Senior Battery Engineer

The role

You will own the design, development, integration, and qualification of spacecraft battery systems. You will develop reliable energy storage solutions to power spacecraft through eclipse periods and peak load events.

What you will do

• Own the architecture and development of spacecraft batteries from concept through flight qualification
• Design battery packs, module architectures, and electrical interconnects
• Develop a battery management system (BMS)
• Select battery cell chemistries and components
• Perform battery sizing, capacity analysis, and degradation modeling
• Develop battery charging and discharge strategies
• Define thermal management requirements and collaborate with thermal engineers
• Lead battery integration, validation, environmental qualification, and acceptance testing
• Investigate battery performance, reliability, and failure modes
• Support manufacturing, supplier selection, and production readiness

Required qualifications

• BS, MS, or PhD in Electrical Engineering, Mechanical Engineering, Materials Science, Chemical Engineering, or a related discipline
• 3+ years developing battery systems for aerospace, automotive, defense, or other high-reliability applications
• Experience designing battery packs and energy storage systems
• Knowledge of lithium-ion battery chemistry (NMC, NCA, LFP), degradation mechanisms, and safety considerations
• Experience developing or integrating Battery Management Systems (BMS)
• Experience with battery testing, characterization, and validation
• Familiarity with battery modeling, lifecycle analysis, and performance prediction

Nice to have

• Experience developing spacecraft or satellite battery systems
• Experience with radiation effects on battery systems and space-qualified components
• Experience with battery thermal modeling and thermal runaway mitigation
• Knowledge of NASA, ECSS, or aerospace battery qualification and safety standards
• Experience supporting vibration, shock, thermal vacuum, and environmental testing campaigns
• Experience with battery safety analysis including FMEA, fault tree analysis (FTA), and hazard assessments
• Familiarity with MATLAB/Simulink, Python, or equivalent tools
• Experience with isolated cell monitoring architectures and BMS IC platforms
• Experience supporting battery hardware from prototype through flight

Benefits

• Equity in Cowboy Space Corp.
• Medical, dental, and vision insurance for employees and eligible dependents
• 401(k) retirement savings plan
• Paid time off
• 10 paid holidays per calendar year
• Paid parental leave
• Relocation assistance if applicable
• Daily lunch in the office
• Fully stocked kitchen with beverages and snacks

Before you apply

• Applicants must be a U.S. citizen, lawful permanent resident of the U.S., protected individual as defined by 8 U.S.C. 1324b(a)(3), or eligible to obtain the required authorizations from the U.S. Depar

About the company

Cowboy Space Corporation is building the infrastructure to power and connect the orbital economy. The company is building modular, scalable satellites to collect sunlight in Low Earth Orbit.