Data Engineer - Battery Technology

Shape the data foundation for a seed-stage sodium-ion battery company, where your work supports both production tracking and technology development. This is the first Data Engineer role at Stealth-mode Battery Technology Co., giving you meaningful scope to build the ecosystem that helps the team move faster with confidence.

What you’ll build and maintain

You will design and implement the data ecosystem for battery development, including systems that track battery materials through the full workflow from synthesis and mixing to coating, cell assembly, and testing. The goal is to turn cell test data into repeatable insights through analysis and visualization tools that support cell cycle aging and reference performance evaluation.

• Design and implement the data ecosystem to drive production and technology development
• Operate, maintain, troubleshoot, and improve the raw-materials-to-cell tracking system
• Build new data analysis and visualization tools for 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

Key requirements

• Masters 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
• Fluent in Python
• Direct experience with SQL databases and writing SQL queries
• Direct experience building web applications
• Familiar with version control software such as Git
• Strong independent worker
• Comfort operating in early-stage environments, building infrastructure rather than only running experiments

Technologies

• Python
• SQL
• Git

Compensation and benefits

Salary: USD 140,000 - 185,000 per year.

• Competitive salary plus meaningful early-stage equity
• Flexible time off (for exempt employees)
• Medical healthcare insurance, with additional coverage options for family members
• Dental and Vision insurance, with additional coverage options 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
• Onsite work schedule currently
• Office snacks include healthy options, chips, and drinks

Why this role

This is a ground-floor opportunity to influence both the science and the culture of a well-funded seed-stage company. You will have direct access to the founders and the chance to work on a meaningful challenge, since sodium-ion is one of the most consequential battery chemistries of the next decade.