We use cookies. Find out more about it here. By continuing to browse this site you are agreeing to our use of cookies.
#alert
Back to search results
New

Senior Client Systems Administrator

Modern Technology Solutions, Inc.
401(k)
United States, Nevada, Nellis Air Force Base
Feb 21, 2026
MTSI is seeking a proactive and skilled Senior Client Systems Administrator to join our IT team. This role is responsible for the comprehensive support, troubleshooting, and maintenance of our organization's computer systems, servers, and networks to ensure optimal and reliable operation.The administrator will be responsible for installing and configuring software, managing hardware, maintaining network file systems, performing regular security monitoring, and providing high-quality technical support to end-users.
The ideal candidate will manage user accounts and permissions, develop and implement backup and disaster recovery plans, and ensure all IT infrastructure adheres to organizational policies and security standards.This position requires a blend of technical expertise, problem-solving abilities, and strong communication skills to support a dynamic and technology-driven environment
Responsibilities:
  • Manages the installation, configuration, and maintenance of all client-side hardware and software, ensuring systems are up-to-date and operating efficiently to support business needs.
  • Provides expert technical support and troubleshooting for end-users, effectively resolving system, network, and application issues to minimize downtime and maintain productivity.
  • Administers user accounts, system permissions, and network security protocols, conducting regular audits to ensure the integrity and confidentiality of company data.
  • Develops and maintains system backup procedures and disaster recovery plans to safeguard critical data and ensure business continuity in the event of system failure.
Qualifications:
Education & Experience:
  • 4+ years of experience with a bachelors' degree or 6+ years of experience with an associate's degree
Certifications:
  • Required: CompTIA Security+ and Network+
  • Highly Desired: Microsoft Certified Systems Administrator (MCSA), Certified Information Systems Security Professional (CISSP), or other relevant certifications.
Security Clearance:
  • Active TS/SCI clearance with SAP eligibility is required to support mission-critical operations.
Travel Requirements
  • Up to twice per quarter (CONUS, HI, and AK locations possible).
Please Note: U.S. Citizenship is required for this position, due to contract requirements.
#LI-MS1
#MTSIjobs
#mtsi
#onsite





  • Interesting Work:



    Our co-workers support some of the most important and critical programs to our national defense and security.






  • Values:



    Our first core value is that employees come first. We challenge our co-workers to provide the highest level of support and service, and reward them with some of the best benefits in the industry.






  • 100% Employee Owned:



    We have a stake in each other's success, and the success of our customers. It's also nice to know what's going on across the company; we have company wide town-hall meetings three times a year.






  • Great Benefits - Most Full-Time Staff Are Eligible for:





    • Starting PTO accrual of 20 days PTO/year + 10 holidays/year


    • Flexible schedules


    • 6% 401k match with immediate vesting up to $9k annually


    • Semi-annual bonus eligibility (July and December)


    • Company funded Employee Stock Ownership Plan (ESOP) - a separate qualified retirement account


    • Up to $10,000 in annual educational reimbursement


    • Other company funded benefits, like life and disability insurance


    • Optional zero deductible Blue Cross/Blue Shield health insurance plan







  • Track Record of Success:



    We have grown every year since our founding in 1993.




Modern Technology Solutions, Inc. (MTSI) is a 100% employee-owned engineering services and solutions company that provides high-demand technical expertise in Digital Transformation, Modeling and Simulation, Rapid Capability Development, Test and Evaluation, Artificial Intelligence, Autonomy, Cybersecurity and Mission Assurance

MTSI delivers capabilities to solve problems of global importance. Founded in 1993, MTSI today has employees at over 20 offices and field sites worldwide.

For more information about MTSI, please visit www.mtsi-va.com

MTSI embraces nine core values including our first core value of Employees come first. Consistent with our Core Values, we are committed to Equal Opportunity, making decisions without regard to race, color, religion, sex, national origin, age, military/veteran status, disability, or any other characteristics protected by applicable law. MTSI is committed to Equal Employment Opportunity and providing reasonable accommodations to applicants and employees with physical and/or mental disabilities.


Applied = 0

(web-54bd5f4dd9-lsfmg)