Software Engineer

GCS Recruitment; Bellevue (WA); On-site; USD 140,000 - 200,000; Full time

Job summary

Amazon is seeking a hands-on Controls Software Engineer to design and deploy reusable control software for next‑generation warehouse automation systems. You will work with CODESYS V3 or TwinCAT, building state-machine based control logic and integrating hardware for scalable, high‑throughput environments.

The ideal candidate has strong structured text skills, OO PLC development experience, and 5+ years in production machine control.

Qualifications

• Strong CODESYS V3 or Beckhoff TwinCAT experience.
• Expert-level Structured Text programming.
• State machine architecture and machine sequencing expertise.
• Object-oriented PLC development experience.
• EtherCAT hardware integration experience.
• 5+ years building production machine control systems.

Responsibilities

• Design and deploy reusable control software using CODESYS V3 and TwinCAT.
• Develop robust state-machine based control logic and sequencing.
• Integrate real-world automation hardware and scale platform across a global network.

Skills

CODESYS V3

TwinCAT

Structured Text

State machine design

PLC development

EtherCAT

5+ years experience

Tools

Beckhoff TwinCAT

Job description

Senior Software Engineer - Industrial Controls (CODESYS/TwinCAT)

Location: Seattle/Bellevue, WA | Hybrid

Amazon is looking for a hands-on Controls Software Engineer to develop the software platform behind its next-generation warehouse automation systems.

In this role, you'll design and deploy reusable control software using CODESYS V3, develop robust state-machine based control logic, integrate real-world automation hardware, and help scale a modular platform across Amazon's global fulfillment network.

What We're Looking For:

• Strong CODESYS V3 or Beckhoff TwinCAT experience
• Expert-level Structured Text programming
• State machine architecture and machine sequencing expertise
• Object-oriented PLC development experience
• EtherCAT hardware integration experience
• 5+ years building production machine control systems

Bonus Experience:

• Conveyor, robotics, warehouse automation, or material handling systems
• IO-Link integration
• JSON/configuration-driven applications
• Electrical drawings and commissioning support

Ideal Candidate: A controls engineer who naturally thinks in state machines, understands industrial hardware, asks the right technical questions before coding, and can build scalable software for high-throughput automation environments.