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Systems Administrator - Senior

Job in O'Fallon, St. Clair County, Illinois, 62269, USA
Listing for: CACI
Full Time position
Listed on 2026-01-01
Job specializations:
  • IT/Tech
    Cybersecurity, IT Support
Salary/Wage Range or Industry Benchmark: 90300 - 189600 USD Yearly USD 90300.00 189600.00 YEAR
Job Description & How to Apply Below

Systems Administrator - Senior

Job Category: Information Technology

Time Type: Full time

Minimum Clearance Required to Start: Secret

Employee Type: Regular

Percentage of

Travel Required:

Up to 10%

Type of Travel: Continental US

The Opportunity:

Are you ready to revolutionize financial auditability and transportation logistics? We're seeking experienced Senior Systems Administrators to join our team in implementing a cutting-edge software system that will transform how USTRANSCOM manages finances and supply chains.

If you're passionate about leveraging technology to streamline operations and enhance transparency, this is your chance to make a significant impact. Join us in building the future of financial and logistical management.

This position is contingent upon contract award.

Responsibilities:
  • Perform configuration, management, and maintenance of complex enterprise-level systems.
  • Assist in developing and implementing strategies to optimize system operations and resource utilization.
  • Conduct comprehensive system capacity analysis and lead long-term capacity planning initiatives.
  • Provide expert-level assistance to users in accessing and utilizing business systems.
  • Design and implement robust system security measures and ensure compliance with IT policies and regulations; troubleshoot critical system issues and develop innovative solutions.
  • Create and maintain comprehensive system documentation and standard operating procedures.
  • Mentor junior and intermediate team members, fostering their professional growth.
  • Collaborate with other IT teams and stakeholders on strategic projects and initiatives.
  • Qualifications:

    Required:

    • Bachelor's degree in Computer Science, Information Technology, or a related field.
    • 8-11 years of extensive experience in system administration (equivalent combination of education and experience may be considered in lieu of degree).
    • Secret security clearance, or US citizen with ability to pass T-1 background investigation upon hire.
    • Expert knowledge of various operating systems (e.g., Windows Server, Linux, Unix).
    • Advanced expertise in network protocols, services, and infrastructure.
    • Proven experience with virtualization technologies and cloud platforms.
    • Strong proficiency in scripting and automation (e.g., Power Shell, Python, Bash).
    • Excellent problem-solving skills and ability to manage multiple high-priority tasks.
    • Strong leadership and communication skills.
    • Experience with IT service management frameworks (e.g., ITIL).

    Desired:

    • Master’s degree in relevant field of study.
    • Secret security clearance.
    • Advanced IT certifications (e.g., CISSP, CISM, VMware VCDX).
    • Experience with emerging technologies (e.g., containerization, serverless computing).
    • Knowledge of Dev Ops practices and tools.
    • Familiarity with federal IT regulations and compliance requirements.
    What You Can Expect:

    A culture of integrity. At CACI, we place character and innovation at the center of everything we do. As a valued team member, you’ll be part of a high-performing group dedicated to our customer’s missions and driven by a higher purpose – to ensure the safety of our nation.

    An environment of trust. CACI values the unique contributions that every employee brings to our company and our customers - every day. You’ll have the autonomy to take the time you need through a flexible time off benefit and access to robust learning resources to make your ambitions a reality.

    A focus on continuous growth. Together, we will advance our nation's most critical missions, build on our lengthy track record of business success, and find opportunities to break new ground — in your career and in our legacy.

    Your potential is limitless. So is ours.

    Learn more about CACI here.

    Pay Range

    The proposed salary range for this position is: $90,300 - $189,600. Factors influencing final salary include geographic location, relevant experience, education, certifications, and contract specifics. We offer comprehensive benefits including healthcare, wellness, financial, retirement, family support, continuing education, and time off benefits.

    This position can be worked in more than one location; the range shown is the national average for the position.

    We are an Equal Opportunity Employer. All qualified applicants will receive consideration without regard to race, color, religion, sex, pregnancy, sexual orientation, age, national origin, disability, veteran status, or any other protected characteristic.

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    Position Requirements
    10+ Years work experience
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