Remote Robot Controls Engineer: Motion & Estimation

Rex.zone; United States; On-site; USD 110,000 - 160,000; Full time

Job summary

Rex.zone in the United States is seeking a Robot Controls Engineer to design and tune control algorithms that drive robotic behavior, including motion control, state estimation, and trajectory tracking. You will validate performance through simulation, hardware-in-the-loop testing, and on-robot experiments to ensure safe and repeatable operation.

The role emphasizes real-time constraints, sensor fusion, and integration with embedded systems, as well as rigorous testing plans.

Qualifications

• Mid-Senior experience in robot controls or control systems engineering.
• Strong fundamentals in control theory, robotics dynamics/kinematics, and state estimation.
• Proficiency in C/C++ and/or Python for controls implementation and tooling.
• Experience with real-time systems and performance profiling for control loops.
• Hands-on experience with sensors and actuators (encoders, IMUs, motors, servo drives).
• Familiarity with ROS/ROS2 or comparable robotics middleware.

Responsibilities

• Design, implement, and tune feedback controllers (PID; LQR/MPC where applicable).
• Develop trajectory generation and trajectory tracking pipelines.
• Build state estimation using sensor fusion and filtering (e.g., Kalman filters).
• Integrate controls with embedded and real-time constraints (latency, jitter, compute limits).
• Validate controller performance in simulation and on hardware using structured test plans.
• Collaborate on sensor/actuator integration, calibration, and bring-up.
• Define safety interlocks and fault-handling behaviors aligned with robotics safety requirements.
• Document control parameters, tuning procedures, and test results.

Skills

Robot controls

Control theory

Robotics dynamics/kinematics

State estimation

C/C++

Python

Real-time systems

ROS/ROS2

Sensors/actuators

Documentation

Job description

Rex.zone in the United States is seeking a Robot Controls Engineer to design and tune control algorithms that drive robotic behavior, including motion control, state estimation, and trajectory tracking. You will validate performance through simulation, hardware-in-the-loop testing, and on-robot experiments to ensure safe and repeatable operation.

The role emphasizes real-time constraints, sensor fusion, and integration with embedded systems, as well as rigorous testing plans.