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Applications Engineer - Battery Pack Systems

New Kensington, PA

 Who is Re:Build Manufacturing

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 America’s 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.

About Re:Build Battery Solutions

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 America’s next-generation industrial company.

Who we are looking for

Re:Build Battery Solutions is seeking an Applications Engineer to join our growing team developing advanced lithium-ion battery packs for automotive, aerospace, defense, industrial, and renewable-energy customers. The Applications Engineer will serve as a critical technical interface between our customers and internal engineering and manufacturing teams—supporting technical sales, quotation development, and early-stage design definition for battery pack programs.

This role requires both strong technical understanding of battery systems and excellent communication skills to translate customer requirements into clear technical and commercial proposals.

What you get to do

  • Serve as the primary technical liaison for new business opportunities, supporting the sales team with technical responses, customer Q&A, and proposal development.
  • Interpret customer specifications and requirements to define battery pack configurations, electrical and mechanical interfaces, performance targets, and validation needs.
  • Lead or support the preparation of cost and timing estimates for engineering and production quotations, collaborating with design, manufacturing, and supply-chain teams.
  • Develop technical proposal materials including system architecture descriptions, performance summaries, and compliance matrices.
  • Participate in customer design reviews and present Re:Build’s technical capabilities and solutions.
  • Support feasibility assessments and early-stage concept studies for new applications.
  • Maintain a deep understanding of Re:Build’s engineering, testing, and manufacturing capabilities to ensure accurate quoting and positioning.
  • Coordinate with engineering and operations teams to ensure smooth handoff from quote to program kickoff.
  • Contribute to continuous improvement of quoting tools, standard templates, and cost models.

What you bring to the Team

  • Bachelor’s degree in Mechanical Engineering, Electrical Engineering, or related technical field.
  • 3+ years of experience in applications engineering, technical sales, or product development—preferably in battery systems, electrification, or automotive components.
  • Strong understanding of lithium-ion battery technology, including cell formats, pack architectures, thermal management, and BMS fundamentals.
  • Demonstrated ability to read and interpret engineering drawings, specifications, and performance requirements.
  • Excellent written and verbal communication skills; ability to clearly present technical and commercial information to customers.
  • Proficiency with common engineering tools (e.g., SolidWorks, AutoCAD, Excel, or equivalent quoting tools).

Preferred Qualifications

  • Experience with DFMEA, DV/PV test planning, and manufacturing process flows for battery systems.
  • Familiarity with automotive or aerospace program lifecycles (RFQ, sourcing, development, SOP).
  • Hands-on experience building or testing battery packs or modules.
  • Strong project management and multi-functional coordination skills.

What You’ll Gain

  • Exposure to cutting-edge battery technologies across multiple industries.
  • Collaboration with a multidisciplinary team of engineers and manufacturing experts.
  • Opportunity to shape the front end of Re:Build’s customer engagement and growth strategy.

Location Requirement

Note: The position is based in our New Kensington, PA manufacturing plant.

The BIG payoff

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!

We want to work with people that reflect the communities in which we operate

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 accommodations.ta@ReBuildmanufacturing.com or you may call us at 617.909.6275.

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