Battery Testing Engineer

Stress Engineering Services•Waller, TX

About The Position

Stress Engineering Services, Inc. (SES) is seeking a Battery Testing Engineer to turn complex engineering questions into meaningful data. The role combines mechanical and electrical engineering fundamentals with hands-on testing and system operation in an industrial laboratory. The engineer plans and executes custom tests, designs fixtures and methods, instruments hardware, collects high-quality data, and translates results into clear, actionable insights. Projects involve testing and analyzing battery cells, modules, and packs across applications and sectors. The position involves close work with engineers, technicians, and clients to refine test concepts, identify instrumentation and risks, troubleshoot challenges, and execute tests. The engineer monitors live data and adapts testing as needed while balancing safety, schedule, performance, and risk. Work may include characterizing battery thermal behavior, abuse response, and failure mechanisms. Depending on experience, the engineer may manage projects, interface directly with clients, and guide other engineers and technicians.

Requirements

Bachelor of Science in Mechanical Engineering.
3–5 years of experience in testing or manufacturing/industrial equipment operations.
Experience with electrical and mechanical testing methods and instrumentation.
Hands-on aptitude and comfort working with physical systems.
Experience with data acquisition and test control systems.
Ability to conceptualize and develop test methods, fixtures, and equipment with attention to accuracy and repeatability.
Strong technical writing and communication skills.
Motivation, self-direction, critical thinking, and problem-solving abilities.
Ability to obtain a U.S. government security clearance; U.S. citizenship is required.
Legal authorization to work in the U.S. and ability to provide documentation for I-9 identity and employment eligibility verification.

Nice To Haves

Familiarity with statistical techniques for reliability, capability analysis, regression, ANOVA, and sample-size justification.
Experience with CAD software such as SolidWorks or similar.
Professional Engineer license or willingness to obtain one.
Master of Science in Engineering or more than 5 years of relevant experience.
Knowledge of material properties and failure mechanisms for metals and polymers under mechanical, thermal, electrical, and environmental loading.
Experience with electrochemistry and battery energy-storage fundamentals.
Experience developing test plans and reports suitable for verification, validation, and compliance documentation.
Experience validating test methods for repeatability and reproducibility.
Familiarity with hazard and risk assessment tools such as FMEA or fault-tree analysis.
Experience with battery safety standards and regulations such as UL, IEC, UN, SAE, or similar.
Experience or familiarity with numerical simulation methods such as finite-element or computational-fluid-dynamics analysis.
Experience in battery testing, energy storage, EV systems, or other safety-critical and regulated industries.

Responsibilities

Develop custom and specialized test plans, fixtures, and test methods.
Execute tests safely and efficiently while monitoring live data.
Collect, analyze, and document high-quality test data.
Interpret results and produce clear, concise technical reports.
Instrument hardware, coordinate with technicians, and adapt testing in response to results or unexpected challenges.
Balance safety, schedule, performance, and risk during test execution.
Depending on experience, manage projects, interface directly with clients, and guide the work of other engineers and technicians.