PLC Controls Engineer

About the role

This PLC Controls Engineer role focuses on developing and deploying control systems for large-scale cooling and facility infrastructure in a hybrid project environment. You will begin working remotely to design and program PLC-based control systems, then transition onsite to Haskell, TX to support installation, commissioning, and system startup.

Responsibilities

• Develop PLC programs using Allen-Bradley Studio 5000 on the Logix platform during the remote engineering phase.
• Design and implement control logic for mechanical and cooling systems, including air handling units (AHU/ATU), variable air volume (VAV) systems, chillers and chilled water systems, exhaust fans and ventilation systems, and dampers, valves, and airflow control devices.
• Translate sequences of operation into clean, maintainable, and well-documented control logic that supports reliable system performance.
• Collaborate closely with cross-functional engineering and project teams to ensure control strategies align with overall system requirements and design intent.
• Support installation and startup of control systems onsite in Haskell, TX, working in field environments alongside technicians, engineers, and contractors.
• Perform I/O checkout and loop testing to verify proper wiring, device operation, and control system functionality.
• Debug PLC code and perform real-time modifications during commissioning to resolve issues and fine-tune system behavior.
• Conduct functional testing and system tuning to validate performance of HVAC and mechanical control systems.
• Troubleshoot issues across controls, instrumentation, and communications networks, identifying root causes and implementing corrective actions.
• Partner with field teams and commissioning stakeholders during system bring-up to ensure a smooth transition from construction to operational status.
• Optimize system performance after initial startup by adjusting control parameters, refining sequences, and addressing any operational concerns.

Requirements

• At least 3 years of experience in PLC programming or controls engineering.
• Strong hands-on experience with Allen-Bradley PLCs, including Studio 5000 and Logix platforms such as ControlLogix and CompactLogix.
• Proficiency in ladder logic development, troubleshooting, and modification in live systems.
• Experience working with HVAC, mechanical, or facility-related control systems, particularly for cooling and air handling applications.
• Prior involvement in commissioning activities, including system bring-up and validation.
• Experience providing startup support for control systems in field environments.
• Field troubleshooting experience across control systems, instrumentation, and communication networks.
• Practical knowledge of automation and controls engineering principles.
• Experience working with HMI systems associated with Allen-Bradley or similar platforms.