Test Engineering Intern (Spring)

Louisville, ColoradointernshipOn Site

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entry

$48k–$77k

H1B: no

H3x Technologies Test Engineering Intern at H3X Technologies contributing to electromagnetic design and analysis of electric motors. Responsible for building finite element models and developing Python-based tooling for simulation and test data correlation.

Responsibilities

Our team at H3X is hiring an intern to work alongside our design engineering team on real hardware programs. This is a hands-on role: you will contribute directly to electromagnetic design, analysis, and the tooling that supports our characterization and optimization workflows. You will see your work flow from simulation through to physical test data. We are looking for a full time Spring Intern, but also have availability for Summer 2027 and extended Co-Op positions.
Build and run finite element models to predict motor performance, including torque, losses, efficiency mapping, and thermal behavior
Perform electrical machine sizing and preliminary design trades to evaluate topology and geometry candidates against performance and packaging targets
Develop and maintain Python-based analysis and post-processing tooling for simulation exports and bench test data
Support multi-physics optimization studies spanning electromagnetic, thermal, and structural domains
Correlate simulation results against dynamometer and instrumentation data, and help close the loop between model and measurement
Document methods and results clearly so that the team can build on your work
What we are looking for:
Currently pursuing a BS, MS, or PhD in Electrical Engineering, Mechanical Engineering, or a related field
Coursework or project experience in electric machines and electromagnetics
Experience with FEA for electromagnetic analysis (JMAG strongly preferred; Ansys Maxwell, MotorCAD, or similar is acceptable)
Working knowledge of electrical machine sizing fundamentals, magnetic and electric loading, winding design, and the relationships between geometry and performance

Qualification

Conceptualize test equipment designsDesign and AnalysisPrototype and ManufacturingCompile complete Bills of MaterialsTesting and Validation

Required

Establish and document requirements to fulfill testing equipment design needs
Conceptualize test equipment designs
Gather and consolidate requirements for R&D test suites in the form of test plans
Design and Analysis
Design parts and assemblies utilizing SolidWorks
Prototype and Manufacturing
Compile complete Bills of Materials
Provide technical supply chain support for sourcing hardware
Work with technicians and test engineers to build initial prototypes
Test prototype equipment for verification
Testing and Validation
Create a test plan and checklist to validate product design targets

Preferred

Familiarity with permanent magnet synchronous machines and traction-class motor design
Hands-on lab or test experience (dynamometer testing, power measurement, instrumentation)
Understanding of power electronics and three-phase systems
Familiarity with CAD tools (Solidworks preferred)
Familiarity with drawing creation & tolerancing