Senior PLC Controls Lead – Data Center & AI Infrastructure

LiquidStack

Carrollton (TX)

Hybrid

USD 120,000 - 180,000

Full time

14 days+

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Job summary

LiquidStack is hiring a Senior PLC Controls Engineer to lead the design, development, and delivery of PLC controls for CDU and skidded platforms. You will develop, test, and maintain PLC programs across major platforms (Allen-Bradley or Siemens) and design user interfaces for operator screens.

You will integrate with customer BMS and assist with field commissioning. You will own controls software architecture, set coding standards, and collaborate with our Hong Kong team on shared libraries.

Qualifications

Bachelor’s degree required in Electrical 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 for CDU and skidded platforms.
Design HMI screens and operator interfaces.
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.
Own controls software architecture across the CDU portfolio.
Establish coding standards, library structures, and review practices.
Lead customer-facing controls discussions and BMS integration design.
Mentor the PLC Engineer.