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Network Connectivity Engineer Jobs in Illinois (NOW HIRING)

SAIC

IL · On-site

$80K - $120K/yr

Support secure and non-secure wireless communication infrastructure, network connectivity, and ... BA/BS and 4+ years of experience in network engineering or infrastructure operations. * Active DoD ...

Ci

Senior Network Engineer

Chicago, IL

$95K - $140K/yr

Manage firewall policies, VLANs, routing and switching, wireless configurations, VPN connectivity ... As a member of the Infrastructure Engineering team, the Network Engineer also participates in the ...

J&J Ventures

Network Engineer

Effingham, IL · On-site

Job Summary The mission of the Network Engineer is to design, implement, and maintain a robust ... Monitor network performance, troubleshoot connectivity issues, and optimize traffic flow.

Buckeye Mountain

Field Network Engineer

Chicago, IL

Troubleshoot on-site network and connectivity issues; escalate to Cody Jones for remote engineering support * Configure and validate enterprise wireless access points and RF systems Documentation ...

PulseRise Technologies

$107K - $146K/yr

This is a hands-on engineering role with opportunities to influence architecture, drive ... VPN connectivity Hybrid networking Cloud routing Security integration Wireless & User Experience ...

Littelfuse

Sr. Network Engineer

Chicago, IL · On-site

$107K - $146K/yr

We are looking for an experienced Senior Network Engineer to join our Global Infrastructure team ... Design and troubleshoot hybrid connectivity (VPN, ExpressRoute, cloud gateways) * Support global ...

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Network Connectivity Engineer information

What are some common challenges faced by network connectivity engineers when supporting large-scale enterprise networks?

Network Connectivity Engineers working with large-scale enterprise networks often face challenges such as troubleshooting complex connectivity issues across multiple sites, managing network performance during high traffic periods, and ensuring seamless integration of new technologies without disrupting existing services. They must also stay vigilant about network security threats while coordinating with cross-functional teams like cybersecurity and systems administration. Effective communication and a proactive approach to monitoring are essential for success in this dynamic environment.

What is the difference between Network Connectivity Engineer vs Network Support Specialist?

AspectNetwork Connectivity EngineerNetwork Support Specialist
CertificationsCCNA, CompTIA Network+CCNA, CompTIA Network+
Work EnvironmentDesigning, implementing, troubleshooting network infrastructureProviding technical support, troubleshooting network issues
Employer & IndustryTelecom, IT services, large enterprisesIT support firms, corporate IT departments

The Network Connectivity Engineer focuses on designing and maintaining network infrastructure, while the Network Support Specialist primarily provides technical support and troubleshooting. Both roles require similar certifications and often work in related environments, but their core responsibilities differ in scope and focus.

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

To thrive as a Network Connectivity Engineer, you need a solid understanding of networking protocols, infrastructure design, troubleshooting, and a relevant degree or certifications such as Cisco CCNA/CCNP. Familiarity with network management tools, firewalls, routers, switches, and monitoring systems is typically required. Strong problem-solving abilities, attention to detail, and effective communication skills help distinguish top performers in this field. These competencies are crucial to ensure reliable, secure, and efficient network operations within an organization.

What does a network connectivity engineer do?

A Network Connectivity Engineer is responsible for designing, implementing, and maintaining the networking infrastructure that enables computers and devices to communicate within an organization or with external networks. Their duties often include configuring routers, switches, and firewalls, troubleshooting connectivity issues, and ensuring network security and performance. They play a critical role in keeping data flowing smoothly and securely between users, applications, and systems, often collaborating with IT teams to support business operations.
What are popular job titles related to Network Connectivity Engineer jobs in Illinois? For Network Connectivity Engineer jobs in Illinois, the most frequently searched job titles are:
What job categories do people searching Network Connectivity Engineer jobs in Illinois look for? The top searched job categories for Network Connectivity Engineer jobs in Illinois are:
What cities in Illinois are hiring for Network Connectivity Engineer jobs? Cities in Illinois with the most Network Connectivity Engineer job openings:
Network Connectivity Engineer jobs near you
Infographic showing various Network Connectivity Engineer job openings in Illinois as of August 2026, with employment types broken down into 83% Full Time, and 17% Contract. Highlights an 100% In-person job distribution.

Senior Network Infrastructure Specialist

Science Applications International Corporation

Scott Air Force Base, IL • On-site

Other

Re-posted 17 days ago

SAIC rating

7.9

Company rating: 7.9 out of 10

Based on 79 frontline employees who took The Breakroom Quiz

78th of 223 rated it services

Job description

SAIC is seeking a Senior Network Infrastructure Specialist to support highvisibility and missioncritical network operations for the U.S. Transportation Command (USTRANSCOM). This role supports enterpriselevel infrastructure within a global DoD environment and requires independent technical leadership, infrastructure design expertise, and oversight of junior staff.
The successful candidate will operate with minimal supervision, lead complex tasks, and ensure secure, reliable, and resilient network operations across multiple transport mediums and global WAN environments.

Key Responsibilities:
 

  • Develop strategies and design network infrastructure to meet organizational and mission objectives.
  • Advise leadership on technology purchases involving data storage, processing, network access, and application development.
  • Assess feasibility of future projects and provide expert recommendations.
  • Provide deep technical expertise in routing protocols (OSPF, BGP), IPv6, VPN technologies, and global WAN backbone operations.
  • Support secure and nonsecure wireless communication infrastructure, network connectivity, and associated services.
  • Coordinate and execute cryptographic circuit maintenance.
  • Install and maintain the network transport medium (fiber, copper, wireless), including user access drops.
  • Perform planned upgrades and maintenance while minimizing operational disruption.
  • Provide DNS and SMTP support, IP address management, and VLAN configuration.
  • Collect, analyze, and report network availability metrics on a recurring and adhoc basis.
  • Maintain comprehensive technical documentation including, physical and logical network architecture diagrams, equipment room layouts with rack elevations Inside/outside plant specifications, & hardware configurations.
  • Respond to network incidents, provide afteraction reporting, and support service recovery.
  • Adhere to established processes to ensure compliance with service level agreements.
SAIC is a premier mission integrator focused on advancing the power of technology and innovation to serve and protect our world. Our robust portfolio of offerings across the defense, space, intelligence, and civilian markets includes secure high-end solutions in mission IT, enterprise IT, engineering services, and professional services. We integrate emerging technology, rapidly and securely, into mission critical operations that modernize and enable critical national imperatives.

We are approximately 23,000 strong; driven by mission, united by purpose, and inspired by opportunities. SAIC is an Equal Opportunity Employer. Headquartered in Reston, Virginia, SAIC has annual revenues of approximately $7.3 billion. For more information, visit saic.com. For ongoing news, please visit our newsroom.

Required Qualifications:

  • BA/BS and 4+ years of experience in network engineering or infrastructure operations.
  • Active DoD Secret clearance with ability to obtain TS/SCI.
  • IAT Level II certification, such as: Security+, CCNASecurity, CySA+, GICSP, GSEC, CND, or SSCP.
  • At least one Computing Environment certification (Cisco, Splunk, McAfee, etc.).
  • Experience installing and maintaining DoD networks in compliance with security requirements.
  • Strong expertise in routing protocols (OSPF, BGP), IPv6, VPN, and global WAN environments.
  • Proficiency with Microsoft Office tools including Word, PowerPoint, Visio, and Excel.
  • Demonstrated experience producing accurate and comprehensive technical documentation.
  • Strong communication skills for interacting with personnel of varying technical backgrounds.

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