OT Network Engineer

We are seeking an experienced OT Network Engineer to serve as the primary boots-on-the-ground technical resource for our Operations Technology (OT) Network team. Reporting directly to the OT Network Manager, this role is responsible for executing the day-to-day operational work that keeps our large-scale OT LAN/WAN running across more than 50 building locations and over 6,000 diverse endpoints. Where the OT Network Manager sets direction and owns strategic decisions, the Engineer owns execution—handling field work, managing the rhythm of vendor relationships, keeping documentation current, driving projects forward, and ensuring nothing falls through the cracks. This is an active, hands-on role that requires someone equally comfortable overseeing cable pulls in a technology room, contributing on a vendor coordination call, and updating network documentation at their desk. The ideal candidate is a self-starter who takes initiative, operates independently within defined priorities, and brings a level of field experience and technical depth that allows them to represent the Manager’s direction confidently when working with building staff, contractors, and third-party vendors. Key Responsibilities Day-to-Day Network Operations Serve as the hands-on operator of the OT network—physically and remotely monitoring infrastructure health across all properties, including switches, routers, firewalls, and access points via the Meraki dashboard. Respond to network outages and performance issues as the first responder on the ground; troubleshoot, coordinate vendor response, and escalate to the Manager with full situational detail. Perform scheduled and as-needed maintenance on network appliances, including firmware updates, configuration changes, and patching—executing work directed by the Manager. Inspect and document UPS health, runtime, and load capacity for critical network and OT devices at each property; flag issues and coordinate remediation. Conduct periodic on-site and remote network audits to validate configurations, enforce naming conventions, and identify issues for the Manager’s review. Function as the day-to-day point of contact for the approximately 50 vendors and contractors whose devices reside on the OT network, including BMS, security, lighting, elevator, and energy management vendors. Manage vendor access to the OT network: track access rights, enforce access schedules, and ensure all on-site activity is consistent with established policies and the Manager’s direction. Serve as the primary contact for ISPs on IoT network connections; monitor uptime and coordinate with contractors in the field to mitigate outages. Manage low voltage cabling vendors on a per-building basis: maintain vendor lists, accompany or coordinate cabling work, review test results, and document all cable routes. Build and sustain working relationships with all connected contractors; keep contact lists complete and up to date. Gather vendor proposals for low voltage wiring, hardware, and services as directed; provide the Manager with organized summaries and recommendations. Documentation & Standards Maintain comprehensive and current OT network documentation- a “bible” of the OT network: topology diagrams, device inventories, IP addressing, VLAN assignments, connectivity details, and cabling records—as the team’s primary documentation owner. Build and keep current a “Wired Score” document for each property, providing building operations and leasing teams with essential network and connectivity information. Own the service ticket lifecycle: open, track, update, and close tickets with thorough documentation at every stage. Ensure all field work, configuration changes, and vendor activity is captured in documentation promptly and accurately. Device Onboarding & Access Management Serve as the hands-on point of contact for integrating new devices and services onto the OT network, coordinating directly with vendors, building staff, and IT under the Manager’s guidance. Process the “requested access” queue for the OT network; review device requests, conduct initial vetting, and escalate approvals or rejections to the Manager with supporting documentation. Execute onboarding tasks including VLAN assignments, IP addressing, port configurations, and coordination of vulnerability assessments with appropriate internal or vendor partners. Liaise with IT and corporate IT to implement router, firewall, switch, and port settings required for new and existing device integrations. Cybersecurity Execution Operate the day-to-day functions of the cybersecurity and network management tool stack under the direction of the Manager, including Forescout NAC, Blackpoint MDR, ThreatLocker, WSUS, Altiris, and GoverLAN. Carry out security policies and procedures in the field and across the network as established by the Manager, CIO, and corporate cybersecurity team. Report findings from audits, vendor activity, and field observations to the Manager; flag anomalies and potential threats for escalation. Research and document hardening opportunities for network appliances, servers, and PCs; present findings to the Manager with recommended actions. Support periodic vulnerability assessments and security audits as directed. Project Support & Delivery Execute OT network projects on the ground—coordinating schedules, managing vendor activities, tracking tasks, and keeping the Manager informed of progress, risks, and blockers. Serve as the on-site project representative during infrastructure deployments, cabling work, device installations, and software patching and security updates ensuring work is completed to spec. Run testing of new IoT applications, network configurations, and hardware in the lab environment prior to production rollout; document results and surface issues to the Manager. Assist the Manager in gathering budget data for hardware, software, and maintenance fees; communicate relevant cost information to property teams as directed. Participate in evaluations of new hardware and applications for the network and for connected stakeholder functions (e.g., Sustainability, Operations, Security). Qualifications & Experience Required Minimum of 5–8 years of progressive IT/OT networking experience in a complex, multi-site environment. Minimum of 1–3 years of hands-on experience with OT or building operations networks, including direct work with diverse vendor ecosystems in the field. Strong working knowledge of Cisco Meraki infrastructure and the Meraki dashboard for configuration, monitoring, and troubleshooting. Solid command of networking fundamentals: TCP/IP, routing, switching, VLANs, VPNs, QoS, and network segmentation. Proven experience with Windows installation, patching, upgrading and troubleshooting various PC and Server operating systems. Hands-on experience with cybersecurity tools relevant to OT environments, including Forescout, Blackpoint, ThreatLocker, WSUS, Altiris, or equivalent platforms. Demonstrated experience managing vendor relationships and coordinating contractor activity in a technical environment. Strong documentation habits—able to create, maintain, and keep current technical records, SOPs, diagrams, and ticket histories. Clear communicator with vendors, building operators, and internal stakeholders; able to represent the Manager’s direction in the field with confidence. Highly self-directed with strong organizational skills; able to manage multiple concurrent priorities without close supervision. Physically able and willing to perform field work in technology rooms, back-of-house areas, and building operations environments. Bachelor’s degree in Information Technology, Computer Science, Electrical Engineering, or equivalent technical discipline; equivalent field experience considered. Preferred CCNA certification. Familiarity with BACnet/IP and other OT/building automation protocols. Experience with IoT device management platforms (e.g., SecuriThings or equivalent). Commercial real estate or property management experience. Experience working within a structured chain of command in a regulated or high-security environment. Key Attributes A hands-on operator who takes ownership of execution and follows through without needing to be chased. Detail-oriented and disciplined about documentation—understands that accurate records are as important as the work itself. Field-ready and comfortable in the physical environments where the network actually lives. A reliable representative of the Manager in the field—vendors, building staff, and contractors trust and respond to them. Proactive about surfacing issues, not waiting until something breaks to flag a problem. Flexible and available to support scheduled maintenance and unplanned outages outside standard business hours when required. #J-18808-Ljbffr