Senior PLC & Controls Engineer (CODESYS)

Amazon Inc.; Herndon (VA); On-site; USD 151,000 - 205,000; Full time

Benefits offered by this job

Health insurance

401(k) matching

Paid time off

Parental leave

Job summary

Amazon Inc. in Herndon is seeking a Senior Systems Development Engineer to design, deploy, and scale control systems software for AWS data center infrastructure.

You will work at the intersection of software development and physical infrastructure, crafting control logic for in-house mechanical controllers and occasionally traveling to field sites for validation. The role targets professionals with extensive PLC/controls experience, cross-functional collaboration, and a commitment to reliability

Qualifications

• 5+ years PLC-based control systems development with CODESYS.
• 4+ years of professional software development experience.
• 4+ years of designing or architecting innovative systems.
• 4+ years of IT or data center environment experience.
• 4+ years deploying and operating in Linux/Unix environments.

Responsibilities

• Design, develop, and maintain mechanical control software on the CODESYS PLC platform for AWS data center infrastructure.
• Develop and refine control logic, function blocks, and sequences of operations for varied sites.
• Perform triage, root-cause analysis, and remediation of control system issues.
• Support first-of-kind builds with on-site travel for real-time break/fix support.
• Collaborate with electrical controls, field engineering, and data center teams on next-gen controllers.
• Document control system designs, configurations, and sequences of operation.
• Participate in design reviews and improve controls development standards and tooling.
• Join on-call rotation to provide escalation support for critical issues.

Skills

Programming languages

Software design

IT/Data center experience

Linux/Unix

PLC with CODESYS

Tools

CODESYS platform

Modbus

BACnet

EtherCAT

IEC 61131-3

Job description

Amazon Inc. in Herndon is seeking a Senior Systems Development Engineer to design, deploy, and scale control systems software for AWS data center infrastructure.

You will work at the intersection of software development and physical infrastructure, crafting control logic for in-house mechanical controllers and occasionally traveling to field sites for validation. The role targets professionals with extensive PLC/controls experience, cross-functional collaboration, and a commitment to reliability