Senior Controls Engineer - Industrial Automation Software

Reference: 2105_1788220980

Senior Controls Engineer - Industrial Automation Software

Location: Renton, WA
Work Model: Hybrid
Experience: 5+ Years

About the Role

We are hiring a Senior Controls Engineer with strong software development experience to support advanced automated material-handling and machine-control systems.

The successful candidate will develop reusable PLC software and integrate control applications with real-world industrial equipment. Strong experience with Beckhoff TwinCAT or CODESYS, Structured Text, EtherCAT, and state-machine design is highly valued.

What You'll Do

  • Develop and maintain PLC/control software using CODESYS V3 or Beckhoff TwinCAT.
  • Write structured, reusable IEC 61131-3 Structured Text code.
  • Build reusable Function Blocks and control libraries.
  • Develop state-machine-based machine sequences.
  • Implement equipment startup, shutdown, fault, recovery, and safety logic.
  • Apply object-oriented design principles to control software.
  • Integrate motors, drives, sensors, photo-eyes, actuators, and other field devices.
  • Configure and troubleshoot EtherCAT networks.
  • Test control software in engineering and lab environments.
  • Analyze electrical schematics and control drawings.
  • Troubleshoot hardware/software integration issues.
  • Support commissioning and deployment activities.
  • Work with Git and modern software-development practices.

Required Qualifications

  • Bachelor's degree in Controls, Electrical, Computer, Mechanical, Mechatronics Engineering, Computer Science, or related discipline.
  • 5+ years of industrial controls or automation software experience.
  • CODESYS V3 or Beckhoff TwinCAT.
  • Strong IEC 61131-3 Structured Text programming.
  • State-machine and CASE-statement programming experience.
  • PLC Function Block development.
  • Object-oriented programming concepts.
  • EtherCAT communication experience.
  • Industrial automation hardware integration.
  • Ability to read electrical schematics.
  • Experience with Git/source control.

Preferred Qualifications

  • Conveyor and sortation systems.
  • Material-handling or warehouse automation.
  • High-speed automation.
  • IO-Link.
  • Linux Industrial PCs.
  • JSON configuration.
  • Commissioning experience.
  • C++ or Rust experience.

GCS is acting as an Employment Business in relation to this vacancy.

COMPETITIVE SALARY
Added 01/09/2026
Reference: 2105_1788220980

Senior Controls Engineer - Industrial Automation Software

Renton, Washington, United States of America Contract Controls & Automation

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