Data Engineer - Battery Technology

Stealth-mode Battery Technology Co. is building a sodium-ion battery platform and needs a first Data Engineer to shape the data ecosystem from the ground up. In this onsite role in Santa Clara, CA, you will architect systems that track battery materials through the end-to-end workflow and turn cell test results into analysis, pipelines, and visualization tools that support production and technology development.

This is a seed-stage environment where infrastructure work is a core part of the role, alongside building and improving database systems and in-house tooling. You will collaborate closely with the technical team and stakeholders across the company as part of a small, growing international team.

What you’ll do

• Design and implement a data ecosystem that supports production and technology development.
• Operate, maintain, troubleshoot, and improve a raw-materials-to-cell tracking system.
• Build new data analysis and visualization tools focused on battery cell cycle aging and reference performance tests.
• Integrate new and existing analysis tools into automated data pipelines.
• Implement and maintain version control for in-house data analysis tools.

What you bring

• Master’s degree in Data Science or Engineering (Materials, Chemical, Electrical, etc.).
• 6–8 years of direct experience building and/or improving database systems for production tracking.
• Fluency in Python.
• Direct experience with SQL databases and writing SQL queries.
• Direct experience building web applications.
• Experience with version control software such as Git.
• Strong independent working style.
• Comfort operating in an early-stage environment where you build infrastructure rather than only running experiments.

Technology stack

• Python
• SQL
• Git

Compensation and benefits

$140,000 - $185,000 per year. Competitive salary plus meaningful early-stage equity is included.

• Flexible time off for exempt employees.
• Medical healthcare insurance, plus additional coverage for family members.
• Dental and vision insurance, plus additional coverage for family members.
• HSA (Health Savings Account) option.
• FSA (Flexible Spending Account) option.

Work environment

• Innovative, flexible, and fast-paced development environment.
• Very close collaboration with the technical team and stakeholders across the company.
• Small, growing international team from 7+ countries.
• Office snacks include healthy options, chips, and drinks.
• Onsite work schedule currently.

As the first Data Engineer on the team, this role offers a ground-floor opportunity to influence both the science and the culture of a well-funded seed-stage company, with direct access to founders and no bureaucratic barriers to pursuing bold ideas.