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Network Engineer Jobs in Belleville, IL (NOW HIRING)

GCyber

Senior Network Engineer

Scott Air Force Base, IL · On-site

$100K - $137K/yr

GCyber is hiring a Senior Network Engineer to serve as the program's network design authority for a high-profile Air Force network program supporting a critical mission. The Senior Network Engineer ...

Collabera

Network Engineer

Saint Louis, MO · On-site

Minimum of 3 years experience ideally working in a carrier network or a large enterprise network in a design, engineering, or architecture role Additional Information If you want to know more and ...

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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.

Senior Network Engineer

GCyber

Scott Air Force Base, IL • On-site

$100K - $137K/yr

Full-time

Medical, Dental, Vision, Retirement, PTO

Re-posted 2 days ago

Job description

GCyber is hiring a Senior Network Engineer to serve as the program's network design authority for a high-profile Air Force network program supporting a critical mission. 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 Scott AFB, IL. Given the classified nature of the work and the mission essential designation of this position, there is no opportunity for hybrid or remote work.
 
This position is contingent upon contract award.
As the Senior Network Engineer, you will:
  • Provide network analysis and design services and evaluate and recommend new technologies to meet requirements and improve network performance.
  • Test and document all hardware, software, and configuration changes in the lab before they are made at an operational site, and produce the installation and configuration guides the Government requires before each change.
  • Serve as the Tier 3+ escalation point for network issues at three operational gateway sites and the platforms that connect to them.
  • Engineer and review configurations for routers, switches, firewalls, VLANs, VPNs, CIDR and VLSM schemes, DNS, encryption devices, network management services, and satellite transmissions.
  • Configure fault tolerance and disaster recovery for servers and network devices.
  • Write scripts to configure, monitor, and troubleshoot the network.
Minimum Qualifications and Experience:
  • Active DoD TOP SECRET clearance and enrollment in Continuous Vetting
  • Cisco Certified Network Professional (CCNP)
  • DoD 8140/8570 IAT Level II certification.
  • BA/BS and 8+ years of network engineering experience, including a minimum of 5 years of directly relevant experience. 
  • Expertise in routing, switching, firewall, VPN, VLAN, IPv4/IPv6, and encryption device experience in a production environment.
  • Experience applying DISA STIGs and carrying out USCYBERCOM and DISA tasking orders. 
  • Hands on experience with air-to-ground gateways, airborne communications, SATCOM transport, or TCP acceleration.
Preferred Skills & Experience
  • CCIE or Cisco Certified DevNet Associate.
  • Network automation experience: Python against network APIs, GitLab CI, and EVE-NG or a similar lab emulation tool.
  • Experience supporting aircraft developmental or operational test and evaluation.
  • Experience with SolarWinds and Splunk.

Our Benefits

GCyber is committed to the well-being and development of every employee. Our benefits are designed to support your personal and professional goals, from health and wellness programs to retirement savings and career development opportunities. Highlights include:

  • 26 Days of Paid Leave + Annual PTO Increase
  • An extra day of paid leave for every year of employment with GCyber
  • Paid Parental Leave
  • Additional Leave Allowances for Military Duty, Jury Duty, and Bereavement Leave
  • 401(k) Matching
  • 100% Company-funded Disability Insurance
  • 90% Company-Funded Health, Dental, and Vision Insurance, with contributions to insurance benefits for spouses, children, and family members
  • Training and Professional Development Plans
  • Commuter Benefits Plan
  • Parking and Transportation Allowance

Equal Opportunity Employer

GCyber is an Equal Opportunity Employer. This means you don't have to worry about whether your application process will be fair. We consider all applicants without regard to race, color, religion, age, ancestry, ethnicity, gender, gender identity, gender expression, sexual orientation, veteran status, or disability.

Stay in Touch

For future job notifications please follow GCyber on LinkedIn. https://linkedin.com/company/gcyber

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