Top 119 It technician Jobs in O'fallon, Il

Defense Red Switch Network (DRSN) Support Technician III
Leidos —Scott AFB, IL
- $48,100 - $86,950 a year
- Full-time
- Microsoft Outlook
- High school diploma or GED
- Analysis skills
6d
Jr. Helpdesk Technician
Persistent Technology, Inc. —Scott AFB, IL
- Full-time
- HIPAA
- Mid-level
- Microsoft Office
Quick Apply
IT Help Desk Technician
Truck Centers, Inc. —Troy, IL
- $20.42 - $30.64 a day
- Full-time
- Background check
- Pass drug screening
- Mid-level
- Wellness program
- Health savings account
Quick Apply
4d
IT Technician (Inventory Support)
Missouri Eastern District Court —St. Louis, MO
- $45,835 - $90,608 a year
- Computer science
- Computer Science
- Word processing
- Free parking
- Commuter assistance
9d
IT Support Analyst
Hollywood Casino St. Louis —St. Louis, MO
- From $50,000 a year
- Full-time
- Bachelor of Science
- Basic math
- Mid-level
- Health insurance
- Paid time off
6d
IT Associate I - Service Desk
Stifel —St. Louis, MO
- Full-time
- Microsoft Outlook
- High school diploma or GED
- In-person
- Health insurance
- Dental insurance
IT Support Associate II, Ops Tech Solutions (OTS)
Amazon.com Services LLC —Edwardsville, IL
- Full-time
- Mid-level
- Windows
- Paid parental leave
- Health insurance
Desktop Support Specialist
Brown & Crouppen Law Firm —St. Louis, MO
- Computer science
- Computer Science
- Mid-level
- Wellness program
- Paid holidays
Quick Apply
1d
Technical Support Level 1
ArchTech, LLC —East Saint Louis, IL
- $36,000 - $48,000 a year
- Full-time
- Hybrid work
- Background check
- Windows
- High school diploma or GED
- Health insurance
- Dental insurance
Quick Apply
Technical Support Level 2
ArchTech, LLC —East Saint Louis, IL
- $52,000 - $72,000 a year
- Full-time
- Background check
- Mid-level
- Windows
- Health insurance
- Dental insurance
Quick Apply
IT Help Desk Analyst
Hogan Transportation —St. Louis, MO
- On call
- Word processing
- Research
- Mid-level
- Health insurance
- Dental insurance
JD Edwards Support Tech
Stellar IT Solutions LLC —St. Louis, MO
- $40 - $45 an hour
- Day shift
- Remote
- Mid-level
- SQL
- Communication skills
Quick Apply
Help Desk Technician I
Sunstar Insurance Group LLC —St. Louis, MO
- Remote
- Microsoft Outlook
- Windows
- Organizational skills
Quick Apply
8d
Clinical Service Help Desk Analyst - Remote
NTT Ltd —St. Louis, MO
- $37,944 - $62,000 a year
- Overtime
- Computer literacy
- English
- Mid-level
- Health savings account
- AD&D insurance
6d
IT Service Desk Analyst
Design Group —St. Louis, MO
- Full-time
- Background check
- 5 years
- Pass drug screening
Computer User Support Specialist
SAIC —Scott AFB, IL
- $40,001 - $80,000 a year
- Full-time
- Research
- Mid-level
- Office
Help Desk Technician
Midwest BankCentre —St. Louis, MO
- Full-time
- Mid-level
- Windows
- High school diploma or GED
Desktop Technician II
Bi-State Development Agency —St. Louis, MO
- $46,800 - $58,500 a year
- Full-time
- Computer science
- Computer Science
- Mid-level
- Wellness program
- Paid holidays
IT Consultant
Network Right —St. Louis, MO
- $65,000 - $72,000 a year
- Full-time
- Hybrid work
- School experience
- Google Workspace
- HIPAA
- Paid parental leave
- Health savings account
Quick Apply
6d
IT Support Analyst
Belcan —Wood River, IL
- $23 - $24 an hour
- Contract
- Computer science
- Clean driving record
- Computer Science
Quick Apply
6d

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it technician jobs near o'fallon, il

Defense Red Switch Network (DRSN) Support Technician III

Leidos -
Scott AFB, IL

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Job Details

Full-time
$48,100 - $86,950 a year
6 days ago

Qualifications

Customer communication
High school diploma or GED
DoD 8570
IP networking
IAT
IAT Level II

Full Job Description

Description

Our customer is the Defense Information Systems Agency (DISA) and acts as the provider of GIG/Defense Information System Network (DISN) services to its customers, the department of Defense (DoD) and national security organizations. This position directly supports the DISA-provided GIG capabilities and services in the 24x7 DISA Global Operations Center (DGOC). Shift work to include nights and weekend duty is required. Position may include extended periods of sitting while on a computer or phone and speaking with customers.

The Leidos Digital Modernization Sector and DoD Enterprise and Cyber Operations (DECO) have an opening in our Defense Red Switch Network (DRSN) Support Technician III at Scott AFB, IL.

Our anticipated salary range for this role is $65,000 - $75,000*

This position requires U.S. citizenship with an active Top Secret clearance.

Job Responsibilities: Responsible for performing, training team and developing processes for the following duties:

Create/update/resolve unclear problems and issues faced, utilizing a broad knowledge of the network architect, utilizing the Service Now platform
Notify necessary points of contacts based on essential or heightened awareness networks, circuits or location incidents
Execute network operations to include configuration and analysis of customer circuits across Time Division Multiplexing (TDM) and Session Initiated Protocol (SIP) trunks.
Work directly with customers, UC stakeholders, and leaders internal and external to the organization across multiple areas to ensure maximum network availability to minimize or eliminate mission and operational impact.
Proactively monitor network alarms across platform specific network management tools.
Support all customers to include providing global situational awareness support.
Verify that service has been restored upon resolution of all customer-initiated tickets
Provide timely situational awareness to leadership and the impacted community within discovery and ticket creation using approved communication methods as outlined
Proactively monitor network alarms across platform specific network management tools.
Record, assess, track, and monitor incident tickets escalated to operational infrastructure.
Utilize incident management applications to document all aspects of reported outages/degradations, isolations, escalations, and resolutions during the lifecycle of a service impacting network incident.
Perform configuration maintenance on route plans, route lists device profiles, calling search spaces, and route partitions.
Utilize incident management applications to document all aspects of reported outages/degradations, isolations, escalations, and resolutions during the lifecycle of a service impacting network incident.
Assess, identify and recommend resolutions to various network incidents and/or configuration deficiencies
Develop and/or recommend solutions and processes pertaining to UC and DRSN operations.

Minimum Qualifications:

Hold DoD-8570 IAT Level 2 baseline certification (Security+ CE or equivalent) prior to start date.
Able to work in a 24x7 shift work environment.
Must have an active DoD Top Secret security clearance.
Requires general understanding of both voice infrastructure and IP network topologies.

Desired Qualifications:

Tech control facility or cyber transport experience
Circuit actions experience
Experience with MS Office suite, i.e. Outlook, Excel, Word, Access, PowerPoint, TEAMs.
Experience with one or more of the following: alarm surveillance, call routing, session initiated protocol, media call flow, packet capture analysis, Juniper IP technologies
Knowledge in one or more of following: routers, switches, crypto devices, CISCO, Juniper, video teleconferencing (VTC), voice services, EVoIP/ECVoIP, VoSIP, fly-away kits, Defense Red Switch Network (DRSN), DSN Core.

Required Education & Experience:

Typically requires high school diploma or equivalent and 2 – 4 years of prior relevant experience.

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:

August 14, 2026

For 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 $48,100.00 - $86,950.00

The 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.

About Leidos

Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $16.7 billion for the fiscal year ended January 3, 2025. For more information, visit www.Leidos.com.

Pay and Benefits

Pay and benefits are fundamental to any career decision. That's why we craft compensation packages that reflect the importance of the work we do for our customers. Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available at www.leidos.com/careers/pay-benefits.

Securing Your Data

Beware of fake employment opportunities using Leidos’ name. Leidos will never ask you to provide payment-related information during any part of the employment application process (i.e., ask you for money), nor will Leidos ever advance money as part of the hiring process (i.e., send you a check or money order before doing any work). Further, Leidos will only communicate with you through emails that are generated by the Leidos.com automated system – never from free commercial services (e.g., Gmail, Yahoo, Hotmail) or via WhatsApp, Telegram, etc. If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at [email protected].

If you believe you are the victim of a scam, contact your local law enforcement and report the incident to the U.S. Federal Trade Commission.

Commitment to Non-Discrimination

All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.

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Refine Your Search

it technician jobs in o'fallon, il

Defense Red Switch Network (DRSN) Support Technician III

Jr. Helpdesk Technician

IT Help Desk Technician

IT Technician (Inventory Support)

IT Support Analyst

IT Associate I - Service Desk

IT Support Associate II, Ops Tech Solutions (OTS)

Desktop Support Specialist

Technical Support Level 1

Technical Support Level 2

IT Help Desk Analyst

JD Edwards Support Tech

Help Desk Technician I

Clinical Service Help Desk Analyst - Remote

IT Service Desk Analyst

Computer User Support Specialist

Help Desk Technician

Desktop Technician II

IT Consultant

IT Support Analyst

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