Cybersecurity Engineer; Clearance Required

US-Remote

LMI is seeking a Cybersecurity Engineer to support an Army program modernizing platform infrastructure through secure, scalable, and cloud-enabled systems. This role serves as a cybersecurity advisor to the Information System Security Manager, System Owners, and technical engineering teams. The engineer maintains authorization artifacts, coordinates remediation, and helps integrate security into cloud operations and Agile delivery.

LMI is a new breed of digital solutions provider dedicated to accelerating government impact with innovation and speed. Investing in technology and prototypes ahead of need, LMI brings commercial-grade platforms and mission-ready AI to federal agencies at commercial speed.

Leveraging our mission-ready technology and solutions, proven expertise in federal deployment, and strategic relationships, we enhance outcomes for the government, efficiently and effectively. With a focus on agility and collaboration, LMI serves the defense, space, healthcare, and energy sectors-helping agencies navigate complexity and outpace change. Headquartered in Tysons, Virginia, LMI is committed to delivering impactful results that strengthen missions and drive lasting value.

• Maintain the system security authorization package in the Enterprise Mission Assurance Support Service (eMASS).
• Prepare and maintain Risk Management Framework artifacts, including the System Security Plan, Security Assessment Report, Continuous Monitoring Strategy, and supporting control evidence.
• Curate and validate evidence for the transition from NIST SP 800-53 Revision 4 to Revision 5 and for ongoing security control implementation.
• Create, track, and update Plans of Action and Milestones in eMASS and internal ticketing workflows.
• Work with System Owners, Cloud Architects, System Engineers, and System Administrators to define remediation timelines, risk mitigation statements, and resource needs.
• Review noncompliance closures and remediation evidence before submission for ISSM and Authorizing Official approval.
• Assess the technical and operational impact of directed cybersecurity tasks on cARMY AWS architecture, workloads, and cloud boundaries.
• Conduct and review DISA Security Technical Implementation Guides and Security Requirements Guides using STIG Viewer and automated compliance tools.
• Integrate vulnerability analysis, secure configuration validation, and related Dev Sec Ops  activities into Git Lab CI/CD and Agile workflows.
• Support continuous monitoring and vulnerability scanning through ACAS and related tools.
• Maintain cybersecurity dashboards and track POA&M aging, vulnerability trends, operational security tickets, incident responses, and change approvals.

Required qualifications

• Active Secret security clearance.
• Bachelor's degree in Computer Science, Information Systems, Cybersecurity, or a related field.
• 5 or more years of experience in cybersecurity engineering, information assurance, RMF, or secure systems operations.
• Active DoDI 8140 qualification.
• Strong understanding of DoD cloud security, including AWS Gov Cloud, Azure IL5 or IL6, Zero Trust, and hybrid architectures.
• Experience developing or maintaining RMF authorization artifacts and managing POA&M in eMASS or a comparable authorization workflow.
• Practical experience applying NIST SP 800-53 controls, DoD STIGs, and security assessment requirements during system development or sustainment.
• Experience with cloud security operations, vulnerability management, or security monitoring in AWS or another cloud environment.
• Familiarity with Agile development, Dev Sec Ops  principles, and secure system lifecycle planning.
• Clear communication skills and experience…