Test Engineer Jobs in Milwaukee, WI (NOW HIRING)

As an Electrical Engineer III, your role will be primarily focused on supporting the testing, and validation of advanced battery products and battery systems. You will be responsible for testing complex electrical systems across battery cells, modules, packs, battery management systems, power electronics utilizing a variety of instrumentation and test equipment. You will work closely with design, controls, systems, manufacturing, and reliability teams to ensure battery systems meet electrical, functional, performance, safety, and durability requirements.

#LI-LB1 #LI-Onsite

You will do this by:

• Developing and executing electrical test and validation plans for battery cells, modules, packs, and battery systems.

• Translating system requirements and specifications into practical, measurable test cases and validation procedures.

• Defining test methods, instrumentation, data acquisition requirements, test fixtures, and test setups.

• Performing hands-on testing of battery and battery-system hardware in laboratory and test environments.

• Conducting functional, performance, characterization, environmental, durability, and abuse-related testing as appropriate for the product.

• Developing and executing test procedures for electrical, thermal, communications, protection, and BMS-related functions.

• Configuring and troubleshooting laboratory equipment, power supplies, electronic loads, battery cyclers, data acquisition systems, oscilloscopes, CAN tools, and other test equipment.

• Analyzing test data to identify trends, anomalies, failures, and opportunities for improvement.

• Leading electrical failure investigations and root-cause analysis, working collaboratively with design and systems engineers to identify and resolve issues.

• Developing automated test scripts, data-processing tools, or other engineering tools to improve test efficiency and repeatability.

• Establishing and maintaining test methods, procedures, equipment configurations, and validation documentation.

• Supporting correlation between laboratory, prototype, production, and field test results.

• Evaluating test results against requirements and providing clear technical recommendations and conclusions.

• Participating in design and engineering reviews from a testability, validation, and system-performance perspective.

• Identifying gaps in test coverage and recommend improvements to validation strategies.

• Supporting prototype builds, test readiness reviews, and hardware bring-up activities.

• Working with cross-functional teams to troubleshoot issues involving electrical hardware, BMS behavior, controls, communications, sensors, and system integration.

• Ensuring testing is performed safely and in accordance with applicable laboratory, electrical, and battery safety requirements.

The above statements are intended only to describe the general nature of the job and should not be construed as an all-inclusive list of position responsibilities. 

You are the kind of person who is/has:

• Analytical

• Collaborative

• Detail-Oriented

• Adaptable

• Safety-Conscious

Qualifications:

• Bachelor's degree in Electrical Engineering, Electrical Engineering Technology, or a related engineering discipline.

• 5+ years of relevant electrical engineering experience, preferably involving test, validation, verification, or development of complex electrical systems.

• Hands-on experience developing and executing electrical test plans and procedures.

• Strong understanding of electrical fundamentals, including DC power systems, voltage/current measurement, power distribution, grounding, isolation, and electrical protection.

• Experience troubleshooting electrical and electro-mechanical systems using laboratory test equipment.

• Experience with data acquisition, instrumentation, and analysis of electrical test data.

• Experience working with battery systems, BMS, energy storage systems, power electronics, or other high-power electrical systems.

• Ability to interpret electrical schematics, wiring diagrams, specifications, and system requirements.

• Strong problem-solving and root-cause-analysis skills.

• Ability to clearly document test methods, results, failures, and technical conclusions.

• Strong communication skills and the ability to work effectively across multidisciplinary engineering teams.

• Experience testing lithium-ion battery cells, modules, packs, or battery energy storage systems.

• Experience with battery cyclers, electronic loads, power supplies, environmental chambers, DAQ systems, or high-voltage test equipment.

• Experience with CAN/CAN FD, LIN, Ethernet, or other automotive/industrial communications protocols.

• Experience testing and validating BMS functionality, including voltage/current measurement, SOC/SOH estimation, balancing, protection functions, fault handling, and diagnostics.

• Experience with automated test systems and scripting languages such as Python, MATLAB, LabVIEW, or similar.

• Experience with requirements management and test-management tools.

• Experience performing electrical safety, insulation resistance, dielectric withstand, leakage current, or isolation testing.

• Familiarity with battery standards and regulatory requirements such as UL, IEC, ISO, SAE, or UN transportation requirements.

• Experience with high-voltage battery systems and associated safety practices.

• Experience with statistical analysis, Design of Experiments (DOE), reliability testing, or accelerated life testing.

• Experience developing automated validation frameworks or hardware-in-the-loop (HIL) test systems.

Reasonable accommodations may be made to enable individuals with disabilities to perform the essential functions.