Demo

Test Engineer

HX5, LLC
Brook, OH Full Time
POSTED ON 7/22/2026
AVAILABLE BEFORE 8/29/2026
Mechanical Engineer III

NASA Glenn Research Center

Brook Park, Ohio

HX5 is an award-winning provider of engineering, research and development, and technical services to clients such as NASA and the Department of Defense. Founded in 2004, HX5 is a fast-growing veteran- and woman-owned company with locations nationwide.

HX5 is currently seeking a Test Engineer to join our team in Brook Park, Ohio in support of the GEARS contract at NASA Glenn Research Center.

Essential Duties and Responsibilities:

The selected candidate will provide test engineering support to NASA’s Glenn Research Center (GRC) for hydrogen / oxygen regenerative fuel cells in lunar applications. This includes basic analytical work, experimental design, test stand build-up, and testing for electrochemical, electrical, fluidic, and thermal (including cryogenic) components and sub-systems.

Required Skills:

  • Strong experience testing fluidic and electrical components including assembling, verifying, and operating test systems.
  • Strong experience with executing hardware development test plans through data analysis and reporting.

Desired Skills:

  • Familiarity with fuel cell and/or electrolysis hardware at both the stack and system levels preferred.
  • While the immediate relevance is for experience with the PEM chemistry, other electrochemical chemistries are acceptable (e.g. alkaline (KOH or NaOH), Direct Methanol, Molten Carbonate, Phosphoric Acid, or Solid Oxide).
  • Familiarity designing and/or operating hardware for extreme thermal environments or aggressive chemical environments preferred.
  • Experience with NEC code (particularly Article 500), high pressure oxygen, high pressure hydrogen, and pneumatic systems.

Education/Experience:

Mechanical or Chemical Engineering degree from an accredited program, with the following education and experience:

  • Bachelor’s degree with 5 to 10 years of experience; at least 8 years is preferred.
  • Master’s degree with 3 to 6 years of experience.
  • Ph.D. with 0 to 3 years of experience.

Other Position Requirements:

  • Proof of U.S. Citizenship is a requirement for this position.
  • Must be able to complete a U.S. government background investigation.

HX5 offers a competitive salary and benefits package to include:

  • Relocation Assistance
  • Medical/Dental/Vision Insurance
  • 401(k) plan with Company Match
  • Paid Holidays
  • Paid Time Off
  • Life Insurance
  • Tuition Reimbursement
  • Medical and Dependent Care Flexible Spending Accounts
  • Pet Insurance

HX5, LLC is an Equal Opportunity Employer that recruits and hires qualified candidates without regard to race, religion, sex, age, national origin, ancestry, citizenship, disability, or veteran status.

HX5, LLC is a Drug Free Workplace Employer.

ACCESSIBILITY NOTICE: If you need a reasonable accommodation for any part of the employment process due to a physical or mental disability, please call (850) 362-6551.

Salary.com Estimation for Test Engineer in Brook, OH
$95,196 to $110,493
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