Battery Test Engineer

Firewood Marketing, Inc.; Cupertino (CA); On-site; USD 130,000 - 160,000; Full time

Benefits offered by this job

Excellent medical, dental, and vision insurance

Generous PTO and 15 company-wide holidays

401k with company contribution

Paid parental leave

Work-life balance emphasis

Career growth opportunities

Inclusive culture with diverse employee groups

Job summary

Firewood Marketing, Inc. is seeking a hands-on Battery Test Engineer in Cupertino, California. This role is essential for qualifying next-generation BMS algorithms and turning designs into validated, production-ready battery systems for consumer products.

Candidates should possess a relevant M.Sc. or B.Sc., strong programming skills in Python, and hands-on experience with battery testing equipment. The position offers a comprehensive benefits package, including medical coverage, generous PTO, and 401k contributions.

Qualifications

• M.Sc. in Electrical Engineering or Computer Science, or B.Sc. with relevant industrial experience.
• Strong programming skills, preferably in Python, for test automation.
• Hands-on experience with battery testers, source meters, multimeters, and similar tools.
• Excellent debugging skills for tackling challenging electrical and system problems.
• Practical experience working on electrical circuits.

Responsibilities

• Execute test plans and deliver high-quality data on schedule.
• Support algorithm engineers by analyzing test data.
• Diagnose equipment and sample issues; maintain and repair test equipment.
• Co-develop automated validation processes with test engineers.
• Collaborate with algorithm engineers to improve product quality.

Skills

Strong programming skills in Python

Hands-on experience with battery testers

Excellent debugging skills

Practical experience working on electrical circuits

Education

M.Sc. in Electrical Engineering or Computer Science

B.Sc. with relevant industrial experience

Tools

Battery testers

Source meters

Multimeters

Job description

Battery Test Engineer

The Role

We are seeking a hands‑on Battery Test Engineer with a proactive, get‑it‑done attitude to join a team qualifying next‑generation BMS algorithms and architectures. You will be instrumental in turning algorithm designs into validated, production‑ready battery systems that deliver exceptional user experience for portable consumer products.

This position contributes to the development and qualification of advanced lithium‑ion battery technology for portable power consumer applications. You will work with the Battery Software Qualification team to develop battery firmware, algorithm and BMS qualification protocols to ensure high‑level user experience. You will collaborate with algorithm engineers and other test engineers in the team to improve the quality, productivity and efficiency of these consumer products.

Location: Cupertino, California, USA

Work Schedule: On‑site.

What You’ll Do

• Execute test plans — Run electrical and battery cycler test plans provided by algorithm engineers and deliver high‑quality data on schedule.
• Analyze and investigate — Support algorithm engineers by analyzing test data and investigating abnormal observations.
• Troubleshoot and maintain — Diagnose equipment and sample issues; maintain and repair test equipment as needed.
• Automate validation — Co‑develop automated validation processes and test automation with other test engineers.
• Collaborate across teams — Work closely with algorithm engineers and test peers to improve product quality, productivity, and efficiency.

What You Bring (Must‑Haves)

• Degree — M.Sc. in Electrical Engineering or Computer Science, or B.Sc. with relevant industrial experience.
• Programming — Strong programming skills, preferably in Python, for test automation.
• Test equipment experience — Hands‑on experience with battery testers, source meters, multimeters, and similar tools.
• Debugging — Excellent debugging skills for tackling challenging electrical and system problems.
• Circuit work — Practical experience working on electrical circuits.

What We’d Love to See (Nice‑to‑Haves)

• Battery knowledge — Familiarity with Li‑ion battery chemistry and behavior.
• BMS experience — Experience in BMS algorithm, firmware, software development, or validation.
• Team fit — Comfortable working in a collaborative, dynamic environment.
• Attention to detail — Proven track record on tasks requiring high accuracy and attention to detail.

What We Offer

• Excellent, full coverage medical, dental, and vision insurance
• Generous PTO and 15 company‑wide holidays
• 401k with company contribution
• Paid parental leave
• Work‑life balance with an emphasis on personal well‑being
• Career growth in a disruptor space & entrepreneurial opportunities within the Monks network
• A globally diverse & inclusive culture with employee resource groups such as S4 Melanin, Pride.Monks, Cultura.Monks, and more!
• Authentic commitment to DEI efforts and sustainable growth.

This role is subject to our Return to Office (RTO) policy. If you reside within a commutable distance of one of our office locations, you will be expected to work from the office a set number of days per week. The specific details, including the number of required office days, will be in accordance with the company’s then‑current RTO policy, which is subject to change from time to time.

Salary Range: $130,000—$160,000 USD

Equal Employment Opportunity Statement

Monks does not discriminate on the basis of race, sex, color, religion, age, national origin, marital status, disability, veteran status, genetic information, sexual orientation, gender identity, or any other reason prohibited by law in provision of employment opportunities and benefits.