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Tier Three Network Engineer Jobs (NOW HIRING)

InterImage

Tier 3 Network Engineer

Chantilly, VA

Tier 3 Network Engineer Company: InterImage InterImage is actively seeking an energetic, curious, and skilled engineer to join our team in Northern VA! We are looking for a Tier 3 Network Engineer to ...

Stem Xpert

Network engineer V

Frederick, MD

The Tier 3 Network Engineer needs to apply technical expertise in routing and switching (Cisco Nexus especially), load-balancing, firewalls and wireless to consult with Operations Engineering and/or ...

Netrio

Network Engineer

Mckinney, TX · On-site

Position Summary The Tier 3 Network Engineer will serve as a senior technical resource within our engineering team, responsible for the design, implementation, and advanced troubleshooting of complex ...

Genesis10

Network Engineer

Charlotte, NC · On-site

This senior-level role is responsible for Tier 3 network support and enterprise network ... junior engineers and contribute to knowledge sharing, technical standards, and continuous ...

MANTECH

Perform Tier II and Tier III network engineering support, while designing advanced WAN, LAN, and data center solutions. * Monitor and configure networks utilizing SolarWinds, Cisco DNAC, and Cisco ...

MANTECH

Perform Tier II and Tier III network engineering support, while designing advanced WAN, LAN, and data center solutions. * Monitor and configure networks utilizing SolarWinds, Cisco DNAC, and Cisco ...

DMI

Tier 3 Network Lead

Washington, DC · On-site

$109K/yr

Learn more at www.dminc.com About the Opportunity DMI, LLC is seeking a Tier 3 Network Lead who owns the performance of wired and wireless infrastructure across four distributed sites and manages the ...

DMI

Tier 3 Network Lead

Washington, DC

$109K - $119K/yr

Learn more at www.dminc.com About the Opportunity DMI, LLC is seeking a Tier 3 Network Lead who owns the performance of wired and wireless infrastructure across four distributed sites and manages the ...

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How much do tier three network engineer jobs pay per year?

As of Jul 21, 2026, the average yearly pay for tier three network engineer in the United States is $109,040.00, according to ZipRecruiter salary data. Most workers in this role earn between $89,000.00 and $133,500.00 per year, depending on experience, location, and employer.
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Infographic showing various Tier Three Network Engineer job openings in the United States as of July 2026, with employment types broken down into 75% Full Time, and 25% Contract. Highlights an 100% In-person job distribution, with an average salary of $109,040 per year, or $52.4 per hour.
Tier 3 Network Engineer

Tier 3 Network Engineer

InterImage

Chantilly, VA

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Re-posted 24 days ago

Job description


Join Our Mission-Critical Team!

Position: Tier 3 Network Engineer

Company: InterImage

InterImage is actively seeking an energetic, curious, and skilled engineer to join our team in Northern VA!  We are looking for a Tier 3 Network Engineer to support a government customer’s global enterprise network. Big picture, the Tier 3 engineering team provides implementation support to the network architecture team as well as troubleshooting expertise to a 24/7 Network Operations Center (NOC).  This position is essential to the customer’s mission and is viewed as a technical leader.
Responsibilities:
•    Provide Tier 3 support to the Network Operations Center (NOC)
•    Supports an organization’s local area network (LAN), wide area network (WAN), customer networks and other data communications systems
•    Monitor the network to ensure network availability to all system users and perform necessary maintenance to support network stability
•    Maintain network hardware and software
•    Proactively identify risks in the network and develop a strategy to mitigate those risks.
•    Provide technical expertise to network architects and site technicians
•    Supports numerous business requirements for telecommunications (e.g., LAN, MAN, WAN, Voice and Video)
•    Configure, and test hardware, networking software and operating system software
•    Prepare technical proposals for presentation to the NRO’s engineering review boards for adding new technologies to the network
•    Perform a full range of upgrades in accordance with existing network architecture
•    Utilize complex network analysis tools to identify and correct problems in the network
•    Prepare troubleshooting procedures for restoring the network to optimal performance levels
•    Provide fault management for the network and support performance management functions
•    Execute reporting functions and data input associated with network management
•    Monitor security posture of the network, report suspected violations to designated authority
•    Analyze network characteristics (e.g., traffic, connect time, transmission speeds, packet sizes, and throughput); recommend procurement, removals, and modifications to network components
•    Optimize network topologies and site configurations. Plan installations, transitions, and cutovers of network components and capabilities
Here’s What You’ll Need:
•    Hands on troubleshooting and fault isolation experience of IT business systems.
•    Active TS/SCI w Polygraph is required
•    16 years of experience that can be a combination of work history and education. This equates to a Doctorate and 8 years of experience OR a Master’s and 10 years, a Bachelor’s and 12 years, an Associates and 14 years or HS and 16 years
•    Must have a strong understanding of the OSI model and configuration of routing protocols such as OSPF, MPLS, BGP, LDP
•    Must have a strong understanding of layer 2 technologies
•    Familiarity with cloud technologies
•    Must have or obtain DoD 8570 Information Assurance Technical (IAT) Level 2 a (Security CE)

Why InterImage?

At InterImage, we offer a competitive salary with great benefits. Join a team dedicated to making a difference and contributing to critical missions. Embrace the opportunity to work in a collaborative environment where your skills are valued, and your creativity is encouraged.

InterImage Benefits Snapshot:

  • 401K - 7% contribution with 3% profit sharing; 1-year cliff vesting schedule
  • Paid Time Off: 4 weeks
  • Paid Holiday Leave: 11 days (88 Hours)
  • Life Insurance: $50,000; 100% of premium
  • Short-term/Long-term Insurance: 100% premium
  • Healthcare: 2 CareFirst Administrator plans offered, $0 Employee only option, Metlife for Vision, and The Standard for Dental.



     



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