Senior Administrative Assistant

Modern Technology Solutions

📍 Arlington, Virginia, United States 💼 Full-time 🕒 Posted June 07, 2026

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Job Description

 Own Your Future. 
 Modern Technology Solutions, Inc. (MTSI) is seeking a  Senior Administrative Assistant.  
  Why is MTSI known as a Great Place to Work? 
  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 Ownership:  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/yearFlexible schedules6% 401k match with immediate vestingSemi-annual bo...
            

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Job Details

Location Arlington, Virginia
Job Type Full-time
Category Secretaries and Administrative Assistants
Posted Date June 07, 2026
Application Deadline July 17, 2026