We are seeking experienced CODESYS Controls Developers to support a large-scale, greenfield industrial automation program within the material handling and logistics industry. This initiative is focused on building next-generation control systems for high-throughput environments, standardizing how automation systems are designed and deployed across multiple facilities.
This is a development-focused role, not maintenance or support. The architecture is defined, and the team requires strong engineers who can implement high-quality control logic using CODESYS and IEC 61131-3 standards.
What You'll Be Doing
- Develop CODESYS-based machine control logic using Structured Text and Function Blocks
- Build modular, reusable device libraries for motors, drives, sensors, actuators, and industrial equipment
- Assemble control applications for conveyance and material flow systems (merges, diverts, sortation, etc.)
- Integrate industrial devices using protocols such as EtherCAT, EtherNet/IP, and Profinet
- Work hands-on with hardware in a lab environment to validate control logic against real systems
- Support testing, debugging, and production hardening of control software
- Create documentation, runbooks, and technical artifacts for downstream deployment teams
- Assist with early-stage deployment validation before large-scale rollout
Required Skills
- 5+ years of machine control development using CODESYS (required)
- Strong proficiency in IEC 61131-3 (Structured Text, Function Block)
- Experience building modular control logic and reusable libraries
- Hands-on experience integrating motors, drives, sensors, and industrial devices
- Experience with industrial communication protocols such as EtherCAT, EtherNet/IP, or Profinet
- Background in material handling, conveyance, packaging, or industrial automation systems
- Familiarity with Linux-based industrial PCs (IPC environments)
- Experience with version control (Git) and structured development practices
- Willingness to travel for on-site lab work and early deployment support
Preferred Experience
- Experience developing device abstraction layers or hardware interface libraries
- Background in conveyor systems, sortation, or logistics automation
- Experience working in high-throughput or distributed automation environments
- Familiarity with legacy PLC systems (Allen-Bradley or similar)
- Scripting experience (Python or similar) for automation or testing
GCS is acting as an Employment Business in relation to this vacancy.
CODESYS Controls Developer
Bellevue
Contract
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