Do you learn best by taking things apart, or pushing them until they fail? Are you the engineer who can’t help but ask why something works… and how it could work better? If so, you’ll feel right at home at Stress Engineering Services, Inc. (SES).
Founded in 1972, SES is a premier provider of engineered solutions and professional consulting services across an extraordinary range of engineering disciplines. SES offers battery testing and analysis services to clients in energy storage, consumer products, automotive and EV, electric flight, defense, and medical sectors throughout the U.S. and internationally—so the problems we solve (and the tests we run) are always changing. We’re known for deep technical expertise and proven performance in instrumentation and testing, failure analysis, reliability and predictive engineering, materials science, solid mechanics and structural design, heat transfer, fluid mechanics, floating systems, and forensics. Our reputation speaks for itself: over 80% of our work comes from repeat clients and referrals.
The Role
As a Test Engineer at SES, you’ll turn complex questions into meaningful data. This role blends mechanical and electrical engineering fundamentals with hands on testing and system operation in a dynamic, industrial laboratory environment. You’ll plan and execute custom tests, design fixtures and methods, instrument hardware, collect high quality data, and transform results into clear, actionable insights.
Battery projects span testing and analysis of cells, modules, and packs in diverse applications across various sectors. The common thread: understanding how a system is supposed to perform, and prove whether it actually does.
Key responsibilities include:
What Success Looks Like
Successful Test Engineers at Stress are adaptable problem solvers who thrive in both independent and collaborative environments. You’re hands on, mechanically curious, and comfortable working with electrical, mechanical, and chemical systems. You can safely navigate a heavy industrial lab setting, juggle competing priorities, and keep projects moving forward—even when tests don’t go as planned.
Strong communication skills are essential. You’ll routinely interact with teammates and clients, translating technical details into clear verbal explanations and well written test methods and reports. Experience in battery testing, energy storage, EV systems, or other safety-critical and regulated industries is a plus. Depending on your experience, you may also take the lead on managing projects, interfacing directly with clients, and guiding the work of other engineers and technicians.
SES Core Values
A Day in the Life
No two days are the same, and that’s exactly what makes this role rewarding. Your morning might start with a technical discussion alongside engineers, technicians, and clients, refining a test concept or identifying instrumentation and risk considerations. You may review drawings, finalize a test plan, or troubleshoot an unexpected challenge that requires creative thinking and mechanical intuition.
Before long, you’re in the lab, instrumenting hardware, coordinating with technicians, monitoring live data, and adapting on the fly. Sometimes that means pushing systems to their limits… breaking them or even blowing them up (intentionally) to uncover answers that simply can’t be found any other way, particularly when characterizing battery thermal behavior, abuse response, or failure mechanisms. Throughout the day, you balance safety, schedule, and performance while managing risk in real time. By day’s end, you can see tangible progress: data collected, questions answered, and another complex test successfully executed. It’s hands-on, fast paced, occasionally chaotic, and deeply satisfying work that keeps Test Engineers at SES excited to come back every day.
Basic Qualifications
Preferred Qualifications
Why Join SES?
What’s in It for You?
At SES, curiosity is encouraged and technical depth is valued. You’ll work alongside some of the brightest engineers in the industry on challenges that truly matter, including technologies that enable safer, more reliable, and more sustainable energy systems.
As an employee-owned firm, we offer:
Our Commitment
SES is proud to be an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, gender identity, sexual orientation, national origin, genetics, disability, age, veteran status, or other protected characteristics.
At SES we take pride in fostering an inclusive and dynamic workplace that values diverse perspectives and experiences. This position requires legal authorization to work in the U.S. Candidates must be able to provide the necessary documentation to verify identity & employment eligibility through the I-9 verification process.
Recruitment Process Disclosure:
As part of your candidacy and potential future employment, you agree to maintain the confidentiality of certain information. This includes not disclosing, sharing, or discussing any proprietary, sensitive, or client-related information obtained through your interactions with Stress Engineering Services. Whether through interviews, onboarding, or employment, you are expected to treat all company and client information as confidential and protected. This obligation applies during and after your engagement with us. By continuing in the hiring process, you acknowledge and agree to these terms of confidentiality and non-disclosure.
EEO/Vet/Disabled Employer
At Stress Engineering Services we specialize in taking on your toughest technical problems because we understand that you don’t just want answers; you want the right answers.
Since 1972, we have been providing solutions for companies and industries that require in-depth technical knowledge and proven performance in the fields of engineering design and analysis, thermal and fluid sciences, instrumentation, and testing.
Problem solving is what we do and what we deliver. It is our commitment to provide the most comprehensive design, analysis, and testing services with an unsurpassed level of engineering integrity and expertise. This devotion to quality stems from the two basic principles on which the company was founded – technical excellence and a passion to serve.
Multi-disciplinary engineering methods, advanced technology, innovative applications, and a highly knowledgeable and experienced staff characterize the level of our expertise. However, expertise by itself without a spirit of service lacks value. We listen to clients – their requirements, expectations, schedules, and concerns – and provide them with the service they deserve.