Battery Engineer
Powernap Energy
Other Engineering
Posted on May 12, 2026
About PowerNaP
Powernap Energy is a battery materials company. We’re on a mission to create a sustainable energy future for everyone. To achieve this promise, we engineer advanced materials to increase the energy density of sodium-ion batteries, raising their performance to parity with lithium-ion at a fraction of the cost.
About Sodium-Ion Batteries
Today, transportation and power generation account for 60% of CO2 emissions. Sodium-ion batteries are made of Earth abundant materials, offering improved supply chain resilience and lower cost over lithium-ion batteries. Cost-effective batteries mean cheaper electricity and broader access to electric transportation, directly reducing those CO2 emissions.
What you'll do
- Design and execute experiments and prototype cell builds to meet ambitious cell performance targets across various cell form factors.
- Analyze cell performance data, identify root causes, and propose corrective actions for performance gaps between lab scale and prototype cells. Demonstrate proactivity in identifying needs and addressing them.
- Define manufacturing requirements and validate production cells for real-world deployment.
- Shape the technical roadmap for next-generation cell development.
- Effectively communicate new ideas, knowledge, and test results internally.
- Foster and maintain relationships with partners and customers to manage cell builds from lab to production scale.
What We’re Looking For
- BS (MS or PhD preferred) in Materials Science, Chemical Engineering, Chemistry, or equivalent
- 5+ years of hands-on experience, or equivalent expertise
- Deep knowledge of electrode formulation, cell engineering, battery manufacturing processes, and related metrics from lab to production scale
- Proven experience scaling from prototypes to high-volume production, or managing complex projects with external partners
- Commitment to rigorous safety standards and experience handling hazardous materials
Compensation & Benefits
- This is a part-time contract role with potential to convert to full-time.
- This is a hybrid role that requests limited time at our San Leandro, California office.