Controls Engineer

Responsibilities

• Develop and test template PLC programs for standard mechanical equipment including chiller skids, fan wall units, and CRAHs
• Write portable code across mixed PLC hardware including Siemens, Codesys, and virtualized PLCs
• Develop and tune sequences of operations (SOO) with controls and mechanical teams
• Install and wire PLCs and sensors in a lab environment to validate programs
• Debug programs against real IO and failure conditions on the bench to ensure seamless field commissioning

Requirements

• Experience writing and testing PLC programs for mechanical equipment (chillers, air handlers, pumps, etc.) on real hardware
• Proficiency in multiple PLC platforms such as Siemens, Codesys, or virtualized environments
• Ability to translate sequences of operations into working PLC code
• Hands-on experience wiring PLCs, IO, and sensors and troubleshooting physical layer faults
• Ability to write structured, reusable, and readable code
• Experience testing against failure modes and edge cases in a lab setting

Preferred Qualifications

• Knowledge of data center mechanical systems (chiller plants, CRAH/CRAC, fan wall units)
• Proficiency in Structured Text and IEC 61131-3 languages
• Experience with BMS or SCADA integration over BACnet and Modbus
• Experience with hardware-in-the-loop or virtualized PLC testing

About the Company

Fluidstack is focused on delivering massive-scale compute infrastructure for AI by designing, building, and operating data centers at high velocity.