Senior Mechanical Design Engineer, Battery Pack Design and Architecture

Senior Mechanical Design Engineer, Battery Pack Design and Architecture

Job Category
:
Engineering

Requisition Number
: SENIO
004201

• Posted :
  January 5, 2026
• Full-Time
• On-site

Showing 1 location

Greer, SC 29651, USA

Proterra offers a dynamic and supportive workplace where our employees can thrive personally and professionally. With cutting-edge facilities and groundbreaking projects, Proterra offers unique opportunities to grow, collaborate, and lead transformative changes in the electrification of heavy-duty transportation and equipment.

Our commitment to innovation extends beyond our battery solutions to our people, where we create an environment where everyone feels valued, supported, and empowered to drive change for the earth. Here at Proterra we strive to foster a culture of inclusivity, valuing diverse perspectives and encouraging bold ideas, allowing our employees to bring their full selves to work. Our employees benefit from competitive total rewards packages, and opportunities to develop professionally.

Position Overview:

The product development team is responsible for designing battery pack modules and system enclosures that define the direction of our future products. It is also responsible for maintaining and supporting current production programs to provide design-focused support and technical issue resolution.

As a member of this engineering team, you will work in engineering support role who is responsible for driving the mechanical design, system architecture, structural integrity, design documentation, and manufacturability of battery packs to ensure that we follow entire product development cycle till successful launch. This role combines deep mechanical engineering expertise with strong systems thinking, cross-functional leadership, and a drive for innovation and product excellence.

You will be the component manager for sub-system parts and support designs from the concept through production, ensuring compliance with safety, regulatory, thermal, vibration, structural, and manufacturability requirements.

About the Role – You will:

• Design high quality mechanical, electromechanical parts and assembly designs efficiently and with good modeling practices
• Develop cost effective, innovative and weight-optimized structural solutions to meet thermal, NVH, and crash safety requirements
• Create and manage detailed engineering drawings/design data (3D and 2D), utilizing Catia 3DExperience (3DX) by applying a high standard of Geometric Dimensioning and Tolerancing (GD&T)
• Participate in detailed DFMEA and DVP&R documentation creation
• Responsible for the development of technical project plans and schedules covering engineering activities, meeting all design control and product development SOP requirements
• Support the transition of designs from prototype to high-volume manufacturing, focusing on Design for Manufacturing (DFM) and Design for Assembly (DFA)

Your Experience Includes:

• Degree in Mechanical Engineering or related field; bachelor’s with 5+ years OR Master’s with 3+ industry experience in mechanical design
• Proficient in 3D CAD design and 2D drafting (including GD&T and Datum structuring) of mechanical components (3DX/CATIA experience is preferred)
• Experience in high and low volume manufacturing methods, especially in aluminum casting, extrusion, stamping, forging, injection molding, etc.
• Deep understanding of structural mechanics, fatigue analysis, thermal management principles and ability to interpret FEA/CFD analysis results
• Strong background with DFMEA, PFMEA, tolerance stack-up, etc.
• Strong problem-solving skills and the ability to perform root cause analysis

Additional Desired

Skills:

• Prior experience in high voltage battery systems, energy storage or EV industry is valued but not required
• Brief knowledge of battery electrical components (cells, modules, current collectors, busbars, module too pack integration etc)
• Knowledge of manufacturing processes unique to battery pack construction (e.g., laser welding, potting, sealing)

Designed and assembled in the United States, Proterra’s innovative battery platform offers industry-leading energy density, durability, performance and safety…