Jobs and Careers

Information System Security Manager (ISSM)

Washington, United Statesfull_timeVerifiedPosted 3 Jun 2025

About the role

At MetaPhase, we believe Quirky is Cool and being authentic is the only way to be! We take the work we do very seriously and do a lot of important mission-focused work for our clients. We are individuals with different passions and strengths who take as much joy in the work we do as from those we work with. Today, we have a team that is invested in creating new solutions that lean forward, challenge the status quo, but also reflect our intimate knowledge of our customers’ business. Over the years we have fostered a culture in which we are united by shared values—passion, solidarity, generosity, curiosity, and boldness—and these come alive in the work we do and how we do it. Together, we know our people are our difference—for our clients and our colleagues. Are you ready to:

Work alongside a dedicated and diverse set of people to offer honest advice and practical guidance to our clients?
Learn and grow by taking advantage of every opportunity available to you?
Be the difference and make it happen?

MetaPhase is seeking a mission-driven Information System Security Manager (ISSM) to lead and oversee security compliance and operational assurance for a federal client in the national security sector. This position plays a critical role in implementing cybersecurity best practices, maintaining system authorizations, and ensuring alignment with federal information security standards. As the ISSM, you will serve as the central authority on system security posture and be a trusted advisor to senior client leadership and Authorizing Officials. What You Will Be Doing

Serve as the lead ISSM for a portfolio of systems, overseeing system security plans (SSPs), continuous monitoring, and POA&M management
Lead risk assessments and ensure systems maintain Authorization to Operate (ATO) in accordance with NIST RMF and agency-specific frameworks
Collaborate with ISSOs and technical teams to ensure timely submission and quality of security documentation
Implement and enforce cybersecurity policies, procedures, and practices in alignment with FISMA, NIST 800-53, and DoD 8140 requirements
Engage with federal stakeholders and Authorizing Officials to support security reviews, inspections, and audits
Drive continuous improvement in cybersecurity posture through vulnerability management and security control enhancements
Mentor junior ISSOs and support staff; guide project teams on secure implementation practices

What We Need From You (Required)

U.S. Citizenship is required (NO EXCEPTIONS)
Bachelor’s degree in Cybersecurity, Information Systems, or related technical field
10+ years of experience in cybersecurity, including 3+ years managing or serving as a lead ISSM
Proven expertise with FISMA, NIST 800-53, and RMF implementations
Experience supporting classified or national security systems
Strong communication skills, including briefing senior government executives
Must hold (or obtain within 6 months) a CISSP, CISM, or equivalent DoD 8140-compliant certification

Bonus Points (Preferred)

Experience managing multiple ATO packages across enterprise systems
Background in interfacing with federal Authorizing Officials
Certifications: PMP, ITIL, or additional cybersecurity certs (e.g., CEH, CRISC)
Familiarity with SIEM platforms, STIGs, SCAP tools, and secure SDLC

Work Setup & Travel
Hybrid - Based in Washington, DC. Occasional travel may be required. Clearance & Education
Active Top Secret (TS) with SCI eligibility or Active Q Clearance
Bachelor’s degree in Information Technology, Cybersecurity, or a related field About MetaPhaseMetaPhase is different with a purpose - demonstrating a new approach to the industry that puts employees and culture first! We continue to be recognized by industry as one of the fastest growing and most impactful consultancies in the nation, and are aggressively hiring to grow our team: Fastest Growing