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Mobile Core Network Engineer Jobs in California (NOW HIRING)

GFiber

Senior Core Network Engineer

Sunnyvale, CA

$122.10K - $167.20K/yr

We are looking for a Senior Core Network Engineer to join the Core & Transport team. In this role, you will be a key architect of our network's future, responsible for the strategic design ...

Viasat

Technical Product Owner - 3GPP Core

Carlsbad, CA · On-site

$246.50K - $369.50K/yr

We're looking for someone who can bridge network engineering, standards, and operational excellence-enabling mobile core capabilities that not only meet 3GPP and GSMA interoperability standards, but ...

LLNL

Cloud and Core Network Engineer

Livermore, CA

We have an opening for a Cloud and Core Network Engineer . You will play a critical role in helping ... If you use a medical device, which pairs with a mobile device, you must still follow the rules ...

LLNL

Cloud and Core Network Engineer

Livermore, CA · On-site

We have an opening for a Cloud and Core Network Engineer You will play a critical role in helping ... If you use a medical device, which pairs with a mobile device, you must still follow the rules ...

LLNL

Cloud and Core Network Engineer

Livermore, CA · On-site

We have an opening for a Cloud and Core Network Engineer You will play a critical role in helping ... If you use a medical device, which pairs with a mobile device, you must still follow the rules ...

VDart

Network Engineer - SME

Pleasanton, CA · On-site

Network Engineer - SME Location: 4440 Rosewood drive, Pleasanton, CA - 94588 (Onsite) Contract-6+ ... Expertise in core network services such as DNS, DHCP/DDNS, and end-to-end network lifecycle ...

LLNL

Cloud and Core Network Engineer

Livermore, CA · On-site

$65.50 - $87.50/hr

We have an opening for a Cloud and Core Network Engineer You will play a critical role in helping ... Ifyou useamedical device, whichpairs with a mobile device,you must still follow the rules ...

Peregrine

Senior Network Engineer

San Francisco, CA · On-site

$122.50K - $167.90K/yr

Network Engineer or related field • Bachelor's degree or foreign equivalent degree in Computer Science, Engineering or related field • 3 years understanding of core network protocols such as:

Peregrine

Senior Network Engineer

San Francisco, CA · On-site

$122.50K - $167.90K/yr

Network Engineer or related field • Bachelor's degree or foreign equivalent degree in Computer Science, Engineering or related field • 3 years understanding of core network protocols such as:

Peregrine

Network Engineer

San Francisco, CA · On-site

They are seeking a Network Engineer to join their Infrastructure team, responsible for establishing ... core network protocols: LACP, Ethernet, VLANs, ARP, TCP/IP, Routing Protocols, DHCP, DNS, NAT. • ...

Kaav Inc.

Network Engineer

Ontario, CA · On-site

At its core, networking provides tools and capabilities to the organization that allow for easy and ... Engineering best practices * Assists in troubleshooting and resolving production system issues

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Mobile Core Network Engineer information

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$30.6K

$107.6K

$155.9K

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

As of May 28, 2026, the average yearly pay for mobile core network engineer in California is $107,612.00, according to ZipRecruiter salary data. Most workers in this role earn between $87,800.00 and $131,800.00 per year, depending on experience, location, and employer.

What is a Mobile Core Network Engineer job?

A Mobile Core Network Engineer is responsible for designing, implementing, and maintaining the core network infrastructure that enables mobile communication services. They work with technologies such as 4G LTE, 5G, and VoLTE to ensure seamless connectivity, call processing, and data transmission. Their tasks include network optimization, troubleshooting, integrating new services, and ensuring high availability and performance of the core network. They collaborate with various teams, including radio network engineers and software developers, to enhance network efficiency. This role requires strong knowledge of telecommunications protocols, networking principles, and emerging mobile technologies.

What are the key skills and qualifications needed to thrive in the Mobile Core Network Engineer position, and why are they important?

To thrive as a Mobile Core Network Engineer, you need in-depth knowledge of mobile network architecture, protocols like LTE/5G, and a background in telecommunications or computer science. Hands-on experience with core network elements (EPC, IMS), network monitoring tools, and certifications such as CCNP or vendor-specific credentials are highly valued. Strong analytical thinking, effective communication, and the ability to work both autonomously and in cross-functional teams are essential soft skills. These competencies ensure robust network performance, smooth issue resolution, and seamless collaboration in complex mobile environments.

What are some typical daily responsibilities for a Mobile Core Network Engineer?

Mobile Core Network Engineers are responsible for configuring, monitoring, and optimizing core network infrastructure to ensure reliable data and voice services. Their daily tasks include troubleshooting network issues, implementing upgrades or patches, analyzing performance metrics, and coordinating with teams across planning, operations, and security. The role often involves responding to incidents promptly, maintaining system documentation, and supporting network integration projects. Collaboration with other engineers and departments is key, making this position both technically rewarding and highly interactive.
More about Mobile Core Network Engineer jobs
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Mobile Core Network Engineer jobs near you

Senior Core Network Engineer

Aspire Broadband Holding Inc

Moorpark, CA • On-site

$130K - $150K/yr

Full-time

Medical, Dental, Vision, Life, PTO

Posted 24 days ago

Job description

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.
Requirements: