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Sr Network Design Engineer Jobs in Illinois (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 ...

Comcast

Sr. Network Engineer 4, Design & Architecture

IL · On-site

$102K - $153K/yr

Job Summary The Sr. Network Engineer 4, Design & Architecture, supports the design of custom enterprise network solutions for our Comcast Business customers as well as troubleshooting, installing ...

Fermilab

Senior Network Analyst

Batavia, IL · On-site

$99K - $130K/yr

Fermilab is looking for a Senior Network Analyst to plan, design, contribute and deploy new network ... programming, and design techniques. Work Arrangement: Please note that the described work ...

Early Warning Services

Sr. Network Engineer

Chicago, IL · Hybrid

$107K - $146K/yr

The Senior Network Engineer designs, builds, implements, automates, and supports complex network ... Leads technical design and implementation for medium to large network initiatives, including ...

IS3 Solutions

Sr. Network QA Engineer

Edwardsville, IL · On-site

$97K - $133K/yr

... design, software defined wide area networking, and security policy management. • Proven ... senior engineer or architect level. • Experience in a systems integrator, managed services, or ...

Leidos

Senior Network Software Engineer

Shiloh, IL · On-site

$96K - $132K/yr

The Senior Network Software Engineer will support the development and release of new software tools ... Design, develop, document, test and release software written in Python, XML, and other languages ...

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Sr Network Design Engineer information

What is a Sr Network Design Engineer?

Sr Network Design Engineers are senior-level professionals responsible for designing, planning, and implementing complex network infrastructures for organizations. They analyze business requirements, create detailed network architectures, select appropriate hardware and software, and ensure network performance, security, and scalability. These engineers also troubleshoot advanced issues, mentor junior staff, and stay up-to-date with the latest networking technologies to support evolving business needs.

What are the key skills and qualifications needed to thrive as a Sr Network Design Engineer?

A Sr Network Design Engineer needs deep expertise in network architecture, protocols, and security, often supported by a bachelor's degree in a related field and certifications like CCNP or CCIE. Familiarity with network design tools (such as Cisco Prime or SolarWinds), routing and switching hardware, and network simulation software is essential. Strong analytical thinking, problem-solving, and communication skills help translate business requirements into robust technical solutions. These skills and qualifications are vital for building resilient, scalable networks that support organizational goals and maintain high performance.

What are some typical challenges faced by Sr Network Design Engineers when implementing large-scale network solutions?

Sr Network Design Engineers often encounter challenges such as integrating new technologies with legacy infrastructure, ensuring network scalability, and meeting stringent security requirements. Balancing performance, reliability, and cost within the design can also be complex, especially when collaborating with cross-functional teams like security, operations, and architecture. Additionally, they must stay current with rapidly evolving network protocols and best practices, while troubleshooting unforeseen issues during deployment.

What does a senior network design engineer do?

A senior network design engineer plans, develops, and implements complex network infrastructure to ensure reliable and secure data communication. They analyze network requirements, select appropriate hardware and protocols, and often use tools like Cisco or Juniper. This role typically requires advanced knowledge of networking concepts, certifications such as CCNP or CCIE, and the ability to lead network projects and troubleshoot issues.

What are popular job titles related to Sr Network Design Engineer jobs in Illinois?

For Sr Network Design Engineer jobs in Illinois, the most frequently searched job titles are:

What job categories do people searching Sr Network Design Engineer jobs in Illinois look for?

The top searched job categories for Sr Network Design Engineer jobs in Illinois are:

What cities in Illinois are hiring for Sr Network Design Engineer jobs?

Cities in Illinois with the most Sr Network Design Engineer job openings:

Sr Network Design Engineer jobs near you
Infographic showing various Sr Network Design Engineer job openings in Illinois as of August 2026, with employment types broken down into 1% Internship, 87% Full Time, 8% Part Time, and 4% Contract. Highlights an 84% Physical, 5% Hybrid, and 11% Remote job distribution.

Senior Network Engineer

Scott Air Force Base, IL • On-site

GCyber
IT Services • 11 - 50 employees
Learn more about GCyberexternal

$100K - $137K/yr

Full-time

Medical, Dental, Vision, Retirement, PTO

Re-posted 14 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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