OT Infrastructure Engineer

Careers at Keel    Keel Infrastructure is a publicly traded energy and digital infrastructure company that develops and owns data centers and power assets across North America.   At Keel, you’re not just joining a company, you’re helping build the infrastructure behind the future of compute.   Why Keel   We’re at the intersection of energy and technology, two industries transforming in real time.   The work is complex. The pace is fast. The impact is real.   You’ll be part of a team that values:   Ownership — we take responsibility and follow through   Collaboration — we work across teams, functions, and borders   Curiosity — we ask questions and keep learning   Endurance — we build for the long term     What It Feels Like to Work Here   Fast-moving, high-growth, and hands-on Smart, driven people solving real challengestogether   Work that directly supports AI and next-generation infrastructure Room to grow, stretch, and take on more What We Offer   Competitive salary, bonusand equity opportunities   Comprehensive health and wellness benefits Retirement savings with company contribution Employee referral program We are currently looking for an OT Infrastructure Engineer to join our team Compensation Expected Salary (NYC): $160,000-$250,000 USD Position Overview The OT Infrastructure Engineer is responsible for the design, deployment, and operational integrity of Operational Technology (OT) systems across Keel Infrastructure’s global portfolio of data centers and energy infrastructure. Reporting to the Director of Global Network Infrastructure, this is a hands-on engineering role requiring deep expertise across industrial control systems, facility automation, and OT networking – with direct accountability for the reliability and security of the OT infrastructure underpinning data center operations worldwide. The OT Infrastructure Engineer owns the full lifecycle of the OT systems – from architecture and engineering design through commissioning, steady-state operations, and lifecycle refresh – across SCADA platforms, distributed control systems (DCS), programmable logic controllers (PLC/RTU), building management systems (BMS), power monitoring, and facility automation infrastructure. This role works in close coordination with the Infrastructure Operations Center (IOC), IT infrastructure teams, and data center facilities to ensure full OT operational visibility and robust IT/OT integration across all sites. Key Responsibilities OT Systems Engineering & Lifecycle Own the architecture, design, and full lifecycle of OT systems across all Keel’s data center and energy infrastructure sites – including SCADA platforms, DCS, PLC/RTU controllers, HMI systems, historian platforms, BMS, energy management systems (EMS), and power monitoring infrastructure. Design, configure, and validate control logic, I/O mappings, and communication architectures for data center facility automation systems – including analog/digital I/O, interlock logic, alarm management frameworks, and setpoint management across multi-site deployments. Manage OT communication protocol stacks and integration layers – including Modbus, TCP/RTU, DNP3, BACnet/IP, PROFINET, IEC 61850, OPC-UA, and MQTT – ensuring reliable, well-documented data flows between field devices, controllers, and supervisory layers. Engineer, configure, and commission OT networking infrastructure – including industrial Ethernet switches (managed L2/L3), ring redundancy topologies (HSR/PRP/RSTP), serial communication converters, and OT DMZ architecture at the IT/OT boundary. Perform capacity planning and performance analysis for OT infrastructure – monitoring historian tag counts, controller CPU/memory utilization, polling cycle times, and OT network bandwith to ensure headroom is maintained ahead of data center expansion. Maintain OT configuration management standards – including version-controlled PLC/SCADA project backups, firmware revision logs, change history records, and golden-image management for all programmable field devices. Manage the full OT asset lifecycle – from procurement and factory acceptance testing (FAT) through site acceptance testing (SAT), commissioning, and end-of-life decommission – maintain an accurate OT asset register and CMDB. Data Center Facility Automation & Power Systems Own the integration of BMS and EMS platforms with datacenter power infrastructure – including UPS systems, PDUs, automatic transfer switches (ATS), generators, and utility metering – ensuring accurate real-time monitoring, alarm coverage, and control of critical power paths. Manage cooling and environmental control system integration – including CRAC/CRAH units, chillers, cooling towers, and precision air handling – ensuring automation logic aligns with data center thermal management requirements and PUE/energy efficiency targets. Configure and maintain power monitoring systems – including multi-circuit power meters, CT/PT instrumentation, and energy dashboards – ensuring data accuracy, alarm coverage, and integration with data center infrastructure management (DCIM) platforms. Lead alarm rationalization processes across all facility automation systems – reviewing alarm priority structures, suppression logic, deadbands, and nuisance alarm elimination to ensure operators receive actionable, prioritized alarms. Define and maintain OT data feed requirements into the IOC – including telemetry specifications, tag naming conventions, threshold logic, and escalation paths for facility power, cooling, and environmental parameters. OT Cybersecurity & Compliance Own and enforce OT cybersecurity posture across all data center sites – implementing network segmentation in alignment with IEC 62443 zone and conduit models and Purdue Model architecture, including OT DMZ design, unidirectional security gateways where required, and jump host/bastion controls for all OT syst