LMI is seeking a RFMSS System Administrator to support the Army’s Range Facility Management Support System (RFMSS). This role supports operations, system administration, and technical troubleshooting for RFMSS as part of a fast-paced, mission-critical program focused on modernizing Army training systems. The successful candidate will have strong technical expertise, customer service skills, and a proactive approach to problem-solving.

At LMI, we’re reimagining the path from insight to outcome at the new speed of possible. Combining a legacy of over 60 years of federal expertise with our innovation ecosystem, we minimize time to value and accelerate mission success. We energize the brightest minds with emerging technologies to inspire creative solutioning and push the boundaries of capability. LMI advances the pace of progress, enabling our customers to thrive while adapting to evolving mission needs. Come join the organization consistently ranked as a top workplace! 

Responsibilities:

• Serve as the primary system administrator for RFMSS environments, including production, test, and development systems.
• Monitor system performance and ensure high availability and reliability of RFMSS applications and services.
• Perform patch management, software updates, and system backups in compliance with cybersecurity and RMF standards.
• Maintain and configure RFMSS servers, databases, and web applications.
• Troubleshoot system issues and coordinate with development, cybersecurity, and network teams to resolve outages or incidents.
• Support account management, user permissions, and system access requests in accordance with organizational policies.
• Document standard operating procedures (SOPs), system configurations, and maintenance activities.
• Collaborate with cybersecurity personnel to ensure compliance with DISA STIGs and vulnerability remediation requirements.
• Provide technical support to RFMSS users and stakeholders, including issue tracking and resolution through ticketing systems.
• Participate in system upgrades, data migrations, and other modernization activities related to RFMSS.
• Assist in the development and execution of contingency and disaster recovery plans.
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Required:

• Bachelor’s degree in Computer Science, Information Systems, or a related field (or equivalent experience).

• 5+ years of experience in system administration, preferably supporting DoD systems or applications.

• Active DoD Secret clearance.

• Experience with Windows Server administration, IIS, and SQL Server.

• Familiarity with DoD cybersecurity compliance frameworks, including RMF and eMASS.

• Experience applying DISA STIGs and remediating vulnerabilities.

• Ability to work independently and as part of a cross-functional team in a fast-paced environment.

• Strong verbal and written communication skills.

• Must be willing to travel to PI Planning events once per quarter.  

Preferred:

• Experience with RFMSS or similar Army training systems.

• CompTIA Security+ CE or higher IAT Level II certification (required to meet DoD 8570 requirements).

• Familiarity with ACAS scans, POA&Ms, and system hardening best practices.

• Experience working within AWS GovCloud or similar cloud environments.