Senior IT Network Engineer

Spire; Washington (District of Columbia); On-site; USD 150,000 - 190,000; Full time

Job summary

Spire is seeking an experienced Senior IT Network Engineer to own and support the corporate and back-office network environment in the Washington, DC area. Reporting to the Global IT Director, you will architect, implement, operate, and maintain the network infrastructure across offices, remote users, and backend services.

You will lead design and operation of routing, switches, VPNs, VPN access, DNS, wireless, and security-aligned network services, while driving reliability, lifecycle

Qualifications

• 5+ years of hands-on network engineering or related roles.
• Strong knowledge of enterprise IP networks and services.
• Experience with routing, switching, DNS/DHCP, VPNs, and security controls.

Responsibilities

• Own architecture, implementation, operation, and reliability of the corporate network.
• Design, configure, maintain, and troubleshoot routing, switching, wireless, firewalls, VPNs, and site connectivity.
• Manage remote access, VPN architecture, authentication integration, and user connectivity.
• Oversee firewall platforms, policy lifecycle, and security coordination with other teams.
• Maintain DNS operations and network services supporting identity, email, SaaS, endpoints.
• Develop and maintain scripts and automation for network deployment and monitoring.
• Participate in after-hours escalations and on-call support as needed.
• Document network diagrams, configurations, IP schemes, and recovery procedures.

Skills

TCP/IP

Routing

Switching

DNS

DHCP

VPNs

Firewalls

VLANs

NAT

Network segmentation

Job description

We are looking for an experienced Senior IT Network Engineer to own and support Spire's corporate and back-office network environment.

Reporting to the Global IT Director, this is a hands‑on role with primary responsibility for the design, implementation, operation, reliability, and lifecycle management of the corporate network. You will own the networking that supports Spire's offices, remote users, corporate services, and back‑office systems, while working closely with Security, Infrastructure, Facilities, and other technical teams.

The role includes responsibility for corporate routing, firewalls, VPN and remote access, office‑to‑office connectivity, DNS, wireless networking, network authentication, and related network infrastructure. You will also help modernize legacy and bespoke network services, improve resiliency, and reduce operational dependency on individual subject‑matter experts.

We are looking for someone who is proactive, self‑directed, and comfortable owning complex technical problems from architecture through implementation and ongoing operation. The right person will combine strong network‑engineering fundamentals with disciplined operational practices, including documentation, change management, monitoring, lifecycle management, and follow‑through.

Role & 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 difficult problems involving routing, VPNs, firewalls, DNS, authentication, certificates, wireless networking, cloud connectivity, and interdependent network services.
• Partner closely 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 to identify 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 in partnership 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.
• Proactively 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.

Basic Qualifications

• 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 firewa