Senior IT Network Engineer

Spire•Boulder, CO

1d•$130,000 - $150,000•Hybrid

About The Position

The Senior IT Network Engineer owns and supports Spire’s corporate and back-office network environment. Reporting to the Global IT Director, this hands-on role is responsible for the design, implementation, operation, reliability, and lifecycle management of networks supporting offices, remote users, corporate services, and back-office systems. The engineer works closely with Security, Infrastructure, Facilities, Engineering, and other technical teams. The role covers corporate routing, firewalls, VPN and remote access, office-to-office connectivity, DNS, wireless networking, network authentication, and related infrastructure. It also includes modernizing legacy and bespoke network services, improving resiliency, and reducing operational dependence on individual subject-matter experts. The successful candidate is proactive and self-directed, able to own complex technical problems from architecture through implementation and ongoing operation, and applies disciplined documentation, change management, monitoring, lifecycle management, and follow-through. The position follows Spire’s hybrid work model and requires working in the office at least three days per week. Access to US export-controlled software or technology may be required; Spire will arrange any necessary licenses. The anticipated base salary is $130,000–$150,000 USD, with final compensation based on location, skills, experience, and qualifications. The role may also be eligible for annual equity awards and Spire’s employee benefits program.

Requirements

At least 5 years of experience in network engineering, network operations, infrastructure engineering, or a similar hands-on technical role.
Strong knowledge of TCP/IP, routing, switching, DNS, DHCP, NAT, VPNs, firewalls, VLANs, and network segmentation.
Hands-on experience designing, operating, and troubleshooting enterprise routing and switching environments.
Experience administering enterprise firewall platforms and implementing firewall policy and rule changes.
Experience designing, operating, and troubleshooting remote-access and site-to-site VPN technologies, including IPsec and SSL-based VPNs.
Strong troubleshooting skills and the ability to diagnose complex connectivity and network-service issues across multiple layers and systems.
Experience supporting multi-site corporate networks, including office connectivity, WAN services, wireless networking, and Internet circuits.
Experience with cloud networking in AWS, Azure, or similar environments.
Working knowledge of identity, authentication, MFA, certificates, and PKI as they relate to network access and infrastructure services.
Experience with network monitoring, logging, alerting, and operational troubleshooting tools.
Experience with scripting, infrastructure-as-code, or automation using Terraform, Python, PowerShell, shell scripting, APIs, or similar tools.
Demonstrated ability to own technical systems and projects through completion with limited supervision.
Strong documentation, change-management, and operational practices.
Ability to communicate clearly and collaborate effectively across IT, Security, Infrastructure, Facilities, Engineering, vendors, and carriers.
Ability to participate in after-hours escalation or on-call support for critical network incidents.

Nice To Haves

Experience with Palo Alto Networks firewalls or similar enterprise firewall platforms.
Experience with BGP and other dynamic routing protocols.
Experience with OpenVPN or other enterprise remote-access platforms.
Experience with AWS networking, including VPCs, Transit Gateway, Route 53, security groups, routing, and related services.
Experience with enterprise wireless platforms and 802.1X or certificate-based network authentication.
Experience with DNS administration, domain-management platforms, and related infrastructure services.
Experience managing PKI, certificates, or certificate-based authentication for network services.
Experience modernizing legacy or bespoke network environments and migrating toward more standardized enterprise platforms.
Experience supporting geographically distributed offices and hybrid cloud environments.
Experience managing network hardware lifecycle, carrier circuits, Internet providers, and vendor relationships.
Experience designing resilient corporate networks and reducing single points of failure or operational dependency.
Experience supporting environments with security, regulatory, or compliance requirements.
Experience working closely with Security teams on segmentation, firewall policy, secure access, infrastructure hardening, and incident response.

Responsibilities

Own the architecture, implementation, operation, and reliability of Spire’s corporate and back-office network environment.
Design, configure, maintain, and troubleshoot corporate routing, switching, wired and wireless networking, firewalls, VPNs, and office-to-office connectivity.
Own the corporate remote-access environment, including VPN architecture, operation, authentication integration, user connectivity, and troubleshooting.
Manage corporate firewall platforms and policies in partnership with Security, including implementation, rule changes, lifecycle management, and troubleshooting.
Design and maintain network segmentation and routing between corporate offices, corporate cloud services, remote-access environments, and approved external connections.
Own corporate DNS operations and related network services supporting identity, email, SaaS, endpoints, and other business systems.
Manage office-to-office and corporate site-to-site VPN connectivity, including IPsec tunnels and related routing.
Support corporate cloud networking for IT-owned systems and services, including routing, connectivity, security controls, and integration with office and remote-access networks.
Maintain and improve corporate wireless networking and network-authentication services.
Serve as the senior technical escalation point for complex corporate network outages and connectivity issues.
Troubleshoot complex problems involving routing, VPNs, firewalls, DNS, authentication, certificates, wireless networking, cloud connectivity, and interdependent network services.
Partner with Security on network-security architecture, firewall policy, segmentation, secure-access requirements, PKI, and other security controls.
Partner with Infrastructure and Engineering teams on connectivity between corporate and engineering environments, ensuring secure, reliable, and well-defined network boundaries.
Maintain accurate network diagrams, configurations, IP addressing, circuit information, operating procedures, and recovery documentation.
Develop and maintain scripts, infrastructure-as-code, and automation used to deploy, configure, monitor, or manage corporate network services.
Implement and maintain monitoring and alerting for network availability, reliability, capacity, and performance issues.
Plan and execute network hardware, software, certificate, circuit, and service lifecycle activities.
Support office openings, moves, expansions, consolidations, closures, and network infrastructure changes with End User Technology, Facilities, carriers, and vendors.
Manage or coordinate ISP, carrier, circuit, and network-vendor relationships where required.
Follow disciplined change-management practices, including planning, peer review, testing, documentation, rollback planning, and post-change validation.
Identify architectural, reliability, lifecycle, capacity, and operational risks and drive them through resolution.
Participate in after-hours escalation or on-call support for critical corporate network incidents when required.
Contribute to broader IT initiatives involving infrastructure modernization, reliability, automation, cloud services, workplace technology, and security.