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Systems Administrator

Job in Saint Charles, St. Charles County, Missouri, 63301, USA
Listing for: Amentum
Full Time position
Listed on 2026-01-01
Job specializations:
  • IT/Tech
    Systems Administrator, IT Support
Salary/Wage Range or Industry Benchmark: 89441 USD Yearly USD 89441.00 YEAR
Job Description & How to Apply Below

Overview

OBJECTIVE:
Responsible for ensuring the smooth operation, security, and reliability of our organization’s IT operating system environment and infrastructure. This includes managing servers, hardware, and software, as well as providing onsite technical support for other teams and end users.

Essential Duties / Responsibilities
  • Perform daily On Site Datacenter Support
  • Provide Datacenter Hardware Support and Maintenance as required
  • Maintain Datacenter Rack Drawing and documentation as required
  • Perform Monthly Server Patching (Windows Server Update Service)
  • Remediate Server vulnerabilities based on scan results within the required 30 day timeframe
  • Complete daily, weekly, monthly, and yearly Operational Tasks on or ahead of schedule
  • Provide onsite technical assistance and support to other lines of service
  • Provide onsite technical assistance and support to end-users
  • Managing routine morning checks of systems and environment and provide any subsequent remediation
  • Perform Annual reviews of IT infrastructure systems to verify integrity and compliance
  • Participate in IT projects and initiatives
  • Maintain accurate documentation of system configurations, procedures, and troubleshooting guides, along with recording and tracking changes made to the IT infrastructure environment
  • Manage virtual environment using VMware’s vSphere and ESXi
Education, License, Certification, And Experience

Education:

Bachelor’s degree in computer science, engineering, or other scientific or management field. Experience in lieu of education considered.

Experience:

Minimum of 7 years’ experience.

Licenses:
No licensure required.

Certifications:

No professional certifications required.

Required Screenings
  • Drug Screen
  • Physical Assessment (if applicable)
  • Background Check (Criminal, Civil, Educational, Previous Employment, etc.)
  • Driver Record Screen (for positions requiring on-the-job-driving)
Required Skills / Abilities
  • Familiarity with WSUS administration
  • Proficient in Data center monitoring and maintenance
  • Proficient in Server administration
  • Proficient in Help desk tier 2 support
  • Proficient in UPS Device Management and Monitoring
  • Proficient in vSphere administration
  • Proficient in Print server administration
  • Familiarity with Commvault administration (desired)
  • Familiarity with Red Hat Linux administration (desired)
  • Proficient in communications skills, organizational skills and independent and autonomous working
  • Ability to lift 50 lbs
  • Ability to work under pressure to meet deadlines while handling multiple priorities
  • Ability to provide up to date and accurate reporting to management and customers
Physical Requirements

Medium work – frequent squatting, bending, stooping, and kneeling. Occasional work on uneven surfaces. Lifting or exerting up to 50 lbs. of force occasionally, and/or up to 20 lbs. of force frequently, and/or up to 10 lbs. of force constantly.

Supervisory Responsibilities

This position does not require any supervisor responsibilities.

General Information

Core

Hours:

7am – 7pm

Location:

Weldon Spring

Travel:
Less than 5%

Employment-At-Will

Employment is at will, unless prohibited by local and/or state laws.

Compensation & Benefits

HIRING SALARY RANGE: $89,441.09 - $ (Salary to be determined by the education, experience, knowledge, skills, and abilities of the applicant, internal equity, and alignment with market data.)

Benefits:
Medical, dental and vision insurance, 401(k) retirement plan, life insurance, long-term and short-term disability insurance, 15 days of paid time off, and parental leave.

Amentum is proud to be an Equal Opportunity Employer. Our hiring practices provide equal opportunity for employment without regard to race, sex, sexual orientation, pregnancy, age, ancestry, military or veteran status, color, religion, marital or domestic partner status, medical condition, genetic information, national origin, citizenship status, or any other protected category under federal, state, or local law.

Learn more about your rights under Federal laws and labor posters.

Seniorit y level
  • Mid-Senior level
Employment type
  • Full-time
Job function
  • Information Technology
  • Industries
  • Defense and Space Manufacturing

Note:

This refined description retains the essential job information and removes extraneous postings and formatting issues.

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