Systems Administrator, SME

Cayuse Holdings

. Administer, optimize, and troubleshoot computer systems, including Windows and UNIX systems (Linux or Solaris) .

Posted 9/22/2026full-timeSt. Clair County • Illinois • United StatesJuniorMid-Level💰 $100,000 - $111,000 per yearWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in administering and optimizing Windows and UNIX systems, with a strong focus on system performance, capacity analysis, and automation. Proven ability to manage operational activities and provide end-user support while maintaining compliance with DoD standards.

Highest-signal resume keywords

Windows System AdministrationUNIX System AdministrationDoD 8140-Compliant CertificationsTop-Secret ClearanceCapacity Analysis

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

System OptimizationAutomation DevelopmentSystem TroubleshootingPreventive MaintenanceConfiguration ManagementCapacity AnalysisEnd-User TrainingTechnical Project Support

Soft Skills

Exceptional Interpersonal SkillsVerbal Communication SkillsWritten Communication SkillsOrganizational SkillsProblem-Solving Skills

Tools & Technologies

MS OfficeWordOutlookPowerPointExcel

Certifications & Qualifications

IAT Level II Credentials

Industry Keywords

System PerformanceResource UtilizationOperational ActivitiesTechnical ProjectsEnvironmental Challenges

Tech Stack

Tools & technologies

LinuxUnix

About the role

Key responsibilities & impact

Administer, optimize, and troubleshoot computer systems, including Windows and UNIX systems (Linux or Solaris)
Supervise and manage daily operational activities related to business system configuration and operation
Optimize system performance and resource utilization
Perform detailed capacity analysis to support system scaling and growth
Develop and oversee automation for system installation, upgrades, configuration, administration, and maintenance
Investigate and analyze customer support and sustainment requirements
Recommend methodologies, processes, and technological solutions
Plan and execute preventive maintenance for operating systems, storage systems, virtual infrastructures, and other IT assets
Perform repairs to resolve system-related issues and environmental challenges
Manage systems and environments across multiple concurrent projects
Interface with vendors to troubleshoot, resolve, and escalate system issues
Support planning, assessment, and definition of system and environmental requirements for technical projects
Provide expert-level end-user assistance and training
Report to the Program Manager
Perform other duties as assigned

Requirements

What you’ll need

Bachelor’s Degree with 6–8 years of related experience or Master’s Degree with 2–6 years of experience
Considerable experience in configuring and administering Windows and UNIX systems (Linux or Solaris)
DoD 8140-compliant certifications (e.g., IAT Level II credentials)
Top-Secret Clearance is required
Must be able to pass a background check
Must be able to pass additional background checks as required by projects and/or clients
Exceptional interpersonal skills
Exceptional verbal and written communication skills
Excellent organizational, analytical, and problem-solving skills
Ability to multitask and prioritize in a fast past environment with changing priorities
Adaptable to change and a quick learner
Self-motivated and able to work independently and on a multi-functional team
Ability to handle sensitive and confidential information appropriately
Proficient in MS Office, Word, Outlook, PowerPoint, and Excel
Ability to work onsite in the main office
Ability to use a computer and other office productivity tools with sufficient speed
May require lifting and moving hardware equipment weighing up to 50 pounds
Must be able to sit for long periods of time looking at computer screen
May be asked to work hours outside of normal business hours

Benefits

Comp & perks

Medical, Dental and Vision Insurance
Wellness Program
Flexible Spending Accounts (Healthcare, Dependent Care, Commuter)
Short-Term and Long-Term Disability options
Basic Life and AD&D Insurance (Company Provided)
Voluntary Life and AD&D options
401(k) Retirement Savings Plan with matching after one year
Paid Time Off
May be asked to travel for business or professional development purposes
May be asked to work a flexible schedule which may include holidays