Overview 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. Responsibilities LMI is seeking a skilled Senior System Admin at our headquarters office in Colorado Springs CO. Responsibilities of the position may include: • Perform system builds, security hardening, and deployment across multiple DoW environments and classification levels. • Familiar with working in SCI/SAP environments; understand standard SCIF process and protocols. • Apply networking concepts involving firewalls and routers. • Utilize systems analysis techniques and procedures to resolve IT hardware and software infrastructure issues. • Collaborate with IT teams to maintain optimal infrastructure performance and availability. • Produce and maintain technical documentation, diagrams, and Standard Operating Procedures (SOPs). • Work independently with a high degree of motivation; managing and prioritizing tasks in a dynamic environment. • Provide excellent customer service and effectively communicate and brief government leadership. • Active Top-Secret clearance with SCI eligibility • DoD 8140/8570 IAT Level II certification (Security+, CISSP, CCNA, etc.). Qualifications MINIMUM QUALIFICATIONS: • Bachelor’s degree in related discipline • 7+ years’ experience in IT infrastructure management • Experience and proficiency with MS Office Suite (Excel, Outlook, PowerPoint, Project, Word), SharePoint, Defense Connect Online (DCO) • US citizen with a Top Secret SCI clearance required • Ability to understand and implement Agile concepts and principles. • Skilled in interpreting and applying Security Technical Implementation Guides • Deep understanding of TCP/IP, DNS, DHCP, VLANs, and firewall management. • Strong analytical and organizational skills • Proven analytical and problem-solving abilities. • Ability to effectively prioritize and execute tasks in a high-pressure environment. • Strong communication skills and ability to adapt communication to a specific audience • Highly self-motivated and directed. • Team-oriented and skilled in working within a collaborative environment. Job Locations US-CO-Colorado Springs