Battery Engineer - Cell Development

Mapt; Boston (MA); On-site; USD 120,000 - 180,000; Full time

Job summary

Mapt in Boston seeks a Battery Engineer or Senior Battery Engineer to lead cell-level development of next-generation electrolytes and formats, focusing on cylindrical cells.

You will collaborate with electrolyte and manufacturing teams to translate lab results to pilot-scale cells, perform postmortem failure analysis and electrochemical characterization, and deliver technical reports to guide project decisions while championing safe lab operations.

Qualifications

• Bachelors degree in engineering, materials science, chemistry, or a related field.
• Experience in lithium-ion cell development and formation protocols.
• Hands-on pilot-scale manufacturing experience.
• Familiarity with cylindrical/prismatic cell formats.
• Strong laboratory skills and commitment to safe lab operations.

Responsibilities

• Evaluate cell designs and electrolyte optimization for high-voltage lithium-ion chemistries from pouch format into cylindrical and prismatic cell formats.
• Develop and refine cell formation protocols to improve performance and manufacturing yield.
• Conduct postmortem failure analysis and electrochemical characterization to diagnose degradation mechanisms and drive corrective action.
• Drive cell development and process optimization in pilot-scale manufacturing, including assembly, testing, and troubleshooting of cylindrical and prismatic cells.
• Perform data analysis of cell life and electrolyte performance under diverse testing conditions across multiple cell chemistries and formats.
• Deliver technical reports to multidisciplinary R&D teams, summarizing test results, data analysis, and recommendations to guide project decisions.
• Champion safe lab operations, ensuring adherence to safety protocols across all laboratory and pilot-scale testing activities.

Skills

Li-ion dev

Formation protocols

Postmortem analysis

Electrochemical testing

Pilot-scale manufacturing

Cylindrical cells

Prismatic cells

Lab safety

Education

Bachelor's in engineering/related

Tools

Neware battery cyclers

Arbin battery cyclers

Job description

The Battery Engineer / Senior Battery Engineer will join the product development team to drive cell-level development of next-generation electrolytes into larger formats. In this role, you will drive cell design, electrolyte optimization, and formation protocol development for lithium-ion chemistries, with a strong emphasis on cylindrical cell development.

You will work cross-functionally with electrolyte and manufacturing teams to translate lab-scale results into pilot-scale cells and will play a central role in diagnosing performance and safety issues through postmortem failure analysis and electrochemical characterization.

Key Responsibilities

• Evaluate cell designs and electrolyte optimization for high-voltage lithium-ion chemistries from pouch format into cylindrical and prismatic cell formats.
• Develop and refine cell formation protocols to improve performance and manufacturing yield.
• Conduct postmortem failure analysis and electrochemical characterization to diagnose degradation mechanisms and drive corrective action.
• Drive cell development and process optimization in pilot-scale manufacturing, including assembly, testing, and troubleshooting of cylindrical and prismatic cells.
• Perform data analysis of cell life and electrolyte performance under diverse testing conditions (e.g., fast charge, high voltage, low/high temperatures, etc) across multiple cell chemistries and formats.
• Deliver technical reports to multidisciplinary R&D teams, summarizing test results, data analysis, and recommendations to guide project decisions.
• Champion safe lab operations, ensuring adherence to safety protocols across all laboratory and pilot-scale testing activities.

Qualifications

• Bachelor's degree in engineering, materials science, chemistry, or a related field (advanced degree a plus).
• Experience in lithium-ion cell development, including cell formation protocol development, postmortem failure analysis, and electrochemical characterization.
• Hands-on experience with cell development in pilot-scale manufacturing environments, from prototype build through process optimization.
• Experience with cylindrical and/or prismatic cell formats is required
• Strong laboratory skills, including precise instrumentation handling, data collection, and experimental design, along with a demonstrated commitment to safe lab operations.

Bonus Skills

• Familiarity with Neware and Arbin battery cyclers and associated software for electrochemical testing and analysis.
• Prior experience with cell design and scale-up efforts spanning multiple form factors, including transition from pouch to cylindrical and prismatic cells.
• Cross-functional project execution experience, working alongside materials, manufacturing, and product teams to bring cells from lab to pilot scale.