Senior Motors Engineer
STS Technical Services
Brookfield, WI · Posted October 12, 2026
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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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