Staff Field Application Engineer

Amprius Technologies, Inc.; Fremont (CA); On-site; USD 190,000 - 210,000; Full time

Benefits offered by this job

Comprehensive compensation package

Health benefits including medical, dental, and vision coverage

Generous vacation leave with 10 paid holidays

Job summary

A leading battery manufacturer is seeking a Battery Application Engineer to work in a customer-facing role, translating customer needs into technical requirements. This position involves analyzing technical data, assisting in pack design, and coordinating testing to bring innovative battery solutions to market. Ideal candidates should have a strong background in mechanical or electrical engineering, alongside experience in battery technology. A competitive compensation package and benefits are offered, along with opportunities for onsite collaboration in Fremont.

Qualifications

• Understanding of Lithium-ion battery chemistry and safety protocols.
• Strong ability to parse technical data using tools like Excel.
• Familiarity with CAD and hands-on experience in mechanical systems.

Responsibilities

• Assist in initial customer conversations to gather requirements.
• Oversee sample test plans and track progress across labs.
• Perform preliminary design for pack configurations.

Skills

Battery Fundamentals

Analytical Skills

Prototyping

Modeling

Communication

Education

BS, MS, or ME degree in Mechanical, Electrical, Materials Science, Chemical Engineering, or related field

Tools

Excel

SolidWorks

Pybamm

Job description

About Amprius!

Amprius Technologies, Inc. is a leading manufacturer of high-energy, high-power lithium-ion batteries, delivering the industry's highest commercially available energy density. Headquartered in Fremont, California, Amprius maintains an advanced R&D lab and a MWh‑scale manufacturing facility dedicated to silicon anode and cell production. For more information about the company, please visit www.amprius.com.

Summary

As a Battery Application Engineer, you will work closely with technical leadership and customers to translate customer needs into technical requirements, assist in pack design calculations, and coordinate the testing that brings new energy solutions to life. This is a high‑growth role for a technically minded engineer who wants to move from pure R&D into a customer‑facing, solution‑oriented career.

Job Responsibilities

Technical Support & Customer Discovery

• Application Screening: Assist in initial customer conversations to gather requirements and help narrow down cell options based on technical catalogs provided. Analyze customer data packages to define solutions to customer needs.
• Data Package Preparation: Analyze technical test data and info‑packages for customers to support cell design and pack integration design process.
• Modeling design: Support customers with performing pack level capability modeling in pack integration. Review electrical, thermal, and mechanical design performance, and identify gaps from empirical testing results to assist pack integration design.
• Product to market strategy: Tailor cell selection and pack design proposal to meet specific technical requirements, consider unique battery pack requirement, and target market regulation to ensure successful battery product launch.

Testing & Validation

• Test Coordination: Oversee sample test plans for specific applications and track progress across internal and external labs to ensure schedules stay on track.
• Qualification Support for sales: Assist in gathering data for certification and cell/pack level abuse testing. Help prepare actionable risk management reports for the account management team to refine sales strategy.

Pack Integration & Partner Support

• Design Calculation: Perform preliminary design for pack configurations (voltage, capacity, series/parallel layouts) and analyze design for manufacturing capability to ensure smooth production ramping.
• Pack‑House Support: Join site visits to pack houses to document capabilities and assist in the onboarding of new manufacturing partners.
• Prototyping: Review first‑article prototypes and document discrepancies between design drawings and physical samples to speed up the development cycle.
• BMS development: Support customers or pack houses in developing BMS solutions tailored for unique lithium‑ion battery cell designs. Develop necessary BMS customization based on lithium‑ion battery chemistry to ensure successful battery pack design and product launch.

Project Coordination

• Timeline Management: Maintain and update cell samples and pack building qualification schedules, flagging potential delays to the account manager.
• Feedback Loop: Document pack qualification feedback and cell‑to‑pack quality issues, ensuring customer concerns are channeled back to the R&D and Quality teams for resolution.

Requirements

• Education: BS, MS, or ME degree in Mechanical, Electrical, Materials Science, Chemical Engineering, Manufacturing Engineering, Integration Engineering (or a related STEM field) with at least 5 years of relevant professional experience.
• Battery Fundamentals: Understanding of lithium‑ion battery chemistry, charging profiles, and safety protocols. Experience in technical product management within the battery, electric vehicle, aero‑astro, drone, or consumer electronics sectors required. Knowledge of lithium‑ion cell design, cell manufacturing, cell assembly, and cell electrochemical performance testing is a plus.
• Analytical Skills: Strong ability to parse technical data and use Excel or similar tools for performance modeling. Experience with cycling test systems including Arbin, Neware, Chroma is a plus.
• Prototyping: Familiarity with CAD (SolidWorks/AutoCAD) or electrical schematic tools is required. Hands‑on experience building mechanical and/or electrical systems is preferred, including machining, mechanical manufacturing, sheet metal fabrication and welding.
• Modeling: Prior experience with thermal‑mechanical characterization methods and quantitative modeling is required. Familiarity with Python and direct experience in battery modeling packages such as Pybamm or COMSOL is a plus.
• Eagerness to Learn: A fast learner who can quickly grasp the nuances of "Cell‑to‑Pack" integration and thermal management.
• Communication: Ability to write clear technical reports and communicate effectively with both internal teams and external partners.
• Detail Oriented: High level of accuracy in tracking validation schedules and technical specifications.

Travel & Physical Demands

• Travel requirement: This role is based in our Fremont office and involves regular collaboration with partnered companies. Some travel (up to 25%) is required to visit external testing partners or manufacturing partners, attend industry events and conferences, or support account managers at trade shows.
• This is an on‑site job. Reliable commute or planning to relocate before starting work is required.
• Work performed in an office environment and requires the ability to operate standard office equipment and keyboards.

Benefits

• Comprehensive compensation package includes base salary + RSUs. Salary range for this role is $190,000 to $210,000. Base salary will be determined based on knowledge, experience, and education.
• Health benefits include medical, dental and vision coverage. Medical options of HMO and PPO plans.
• Employer‑funded Health Reimbursement Account (HRA). HSA compatible Medical Plan, FSA Options.
• Pet Health Insurance (dog & cats).
• Traditional and Roth 40l(k) Plans.
• Generous vacation leave starts with 3 weeks annual accrual. 10 paid holidays. Sick time off.
• Cell phone reimbursement.

Amprius Technologies is committed to promoting an equal employment opportunity workplace environment and is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity or expressions, pregnancy, age, national origin, disability status, genetic information (GINA), protected veteran status, or any characteristic protected by law. The Company’s policy is to recruit, hire, train, promote, and administer all employment‑related matters based on an individual’s qualifications, abilities, and efforts without regard to protected status.