Senior PLC Controls Lead – Data Center Innovation

Socket.dev; Carrollton (TX); On-site; USD 120,000 - 150,000; Full time

Benefits offered by this job

Overtime opportunities

Day shift

Great benefits

Growth opportunities

Collaborative environment

Job summary

LiquidStack is seeking a senior PLC controls engineer to own controls software architecture across CDU portfolio, including PLC programming and HMI design in collaboration with our Hong Kong team.

You will design, test, and maintain PLC programs (Allen-Bradley, Siemens), implement BACnet/Modbus, and support integration with BMS and data center platforms while mentoring junior engineers.

Qualifications

• Bachelor's degree in Electrical Engineering, Controls Engineering, Computer Engineering, or related field.
• 10+ years of industrial PLC programming experience.
• Expert with at least one major platform (Allen-Bradley Studio 5000, Siemens TIA Portal, or similar).
• Strong HMI design experience (FactoryTalk, WinCC, Ignition, or equivalent).
• Deep familiarity with BACnet, Modbus, and data center BMS integration patterns.

Responsibilities

• Develop, test, and maintain PLC programs (Allen-Bradley, Siemens, or equivalent) for CDU and skidded platforms.
• Design HMI screens and operator interfaces.
• Implement industry-standard communication protocols: BACnet, Modbus TCP/RTU, SNMP, Redfish.
• Integrate with customer Building Management Systems (BMS) and data center management platforms.
• Support factory acceptance testing, site acceptance testing, and field commissioning.
• Maintain version control, change history, and release notes for controls software.
• Collaborate with the Hong Kong controls team on shared code libraries and standards.

Skills

PLC programming

HMI design

Industrial automation

Education

Bachelor's degree in Electrical Engineering

Tools

Allen-Bradley Studio 5000

Siemens TIA Portal

FactoryTalk

WinCC

Ignition

Job description

LiquidStack is seeking a senior PLC controls engineer to own controls software architecture across CDU portfolio, including PLC programming and HMI design in collaboration with our Hong Kong team.

You will design, test, and maintain PLC programs (Allen-Bradley, Siemens), implement BACnet/Modbus, and support integration with BMS and data center platforms while mentoring junior engineers.