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Cs Core Network Engineer Jobs (NOW HIRING)

Lumos

Sr. Engineer - Core Network

$106K - $145K/yr

Lumos Fiber is seeking a Sr. Engineer, Core Network to help design, build, and optimize the core network infrastructure that powers our rapidly expanding fiber footprint. In this role, you will be ...

TextNow

Tech Lead, Mobile Core Network Engineering

$103K - $143K/yr

If you're a strong SRE or infrastructure engineering leader with deep networking knowledge and a ... Own the Mobile Core Platform: Take end-to-end accountability for the health, performance, and ...

Emergent Technologies Inc

Network Engineer (Senior)

Herndon, VA · On-site

$106K - $146K/yr

Network Engineer - Senior POS-195 Location: On-Site | Herndon, VA Company: Emergent Technologies ... Core network technologies: * Routing protocols: EIGRP, BGP, ISIS * Switching protocols: STP, LACP ...

Brown & Brown

Network Engineer

Plano, TX · On-site

Brown & Brown is seeking a Network Engineer to join their growing team in Plano, TX. The Network ... Support core network services including DHCP, DNS, IP addressing / subnetting, and network ...

Huntington

Network Engineer 3

Dallas, TX · Hybrid

In addition to these core responsibilities, Network Engineer 3 designs tailored network solutions, anticipates operational risks, leads automation initiatives, and effectively communicates complex ...

Huntington

Network Engineer 3

Akron, OH · Hybrid

In addition to these core responsibilities, Network Engineer 3 designs tailored network solutions, anticipates operational risks, leads automation initiatives, and effectively communicates complex ...

Huntington

Network Engineer 3

Birmingham, AL · Hybrid

In addition to these core responsibilities, Network Engineer 3 designs tailored network solutions, anticipates operational risks, leads automation initiatives, and effectively communicates complex ...

Huntington

Network Engineer 3

Columbus, OH · Hybrid

In addition to these core responsibilities, Network Engineer 3 designs tailored network solutions, anticipates operational risks, leads automation initiatives, and effectively communicates complex ...

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

As of Jun 25, 2026, the average yearly pay for cs 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 are the key skills and qualifications needed to thrive in the Cs Core Network Engineer position, and why are they important?

To thrive as a Cs Core Network Engineer, you need strong knowledge of telecommunications core network architecture, signaling protocols (such as SS7, SIP, and Diameter), IP networking, and a relevant engineering or IT degree. Experience with network management tools, packet core solutions (e.g., Ericsson, Nokia, Huawei), and certifications like CCNP or vendor-specific credentials are highly valued. Analytical thinking, problem-solving, and effective communication are vital soft skills for this role. These skills ensure reliable network performance, fast resolution of issues, and seamless collaboration within cross-functional teams.

What is a CS Core Network Engineer job?

A CS Core Network Engineer is responsible for managing and maintaining the Circuit-Switched (CS) core network in a telecommunications system. They ensure the reliability, performance, and security of core network elements like MSC, HLR, and STP. Their role includes troubleshooting network issues, optimizing performance, and implementing upgrades. They work closely with other network teams to support voice and signaling services.

What are some common challenges Cs Core Network Engineers face in their daily work?

Cs Core Network Engineers frequently deal with high-pressure situations such as troubleshooting complex network outages or performance degradations, often requiring rapid diagnosis and resolution to maintain service availability. They must stay current with evolving telecom technologies and adapt quickly to changes in network infrastructure or vendor systems. Collaboration with other engineers, operations, and sometimes customers is common, especially when implementing upgrades or deploying new features. These challenges make the role dynamic and rewarding, providing ample opportunities to learn and grow professionally.

More about Cs Core Network Engineer jobs
What are the most commonly searched types of Cs Core Network Engineer jobs? The most popular types of Cs Core Network Engineer jobs are:
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Cs Core Network Engineer jobs near you
Sr. Engineer - Core Network

Sr. Engineer - Core Network

Lumos

Remote

$106K - $145K/yr

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Posted 14 days ago

Job description

Lumos Fiber is seeking a Sr. Engineer, Core Network to help design, build, and optimize the core network infrastructure that powers our rapidly expanding fiber footprint. In this role, you will be responsible for enhancing the reliability, scalability, and security of our IP routing environment while evaluating and implementing new technologies that support network growth and performance.
This is an exciting opportunity for a network engineering professional who enjoys solving complex technical challenges and influencing the future of a modern service provider network. The ideal candidate brings deep expertise in IP networking, a passion for continuous improvement, and thrives in a fast-paced, high-growth environment where innovation and collaboration are highly valued.
Company Summary
Lumos is on a mission to deliver lightning-fast, 100% Fiber Optic internet to the communities that need it most. After the merger of Lumos Networks and North State in 2022, we quickly rose to become a leading fiber internet provider. And as of April 1, 2025, we've joined forces with T-Mobile to launch T-Fiber-a joint venture that blends Lumos' infrastructure expertise with T-Mobile's national reach to bring fiber to more homes than ever before.
We currently connect over 475,000 homes, businesses, and multi-family buildings across nine states in the East and Midwest. With major growth in markets like Ohio, Alabama, Florida, and Georgia-and a shared goal of reaching 12 to 15 million homes by 2030-Lumos is playing a vital role in closing the digital divide.
Our Mission and Values
At Lumos, we are driven by our commitment to a brighter tomorrow. We take pride in being the first to deliver 100% Fiber Optic Internet for families, small businesses, and communities. We know the possibilities of tomorrow can't be built on the infrastructure of yesterday. And when we deliver uninterrupted Internet and limitless capacity, we create new opportunities for everyone.
We believe that the past is over, and the future is fast. That's why we are who we are: the disruptors of the status quo. Guided by our purpose and startup mindset, we step up, move first, and adapt as we go. Here, there's no hierarchy, only hustle.
We are all servant leaders, confident in our purpose and humble enough to pay close attention to the details. We all have the power to help solve problems and find solutions for our customers and teammates - and we do - by putting people first and doing whatever it takes to build loyalty with our customers and within our team.
We're passionate about our customers' experience. Their futures don't stand still, and neither do ours. We'll never stop reinventing ourselves to meet our customers' evolving needs - because we know that our work, delivering 100% fiber optic internet, truly changes people's lives.
Essential Functions
Network Architecture & Engineering
  • Design, implement, and support core IP routing infrastructure and related network services.
  • Evaluate, lab test, and validate new technologies, platforms, and service offerings to support network growth and performance objectives.
  • Design and implement network security enhancements and infrastructure hardening initiatives.
  • Develop technical requirements and engineering standards for commercial products and network services.
  • Create and maintain best practices, design standards, and documentation for current and future network architectures.
  • Identify opportunities to improve network reliability, scalability, and operational efficiency.

Network Operations & Technical Leadership
  • Provide Tier IV support for complex network and customer-impacting issues, serving as a technical escalation point across the organization.
  • Partner with Network Operations, Field Operations, Product, Sales Engineering, and Customer Support teams to troubleshoot and resolve service issues.
  • Analyze recurring network issues and develop long-term solutions that improve network stability and customer experience.
  • Research, test, and implement operating system upgrades, patches, and infrastructure improvements.
  • Support strategic initiatives related to IPv6 deployment, routing optimization, network automation, and service innovation.
  • Participate in industry events, vendor demonstrations, and technical training to remain current on emerging technologies and industry trends.

Knowledge, Skills, and Abilities Required
  • CCNP (Cisco Certified Network Professional) certification or equivalent hands-on experience supporting enterprise or service provider networks.
  • Strong expertise in IP routing, carrier-grade networking, and ISP network operations.
  • Experience designing, implementing, and supporting IPv6 network environments.
  • Experience with virtualization technologies and virtualized network infrastructure.
  • Strong working knowledge of Linux operating systems and administration.
  • Experience working with MySQL and PostgreSQL database structures and environments.
  • Deep understanding of routing protocols, network architecture, security principles, and network performance optimization.
  • Strong written and verbal communication skills with the ability to explain technical concepts to both technical and non-technical audiences.

Other Experience & Requirements
  • 7+ years of experience in network engineering, core network operations, or related telecommunications engineering roles.
  • Bachelor's degree in Engineering, Computer Science, Information Technology, or a related field preferred; equivalent experience will be considered.
  • Experience supporting Internet Service Provider (ISP) or telecommunications networks strongly preferred.
  • Experience with Nokia networking platforms and configurations preferred.
  • Experience working with ARIN and internet resource management preferred.
  • Demonstrated success designing and supporting scalable network infrastructure in high-growth environments.

Physical Requirements
  • Frequently operates a computer, keyboard, and other standard office equipment.
  • Near-constant use of sight, speech, hearing, comprehension, and reasoning.
  • Primarily remote work with occasional travel to a Lumos office or offsite meetings as needed.
  • Must be able to sit or remain in a stationary position for extended periods.

Benefits & Perks
Our commitment to communities includes recruiting and rewarding the Lumos team members who are working together to build a brighter tomorrow.
We have:
  • Comprehensive health, dental, and vision coverage.
  • Competitive compensation packages, including bonus options for eligible positions.
  • Paid Time Off & Paid Holidays.
  • Health Savings Accounts (HSAs) and Flexible Spending Accounts (FSAs).
  • 100% employer-paid life and disability insurance.
  • Employee Assistance Program (EAP) with access to professional support for life's challenges.
  • 401K plan w/ up to 5% employer contribution and a self-directed brokerage option.
  • Wellness program offering education and cash incentives for gym attendance and nutrition programs.
  • Employee referral bonuses.
  • Discounts on Lumos Fiber Internet for employees who live in our service areas.

Applicant Eligibility Notice:Applicants must be at least eighteen (18) years of age at the time of application.
At Lumos we recruit, hire, employ, train, promote, and compensate individuals based on job-related qualifications and abilities. We have a longstanding policy of providing a work environment that respects the dignity and worth of each individual and is free from all forms of employment discrimination, including harassment, because of race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state or local laws. We will provide reasonable accommodation to qualified individuals with disabilities or based on a sincerely held religious belief, in accordance with applicable laws.

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