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Senior Motors Engineer

STS Technical Services

Brookfield, WI · Posted October 12, 2026

More in Wisconsin job market · Engineering jobs

About the job

STS Technical Services is hiring a Senior Motors Engineer in Brookfield, Wisconsin.

This role supports the design, development, testing and production of electric motor systems used in high-performance products. The Senior Motors Engineer will lead complex motor development projects, evaluate motor performance and thermal limits, investigate failures and help guide technical direction across engineering and manufacturing teams.

The ideal candidate combines strong electrical or mechanical engineering fundamentals with hands-on motor design, testing, simulation and manufacturing experience.

Position Overview

The Senior Motors Engineer will work with cross-functional engineering, global motor engineering and operations teams to develop and execute test plans that verify motor performance against project requirements.

This position will also support new motor designs, improve existing designs, analyze test failures and develop solutions that can be efficiently manufactured at scale.

Responsibilities

Lead the design, prototyping, testing and troubleshooting of motors for complex engineering projects

Develop and execute test regimens for motor components and assemblies

Support design verification and failure mode evaluation

Conduct hands-on testing of power tools and related products

Perform engineering simulations

Analyze test data and develop technical conclusions

Perform root cause analysis on motor test failures

Work with suppliers to develop component and product specifications

Ensure supplier specifications meet performance requirements and process capabilities

Develop an understanding of manufacturing processes that support high-volume motor and product production

Perform electromagnetic design changes to motor laminations

Improve existing motor designs based on performance requirements

Develop clean-sheet brushless DC motor designs

Optimize motor performance for specific product requirements

Communicate project progress, technical barriers, risks and opportunities across the organization

Develop work breakdown structures for assigned engineering activities

Drive projects toward established technical milestones

Schedule and facilitate technical meetings

Develop meeting agendas and document technical discussions

Prepare and deliver formal technical presentations

Maintain urgency around project schedules

Track project metrics and support accountability against project requirements

Provide technical leadership to junior engineers

Mentor, guide and coach developing engineers

Use oscilloscopes, power supplies, electronic loads and data acquisition systems

Independently track projects against established schedules and engineering processes

Design and qualify new solutions to applicable UL requirements

Support compliance with CEC, CE and ANSI standards

Qualifications

Bachelor of Science or Master of Science degree in Electrical Engineering, Mechanical Engineering or a related field

Five or more years of related design experience with a bachelor’s degree

Two or more years of related design experience with a master’s degree

Experience using CAD software

Competency using FEA tools

Strong understanding of brushless DC motor theory

Familiarity with brushed PMDC motors

Familiarity with universal motors

Familiarity with induction motors

Familiarity with switched reluctance motors

Understanding of motor controls

Understanding of battery technology

Knowledge of vibration and sound analysis

Understanding of motor assembly

Knowledge of motor component design and manufacturing

Understanding of factors that influence motor cost and durability

Ability to travel domestically and internationally approximately 10% of the time

Preferred Qualifications

Siemens NX experience

Benefits

Health insurance

Dental insurance

Vision insurance

401(k) savings plan

Education assistance

On-site wellness resources

Fitness center

On-site food and coffee service

About STS Technical Services

STS Technical Services is a Top 100 Staffing Firm that partners with leading aerospace, manufacturing, defense and industrial organizations across the United States. We connect skilled professionals with career opportunities where their experience can make an immediate impact.

Apply Today

If you have hands-on electric motor design experience and are comfortable leading motor development, testing, failure analysis and manufacturing support, apply today to join STS Technical Services as a Senior Motors Engineer in Brookfield, Wisconsin.

Equal Opportunity Employer

STS Technical Services is an equal opportunity employer.

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