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Senior Network Engineer Jobs in Waterloo, IL (NOW HIRING)

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 ...

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

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 · 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 ...

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 ...

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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Showing results 21-40

All JobsNetwork Engineer JobsSenior Network Engineer JobsSenior Network Engineer Jobs in Waterloo, IL

Senior Network Engineer information

See Waterloo, IL salary details

$39.4K

$114.7K

$162.1K

How much do senior network engineer jobs pay per year?

As of Aug 12, 2026, the average yearly pay for senior network engineer in Waterloo, IL is $114,650.00, according to ZipRecruiter salary data. Most workers in this role earn between $96,300.00 and $132,000.00 per year, depending on experience, location, and employer.

What is a senior network engineer?

Senior Network Engineers are experienced IT professionals responsible for designing, implementing, and managing complex computer networks within organizations. They oversee network infrastructure, troubleshoot issues, ensure network security, and optimize performance. Typically, they lead network projects, mentor junior staff, and collaborate with other IT teams to support business operations. Their expertise covers a range of technologies, including routers, switches, firewalls, and cloud networking.

What are some common challenges faced by senior network engineers when managing large-scale network infrastructures?

Senior Network Engineers often encounter challenges such as integrating new technologies into legacy systems, ensuring network security across a growing number of devices, and maintaining high availability while performing upgrades or troubleshooting. Balancing the demands of multiple stakeholders—like IT, security, and business units—can also be complex. Staying updated with evolving protocols and proactively identifying potential performance bottlenecks are crucial parts of effectively managing large-scale environments.

What does a senior network engineer do?

A senior network engineer builds and maintains data communication networks for a company or organization. As a senior network engineer, you have several years of industry experience and lead a team of junior network engineers and network administrators to ensure both the local area network (LAN) and wide area network (WAN) are functioning properly. Your job duties include installing software and hardware, creating a layout plan for cables, and troubleshooting and solving problems that arise with the networks for which you are responsible.

What is the difference between Senior Network Engineer vs Network Administrator?

AspectSenior Network EngineerNetwork Administrator
CertificationsCCNP, CCIE, Cisco certificationsCCNA, CompTIA Network+
Work EnvironmentDesign, implement, and troubleshoot complex networksMaintain and support existing network infrastructure
ResponsibilitiesNetwork architecture, advanced troubleshooting, project leadershipNetwork setup, monitoring, routine maintenance

While both roles involve network management, a Senior Network Engineer focuses on designing and implementing complex network solutions, often leading projects. In contrast, a Network Administrator primarily maintains and supports existing networks, ensuring smooth daily operations.

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

To excel as a Senior Network Engineer, you need a deep understanding of network architecture, protocols, security, and typically a bachelor's degree in computer science or a related field. Expertise in configuring and troubleshooting routers, switches, firewalls, and experience with tools like Cisco IOS, Juniper, or cloud networking platforms, along with certifications such as CCNP or CCIE, are highly valued. Strong problem-solving abilities, communication skills, and leadership are crucial for designing solutions and collaborating with IT teams. These competencies ensure reliable, secure, and scalable network infrastructures that support critical business operations.
More about Senior Network Engineer jobs
What are the most commonly searched types of Network Engineer jobs in Waterloo, IL? The most popular types of Network Engineer jobs in Waterloo, IL are:
What job categories do people searching Senior Network Engineer jobs in Waterloo, IL look for? The top searched job categories for Senior Network Engineer jobs in Waterloo, IL are:
What cities near Waterloo, IL are hiring for Senior Network Engineer jobs? Cities near Waterloo, IL with the most Senior Network Engineer job openings:
Senior Network Engineer jobs near you
Infographic showing various Senior Network Engineer job openings in Waterloo, IL as of August 2026, with employment types broken down into 1% As Needed, 80% Full Time, 12% Part Time, and 7% Contract. Highlights an 93% Physical, 2% Hybrid, and 5% Remote job distribution, with an average salary of $114,650 per year, or $55.1 per hour.

Senior Network Engineer - TS/SCI with Polygraph

GDIT

Saint Louis, MO • On-site

$111K - $150K/yr

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Re-posted 3 days ago

General Dynamics Information Technology rating

7.8

Company rating: 7.8 out of 10

Based on 63 frontline employees who took The Breakroom Quiz

87th of 223 rated it services

Job description

Type of Requisition:

Pipeline

Clearance Level Must Currently Possess:

Top Secret SCI + Polygraph

Clearance Level Must Be Able to Obtain:

Top Secret SCI + Polygraph

Public Trust/Other Required:

None

Job Family:

IT Infrastructure and Operations

Job Qualifications:

Skills:

Cisco, CISSP, Local Area Network (LAN), Transport Technologies, WAN Networking

Certifications:

None

Experience:

8 + years of related experience

US Citizenship Required:

Yes

Job Description:

Location: Springfield, VA (Customer Site)
Travel: Approximately 25%
Clearance: Active TS/SCI with ability to obtain a Polygraph
Citizenship: US Citizenship Required

GDIT has an exciting and challenging opportunity for a Network Engineer supporting an Intelligence Community customer's wide-area (WAN), local-area (LAN), and campus-area (CAN) networks across multiple security domains. In this role, you will support new engineering initiatives, lead efforts around network modernization, and ensure the sustained operation of missioncritical infrastructure.

Responsibilities:

  • Coordinate system maintenance, monitoring, and installation activities across diverse WAN/LAN environments and technologies.

  • Research, recommend, and implement enterprise network capabilities and enhancements aligned with mission and business objectives.

  • Troubleshoot and resolve issues with network media, components, and connectivity.

  • Evaluate and monitor network health, performance, and hardware/software effectiveness.

  • Develop and maintain technical roadmaps for network capabilities, operations, and technologies.

  • Create and execute detailed test plans and documentation for all network configuration changes, upgrades, and additions.

  • Support network traffic analysis and bandwidth optimization to meet performance and availability targets.

  • Assess and provide recommendations on emerging network and communication technologies.

  • Recommend upgrades and changes aligned with industry standards and best practices.

  • Adhere to all customer network security policies, procedures, and compliance requirements.

  • Represent customer requirements and priorities during technical exchanges with partner agencies.

  • Conduct site surveys for new installations and technology refresh initiatives.

  • Install, maintain, and troubleshoot satellite communications equipment.

  • Create and maintain network architecture diagrams.

Required Qualifications:

  • Active TS/SCI clearance with ability to obtain a Polygraph

  • BS degree or equivalent experience

  • 8+ years of hands-on experience with network and transport technologies, tools, and techniques

  • 4+ years supporting large-scale enterprise or global networks in a fastpaced, diverse environment

  • Active 8570/8140 Approved IAT II certification required

  • Working knowledge of DoD Architecture Framework and related DoW network architecture guidance

  • Experience with Juniper network devices (MX, EX, SRX) and cryptographic devices (KG175G/X, KG245A/X)

  • Proficiency with network analysis tools (HP/Microfocus NA/NNM, Juniper Secure Analytics, Infoblox, Riverbed)

  • Experience with Juniper firewall/VPN technologies (SRX series)

  • Experience supporting IP services for NIPRNET, SIPRNET, and JWICS (IPv4/IPv6, VPN, Multicast, QoS, SDN, SNMP, VOIP, VTC, etc.)

  • Strong understanding of OSPF, BGP, MPLS, RSVP/LDP Layer 2/3 VPNs, VRFs, IKE/IPSec, GRE tunnels, MTU, FTP, and routing policy frameworks

Desired Qualifications:

  • Master's degree in Computer Science or related field

  • Professional certifications such as JNCIA, JNCIS, JNCIP, CCNP, CCVP, CCNA, or CCDP

  • ITIL v3 Foundations

  • ISC2 CISSP

The likely salary range for this position is $111,155 - $150,385. This is not, however, a guarantee of compensation or salary. Rather, salary will be set based on experience, geographic location and possibly contractual requirements and could fall outside of this range.

Scheduled Weekly Hours:

40

Travel Required:

10-25%

Telecommuting Options:

Onsite

Work Location:

USA VA Springfield

Additional Work Locations:

USA MO St. Louis

Total Rewards at GDIT:

Our benefits package for all US-based employees includes a variety of medical plan options, some with Health Savings Accounts, dental plan options, a vision plan, and a 401(k) plan offering the ability to contribute both pre and post-tax dollars up to the IRS annual limits and receive a company match. To encourage work/life balance, GDIT offers employees full flex work weeks where possible and a variety of paid time off plans, including vacation, sick and personal time, holidays, paid parental, military, bereavement and jury duty leave. To ensure our employees are able to protect their income, other offerings such as short and long-term disability benefits, life, accidental death and dismemberment, personal accident, critical illness and business travel and accident insurance are provided or available. We regularly review our Total Rewards package to ensure our offerings are competitive and reflect what our employees have told us they value most.

Our Identity Verification Process:

As part of the hiring process, we will ask you to complete an identity verification process that leverages advanced biometrics and artificial intelligence to ensure authenticity and protect against identity fraud. You are expected to be on camera during virtual interviews. We reserve the right to take your picture to verify your identity and prevent fraud. By proceeding, you authorize the collection, processing, and use of your biometric data for identity verification and security purposes.

About Our Work:

We are GDIT. A global technology and professional services company that delivers technology solutions and mission services to every major agency across the U.S. government, defense and intelligence community. Our 26,000 experts extract the power of technology to create immediate value and deliver solutions at the edge of innovation. We operate across 50+ countries worldwide, offering leading mission-ready capabilities in AI, cloud, cyber and software development.Join our Talent Community to stay up to date on our career opportunities and events at

gdit.com/tc.

Equal Opportunity Employer / Individuals with Disabilities / Protected Veterans

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About General Dynamics Information Technology

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GDIT is a global technology and professional services company that delivers technology solutions and mission services to every major agency across the U.S. government, defense, and intelligence community. Its 30,000 experts extract the power of technology to create immediate value and deliver solutions at the edge of innovation. The company operates across 50+ countries worldwide, offering leading capabilities in digital modernization, AI/ML, cloud, cyber, and application development.

Industry

It services

Company size

10,000+ Employees

Headquarters location

Falls Church, VA, US

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