Engineer 1, Battery Materials & Cell

Applications will be accepted through end of day August 23. All resumes will be reviewed together after the application window closes.

Full-time, in person

Seattle, Washington, USA

Pay: $83,000.00 - $90,000.00 per year

Emerald Battery Labs is a sodium-ion battery company founded by engineers and scientists with more than 30 years of combined experience in energy storage. Utilizing a localized critical mineral free supply chain, we create advanced materials which improve the performance and reduce the cost of sodium-ion batteries.

At Emerald Battery Labs, we value curiosity, service, and winning together. We’re looking for the best people to further our mission to revolutionize sodium-ion batteries and welcome applicants with diverse backgrounds and identities. If you are excited to tackle real-world energy challenges and contribute to technologies that will power a sustainable future, we want to hear from you. As an early hire, you will play a meaningful role in shaping the direction of our technology and company, while at the same time growing your career in the future of energy storage.

• Synthesize Emerald Battery Labs' proprietary sodium-ion anode materials, executing and improving processes spanning precursor preparation, thermal treatment, and particle size reduction while maintaining complete process records
• Learn hands‑on cell fabrication from slurry preparation through electrode coating and coin cell assembly, progressing to pouch cell builds as your skills develop
• Learn coin and pouch cell test engineering: setting up electrochemical test protocols, operating cyclers, monitoring cells on test, and performing first‑pass data review
• Document what you do - synthesis records, build records, and work instructions for new and revised processes - so that what works once works every time
• Collaborate closely and cross‑functionally with founders, senior scientists, and engineers to design, troubleshoot, and optimize materials and lab‑scale processes

• Holds a bachelor's degree in Chemistry, Chemical Engineering, Materials Science, Mechanical Engineering, or a related field
• Has 0-2 years of experience; you should have some preparation for this role from course work, internships, co‑ops, undergraduate research, extracurricular projects (e.g., battery, EV, rocketry, or maker teams) or early career roles
• Has hands‑on laboratory or shop experience and enjoys physical, detail‑oriented work - making things, running equipment, and figuring out why something didn’t work
• Brings energy and hustle: you can keep momentum without being tasked and you’d rather run the experiment today than plan it for next week
• Is a natural problem solver; when a something fails or under performs, your instinct is to dig into the why, and move to corrective action
• Demonstrates commitment and follow‑through: you finish what you start, own your results (good and bad), and persevere when the work gets repetitive or hard
• Is comfortable working in a fast‑paced startup environment with limited resources, where scrappiness and problem‑solving are essential
• Takes laboratory safety seriously and follows chemical handling and PPE practices without shortcuts
• Communicates clearly in writing and in person, explaining what you did, what you saw, and what you think it means

• Salary Range: $83,000 – $90,000 per year (based on experience)
• Equity:
  Eligible for company stock options
• Medical, dental, and vision insurance (we cover 100% of premiums for full‑time employees)
• Life and disability insurance
• Paid sick leave and paid company holidays
• Paid vacation

This is a 100% in‑office and in‑lab role. Remote or hybrid work is not available due to the hands‑on nature of laboratory research, battery fabrication, materials testing, and safety requirements.

• Working in a laboratory environment with chemicals and battery materials
• Standing for extended periods, handling small components, and occasionally lifting up to ~25 lbs

Please note:
We are not currently able to accommodate candidates in need of work sponsorship.