Senior System Administrator

Amentum; Houston (TX); On-site; USD 110,000 - 150,000; Full time

Benefits offered by this job

Health, dental, and vision insurance

Paid time off and holidays

401(k) matching

Job summary

Amentum is seeking a Senior System Administrator to join the JETSII Contract in the Houston area. The role focuses on Windows administration, VMware VMWare, patching, security, and IT automation within a multi-server environment.

Ideal candidates bring strong AD, networking, firewall, and load-balancing knowledge, plus 10+ years of experience and a Bachelor’s degree or equivalent certification. Onsite work with ONSITE benefits and growth opportunities.

Qualifications

• Requires a bachelor’s degree or equivalent in a related area and typically 10 years of system administration experience.
• Strong problem solving, independent analysis and communication skills.
• Solid understanding of Windows domain architecture, AD, networking and load balancing.

Responsibilities

• Perform daily Windows system administration in a multi-server environment.
• Maintain and tune the VMware virtual environment.
• Oversee patch remediation and software deployment across systems.
• Maintain system security and monitor/report on service levels.
• Provide support for local and shared services (accounts, storage, DR).
• Develop IT automation using Kaseya, PowerShell and other tools.
• Update documentation and configuration control; lead infrastructure improvement projects.

Skills

Windows domain architecture

Active Directory

Networking & security

VMware

Kaseya

PowerShell automation

Education

Bachelor's degree or equivalent certification

Tools

Dell Blade Systems

Dell VRTX/VXRail

VMware

Kaseya

Cisco Networking

Palo Alto / Fortinet Firewall

Job description

Are you passionate about human space exploration, understanding the origins of the universe, and working with a passionate and diverse team to make a difference? If you are, we need you!

We need your talent, teamwork, and energy to help us achieve great things that inspire people all over the globe. We need you to bring creative ideas and diverse backgrounds to help us envision, shape, and deliver systems that will enable the exploration of space while benefiting people here on Earth. We are excited about what we do, and we need you on our team as we take on exciting challenges for NASA’s pursuits in deep space exploration. As NASA’s largest engineering solutions provider working together with NASA at centers across the United States.

We have an exciting opportunity for a Senior System Administrator to join the JETSII Contract.

The Senior System Administrator will:

• Perform daily maintenance and operations tasks related to Windows system administration in a multi-server environment.
• Provide maintenance and performance tuning of the virtual environment utilizing VMware.
• Oversee patch remediation and software deployment.
• Maintain and enhance system security across the environment.
• Monitor systems and produce required reports to maintain documented service levels.
• Provide support for local and shared services (account management, storage arrays, disaster recovery, etc.).
• Develop and maintain IT automation solutions using Kaseya, PowerShell, and other enterprise automation tools.
• Update documentation and maintain configuration control for the environment.
• Manage multiple projects for improvements to the infrastructure as the Technical Lead.
• Perform other duties as required.

Requisition Qualifications:

This position has been posted at multiple levels.Depending on the candidate’s experience, requirements, and business needs, we reserve the right to consider candidates at any level for which this position has been advertised.

• Typically requires a bachelor’s degree or equivalent certification in a related area and normally possess 10 years of experience in the field or in a related area.
• Requires independent analysis, communication and problem solving.
• Candidate should also have a strong background in the understanding of Windows domain architecture, Active Directory, local area networking, switches, firewall, systems/network security and load balancing to perform day to day duties.
• Must have a minimum of 10 years of system administration managing multiple servers.
• Must have prior work experience working in windows administration.
• Candidate should have a firm understanding of networking and firewall principles.
• Candidate should have a firm understanding of File Storage Systems
• Candidate should have a firm understanding of working with Dell Blade systems
• Must have knowledge of Windows Server 2016 and above, VMware
• Must have knowledge with Kaseya and automation

Requisition Preferences:

• BS degree in a computer or systems science discipline from an accredited college or university and a minimum of ten (10) to fourteen (14) years of progressive, relevant experience, or a MS degree in a computer or systems science discipline and seven (7) to twelve (12) years of progressive experience, or Ph.D. degrees in a computer or systems science discipline and two (2) to seven (7) years progressive experience.
• Would prefer someone with experience with the following technologies:
  • Dell VRTX/VXRail Blade Systems
  • Nimble Storage
  • NetApp Storage
  • Dell Storage
  • Cisco Networking
  • Palo Alto or Fortinet Firewall
  • VM Ware
  • Work in multiple Domains
  • Cloud based server administration
  • Kaseya Management
  • Containerization

Why Join Our Team?

In addition to exciting career opportunities, we also have:

• Excellent personal and professional career growth
• 9/80 work schedule (every other Friday off), when applicable
• Onsite cafeteria (breakfast & lunch)
• Much, much more!

For more information on our partnership with NASA at Johnson Space Center (JSC), please visit www.wehavespaceforyou.com

• Proof of U.S. Citizenship or US Permanent Residency may be a requirement for this position.
• Must be able tocomplete a U.S. government background investigation.
• Management has the prerogative to select at any level for which the position is advertised.

Essential Functions

Work Environment

Generally, an office environment, but can involve inside or outside work depending on task.

Physical Requirements

Work may involve sitting or standing for extended periods (90% of time). May require lifting and carrying up to 25 lbs. (5% of time).

Equipment and Machines

Standard office equipment (PC, telephone, printer, etc.).

Attendance

Regular attendance in accordance with established work schedule is critical. Ability to work outside normal schedule and adjust schedule to meet peak periods and surge requirements.

Other Essential Functions

Professional behavior that enhances productivity and promotes teamwork and cooperation. Grooming and dress must be appropriate for the position and must not impose a safety risk/hazard to the employee or others.

#JETS #JETSII

Compensation Details:

IT3-IT4

The compensation range or hourly rate listed for this position is provided as a good-faith estimate of what the company intends to offer for this role at the time this posting was issued. Actual compensation may vary based on factors such as job responsibilities, education, experience, skills, internal equity, market data, applicable collective bargaining agreements, and relevant laws.

Benefits Overview:

Our health and welfare benefits are designed to support you and your priorities. Offerings include:

• Health, dental, and vision insurance
• Paid time off and holidays
• Retirement benefits (including 401(k) matching)
• Educational reimbursement
• Parental leave
• Employee stock purchase plan
• Tax-saving options
• Disability and life insurance
• Pet insurance

Note: Benefits may vary based on employment type, location, and applicable agreements. Positions governed by a Collective Bargaining Agreement (CBA), the McNamara-O’Hara Service Contract Act (SCA), or other employment contracts may include different provisions/benefits.

Original Posting:

08/14/2026 - Until Filled

Amentum anticipates this job requisition will remain open for at least three days, with a closing date no earlier than three days after the original posting. This timeline may change based on business needs.

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 (including pregnancy, childbirth, breastfeeding, or medical conditions related to pregnancy, childbirth, or breastfeeding), age, ancestry, United States military or veteran status, color, religion, creed, marital or domestic partner status, medical condition, genetic information, national origin, citizenship status, low-income status, or mental or physical disability so long as the essential functions of the job can be performed with or without reasonable accommodation, or any other protected category under federal, state, or local law. Learn more about your rights under Federal laws and supplemental language at Labor Laws Posters.