Systems Administrator
Saint Louis, MO · On-site
As a Systems Administrator you will help ensure today is safe and tomorrow is smarter. Our work depends on TS/SCI cleared Systems Administrator joining our team to Support our intelligence customer ...
Saint Louis, MO · On-site
As a Systems Administrator you will help ensure today is safe and tomorrow is smarter. Our work depends on TS/SCI cleared Systems Administrator joining our team to Support our intelligence customer ...
Saint Louis, MO · On-site
As a Systems Administrator you will help ensure today is safe and tomorrow is smarter. Our work depends on TS/SCI cleared Systems Administrator joining our team to Support our intelligence customer ...
Saint Louis, MO · On-site
As a Systems Administrator you will help ensure today is safe and tomorrow is smarter. Our work depends on TS/SCI cleared Systems Administrator joining our team to Support our intelligence customer ...
Saint Louis, MO · On-site
As a Systems Administrator you will help ensure today is safe and tomorrow is smarter. Our work depends on TS/SCI cleared Systems Administrator joining our team to Support our intelligence customer ...
Saint Louis, MO · On-site
The Systems Administrator II is responsible for maintaining the DataServ Software-as-a-Service (SaaS) solutions on the Amazon Web Services (AWS) platform, providing Tier 3 infrastructure and ...
Saint Louis, MO · On-site
The Systems Administrator II is responsible for maintaining the DataServ Software-as-a-Service (SaaS) solutions on the Amazon Web Services (AWS) platform, providing Tier 3 infrastructure and ...
Saint Louis, MO · On-site
The Systems Administrator II is responsible for maintaining the DataServ Software-as-a-Service (SaaS) solutions on the Amazon Web Services (AWS) platform, providing Tier 3 infrastructure and ...
Quick apply
Saint Louis, MO · On-site
The Systems Administrator II is responsible for maintaining the DataServ Software-as-a-Service (SaaS) solutions on the Amazon Web Services (AWS) platform, providing Tier 3 infrastructure and ...
Saint Louis, MO · On-site
JOB TITLE Systems Administrator LOCATION St. Louis, Missouri (Hybrid) HYBRID POLICY 70% On-Site 30% Work-from-Home JOB SUMMARY The Systems Administrator plays a critical role in maintaining and ...
Saint Louis, MO · On-site
JOB TITLE Systems Administrator LOCATION St. Louis, Missouri (Hybrid) HYBRID POLICY 70% On-Site 30% Work-from-Home JOB SUMMARY The Systems Administrator plays a critical role in maintaining and ...
Saint Louis, MO · On-site
$130 - $140K/hr
The Systems Administrator (SA) will work as part of an elite and agile team responsible for maintaining and improving system functionality through proactive interaction with the customer ...
Saint Louis, MO · On-site
$130 - $140K/hr
The Systems Administrator (SA) will work as part of an elite and agile team responsible for maintaining and improving system functionality through proactive interaction with the customer ...
Responsibilities As a Systems Administrator , you will provide administration, operation, maintenance, and security support for information systems supporting the Print and Media Distribution ...
Responsibilities As a Systems Administrator , you will provide administration, operation, maintenance, and security support for information systems supporting the Print and Media Distribution ...
Saint Louis, MO · On-site
Responsibilities As a Systems Administrator , you will provide administration, operation, maintenance, and security support for information systems supporting the Print and Media Distribution ...
Saint Louis, MO · On-site
Responsibilities As a Systems Administrator , you will provide administration, operation, maintenance, and security support for information systems supporting the Print and Media Distribution ...
Saint Louis, MO · On-site
Responsibilities As a Systems Administrator , you will provide administration, operation, maintenance, and security support for information systems supporting the Print and Media Distribution ...
Saint Louis, MO · On-site
Responsibilities As a Systems Administrator , you will provide administration, operation, maintenance, and security support for information systems supporting the Print and Media Distribution ...
Saint Louis, MO · On-site
$130 - $140K/hr
The Systems Administrator (SA) will work as part of an elite and agile team responsible for maintaining and improving system functionality through proactive interaction with the customer ...
Saint Louis, MO · On-site
$130 - $140K/hr
The Systems Administrator (SA) will work as part of an elite and agile team responsible for maintaining and improving system functionality through proactive interaction with the customer ...
Saint Louis, MO · Hybrid
We are seeking an IT Engineer with Microsoft Enterprise Systems Administrator Advisor experience to join our team in support of a Federal Intelligence Agency contract. In addition to receiving a ...
Saint Louis, MO · Hybrid
We are seeking an IT Engineer with Microsoft Enterprise Systems Administrator Advisor experience to join our team in support of a Federal Intelligence Agency contract. In addition to receiving a ...
Paid time off Systems Administrator (SaaS) Location: On-site (Customer Location) The Systems Administrator works as part of an elite, agile team responsible for maintaining, automating, and ...
New
Quick apply
Paid time off Systems Administrator (SaaS) Location: On-site (Customer Location) The Systems Administrator works as part of an elite, agile team responsible for maintaining, automating, and ...
New
Saint Louis, MO · On-site
We are seeking an IT Engineer with Microsoft Enterprise Systems Administrator Advisor experience to join our team in support of a Federal Intelligence Agency contract. In addition to receiving a ...
Saint Louis, MO · On-site
We are seeking an IT Engineer with Microsoft Enterprise Systems Administrator Advisor experience to join our team in support of a Federal Intelligence Agency contract. In addition to receiving a ...
Saint Louis, MO · On-site
We are seeking an IT Engineer with Microsoft Enterprise Systems Administrator Advisor experience to join our team in support of a Federal Intelligence Agency contract. In addition to receiving a ...
Saint Louis, MO · On-site
We are seeking an IT Engineer with Microsoft Enterprise Systems Administrator Advisor experience to join our team in support of a Federal Intelligence Agency contract. In addition to receiving a ...
Saint Louis, MO · On-site
$70K - $85K/yr
Business Systems Administrator Bloomington, IL or St. Louis, MO RoomReady is looking to add a Business Systems Administrator to our IT team. This role is responsible for supporting and administering ...
Saint Louis, MO · On-site
$70K - $85K/yr
Business Systems Administrator Bloomington, IL or St. Louis, MO RoomReady is looking to add a Business Systems Administrator to our IT team. This role is responsible for supporting and administering ...
$70K - $85K/yr
Business Systems Administrator Bloomington, IL or St. Louis, MO RoomReady is looking to add a Business Systems Administrator to our IT team. This role is responsible for supporting and administering ...
$70K - $85K/yr
Business Systems Administrator Bloomington, IL or St. Louis, MO RoomReady is looking to add a Business Systems Administrator to our IT team. This role is responsible for supporting and administering ...
Job Title Systems Administrator / Systems Infrastructure Lead Location Scott Air Force Base, IL 62225 US (Primary) Job Type Full-time Education Bachelor's Degree Career Level Manager Category ...
Job Title Systems Administrator / Systems Infrastructure Lead Location Scott Air Force Base, IL 62225 US (Primary) Job Type Full-time Education Bachelor's Degree Career Level Manager Category ...
Saint Louis, MO · On-site
$80K - $109K/yr
Overview Sr. Systems Administrator St. Louis, MO Are you ready to enhance your skills and build your career in a rapidly evolving business climate? Are you looking for a career where professional ...
Saint Louis, MO · On-site
$80K - $109K/yr
Overview Sr. Systems Administrator St. Louis, MO Are you ready to enhance your skills and build your career in a rapidly evolving business climate? Are you looking for a career where professional ...
Foxhole Technology is seeking a Jr. Systems Administrator who is eager to grow their IT career by supporting enterprise systems within a secure Department of Defense (DoD) environment. This position ...
Foxhole Technology is seeking a Jr. Systems Administrator who is eager to grow their IT career by supporting enterprise systems within a secure Department of Defense (DoD) environment. This position ...
Saint Louis, MO · On-site
$80K - $109K/yr
Overview Sr. Systems Administrator St. Louis, MO Are you ready to enhance your skills and build your career in a rapidly evolving business climate? Are you looking for a career where professional ...
Saint Louis, MO · On-site
$80K - $109K/yr
Overview Sr. Systems Administrator St. Louis, MO Are you ready to enhance your skills and build your career in a rapidly evolving business climate? Are you looking for a career where professional ...
$38.2K - $46.4K
3% of jobs
$46.4K - $54.6K
6% of jobs
$54.6K - $62.8K
11% of jobs
$65.3K is the 25th percentile. Wages below this are outliers.
$62.8K - $71K
16% of jobs
The median wage is $78.6K / yr.
$71K - $79.2K
15% of jobs
$79.2K - $87.3K
14% of jobs
$94.4K is the 75th percentile. Wages above this are outliers.
$87.3K - $95.5K
12% of jobs
$95.5K - $103.7K
9% of jobs
$103.7K - $111.9K
6% of jobs
$111.9K - $120.1K
5% of jobs
$120.1K - $128.3K
3% of jobs
$38.2K
$83K
$128.3K
The primary duties of a system administrator are to install, update, and maintain computer systems while managing user access regimes. As a systems administrator, you have administrative privileges to change settings, install or remove software, and access security functions unavailable to normal users. A systems administrator might oversee multiple machines at once, or even an entire network. You provide technical support to users who are experiencing problems and collaborate with network administrators to ensure the continued performance of the network. As a systems administrator, you determine the level of access a user has to network information and what operations they can perform, limiting users to only what they need to perform their job.
| Aspect | Systems Administrator | Network Administrator |
|---|---|---|
| Certifications | CompTIA Server+, Microsoft Certified: Windows Server Fundamentals | CompTIA Network+, Cisco CCNA |
| Work Environment | Manage servers, operating systems, and enterprise applications | Focus on network infrastructure, routers, switches, and connectivity |
| Employer & Industry Usage | IT departments across various industries, supporting internal systems | Organizations with complex networks, telecom, and internet service providers |
While both roles support IT infrastructure, Systems Administrators primarily manage servers and software systems, whereas Network Administrators focus on network hardware and connectivity. Understanding these differences helps in choosing the right career path or job focus within IT.
The most popular types of Systems Administrator jobs in O'Fallon, IL are:
For Systems Administrator jobs in O'Fallon, IL, the most frequently searched job titles are:
Cities near O'Fallon, IL with the most Systems Administrator job openings:

Saint Louis, MO • On-site
7.8
Based on 63 frontline employees who took The Breakroom Quiz
88th of 226 rated it services
Good employer
Recommended by students
Good training
Uninterrupted breaks
Full-time
Medical, Dental, Vision, Life, Retirement, PTO
Re-posted 8 days ago
Type of Requisition:
RegularClearance Level Must Currently Possess:
Top Secret/SCIClearance Level Must Be Able to Obtain:
Top Secret SCI + PolygraphPublic Trust/Other Required:
NoneJob Family:
IT Infrastructure and OperationsJob Qualifications:
Skills:
Computer Backups, Software Updates, TroubleshootingCertifications:
Security + - CompTIA - CompTIAExperience:
5 + years of related experienceUS Citizenship Required:
YesJob Description:
Transform technology into opportunity as a Systems Administrator with GDIT. A career in enterprise IT means connecting and enhancing the systems that matter most. At GDIT you'll be at the forefront of innovation and play a meaningful part in improving how agencies operate.
At GDIT, people are our differentiator. As a Systems Administrator you will help ensure today is safe and tomorrow is smarter. Our work depends on TS/SCI cleared Systems Administrator joining our team to Support our intelligence customer in St. Louis, MO.
HOW A SYSTEMS ADMINISTRATORWILL MAKE AN IMPACT
As a System Administrator (Desktop Support), you will be responsible for providing excellent technical support to end-users, maintaining desktop systems, and ensuring the reliable operation of computer systems. You will work closely with both on-site and remote users to resolve issues, coordinate upgrades, and provide hands-on support for desktop environments.
In this role, a typical day will include:
WHAT YOU'LL NEED TO SUCCEED:
Education/Experience Requirement:
Certifications:
Location: Customer Site
US Citizenship Required
GDIT IS YOUR PLACE
At GDIT, the mission is our purpose, and our people are at the center of everything we do.
Growth: AI-powered career tool that identifies career steps and learning opportunities
Support: An internal mobility team focused on helping you achieve your career goals
Rewards: Comprehensive benefits and wellness packages, 401K with company match, and competitive pay and paid time off
Community: Award-winning culture of innovation and a military-friendly workplace
OWN YOUR OPPORTUNITY
Explore an enterprise IT career at GDIT and you'll find endless opportunities to grow alongside colleagues who share your desire to drive operations forward.
RoverGSS
The likely salary range for this position is $97,968 - $132,250. This is not, however, a guarantee of compensation or salary. Rather, salary will be set based on experience, geographic location and possibly contractual requirements and could fall outside of this range.Scheduled Weekly Hours:
40Travel Required:
NoneTelecommuting Options:
OnsiteWork Location:
USA MO St. LouisAdditional Work Locations:
Total Rewards at GDIT:
Our benefits package for all US-based employees includes a variety of medical plan options, some with Health Savings Accounts, dental plan options, a vision plan, and a 401(k) plan offering the ability to contribute both pre and post-tax dollars up to the IRS annual limits and receive a company match. To encourage work/life balance, GDIT offers employees full flex work weeks where possible and a variety of paid time off plans, including vacation, sick and personal time, holidays, paid parental, military, bereavement and jury duty leave. To ensure our employees are able to protect their income, other offerings such as short and long-term disability benefits, life, accidental death and dismemberment, personal accident, critical illness and business travel and accident insurance are provided or available. We regularly review our Total Rewards package to ensure our offerings are competitive and reflect what our employees have told us they value most.Our Identity Verification Process:
As part of the hiring process, we will ask you to complete an identity verification process that leverages advanced biometrics and artificial intelligence to ensure authenticity and protect against identity fraud. You are expected to be on camera during virtual interviews. We reserve the right to take your picture to verify your identity and prevent fraud. By proceeding, you authorize the collection, processing, and use of your biometric data for identity verification and security purposes.About Our Work:
We are GDIT. A global technology and professional services company that delivers technology solutions and mission services to every major agency across the U.S. government, defense and intelligence community. Our 26,000 experts extract the power of technology to create immediate value and deliver solutions at the edge of innovation. We operate across 50+ countries worldwide, offering leading mission-ready capabilities in AI, cloud, cyber and software development.Join our Talent Community to stay up to date on our career opportunities and events atgdit.com/tc.
Equal Opportunity Employer / Individuals with Disabilities / Protected VeteransSourced by ZipRecruiter
GDIT is a global technology and professional services company that delivers technology solutions and mission services to every major agency across the U.S. government, defense, and intelligence community. Its 30,000 experts extract the power of technology to create immediate value and deliver solutions at the edge of innovation. The company operates across 50+ countries worldwide, offering leading capabilities in digital modernization, AI/ML, cloud, cyber, and application development.
It services
10,000+ Employees
Falls Church, VA, US
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