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EnerSys

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Lead Mechanical Engineer

$105k to $130k

Commack, NY, USPosted Nov 6, 2026

Against the United States typical range

Job description

Ener. Sys Advanced Systems (EAS) is a specialized division of Ener. Sys—a global leader in stored energy solutions for industrial applications. EAS focuses on cutting-edge energy solutions for the aerospace, defense, and medical industries . As we continue to grow, we’re looking for individuals who share a passion for these industries and want to be part of an innovative, dynamic team.

Certain positions at Ener. Sys Advanced Systems require access to information or technology that is subject to the International Traffic in Arms Regulations (ITAR) and other U.S. government security regulations. Candidates for these positions should be a “U.S. Person” under ITAR (U.S. citizen, lawful permanent resident, or a refugee/asylee) and/or otherwise comply with ITAR requirements for access rights to be considered for a position.

What We Offer

Generous Time Off – 3+ weeks of paid time off, plus 11 paid holidays Comprehensive Benefits – Medical, dental, and vision coverage for employees and dependents at a discounted rate Financial & Career Growth – Life insurance, short-term disability, educational reimbursement, flexible spending accounts, and an employee stock purchase plan 401(k) Matching – 100% match at a 6% contribution level Innovative Culture – We value excellence, teamwork, and long-term relationships with stakeholders, colleagues, and customers.

Through innovative technology and ongoing training, we invest in our employees’ skills and career development. At EAS, we don’t just build batteries – we power systems and devices that protect not only individual citizens but communities across the world. If you’re excited about working in an innovative, fast-paced, high-tech environment, where your contributions make a real impact, we’d love to hear from you!

Compensation

$105,000 to $130,000 Compensation may vary based on applicant's work experience, education level, skill set. Learn More About EAS Job Purpose As a Lead Mechanical Engineer professional at Bren-Tronics, part of Ener. Sys and a manufacture of advanced portable power solutions, you will contribute to the design and development of batteries, chargers and other complex energy storage-based systems.

Your growing technical expertise in injection molding and sheet metal part design is required.

Essential Duties and Responsibilities

Work closely with management, electrical engineers, drafters, technicians, and manufacturing personnel to design, and develop new products. Utilize 3D Computer-Aided Design (CAD) to generate designs of systems, assemblies, and components. Generate comprehensive technical drawings and schematics for mechanical systems and components while working within the configuration control systems ensuring accuracy, consistency.

Develop development sources for mechanical system components. Perform structural and thermal analyses on designs. Provide expert leadership and troubleshooting for the construction and refinement of battery system prototypes to production. Facilitate the seamless transition of new battery products from the prototype stage to full-scale production.

Engineer specialized fixtures and assembly aids tailored for battery production, optimizing manufacturing processes and ensuring product quality. Identify and resolve technical issues within the supply chain. Engage in the creation and refinement of project proposals, ensuring technical accuracy, compliance with client requirements, and alignment with organizational goals.

Qualifications

Bachelor’s degree in mechanical engineering. Minimum of 5+ years hands on experience developing products and working in engineering production department. Experience with Solid. Works. Practical experience in metal and plastic injection molding. Battery packing experience a plus. Strong knowledge of mechanical engineering principles, materials, and processes.

Excellent communication, problem-solving, and decision-making skills. General Job Requirements Generic Ener. Sys provides equal employment opportunities to all employees and applicants for employment and prohibits discrimination and harassment of any type without regard to race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state or local laws.

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Description copied from EnerSys's careers page. Read the full posting before you apply.

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