Senior ISSO - RMF & Zero Trust Lead (TS/SCI)

Zachary Piper Solutions; Reston (VA); Hybrid; USD 170,000 - 190,000; Full time

Benefits offered by this job

Medical benefits

Dental benefits

Vision benefits

401(k)

PTO

Sick leave

Federal holidays

Job summary

Zachary Piper Solutions is seeking a Senior Information Systems Security Officer (ISSO) to lead RMF activities and accreditation efforts for a mission-critical government information system in Reston, VA. The role requires coordinating with engineering teams and federal stakeholders to maintain compliance across secure enterprise environments.

The ideal candidate has TS/SCI clearance with polygraph, Security+ (DoD 8570/8140 IAT II/III) or equivalent, and extensive experience applying NIST 800-53

Qualifications

• 18+ years of experience in cybersecurity, information assurance, systems security engineering, or related disciplines.
• Prior experience serving as an ISSO, ISSE, or cybersecurity lead supporting federal systems.
• Extensive experience with RMF, XACTA, ICD 503, NIST 800-53, SSPs, POA&Ms, and accreditation packages.
• Experience supporting IATT and ATO processes within government environments.
• Proficiency with Splunk and enterprise security monitoring solutions.
• Strong understanding of cybersecurity compliance, risk management, and security control implementation.
• Excellent communication, documentation, and stakeholder engagement skills.

Responsibilities

• Lead RMF activities and support certification, accreditation, IATT, and ATO efforts.
• Conduct security assessments and evaluate system compliance with federal cybersecurity requirements.
• Develop and maintain SSPs, POA&Ms, SAPs, and accreditation artifacts within XACTA.
• Implement, assess, and validate NIST 800-53 security controls.
• Coordinate with engineers, developers, DBAs, system administrators, and testers to maintain system compliance.
• Support security assessment events, audits, and interactions with Authorizing Officials and Security Control Assessors.
• Monitor security posture and recommend risk mitigation and corrective actions.
• Apply Zero Trust security principles across enterprise and cloud-native environments.
• Conduct vulnerability analysis, remediation tracking, and continuous monitoring activities.
• Provide cybersecurity guidance to program stakeholders and technical teams.

Skills

ISSO leadership

Cybersecurity expertise

Communication skills

Education

Security+ or DoD 8570/8140 IAT II/III

Tools

Splunk

Job description

Zachary Piper Solutions is seeking a Senior Information Systems Security Officer (ISSO) to lead RMF activities and accreditation efforts for a mission-critical government information system in Reston, VA. The role requires coordinating with engineering teams and federal stakeholders to maintain compliance across secure enterprise environments.

The ideal candidate has TS/SCI clearance with polygraph, Security+ (DoD 8570/8140 IAT II/III) or equivalent, and extensive experience applying NIST 800-53