Senior Motion Control Software Engineer

Southwestern Industries • Rancho Dominguez, CA

3d • $150,000 - $175,000 • Onsite

About The Position

We are seeking a hands-on Senior Real-Time Motion Control Software Engineer to take ownership of our motion control and real-time slave system. This is a deeply technical roll ideal for an engineer who enjoys solving real-world control problems at both the software and machine level. Role focus: ~60% real-time motion/slave system ~40% Windows-side C/C++ and Win32 integration and PLC logic You will work directly at CNC machines to diagnose, tune, and validate motion performance.

Requirements

• BS or MS in Electrical Engineering, Computer Science, Mechanical Engineering, or related field
• 10+ years of professional software development experience
• Strong C programming experience in real-time systems
• Strong C++ experience in Windows/native environments
• Experience working in deterministic or near real-time systems
• Solid understanding of:
• Thread prioritization and concurrency
• Core affinity and real-time scheduling
• Interrupt-level timing constraints
• Strong control theory background, including:
• PID control
• Closed-loop feedback systems
• Step response analysis
• Feed-forward techniques
• Ability to diagnose servo instability on real hardware
• Comfortable working hands-on with CNC machines

Nice To Haves

• Experience with RTX64, IntervalZero, or similar RTOS platforms
• Background in CNC, robotics, aerospace, disk drives, semiconductor equipment, or industrial automation
• Familiarity with EtherCAT/TCP/UDP networking and/or industrial communications systems
• Experience migrating legacy real-time platforms
• Comfortable working with Visual Studio

Responsibilities

• Real-Time Motion Control
• Own and maintain real-time motion control software written in C
• Support and ultimately own the RTX64 real-time implementation
• Manage deterministic scheduling, thread priorities, and core affinity
• Diagnose and resolve latency-sensitive and race-condition issues
• Tune PID loops and feed-forward control
• Analyze step response and diagnose servo instability on physical machines
• Validate motion behavior hands-on at CNC machines
• PLC & Machine Logic
• Maintain and extend our proprietary PLC system (written in C/C++)
• Develop new PLC logic to support expanded I/O and new machine features
• Debug field I/O and machine sequencing issues
• Platform Modernization
• Support migration from Windows CE to Windows 11 IoT + RTX64
• Refactor and improve motion-related code where appropriate
• Ensure long-term stability and maintainability of the motion platform

Benefits

• competitive compensation
• health and disability insurance
• paid vacation
• 401(k) retirement plan

What This Job Offers

• Job Type: Full-time
• Career Level: Senior