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Tier Three Network Engineer Jobs (NOW HIRING)

MANTECH

Network Engineer

Chantilly, VA · On-site

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 ISE ...

Leidos

Tier III Senior Network Engineer

Tampa, FL · On-site

$98K - $134K/yr

Leidos has an opening for a highly motivated Tier III Senior Network Engineer at MacDill AFB, FL. As the Senior Network Engineer, you will support the Global Solutions Management-Operations II (GSM-O ...

Leidos

Tier III Senior Network Engineer

Tampa, FL · On-site

$73K - $132K/yr

Leidos has an opening for a highly motivated Tier III Senior Network Engineer at MacDill AFB, FL. As the Senior Network Engineer, you will support the Global Solutions Management-Operations II (GSM-O ...

Magna5

Tier 3 Senior Network Engineer, End User Support

$106K - $145K/yr

Title: Tier 3 Network Engineer **Remote position. Must be eligible to work in the United States. About the Role This is a senior-level Network Engineer role focused on leading complex client ...

RIT Solutions, Inc.

Network Engineer - Federal

... II/Tier III network support and on-call support as needed • Ensure compliance with client ... Engineering, or a related field, or equivalent relevant experience • Minimum of 3-5 years of ...

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

As of Sep 3, 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.

How much does a Tier Three Network Engineer make?

A Tier Three Network Engineer typically earns between $80,000 and $120,000 annually, depending on experience, certifications, and location. They often work with advanced networking tools and may hold certifications like Cisco CCNP or CCIE.

What is a Tier Three Network Engineer?

A Tier Three Network Engineer is a senior-level IT professional responsible for troubleshooting complex network issues, designing network solutions, and supporting network infrastructure. They often work with advanced tools, protocols, and may hold certifications like Cisco CCNP or CCIE, typically operating in a team environment with a focus on network stability and performance.
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Tier Three Network Engineer jobs near you
Infographic showing various Tier Three Network Engineer job openings in the United States as of August 2026, with employment types broken down into 1% As Needed, 82% Full Time, 11% Part Time, and 6% Contract. Highlights an 93% Physical, 2% Hybrid, and 5% Remote job distribution, with an average salary of $109,040 per year, or $52.4 per hour.

Network Engineer

MANTECH

Chantilly, VA • On-site

Other

Re-posted 3 days ago

ManTech rating

8.8

Company rating: 8.8 out of 10

Based on 15 frontline employees who took The Breakroom Quiz

48th of 247 rated software companies

Job description

MANTECH seeks a motivated, career and customer-oriented Network Engineer to join our team in Chantilly, VA. This is an onsite position.

Responsibilities include but are not limited to:

  • 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 ISE to analyze complex network requirements and ensure complete, functioning infrastructure

  • Create, maintain, and interpret highly detailed technical network diagrams, routing topology schemas, and robust hardware configuration baselines

  • Coordinate across large internal teams, stakeholders, and Sponsor authorities to drive infrastructure agendas and successfully navigate systems engineering processes

  • Participate in all phases of the ITIL Service Lifecycle, including submitting Change Requests and maintaining security event monitoring policies

  • Evaluate current network architectures, inventory complex routing pathways, and recommend process improvements to optimize performance and throughput

  • Deliver end-to-end functional analysis, requirements specification, cost estimation, and engineering package releases for customer production IT environments

Minimum Qualifications:

  • High School Diploma or GED with 7+ years of progressively responsible experience in Network Engineering, Network Analysis, or a related technical discipline

  • Cisco Certified Network Associate (CCNA) certification, or equivalent routing/switching technical certification, ex., Juniper Networks Certified Associate – Junos (JNCIA-Junos)

  • DoD 8570 IAT Level II Certification, e.g., Security+

  • DoD 8570.1 / DoD 8140.01 (IAT III Level) certification required within 6 months of hire, e.g., SecurityX

Preferred Qualifications:

  • Bachelors degree in an engineering discipline

  • Experience using and administering SolarWinds alongside deep knowledge of Microsoft Windows Systems, HP SANs, and VMware products

  • Advanced experience managing VPNs, GRE tunnels, routing protocols (BGP E/I, OSPF), VLANs, VRFs, and configuring KGs

  • Strong familiarity with Cisco ACI, data center fabric best practices, Ansible, and Desired State Configuration (DSC)

  • Practical knowledge of BICSI standards, terminating fiber and Cat 5 cabling, as well as familiarity with NSTISSAM TEMPEST/2-95 and CNSSAM TEMPEST/01-13 guidelines

Clearance Requirements:

  • Must have a current and active TS/SCI clearance

Physical Requirements:

  • The person in this position must be able to remain in a stationary position 50% of the time. Occasionally move about inside the office to access file cabinets, office machinery, or to communicate with co-workers, management, and customers, via email, phone, and or virtual communication, which may involve delivering presentations.

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