Platform Security Lead

Defcon AI

Platform Security & RMF Lead defining security for a mission-critical DoD software platform. Owning ATO strategy and leading RMF processes for government-facing systems.

Posted 6/2/2026full-timeRemote • 🇺🇸 United StatesSenior💰 $175,000 - $215,000 per yearWebsite

About the role

Key responsibilities & impact

Define and execute the ATO pathway, including responsibility allocation across government and contractor teams
Author and maintain RMF documentation (SSP, SAP, SCTM, ConMon) in accordance with DoDI 8510.01 and NIST 800-53
Coordinate with eMASS and Authorizing Officials on assessment and authorization activities
Lead continuous monitoring and reauthorization efforts across the system lifecycle
Define security requirements for cross-domain data flows (IL-5, IL-6, tactical edge)
Evaluate and guide selection of DoD-approved cross-domain solutions
Ensure classification-aware data segmentation is enforceable, auditable, and aligned with policy (e.g., NOFORN, REL_TO, ORCON)
Review system architecture to ensure compliant handling of classified data flows
Support secure operation across NIPR, SIPR, and higher classification environments
Define authorization approaches (inheritance vs. standalone ATOs) across enclaves
Ensure security posture scales without requiring fundamentally different architectures
Serve as the authoritative internal resource for DoD security and RMF-related questions
Advise on container security, RBAC, service mesh security, PKI/CAC integration, and secrets management
Define expectations for security scanning, container hardening, and vulnerability management (without owning the pipeline)
Evaluate new capabilities for security and authorization impacts prior to production deployment

Requirements

What you’ll need

10+ years of information assurance or security engineering experience with increasing seniority
5+ years of hands-on ownership of RMF / ATO packages for DoD production systems, including at least one full authorization cycle (categorization → controls → implementation → assessment → authorization → ConMon)
Deep familiarity with DoD security frameworks, RMF processes, and NIST 800-53 controls
Proven ability to operate in complex, multi-enclave or classified environment
US Citizenship Required
Active Secret Clearance
Willing to travel up to 25% for business needs

Benefits

Comp & perks

A fully remote, results-based environment
Competitive salary, bonus, and equity package
100% employer paid, comprehensive health insurance including medical, dental, and vision for you and your family
Unlimited PTO, with your manager’s approval
Flexible work environment where you manage your work day
14 weeks of fully-paid parental leave

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

ATO pathway executionRMF documentationsecurity requirements definitioncross-domain data flow evaluationsecurity scanningcontainer hardeningvulnerability managementDoD-approved cross-domain solutionsclassification-aware data segmentationsecurity posture management

Soft Skills

leadershipcoordinationadvisorycommunicationproblem-solvingorganizational skillsanalytical skillscollaborationdecision-makingmentorship

Certifications

Active Secret Clearance