Battery Pack Process Engineer — Hands-On, Scale-Up

Stealth-mode Battery Startup; United States; On-site; USD 90,000 - 130,000; Full time

Job summary

Stealth-mode Battery Startup in the United States is seeking a Pack Process Engineer to turn evolving battery pack designs into safe, repeatable, and scalable assembly processes. This hands-on role involves assembling or tearing down packs, troubleshooting, designing quick fixtures, running experiments, analyzing data, and writing SOPs.

You will own key pack assembly processes from prototype through production ramp, collaborating with design, test, quality, and operations to improve quality,

Qualifications

• Bachelor’s or Master’s degree in mechanical, manufacturing, or industrial engineering discipline—or equivalent practical experience.
• Experience in manufacturing engineering, process engineering, new product introduction, or hardware-focused roles.
• Experience developing pack assembly processes through production scale-up and/or technology transfer.
• Strong mechanical aptitude and willingness to work directly with tools, parts, fixtures, and equipment.
• Ability to create quick, fit-for-purpose fixture and tooling designs using CAD.
• Experience planning structured experiments, analyzing results, and translating findings into process decisions.
• Ability to write clear, concise SOPs and work instructions for manufacturing teams.
• Understanding of engineering drawings, tolerances, fasteners, adhesives, joining methods, and basic metrology.
• Approach to ambiguous manufacturing problems via observation, hands-on testing, and data analysis.
• Effective communication with engineers, technicians, operators, and cross-functional partners.

Responsibilities

• Develop, document, and improve battery pack assembly processes from prototype.
• Perform hands-on mechanical assembly, rework, troubleshooting, and teardown of packs.
• Provide direct engineering support during builds, process trials, and production ramp.
• Translate product requirements and engineering drawings into practical, repeatable processes.
• Characterize critical process parameters and process windows, optimizing for OEE.
• Support PFMEAs, control plans, capability studies, gauge R&R studies, and other analyses.
• Influence pack design to improve manufacturability based on process feedback.
• Create operator-friendly SOPs, work instructions, process specifications, and diagnostics.

Skills

Mechanical aptitude

SOP writing

Data analysis

Process development

New product introduction

Engineering drawings

Communication

Education

Bachelor’s or Master’s in mechanical/manufacturing/industrial engineering or equivalent

Tools

CAD

Job description

Stealth-mode Battery Startup in the United States is seeking a Pack Process Engineer to turn evolving battery pack designs into safe, repeatable, and scalable assembly processes. This hands-on role involves assembling or tearing down packs, troubleshooting, designing quick fixtures, running experiments, analyzing data, and writing SOPs.

You will own key pack assembly processes from prototype through production ramp, collaborating with design, test, quality, and operations to improve quality,