Senior Test Engineer

Ambri, Inc. Published: August 9, 2022
Marlborough, MA
Skill Level
Senior Level
Job Type
Energy / Engineering / Program Management
(Number of Job Posting Views: 1)

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Ambri, an energy startup commercializing an innovative battery technology first developed at MIT, is seeking a Senior Test Engineer to support the roll out, ramp, test and validation of Ambri’s DC system product.

Position Overview:

Ambri is seeking an individual to be a key member of the Ambri Advanced Manufacturing Engineering team. The Senior Test Engineer position requires working collaboratively with other engineering disciplines to design novel solutions to complex utility scale energy storage challenges using Ambri’s LiquidTM Metal Battery technology.  The individual in this role will be called upon to support efforts by the design team in their prototype and pilot build/ assembly of integrated systems.  The Senior Test Engineer will be responsible for working in conjunction with other disciplines (Mechanical Engineering, Electrical Engineering, Firmware Engineering) as Ambri drives to test and validate system performance. The Senior Test Engineer will work with the Product Safety and Compliance Engineering team to run safety test and compliance for Ambri’s LiquidTM Metal Battery technology.


  • Responsible for the development of manufacturing test processes for new product introduction and initiatives. To be based on engineering specification, including PFMEA, Statistical process control (SPC) and new test equipment development.
  • Battery cell characterization and qualification, battery string module design validation and verification, and root cause failure analysis to support product development and new technology development.
  • Develop automated data collection and data processing for battery manufacturing test and quality control.
  • Set-up test articles and perform qualification and characterization testing on battery cells and battery string modules including but not limited to life cycle testing, power testing, and thermal uniformity testing.
  • Author testing specifications for complete test coverage of design features utilizing data-driven methods and accuracy analysis techniques.
  • Develop electrical design specifications for vendors to manufacture and test battery pack components. This includes printed circuit boards, PCB assemblies and battery packs.
  • Develop standard operating and safety procedures for testing cells and battery strings
  • Build a knowledge base and contribute to the growth of Ambri expertise of the current technical state of battery cell and module testing.


  • Bachelors Degree in Mechanical or  Electrical Engineering
  • Experience with battery core technologies or battery management systems is a plus (hardware, software, and firmware)
  • 5-10 years of experience developing electronics or manufacturing test equipment for mass production products with an understanding of testing techniques needed to test mixed signal (analog and digital) modules such as battery packs.
  • Strong understanding of battery cell characteristics
  • Experience with Arbin, Maccor, or similar battery testing systems is desired
  • Demonstrated ability to write scripts using higher level programming scripting languages such as python, C, C • for automating test equipment
  • Familiarity with automated test station platforms such as LabVIEW
  • Understanding of CANbus/Modbus and familiarity with battery safety certification is a plus.
  • Knowledge of battery concepts including State-of-Charge (SOC), State-of-Health (SOH) and cell balancing.
  • Familiarity with working with high voltage and currents and safety practices related to them.
  • Cultural fit in an organization that values teamwork and diversity.

Why work at Ambri?

Ambri offers its employees a fantastic opportunity to advance a career while commercializing a transformative technology that will change the entire electricity industry. We are a venture capital-backed company with high-integrity leadership that is focused on making positive change. You’ll be working on a novel liquid metal battery technology in an environment that encourages creativity and out-of-the-box thinking while driving towards results. Our team is small and you’ll have the opportunity to take on a great deal of responsibility. We have a top-tier benefits package and extra employee perks such as weekly company lunches and semi-annual community service outings.

More About Ambri

Ambri is an MIT-spin-out company that is commercializing an innovative grid-scale electricity storage technology that will transform the way power grids are operated worldwide. Ambri’s ‘Liquid Metal Battery’ will lower electricity costs, enable more widespread adoption of renewable resources like wind and solar, and improve grid reliability. Ambri is headquartered in Marlborough, MA. The company is backed by top-tier investors including Bill Gates. We are constantly seeking intelligent, creative and ambitious individuals to join our team to help us change the world.

Ambri is an Equal Opportunity Employer and all qualified applicants will receive consideration. Ambri does not discriminate on the basis of race, color, creed, religion, sex, gender identity or expression, sexual orientation, pregnancy, status as a parent, age, marital status, national origin, ancestry, citizenship status, physical or mental disability or serious medical condition, protected genetic information, political beliefs, status as a veteran, or any other characteristic protected by law.

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