Senior OT Infrastructure / Automation & Controls Engineer

Key Responsibilities

• Own the architecture, design, and full lifecycle of OT systems across several data centers and energy infrastructure sites – including SCADA platforms, DCS, PLC/RTU controllers, HMI systems, historian platforms, BMS, energy management systems, 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
• Ensure reliable, well-documented data flows between field devices, controllers, and supervisory layers.
• Automation & Controls Engineering
• Own the integration of BMS and EMS platforms with datacenter power infrastructure – including UPS systems, PDUs, automatic transfer switches (ATS), generators, and utility metering.
• Operational Technology Infrastructure
• Manage OT networks and communications supporting controllers, field devices, and supervisory systems. Support industrial communication protocols such as Modbus, BACnet, OPC-UA, MQTT, and related technologies.
• Support compliance with applicable regulatory and industry frameworks – including NIST SP 800-82 and IEC 62443
• Monitor system performance and identify opportunities to improve reliability, resilience, and operational efficiency.
• Critical Facility Systems Support
• automation platforms associated with electrical, mechanical, and environmental infrastructure. Assist with integration and monitoring of power, cooling, and building systems.
• Partner with facilities teams to optimize operational performance and system availability.
• Participate in root cause analysis and corrective action efforts following operational incidents.
• Cybersecurity & Compliance
• Own and enforce OT cybersecurity stance 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 system access.

Qualifications

• 5+ years of experience in controls engineering, industrial automation, operational technology, or related disciplines.
• Proven experience in data center, colocation, energy, utilities, or equivalent critical infrastructure environments operating on a 24/7 basis.
• Deep hands-on expertise across OT/ICS platforms – SCADA, DCS, PLC programming (IEC 61131-3: Ladder, FBD, Structured Text), HMI configuration, and historian platforms.
• Working knowledge of OT cybersecurity frameworks – IEC62443, NIST SP 800-82
• Experience implementing security controls in live control system environments.
• Experience with data center facility power and cooling systems (UPS, generators, ATS, CRAC/CRAH, PDUs) – and their integration and power monitoring platforms.
• Relevant controls or OT certification: ISA Certified Control Systems Technician (CCST), ISA Certified Automation Professional (CAP), or equivalent.