Senior Network Engineer

Our Vision: Be the best at what we do. Our Mission: Improve lives through technology.

Summary:

“Customer Inspired” isn’t our slogan — it’s our driving force, and C Spire team members live it. We aim to engage the exceptional and embrace operational excellence to best deliver connectivity and technology solutions that advance our communities and customers’ lives. It’s a challenging goal, but we have a winning team that is looking to grow.

As a Senior Network Engineer within our Managed Services team, you will design, implement, and support advanced network and security infrastructures for a diverse portfolio of clients. This role is for a hands-on, highly skilled engineer who thrives on solving complex problems, leading technical discussions, and driving innovation across multiple technology stacks. You’ll be expected to act as both a subject matter expert (SME) and a trusted advisor, helping customers achieve performance, visibility, and security excellence across their environments.

Responsibilities:

What You Will Do
In all of your duties, you will have a relentless, obsessive, yet disciplined approach to manage all details to perfection and deliver desired results.

• Design, implement, and maintain enterprise network and security infrastructures for managed clients.

• Serve as Tier III escalation for complex routing, switching, wireless, and firewall issues across Cisco, Meraki, and Fortinet environments.

• Lead client onboarding, migrations, and deployments, including configuration templates, testing, and go-live support.

• Conduct proactive network health assessments, implement remediations, and ensure optimal uptime and performance.

• Participate in design reviews, customer calls, and technical discussions as a subject matter expert.

• Develop and maintain detailed network documentation, diagrams, and standardized configuration templates.

• Collaborate with internal engineering, operations, and automation teams to enhance service delivery and tooling.

• Stay informed on vendor updates, firmware advisories, and evolving best practices to strengthen network reliability and security posture.

• Perform additional duties as assigned.

This position is an exceptional introduction to network engineering leadership, as there is plenty of room to grow and learn from outstanding individuals in the field. From Senior Network Engineer you will have a perfect springboard into all areas of C Spire and develop robust career skills.

Qualifications:

What You Will Bring
As a C Spire team member you will bring a relentless obsession to be the best in our industry and a winning mentality, determined to outsmart and outdo competitors. You will have a single-minded commitment to unbeatable internal customer and external client experience. To support our Managed Services team you will have an unapologetic passion for innovation and technology and an uncompromising drive toward continuous improvement.

In addition to that, we require:

• 5+ years of experience as a network engineer in an MSP, VAR, or enterprise environment.

• Expert-level knowledge of Cisco enterprise networking (Catalyst, ISR, WLC).

• Strong proficiency with Meraki (MX, MS, MR, Systems Manager) and Fortinet (FortiGate, FortiAuthenticator, FortiManager, EMS).

• Proven experience with:
  • L2/L3 switching and routing (BGP, OSPF, EIGRP)
  • VPN technologies (IPSec, SSL, site-to-site, client)
  • VLANs, NAT, ACLs, QoS, and high availability configurations

• Experience with firewall security principles, policies, and troubleshooting.

• Knowledge of NAC solutions and network segmentation.

• Excellent troubleshooting methodology and strong documentation practices.

• Exceptional communication skills and professionalism in client-facing engagements.

• Cisco Certified Network Professional (CCNP) — minimum requirement; CCIE preferred.

• One or more of the following additional certifications:
  • Fortinet NSE 4+
  • Cisco DevNet Associate, CyberOps, or Meraki ECMS
  • Microsoft AZ-900, SC-300, or equivalent Azure certifications

We will give special consideration to candidates who have:

• MSP, carrier, or multi-tenant NOC experience.

• Experience with scripting or network automation (Python, Ansible, Meraki/Forti APIs).

• Background in network segmentation, Zero Trust architecture, or secure SD-WAN.

• Familiarity with VoIP QoS and troubleshooting (CUCM, Webex, RingCentral, etc.).

What You Will Gain
A great workplace needs more than dental coverage, though we provide that and excellent health insurance. But that’s just the start. We make sure working at C Spire is the best career experience around. And Forbes has named us one of America's Best Midsize Employers multiple times because of it. We also offer:

• Competitive Compensation Package

• Blue Cross Blue Shield Health Insurance

• Tuition Assistance Programs

• Complimentary Wireless Service & Device*

• 401k Match

• Teladoc Telemedicine

• WellBeacon Wellness Program

• Paid Talent Referral Opportunities

• Tailored learning paths for every position

Physical Requirements and Working Conditions
Must be able to sit for long periods of time and use computer keyboard and/or mouse while viewing computer screen. Must be able to adapt and perform in a rapidly changing environment. Some travel, including occasional overnight stays, is required for client deployments and site engagements.

Complimentary wireless service and device available to team members in our wireless footprint.