Senior System Administrator

LMI Consulting, LLC; Colorado Springs (CO); On-site; USD 150,000 - 170,000; Full time

Job summary

LMI Consulting, LLC seeks a Senior System Administrator for our Colorado Springs office. The role requires managing IT infrastructure and deploying secure systems in DoD environments with SCI eligibility and TS clearance.

Responsibilities include system builds, documentation, and coordinating with government leadership. Excellent communication and teamwork are essential in a fast‑paced government contracting setting.

Qualifications

• Bachelor's degree in a related discipline.
• Active Top Secret clearance with SCI eligibility.
• 7+ years of IT infrastructure management experience.
• Experience with MS Office Suite, SharePoint and DCO.
• U.S. citizen with TS clearance required.

Responsibilities

• Perform system builds, security hardening, and deployment across multiple DoD environments and classification levels.
• Work in SCI/SAP environments; understand SCIF processes.
• Apply networking concepts involving firewalls and routers.
• Produce and maintain technical documentation and SOPs.
• Communicate with government leadership and brief stakeholders.
• Collaborate with IT teams to maintain infrastructure performance and availability.
• Prioritize tasks in a dynamic, high‑pressure environment.
• Provide excellent customer service and brief government leadership.

Skills

IT infra mgmt

Security clearance

TCP/IP basics

Agile concepts

Communication

Education

Bachelor's degree in related discipline

Tools

MS Office Suite

SharePoint

DCO (Defense Connect Online)

Job description

Senior System Administrator

Job Locations

US-CO-Colorado Springs

Overview

LMI is seeking a skilled Senior System Admin at our headquarters office in Colorado Springs CO.

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

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.
• DoD 8140/8570 IAT Level II certification (Security+, CISSP, CCNA, etc.).

Qualifications

• Bachelor's degree in related discipline
• Active Top-Secret clearance with SCI eligibility
• 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.

The target salary range for this position is $150,000-$170,000.

The salary range displayed represents the typical salary range for this position and is not a guarantee of compensation. Individual salaries are determined by various factors including, but not limited to location, internal equity, business considerations, client contract requirements, and candidate qualifications, such as education, experience, skills, and security clearances.

Applicants must meet eligibility requirements for a U.S. Government security clearance. Only US Citizens are eligible for a security clearance. For this position, LMI will only consider applicants with security clearances or applicants who are eligible for security clearances, due to the nature of the work.

Equal Opportunity Employer

LMI is an Equal Opportunity Employer. LMI is committed to the fair treatment of all and to our policy of providing applicants and employees with equal employment opportunities. LMI recruits, hires, trains, and promotes people without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, pregnancy, disability, age, protected veteran status, citizenship status, genetic information, or any other characteristic protected by applicable federal, state, or local law. If you are a person with a disability needing assistance with the application process, please contact [e-mail]

Colorado Residents: In any materials you submit, you may redact or remove age-identifying information such as age, date of birth, or dates of school attendance or graduation. You will not be penalized for redacting or removing this information.