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Jr. System Administrator at Leidos in O'Fallon, IL
Job Description
Jr. System Administrator
Location: O'Fallon, IL
Leidos is seeking a candidate to fill a Junior System Administration position supporting DISA's GSM-O contract at Scott AFB, IL. The System Administrator is responsible for protecting DISA’s information and information systems from unauthorized access, use, disclosure, disruption, modification, perusal, inspection, recording and destruction.
PRIMARY RESPONSIBILITIES:
The candidate must be able to work independently to maintain the smooth operation of a multi-user computer systems, including coordination with customer and other administrators.
Communicate policies and procedures to customers
Update digital systems to provide insight to ongoing efforts and tickets
Monitor alarm systems
Perform basic level system administrator duties.
Interacts with users and evaluates vendor products.
Creates, maintains, and implements detailed documentation and maintains standard operating procedures.
Provides support on a M-F business hours schedule, also responsible for on-call, extended hour, and weekend support as required by mission or emergency situations.
System monitoring using installed tools as well as external tools.
BASIC QUALIFICATIONS:
BA Degree and less than 2 years of experience. Experience may be accepted in lieu of degree.
1 year of experience in customer service environment
Must hold an active SECRET security clearance prior to start.
Complete DoD 8750 certification e.g. Security+ within 6 months of start date.
Basic Understanding of Scripting Languages
PREFERRED QUALIFICATIONS:
Additional training, education, or certification in IT related programs
Experience with a ticketing system
Experience working with virtual environments.
GSMO
If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo — because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 — and moving faster than anyone else dares.
Original Posting:
September 24, 2026For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.
Pay Range:
Pay Range $50,700.00 - $91,650.00The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.