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Network Engineer Jobs in Belleville, IL (NOW HIRING)

Leidos

Network Engineer

Shiloh, IL · On-site

$59K - $106K/yr

Hiring for Network Engineer I, Network Engineer II, and Network Engineer III POSITION SUMMARY: Our customer, Defense Information Systems Agency (DISA), acts as the provider of GIG/Defense Information ...

New

Business Integra

Network Engineer

Saint Louis, MO · On-site

The Network Engineer provides design, implementation, and support for hardware and software with a primary focus on Wireless network implementation. Knowledge of LAN switches, PoE and wireless ...

Abacus Technology

Network Engineer

Belleville, IL

Abacus Technology is seeking a Network Engineer to provide infrastructure support of data networks for an enterprise program at Scott AFB. This is a full-time position. * Provide network analysis and ...

Talentporte

Network Engineer

Edwardsville, IL

$45 - $50/hr

Network Engineer Position: Contract (12 months) conversion or other projects unknown after assignment. Location: Edwardsville, IL. Pay: $45.00 to $50.00 an hour (depending on experience). Hours: 7:30 ...

Abacus Technology

Network Engineer

Belleville, IL · On-site

Overview Abacus Technology is seeking a Network Engineer to provide infrastructure support of data networks for an enterprise program at Scott AFB. This is a full-time position. Responsibilities

C3EL

Network Engineer

Scott Air Force Base, IL

Network Engineer Security Clearance: Top Secret Location : Scott AFB, IL (Due to the nature of the work and contract requirements, U.S. Citizenship is required. ) Description: C3EL is seeking a ...

C3EL

Network Engineer

Scott Air Force Base, IL

Network Engineer Security Clearance: Top Secret Location : Scott AFB, IL (Due to the nature of the work and contract requirements, U.S. Citizenship is required. ) Description: C3EL is seeking a ...

Abacus Technology

Network Engineer

Belleville, IL · On-site

Overview Abacus Technology is seeking a Network Engineer to provide infrastructure support of data networks for an enterprise program at Scott AFB. This is a full-time position. Responsibilities

caleres

Network Engineer

Saint Louis, MO

Join our dynamic and thriving footwear company as a Network Engineer in St. Louis, MO where you'll have the opportunity to make an impact and shape the future of our renowned brands. If you have a ...

Caleres

Network Engineer

Clayton, MO · On-site

Join our dynamic and thriving footwear company as a Network Engineer in St. Louis, MO where you'll have the opportunity to make an impact and shape the future of our renowned brands. If you have a ...

GCyber

Senior Network Engineer

Scott Air Force Base, IL · On-site

$140 - $190/hr

The Senior Network Engineer is responsible for managing and maintaining network availability, security, and performance across multiple sites and classifications. This position is full time onsite at ...

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All JobsNetwork Engineer JobsNetwork Engineer Jobs in Belleville, IL

Network Engineer information

See Belleville, IL salary details

$27.3K

$96.1K

$139.2K

How much do network engineer jobs pay per year?

As of Aug 19, 2026, the average yearly pay for network engineer in Belleville, IL is $96,094.00, according to ZipRecruiter salary data. Most workers in this role earn between $78,400.00 and $117,600.00 per year, depending on experience, location, and employer.

What does a network engineer do?

A Network Engineer is responsible for designing, implementing, and maintaining the computer networks that support in-house voice, data, video, and wireless network services. They ensure network reliability and performance, troubleshoot issues, and optimize network security. Network Engineers work with hardware and software, coordinate with other IT professionals, and often manage upgrades or expansions to meet an organization's needs.

What does a network engineer do?

Network Engineers support and optimize all processes for maintaining a company’s computer network, selecting and deploying software and hardware and making local area networks (LANs) and wide area networks (WANs) accessible, and making sure that company personnel can securely access the internet to complete work. Network Engineers also analyze network performance, configure network features based on client needs, and develop guidelines for acceptable network use.

What are some common challenges network engineers face when managing large-scale enterprise networks?

Network Engineers working with large-scale enterprise networks often encounter challenges such as ensuring network security across multiple locations, minimizing downtime during upgrades or maintenance, and troubleshooting complex connectivity issues. They may also need to balance high availability with performance, manage diverse hardware and software, and coordinate with cross-functional teams like cybersecurity and IT support. Staying updated with rapidly evolving technologies and addressing scalability concerns are key aspects of the role.

What are the key skills and qualifications needed to thrive as a network engineer, and why are they important?

To thrive as a Network Engineer, you need a solid understanding of network protocols, routing and switching, and typically hold a degree in computer science or a related field. Familiarity with tools like Cisco IOS, network monitoring software, and certifications such as CCNA or CCNP are highly valued. Strong problem-solving skills, effective communication, and the ability to work well under pressure set top performers apart. These skills ensure the reliable design, implementation, and maintenance of network infrastructure, which is critical for organizational connectivity and security.

What is the difference between Network Engineer vs Network Administrator?

AspectNetwork EngineerNetwork Administrator
CertificationsCCNA, CCNP, CompTIA Network+CCNA, CompTIA Network+
Work EnvironmentDesigning, implementing, and troubleshooting network infrastructureManaging and maintaining existing network systems
ResponsibilitiesNetwork design, configuration, and optimizationMonitoring, maintaining, and supporting network operations
Industry UsageIT, telecommunications, large enterprisesCorporate, small to medium businesses, educational institutions

While both roles involve working with networks, Network Engineers focus on designing and building network systems, whereas Network Administrators manage and support existing networks. Understanding these differences helps organizations assign the right responsibilities and professionals for their network needs.

Are network engineers still in demand?

Network engineers are still in demand due to ongoing growth in IT infrastructure, cybersecurity needs, and cloud computing. They typically require skills in network design, troubleshooting, and certifications like Cisco CCNA or CompTIA Network+ to stay competitive in the job market.
More about Network Engineer jobs

What are the most commonly searched types of Network Engineer jobs in Belleville, IL?

The most popular types of Network Engineer jobs in Belleville, IL are:

What are popular job titles related to Network Engineer jobs in Belleville, IL?

For Network Engineer jobs in Belleville, IL, the most frequently searched job titles are:

What job categories do people searching Network Engineer jobs in Belleville, IL look for?

The top searched job categories for Network Engineer jobs in Belleville, IL are:

What cities near Belleville, IL are hiring for Network Engineer jobs?

Cities near Belleville, IL with the most Network Engineer job openings:

Network Engineer jobs near you
Infographic showing various Network Engineer job openings in Belleville, IL as of August 2026, with employment types broken down into 1% As Needed, 84% Full Time, 10% Part Time, and 5% Contract. Highlights an 92% Physical, 3% Hybrid, and 5% Remote job distribution, with an average salary of $96,094 per year, or $46.2 per hour.

Network Engineer

Leidos

Shiloh, IL • On-site

$59K - $106K/yr

Full-time

Posted yesterday

New

Leidos rating

8.3

Company rating: 8.3 out of 10

Based on 152 frontline employees who took The Breakroom Quiz

79th of 492 rated business services

Job description

The Digital Sector of Leidos has multiple openings in our Joint Fires Network (JFN) NOC for various levels of experience Network Engineers supporting our Global Solutions Management-Operations II (GSMO-II) program at Scott AFB, IL.

Must have an active DoD Top Secret security clearance.

Hiring for Network Engineer I, Network Engineer II, and Network Engineer III

POSITION SUMMARY:
Our customer, Defense Information Systems Agency (DISA), 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).


PRIMARY RESPONSIBILITIES:

  • Execute network operations to include configuration and analysis of customer circuits across optical and electro-optical multiplexers, routers, and switches.

  • Perform real-time circuit redesign (alternate routing) to restore customer connectivity during scheduled and unscheduled outages and maintenance actions.

  • Work directly with internal and external customers, external government agencies, and other engineering tiers to ensure maximum network availability to minimize or eliminate mission and operational impact.

  • Proactively monitor network alarms across platform specific network management tools.

  • Perform a variety of change management tasks which include hardware replacement, software configurations, and ASI management.

  • 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 deficiencies leveraging knowledge in one or more of following: routers, switches, crypto devices, routing, CISCO, Juniper, MSPP, optical transport network, MPLS, time division multiplexing, SDH/SONET.

BASIC QUALIFICATIONS:

  • Bachelor's degree and 2+ years of prior relevant experience; or equivalent combination of education and/or experience.

  • 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.

  • Working knowledge of both Transport and IP network topologies.

  • Must have an active DoD Top Secret security clearance.

PREFERRED QUALIFICATIONS:

  • Tech control facility or cyber transport experience.

  • Circuit actions and vendor experience.

  • IP/Transport architecture experience.

  • Solarwinds and JIRA experience.

  • Telco NOC, inside or outside plant experience.

  • Experience with MS Office suite, i.e. Outlook, Excel, Word, Access, PowerPoint, TEAMs.

  • Experience with one or more of the following: alarm surveillance, fault management, LAN maintenance, performance management, change management.

GSMO JFN

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 17, 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 $59,150.00 - $106,925.00

The Leidos pay range for this job level is a general guideline onlyand 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.

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About Leidos

Sourced by ZipRecruiter

At Leidos, we deliver innovative solutions through the efforts of our diverse and talented people who are dedicated to our customers' success. We empower our teams, contribute to our communities, and operate sustainable practices. Everything we do is built on a commitment to do the right thing for our customers, our people, and our community.

Industry

It services

Company size

10,000+ Employees

Headquarters location

Reston, VA, US

Social media

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