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Today

Lead Motor Engineer

Klein Tools Mansfield, TX

Mansfield, TX

Today

Full time Electrical Engineering Battery Systems Engineering Bldc

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Job Description

As Lead Motor Engineer, you will serve as Klein Tools’ primary technical authority for high-current BLDC and DC motor-drive systems supporting lithium-ion battery-powered products. Based onsite in Mansfield, TX, you will lead motor architecture and the end-to-end development path from control algorithms and power electronics through validation and production readiness for global programs.

Key Responsibilities

Provide architecture and technical direction for high-current BLDC and DC motor-drive systems.
Define targets across torque, speed, position, power, efficiency, thermal behavior, acoustic output, duty cycle, and life.
Own system integration of motors with lithium-ion batteries, embedded controls, gearing, and mechanical loads.
Select and optimize motor architectures including BLDC, brushed DC, and permanent-magnet synchronous motor designs.
Evaluate winding topology and key electrical characteristics such as turns, wire gauge, resistance, inductance, pole count, back-EMF, Kt, and Kv.
Develop and tune six-step commutation, FOC, SVPWM, and control loops for current, torque, speed, or position.
Develop or direct embedded C/C++ firmware for motor control using STM32, Arm, DSP, or similar motor-control platforms.
Design and validate three-phase inverter hardware including MOSFET stages, gate drivers, sensing, PWM, and PCB layouts.
Define protection strategies for overcurrent, short circuit, shoot-through, voltage faults, heat, stall, and locked rotor conditions.
Build prototype controller boards, inverter stages, sensing circuits, and test fixtures.
Lead controller and inverter bring-up, debugging, characterization, and design validation.

Required Qualifications

Bachelor’s degree in Electrical, Mechanical, Electromechanical, Mechatronics, or a related engineering field, with 8 or more years of relevant experience.
At least 5 years in BLDC or related motor-drive development, including lithium-ion battery-powered systems operating from 5 A to 150 A.
Demonstrated system-level expertise spanning motor hardware, power electronics, control algorithms, and embedded firmware.
Knowledge of motor construction and windings, magnetic design, six-step commutation, FOC, SVPWM, sensorless or position feedback, three-phase inverters, gate drivers, current sensing, PWM, dead time, grounding, thermal management, protection, and high-current PCB layout.
Ability to develop, review, or direct embedded C/C++ firmware using STM32, Arm Cortex, DSP, or comparable platforms.
Hands-on experience using oscilloscopes, differential and current probes, power and logic analyzers, electronic loads, and dynamometers.
Ability to interpret waveforms and test data to troubleshoot hardware, firmware, EMI/EMC, thermal, communication, and reliability issues.

Preferred Qualifications

Experience with simulation, HIL testing, supplier development, and production launch in China.
Mandarin Chinese and English fluency.

Technologies

BLDC, FOC, SVPWM, six-step commutation
STM32, Arm, Arm Cortex, DSP
C, C++
MOSFET, PWM, HIL testing
Oscilloscopes, differential and current probes, power analyzers, logic analyzers, electronic loads, dynamometers
EMI/EMC

Benefits

Paid Vacations & Holidays
Profit Sharing & Matching 401(k)
Health Insurance (Medical, Vision, & Dental)
Discounts on Klein Tools products
Education and Professional Development Assistance

Company Focus Areas

Quality
Customer Obsession
Innovation
Ownership
Teamwork

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2mo ago

Motor Drive Engineer

The Judge Group Rolling Meadows, IL

Rolling Meadows, IL

2mo ago Closed

$65 - $97/hr Contract Electrical Engineering Bldc Circuit Design

This position is no longer accepting applications (closed Sep 1, 2026).

Job Description

The Judge Group invites experienced engineers to apply for a Motor Drive Engineer role in Rolling Meadows, Illinois. This onsite, long-term contract opportunity offers a competitive hourly rate of $65 to $97 and centers on designing, integrating, and testing advanced motor control systems for aerospace and defense applications. You will work alongside multidisciplinary teams to optimize motor drive performance, power electronics, and digital control while pursuing a potential conversion based on business needs.

What you will do

Design, develop, and deploy motor control systems for advanced aerospace and defense programs.
Assess and integrate three-phase BLDC motors, motor drives, and digital control solutions.
Create and analyze power electronics designs that support motor drive and motion control applications.
Develop and verify motor control algorithms using MATLAB, Simulink, and circuit simulation tools.
Model, simulate, and evaluate the performance of motor drive systems and their control architectures.
Assist with hardware integration, lab testing, debugging, and system verification activities.
Conduct trade studies and technical evaluations to balance performance, reliability, and cost.
Develop and validate embedded and digital controllers for motor drive applications.
Collaborate with systems, software, mechanical, and electrical engineering teams to deliver integrated solutions.
Evaluate system-level requirements and assess how motor drive performance affects the broader platform.
Support EMI/EMC compliance efforts and ensure designs meet customer and regulatory requirements.
Contribute to multi-axis servo control and stabilization system development where applicable.
Document designs, test plans, procedures, and engineering data throughout the lifecycle.
Assist with customer reviews, technical presentations, and design reviews.

Requirements

Bachelor of Science in Electrical Engineering or a closely related field.
Minimum of eight years of hands-on motor control, motor drive, or power electronics experience.
Experience selecting and controlling three-phase Brushless DC motors (BLDC).
Strong background in power electronics design and development.
Proficiency with MATLAB, Simulink, and circuit simulators such as SPICE or Saber.
Deep understanding of motor control, power conversion, and electromechanical integration.
Proven ability to collaborate effectively in a multidisciplinary, team-based engineering environment.
Strong analytical, troubleshooting, problem-solving, and communication skills.
Ability to adapt to changing priorities and support multiple engineering efforts simultaneously.
U.S. Citizenship is required.
Ability to obtain and maintain at least a Secret Security Clearance and any additional customer-required clearances prior to start.

Technologies

MATLAB, Simulink, SPICE, Saber
Code Composer Studio
Texas Instruments C2000 microcontrollers
Gallium Nitride (GaN) FET technology

Additional details

Position Title: Motor Drive Engineer
Location: Rolling Meadows, Illinois
Employment Type: Long-Term Contract with Conversion Potential
Schedule: Onsite

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