PLC Engineering Team Lead

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

At LiquidStack, we're redefining what's possible in the data center world. As a global leader in advanced liquid cooling solutions, we're powering the future of AI, edge computing, and high-performance systems. Our team is growing, and we're looking for skilled professionals who want to be part of something innovative and impactful.

About LiquidStack

About LiquidStack & the Team LiquidStack is the established leader in liquid cooling for data center, HPC, and AI workloads, with manufacturing, R&D, and headquarters in Carrollton, Texas and a longstanding engineering presence in Hong Kong. As part of Trane Technologies, we are scaling our US-based engineering capability to augment our Hong Kong team. The new Texas engineering team will focus on the design, development, and delivery of large Coolant Distribution Units (CDUs) and skidded direct-to-chip platforms - including our GigaModular™ CDU family - for hyperscale, colocation, and AI infrastructure customers. The team will own manufacturability, ETL / CSA / CE / NRTL compliance, and customer-facing engineering for these product families, working in close collaboration with the Hong Kong team on shared architecture and component engineering. The PLC team owns the controls software and HMI for skidded CDUs - including resilient management control for the GigaModular™ family - covering PLC programming, BMS integration, and customer-visible control behavior.

Role Overview

Senior individual contributor and technical authority on PLC controls.

Additional Responsibilities

• 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.

Key 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.

Required Qualifications

• Bachelor's degree in Electrical Engineering, Controls Engineering, Computer Engineering, or related.
• 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.

Why Join Us?

• Competitive pay with opportunities for overtime
• Consistent day-shift schedule
• Paid time off, holidays, and great benefits
• Be part of an industry-disrupting company with room to grow
• Work on innovative technologies in a collaborative, supportive environment