Senior Manufacturing Engineer

Job Title:

Senior Manufacturing Engineer

Requisition

Location:

Commack, NY, US, 11725

Home-based Position:
No

Regular/Temporary:
Regular

Job Type: Full-Time

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.

• 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 Range
: $110,000 to $130,000 per year.

Compensation may vary based on applicant's work experience, education level, skill set.

The Senior Manufacturing Engineer at Bren‑Tronics, part of Ener Sys and manufacturer of advanced power solutions, is a key technical leader responsible for developing, optimizing, and sustaining manufacturing processes for battery production in a defense environment. This role focuses on driving operational excellence through advanced failure analysis, continuous process improvement, and rigorous adherence to military‑grade quality standards. The Senior Manufacturing Engineer will ensure efficient process transitions, maintain product integrity, reduce production costs, and uphold strict compliance with defense manufacturing protocols.

• Serve as the primary manufacturing representative on cross‑functional engineering teams to lead and coordinate the smooth transition of new defense battery products from design to production.
• Design, organize, and continuously improve battery assembly areas to meet evolving product specifications, Department of Defense (DoD) requirements, and production throughput goals.
• Lead initiatives to streamline and optimize manufacturing workflows, enhancing product quality, reducing cycle time, minimizing scrap, and maximizing output.
• Define requirements for specialized production equipment, tooling, fixtures, and test setups specific to high‑reliability, mission‑critical battery manufacturing.
• Drive compliance with defense quality standards (e.g., MIL-STD, AS9100, IPC) across all manufacturing processes and work instructions.
• Develop and deliver technical training to production teams to ensure full compliance with documented procedures, quality standards, and engineering requirements.
• Manage manufacturing engineering and act as a subject matter expert for battery‑specific manufacturing processes, materials, and technologies.
• Support audits, customer inspections, and quality assurance activities as needed to maintain defense manufacturing certifications.
• Determine the requirements for equipment, tools, fixtures and fulfill real‑time production needs for our manufacture operations.
• Monitor rework and…