Battery Engineer

**Battery Engineer – Design & Manufacturing** **Company:** Zero Point Energy Labs (SPHERES INC) **Location:** Gardena, CA **Employment Type:** Full-Time **Experience Required:** Minimum 3 Years **MUST BE A U.S Person (Citizen, Permanent resident) for export control purposes.** **About Zero Point Energy Labs** Zero Point Energy Labs is an advanced battery technology company specializing in the design, development, and manufacturing of high-performance battery systems for aerospace, defense, robotics, and other demanding applications. We work with next-generation lithium-ion and lithium-metal technologies to develop custom battery solutions that meet stringent performance, safety, and operational requirements. **Position Overview** We are seeking an experienced, highly detail-oriented **Battery Engineer** to support the design, development, validation, and manufacturing of custom battery systems. The ideal candidate will have hands-on experience in battery pack engineering, electrical and mechanical integration, and transitioning designs from prototype development to full-scale production. This role requires **exceptional attention to detail**, strong technical judgment, and the ability to ensure that every battery design meets customer specifications, performance requirements, and manufacturing objectives. The Battery Engineer will work closely with our engineering and manufacturing teams to develop reliable, scalable, and cost-effective battery solutions. **Key Responsibilities** **Battery Pack Design & Development** * Design and develop custom lithium-ion and lithium-metal battery packs based on customer and program requirements. * Translate technical specifications into practical electrical, mechanical, and thermal battery designs. * Perform battery sizing, cell selection, configuration analysis, and electrical performance calculations. * Develop battery pack architectures, including cell arrangements, interconnects, busbars, wiring, protection systems, and thermal management solutions. * Integrate battery management systems (BMS), protection circuits, and electrical interfaces. * Produce and review engineering drawings, CAD models, schematics, and technical documentation. * Ensure dimensional accuracy, component compatibility, and compliance with all applicable design specifications. **Engineering Validation & Quality** * Verify that battery designs meet electrical, mechanical, thermal, environmental, and operational requirements. * Develop and execute engineering validation and testing procedures. * Evaluate battery performance, including discharge characteristics, temperature behavior, internal resistance, and cycle life. * Identify potential design risks, manufacturing defects, and performance limitations before production. * Conduct thorough design reviews to ensure engineering accuracy and completeness. * Investigate technical issues, determine root causes, and implement corrective engineering solutions. * Support compliance with applicable battery safety, transportation, and customer-specific standards, including UN38.3 and relevant MIL-STD requirements. **Manufacturing & Production Engineering** * Develop battery pack designs with full-scale manufacturing, repeatability, and production efficiency in mind. * Establish and refine assembly processes, manufacturing instructions, and quality control procedures. * Work directly with manufacturing technicians to ensure engineering designs can be consistently reproduced. * Identify opportunities to improve manufacturing throughput, reduce assembly time, and minimize production costs. * Develop and improve production tooling, fixtures, and assembly methods. * Support the transition from prototype development to pilot production and high-volume manufacturing. * Ensure manufacturing processes maintain dimensional consistency, electrical integrity, and product quality. * Troubleshoot manufacturing challenges and implement process improvements. **Technical Collaboration & Project Execution** * Collaborate with customers, suppliers, and internal engineering teams to define and validate technical requirements. * Review customer specifications and ensure proposed battery configurations meet program objectives. * Maintain accurate engineering documentation, design revisions, and technical records. * Support engineering design reviews, technical discussions, and project milestones. * Coordinate with manufacturing teams to ensure designs are production-ready before full-scale deployment. * Take ownership of assigned engineering projects and ensure deliverables are completed accurately and on schedule. **Required Qualifications** * **Minimum 3 years of professional experience** in battery engineering, battery pack design, or closely related electrical/mechanical engineering roles. * Bachelor’s degree in Electrical Engineering, Mechanical Engineering, or a related engineering discipline. * Demonstrated experience designing and developing lithium-ion battery packs. * **Exceptional attention to detail and a demonstrated ability to produce accurate, high-quality engineering work.** * Strong understanding of battery cell characteristics, electrical configurations, thermal behavior, and safety considerations. * Experience integrating BMS, electrical protection components, and battery interconnect systems. * Proficiency with CAD software such as SolidWorks or equivalent. * Experience developing engineering drawings, specifications, and manufacturing documentation. * Familiarity with battery assembly processes, including welding, electrical connections, insulation, and mechanical integration. * Experience with battery testing, troubleshooting, and performance validation. * Understanding of design for manufacturability (DFM) and scalable production processes. * Strong analytical and problem-solving skills. * Ability to independently manage engineering responsibilities while maintaining accuracy and consistency. **Preferred Qualifications** * Experience developing battery systems for aerospace, defense, robotics, UAVs, UUVs, or other high-performance applications. * Experience transitioning custom battery designs into medium- or high-volume production. * Familiarity with MIL-STD-810, UN38.3, and other relevant battery qualification standards. * Experience with cylindrical, pouch, and lithium-metal cell technologies. * Knowledge of battery thermal management and mechanical compression systems. * Experience with laser welding, resistance welding, or other battery interconnection methods. * Familiarity with ITAR-controlled programs and defense manufacturing environments. * Experience developing manufacturing fixtures, tooling, and automated assembly processes. * Experience with engineering change control, design verification, and production quality systems. **What We’re Looking For** We are seeking a highly detail-oriented, hands-on engineer with **exceptional attention to detail**, strong technical judgment, and a commitment to engineering precision. The ideal candidate takes ownership of their work, carefully evaluates technical requirements, and ensures that every aspect of a battery design is thoroughly considered, validated, and documented. They must be capable of identifying potential design and manufacturing challenges before they become problems, maintaining high standards of accuracy, and developing reliable battery systems that can transition efficiently from prototype to full-scale production. We value engineers who are proactive, organized, technically capable, and comfortable working in a fast-paced environment where accuracy, accountability, and execution are critical. **Attention to detail, accountability, and the ability to consistently deliver precise, high-quality engineering work are essential for success in this role.** Pay: $55,000.00 - $140,000.00 per year Benefits: * Professional development assistance Work Location: In person