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Freelance Core Network Engineer Jobs (NOW HIRING)

Aspire Fiber

Senior Core Network Engineer

Lake Mary, FL · On-site

$115K - $130K/yr

Position Summary We are seeking a highly experienced Senior Core Network Engineer to lead the design, implementation, and optimization of our carrier-grade IP/MPLS and FTTH network infrastructure.

Aspire Fiber

Senior Core Network Engineer

Moorpark, CA · On-site

$130K - $150K/yr

Position Summary We are seeking a highly experienced Senior Core Network Engineer to lead the design, implementation, and optimization of our carrier-grade IP/MPLS and FTTH network infrastructure.

AST SpaceMobile

Core Network Engineer, 3GPP Wireless

OR · On-site +1

Engineer, implement, and deploy 3GPP core network elements, including 4G LTE EPC (MME, SGW, DRA) and 5G Standalone Core (AMF, UPF, SMF, SEPP). * Work closely with Solutions Architects to translate ...

New

Grid-Networks

Senior Mobile Core Network Engineer

Reston, VA · On-site

$108K - $148K/yr

GRID Networks is seeking a Senior Mobile Core Network Engineer to join our mobile team. This role is critical to ensure the mobile network is healthy. Through automation, not just monitoring ...

Leidos

Sr. Core Network Engineer

Chantilly, VA · On-site

$92K - $166K/yr

Leidos has an opening for Sr. CORE Network Engineer to support our government customers' global enterprise networks. Network Architecture provides solutions for modernizing the network components ...

Grid Networks

Senior Mobile Core Network Engineer

Reston, VA · On-site

$108K - $148K/yr

GRID Networks is seeking a Senior Mobile Core Network Engineer to join our mobile team. This role is critical to ensure the mobile network is healthy. Through automation, not just monitoring ...

Leidos

Sr. Core Network Engineer

Chantilly, VA

$92K - $166K/yr

Leidos has an opening for Sr. CORE Network Engineer to support our government customers' global enterprise networks. Network Architecture provides solutions for modernizing the network components ...

Zachary Piper Solutions

Network Engineer

Amarillo, TX · On-site

$130K - $170K/yr

Maintain 99.9% availability of core network infrastructure, including routers, switches, and data center fabrics, while resolving network incidents and service outages within established SLAs.

C3EL

Senior Network Engineer

Honolulu, HI

$102K - $140K/yr

Senior Network Engineer Security Clearance: Secret Location : Fort Shafter Flats, HI (Due to the ... This position is responsible for the design, installation, configuration, and maintenance of core ...

C3EL

$103K - $141K/yr

Senior Network Engineer Fort Shafter Flats, HI Apply **CONTINGENT UPON CONTRACT AWARD** Overview ... This position is responsible for the design, installation, configuration, and maintenance of core ...

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Freelance Core Network Engineer information

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How much do freelance core network engineer jobs pay per year?

As of Sep 13, 2026, the average yearly pay for freelance core 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.

What is the difference between Freelance Core Network Engineer vs Network Operations Center (NOC) Technician?

AspectFreelance Core Network EngineerNetwork Operations Center (NOC) Technician
CertificationsCCNA, CCNP, Cisco certificationsCompTIA Network+, CCNA
Work EnvironmentRemote, client sites, project-based24/7 NOC facilities, shift work
Employer & IndustryFreelance, consulting firms, telecomsTelecom companies, managed service providers

The Freelance Core Network Engineer typically works independently on complex network design, configuration, and troubleshooting projects for clients remotely or on-site. In contrast, a NOC Technician monitors and maintains network health in a centralized facility, often working in shifts. Both roles require networking certifications like CCNA, but the freelance engineer focuses on project-based work, while the NOC technician handles ongoing network operations.

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Freelance Core Network Engineer jobs near you
Infographic showing various Freelance Core Network Engineer job openings in the United States as of September 2026, with employment types broken down into 1% Internship, 1% As Needed, 82% Full Time, 14% Part Time, and 2% Contract. Highlights an 91% Physical, 2% Hybrid, and 7% Remote job distribution, with an average salary of $109,040 per year, or $52.4 per hour.

Senior Core Network Engineer

Lake Mary, FL • On-site

Aspire Fiber
See more jobs at Aspire Fiberexternal

$115K - $130K/yr

Full-time

Medical, Dental, Vision, Life, PTO

Re-posted 14 days ago

Job description

Position Summary
We are seeking a highly experienced Senior Core Network Engineer to lead the design, implementation, and optimization of our carrier-grade IP/MPLS and FTTH network infrastructure. This role is critical to ensuring scalability, resiliency, and performance across our core, aggregation, and access networks.
The ideal candidate has deep experience operating within an Internet Service Provider (ISP) or telecommunications environment, with hands-on expertise in Adtran access platforms, Arista routing/switching, and large-scale FTTH deployments.
This is a senior-level technical role requiring both architectural leadership and advanced operational troubleshooting capability.
Key Responsibilities
Core Network Architecture & Engineering
  • Design, implement, and maintain high-availability IP/MPLS core networks.
  • Engineer scalable BGP-based edge and peering infrastructure.
  • Architect resilient L2/L3 topologies for aggregation and backbone layers.
  • Lead IPv4/IPv6 dual-stack strategy and deployment.

FTTH & Access Network Engineering
  • Design and support FTTH (Fiber-to-the-Home) GPON/XGS-PON environments.
  • Configure and manage Adtran OLTs, aggregation platforms, and access systems.
  • Support subscriber provisioning models and service delivery frameworks.
  • Collaborate with outside plant (OSP) and field engineering teams.

Routing & Switching (Arista Focus)
  • Deploy and support Arista switching and routing platforms in core and aggregation roles.
  • Implement EVPN/VxLAN where applicable.
  • Optimize traffic engineering, QoS, and multicast routing.

ISP Operations & Optimization
  • Support upstream providers, IX peering, and transit relationships.
  • Perform traffic capacity planning and bandwidth forecasting.
  • Lead root cause analysis of network outages and performance incidents.
  • Develop monitoring, alerting, and performance visibility standards.
  • Participate in Tier 3 escalation and on-call rotation.

Automation & Documentation
  • Drive automation initiatives (Python, Ansible, etc.).
  • Maintain accurate network diagrams, IP schema, and routing policies.
  • Develop operational runbooks and engineering standards.

  • Required Qualifications
    • 7-10+ years of experience in a carrier, ISP, or telecommunications environment.
    • Extensive experience with:
    - Adtran platforms (OLT, aggregation, access equipment)
    - Arista switches and routers
    - FTTH architecture and subscriber networks
    • Deep expertise in:
    - BGP (iBGP, eBGP, route reflectors)
    - OSPF and/or IS-IS
    - MPLS (L2VPN/L3VPN preferred)
    - VLAN, QinQ, QoS
    - Multicast (PIM)
    • Experience with ISP edge routing and peering design.
    • Strong troubleshooting skills in production networks serving large subscriber bases.
    • Experience designing high-availability and redundant architectures.

Preferred Qualifications
• Experience with GPON and XGS-PON design.
• Familiarity with BRAS/BNG architectures.
• Experience with subscriber management and AAA (RADIUS).
• Knowledge of DDoS mitigation and ISP security best practices.
• Experience with DWDM or transport integration.
• Industry certifications:
- CCNP/CCIE (Service Provider preferred)
- Arista ACE
- MEF or equivalent carrier certifications
Key Competencies
  • Carrier-grade design mindset
  • Strong understanding of ISP traffic patterns and subscriber behavior
  • Ability to operate in fast-growing network environments
  • Excellent documentation and cross-team communication skills
  • Leadership capability for mentoring junior engineers

Why Join Us?
  • Build and scale next-generation fiber infrastructure.
  • Work in a high-growth ISP environment.
  • Influence core network strategy.
  • Competitive compensation and benefits.
  • Medical, Dental, Vision, Long Term Disability, Short Term Disability and Voluntary Buy Up of Life Insurance
  • Paid time off
  • Parental Leave
  • Team Building events
  • Opportunity for technical leadership and career growth.

Salary Description
$115,000-$130,000 / year

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