Battery Engineer Electrical

Re:Build Manufacturing LLC (Re:Build) is a rapidly growing family of industrial businesses combining enabling technologies operational superiority and strategic M&A to build Americas next generation industrial company. At Re:Build we deploy deep expertise in operations management and technology to supercharge performance of our subsidiaries by implementing core technologies across industrial platforms in diverse growth markets. Our goal is to help revitalize the U.S. manufacturing base over the coming decades creating substantial opportunities for our employees and the communities where we operate.

We leverage deep professional expertise and a candid principled operating culture to drive differentiated outcomes for our customers our employees our communities and our investors. Ours is a fast-paced environment where individuals can stretch and be challenged with a wide variety of opportunities and projects. We empower and support our employees to pursue their fullest potential and provide meaningful avenues for personal and professional growth.

Re:Build Battery Solutions is a turnkey battery provider focused on the design development and manufacturing of durable high-quality battery packs for motive and stationary energy storage applications. We also offer custom and off-the-shelf battery management systems (BMS) and we design and build battery process lines. We are committed to strengthening the US battery value chain by providing reliable cost-effective domestic technology solutions and exceptional customer service. Re:Build Battery Solutions is part of Re:Build Manufacturing a family of industrial businesses combining cutting-edge enabling technologies operational superiority and strategic M&A to build Americas next-generation industrial company.

As an Electrical Engineer at Re:Build you will play a pivotal role in the design and development of advanced lithium-ion battery systems. You will be responsible for defining system architecture creating electrical schematics selecting and integrating electronics hardware and performing critical thermal and power dissipation analyses. Your expertise will directly influence key technical decisions that enable Re:Build to deliver safe high-performance battery modules and packs across automotive aerospace renewable energy and industrial applications.

You will support all phases of the program lifecycle from concept design through prototyping validation and launch working cross-functionally with mechanical software and manufacturing teams. Success in this role requires strong technical fundamentals excellent analytical and problem-solving skills and the ability to clearly communicate complex technical concepts to both internal and external stakeholders.

• Develop Electrical System Architecture: Define and document high- and low-voltage distribution interfaces and protection systems for battery packs.
• Create Electrical Schematics: Own the schematic design of battery pack systems including sensors contactors fuses connectors harnesses and control electronics.
• Select and Integrate Electronics Hardware: Evaluate and specify components such as current sensors power electronics microcontrollers and supporting hardware for safety performance and manufacturability.
• Perform Thermal & Power Dissipation Analysis: Conduct hardware heating and power dissipation calculations to ensure reliable operation across environmental and load conditions.
• Support Circuit Design & Validation: Contribute to the design simulation and bench testing of circuits for measurement control and protection.
• Ensure Safety & Compliance: Support DFMEA functional safety (ISO 26262 or equivalent) and industry compliance requirements including UL.
• Collaborate Across Functions: Partner with mechanical software program management and manufacturing teams to integrate electrical design into robust and manufacturable products.
• Test & Debug: Develop validation test plans analyze data and troubleshoot electrical issues.
• Communicate Results: Prepare and present technical findings and recommendations to customers suppliers and internal leadership.

• 3 years of experience in system-level design for lithium-ion battery packs or related electrical systems.
• 4 years of engineering experience in automotive aerospace industrial or related sectors.
• Strong proficiency in electrical system design and schematic capture.
• Knowledge of electronics hardware thermal management and power dissipation analysis.
• Experience with component selection and integration for high-voltage and low-voltage systems.
• Familiarity with high-voltage safety standards EMC/EMI practices and grounding/shielding.
• Excellent verbal and written communication skills with the ability to explain complex technical issues clearly.
• Strong problem-solving skills and demonstrated ability to work in fast-paced cross-functional environments.
• Bachelor of Science in Electrical Engineering (or related discipline) with strong emphasis on practical application and systems design.

• M.S. or Ph.D. in Electrical Engineering or related discipline.
• Hands-on experience with battery management systems (BMS) control algorithms or embedded electronics.
• Background in functional safety (ISO 26262) or equivalent standards.
• Experience with project leadership or cross-functional technical coordination.
• Familiarity with mathematical modeling of batteries and/or experimental validation methods.

We are a company who is going to make a difference in the industries and the communities in which we choose to operate.

Every employee of Re:Build will share ownership in the company and will share in the financial rewards of the success we achieve together at all levels of the company!

Re:Build Manufacturing is proud to be an Equal Employment Opportunity and Affirmative Action employer. We do not discriminate based upon race color religion gender gender identity or expression sexual orientation national origin genetics disability age veteran status marital status parental status cultural background organizational level work styles tenure and life experiences. Or for any other reason.

Re:Build is committed to providing reasonable accommodations for qualified individuals with disabilities in our job application procedures. If you need assistance or accommodation due to a disability you may contact us at or you may call us at 617.909.6275.