THE COMPANY: STACK INFRASTRUCTURE (STACK) provides digital infrastructure to scale the world’s most innovative companies. We are an award-winning industry leader in building, owning, and operating highly efficient, cost-effective wholesale, colocation, and cloud data centers. Each of our national facilities meets or exceeds the highest industry standards in all operational categories of availability, security, connectivity, and physical resilience. STACK offers the scale and geographic reach that rapidly growing hyperscale and enterprise companies need. The world runs on data. Data runs on STACK. THE POSITION: STACK is seeking a Controls Engineer to join our Technical Operations team and play a pivotal role in supporting the construction, operation, and maintenance of BMS and EPMS systems at our new data center facilities in New Mexico. The Controls Engineer will work directly with site operations, engineering, construction, commissioning teams, vendors, and internal technical stakeholders to ensure reliable, scalable, and secure controls performance across a large, mission-critical campus. KEY RESPONSIBILITIES: Develop a comprehensive understanding of mechanical, electrical, controls, and monitoring architectures, including chilled water plant controls, plant operation, electrical distribution monitoring, and campus-level system integration. Support the implementation, commissioning, operation, and optimization of PLC-based controls systems across mission-critical mechanical and electrical infrastructure. Maintain and troubleshoot Ignition front-end systems, including screens, tags, alarms, historian functions, user interfaces, integrations, and reporting. Support MQTT-based data movement and system integration and related edge or enterprise messaging infrastructure. Work with databases supporting controls, monitoring, alarming, reporting, analytics, and operational data workflows. Partner with site operations teams to troubleshoot controls-related events, perform root cause analysis, and support corrective actions for building automation, PLC, SCADA, and EPMS-related systems. Support integration and validation of power quality meters, including devices configured for continuous waveform monitoring, event capture, power quality analysis, and electrical system diagnostics. Collaborate with commissioning agents, contractors, vendors, and internal engineering teams to verify system performance, sequence execution, alarm behavior, trend collection, data integrity, and turnover documentation. Support site operations by reviewing control logic, plant staging, pumping sequences, valve control, temperature control, differential pressure strategies, and system performance. Assist with operational readiness, site acceptance testing, integrated systems testing, and turnover of controls and monitoring systems from construction to operations. Ensure proper metering, trending, and data collection to support operational reporting, energy efficiency, reliability tracking, and long-term optimization. Partner with IT, cybersecurity, network, and monitoring teams to support secure and reliable connectivity for OT systems, PLCs, SCADA servers, MQTT brokers, databases, and field devices. Provide technical support and training to site personnel on controls system functionality, alarm response, data interpretation, and troubleshooting procedures. Support standards development and continuous improvement efforts for controls architecture, PLC programming practices, Ignition development, data modeling, alarm management, and documentation. THE DETAILS: Location: Santa Teresa, New Mexico; On-site Compensation: $160,000 - $195,000 annually with 10% bonus potential Benefits: Healthcare, Dental, Vision, Life Insurance, Paid Time Off, Paid Leave Programs Travel: Up to 15% domestically Must be eligible to work in the United States Must pass comprehensive background screening MUST-HAVE QUALIFICATIONS: Bachelor’s degree in Engineering, Controls, Computer Science, or equivalent practical experience. 5+ years of experience with building automation, industrial controls, SCADA, PLCs, EPMS, or mission-critical facility control systems. Hands-on experience with Allen-Bradley PLCs, including PLC logic review, troubleshooting, field validation, and integration with supervisory systems. Experience with Ignition SCADA, including tag structures, alarm configuration, graphics, historian functions, scripting, reporting, and system integration. Strong understanding of mechanical systems, especially chilled water systems, chiller plants, pumping systems, heat rejection, and hydronic loops. Familiarity with electrical monitoring systems, power quality meters, and EPMS concepts in mission-critical environments. Experience with industrial communication protocols and integration methods, including some combination of EtherNet/IP, Modbus TCP, BACnet, SNMP, MQTT, and OPC UA. Ability to troubleshoot complex controls issues involving PLCs, SCADA, network connectivity, field devices, sensors, actuators, meters, and databases. Strong communication skills with the ability to explain technical issues to engineering, construction, operations, vendors, and non-technical stakeholders. Must be comfortable working in a high-stress, fast-paced mission-critical environment with shifting priorities. Must be willing to support off-hours troubleshooting, maintenance windows, emergency response, and critical operational events as needed. PREFERRED QUALIFICATIONS: Experience supporting hyperscale, semiconductor, industrial, utility, or other large-scale mission-critical campuses. Ignition certification or advanced Ignition development experience. Experience with enterprise MQTT broker platforms. Experience with SEL power quality meters and relays. Working knowledge of SQL databases, preferably PostgreSQL, for data collection, reporting, analytics, and controls system integration. Understanding of OT cybersecurity concepts, network segmentation, authentication, certificate management, and secure access practices. Compensation Range: $133,000.00 - $154,000.00 THIS MIGHT BE RIGHT FOR YOU IF: You are a strong communicator, you are persuasive and clear, blending analytics with experience in decision-making. You do not get flustered easily. You can juggle multiple priorities while balancing urgent requests with shifting timelines and deliverables. You are a team builder. You take the time to understand and develop the strengths of your resources while formulating long-term plans for the growth and success of the team. You are naturally curious and driven toward continual improvement. While you celebrate your successes, you take time to review and analyze campaigns for future learning. WHY STACK? We offer a competitive compensation package with strong benefits, including medical, dental, and vision insurance, a 401K program, flexible spending accounts – even a cell phone subsidy. We foster a culture of appreciation, including peer-to-peer recognition and rewards programs. Fun is part of our DNA, with events, game nights, happy hours, and barbecues. We’re growing – this is a great time to join and make an impact! STACK is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity and expression, age, national origin, mental or physical disability, genetic information, veteran status, or any other status protected by federal, state, or local law Note to external agencies: We are not accepting any blind submissions or resumes/cvs from recruitment agencies. Any candidates sent to STACK Infrastructure, Inc. will not be accepted or considered as a submission without a signed agreement in place. Fees will not be paid in the event a candidate submitted by a recruiter without an agreement in place is hired; such resumes will be deemed the sole property of STACK Infrastructure, Inc. At STACK Infrastructure, you can accelerate your career within the high-growth digital infrastructure industry by joining a team that empowers innovation and values dynamic collaboration. As a leading global developer and operator of data centers, STACK enables you to contribute to the digital foundation that fuels today’s most innovative companies. Here, your career growth is ignited by meaningful work that directly supports the technologies driving our world forward. With a culture rooted in inclusivity and growth, STACK invests in your future. Here, diverse perspectives are celebrated, and career development is central. Join us to be part of a team where your skills and ideas shape the future of digital infrastructure, building not just a job, but a lasting career with impact.

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