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Job Title: Information Systems Security Engineer (ISSE) - DCSA Support Location: Fairfax, VA Area - Hybrid (2 Days Onsite / 3 Days Remote) - Local candidates highly preferred Employment Type: Full-Time Clearance Level: Top Secret Required Certification: Active DoD 8570 IAT Level II (e.g., Security+) Salary: $100,000-$150,000 (based on experience) Benefits: Competitive salary and bonus structure, comprehensive health insurance, 401(k) with company match, generous PTO, flexible hybrid work options How to Apply: Apply directly via Metronome's Careers Page or send your resume to Careers@ Position Summary Metronome is seeking an experienced Information Systems Security Engineer (ISSE) to support our mission-critical cloud and cybersecurity initiatives with the Defense Counterintelligence and Security Agency (DCSA). This role plays a key part in developing, securing, and maintaining cloud-based systems while leading and supporting RMF compliance efforts across multiple programs. The ideal candidate will bring deep experience in RMF package development, technical coordination with stakeholders, and strong understanding of cloud environments, particularly AWS. We are seeking someone local to the DMV area who can collaborate with both technical teams and government customers. Key Responsibilities Lead the development and maintenance of RMF package documentation , including Security Plans, SSPs, SARs, and POA&Ms Work closely with ISSOs, system engineers, and cloud engineers to align security requirements with technical solutions Conduct security impact analyses, vulnerability assessments, and risk determinations Provide expert guidance on NIST 800-53 controls implementation and validation Support system audits, ATO submissions, and continuous monitoring activities Assist with security architecture design for AWS and hybrid cloud environments Coordinate with DCSA stakeholders and security authorizing officials Develop security-focused technical documentation and diagrams 5+ years of experience in Information Assurance, Cybersecurity Engineering, or ISSE roles Proven experience supporting RMF lifecycle efforts (especially for DoD customers) Hands-on experience developing or managing ATO packages Familiarity with NIST SP 800-53, DISA STIGs, and continuous monitoring practices Excellent documentation, coordination, and stakeholder communication skills Active Top Secret clearance Active Security+ certification (DoD 8570 IAT Level II compliant) Strong understanding of cloud-based technologies and DevSecOps principles Experience supporting DCSA , DISA, or other DoD security organizations Background in AWS environments and/or hybrid infrastructure Experience working with STIG Viewer , SCAP tools, or eMASS #J-18808-Ljbffr