD 503 Rev. 4 and the RMF.
• Develop, maintain, and update System Security Plans (SSPs) and other required security documentation.
• Partner with ISSMs, engineers, and program leadership to ensure security compliance and accreditation readiness.
• Assess system risks, identify security gaps, and recommend mitigation strategies to maintain compliance.
• Interpret and apply Sponsor security policies, standards, and cybersecurity best practices.
• Support continuous monitoring activities and help ensure ongoing security compliance for mission systems.
• Collaborate with technical teams to integrate security requirements throughout the system development lifecycle.

Skills

RMF expertise

ICD 503 Rev.4 knowledge

SSP development

Cloud security

Stakeholder collaboration

Job description

NS2 Mission is seeking an experienced Information Systems Security Engineer (ISSE) to support our team in the Northern VA area. You will help ensure security, compliance, and accreditation of mission-critical systems across enterprise and cloud environments, working with ISSMs and government stakeholders to guide systems through the RMF lifecycle.

You will develop SSPs and related security documentation, maintain security posture, and collaborate with engineers to ensure security compliance and