Manufacturing Production Engineer

Job Title: Manufacturing Production Engineer

Department: Manufacturing Engineering

Reports To: Senior Director of Manufacturing

Position Type: Full-time

Peak Energy is the first American venture to advance globally proven sodium-ion battery systems as the storage standard for the new era of renewable energy on a resilient grid.

Sodium-ion is cheap, readily available, and safe — making it the leading contender in a rapidly evolving market.

Our leadership team is powered by decades of expertise in scaling gigawatt-level innovation at world-class companies such as Tesla, Northvolt, Apple, Powin, Enovix, Zipline, Solid Power, Sun Power, and Fluence. We are backed by strategic investment and product partners including TDK Ventures, Eclipse Ventures, and GM Ventures.

We recently announced America's first sodium-ion grid storage factory in Sacramento with production starting Q1 2027, and over $1B in signed customer commitments including Jupiter Power and Energy Vault.

Peak Energy is seeking a Manufacturing Production Engineer to support day-to-day production at our Sacramento factory. This role sits between process engineering and equipment sustaining: you're on the floor, troubleshooting equipment and process issues in real time, working with production to improve OEE, and driving mechanical and process improvements on the machines and lines you own.

This posting is open to all experience levels. Junior engineers will spend more time executing troubleshooting and improvement work under guidance. Senior engineers will be expected to own equipment and process areas end to end, lead root cause investigations, and mentor others. Both are useful to us right now.

Depending on the needs of the factory and candidate interest, this role has room to grow into robotics, laser welding, two-part (2K) dispense applications, and rigging of assembly components for top-level unit assembly.

• Serve as a front-line technical responder for equipment downtime and process disruptions on the production floor, coordinating with maintenance teams.
• Drive root cause analysis on equipment and process failures and own corrective and preventive actions through closure across mechanical, pneumatic, and electrical scopes.
• Build out and maintain equipment documentation: PM schedules, spare parts lists, troubleshooting guides, and work instructions.
• Manage spare parts inventory and vendor relationships for critical equipment components.
• Partner daily with production supervisors and operators to track and improve OEE (availability, performance, and yield) through improvement projects.

• Design and implement engineering changes to tooling, fixtures, and equipment to improve reliability, safety, ergonomics, or throughput.
• Write and maintain PFMEAs, control plans, and standard work in support of process changes.
• Participate in DFM/DFA reviews and feed floor-level issues back to design engineering.
• Coordinate with quality engineering on nonconformances tied to equipment or process issues.
• Scope, quote, and justify small capital projects for equipment upgrades or replacements in addition to continuous improvement projects (kaizen, 5S, and similar).
• Train operators and technicians on new equipment, tooling, and process changes.
• Support changeover reduction and cycle time improvement efforts on assigned lines or machines.

• Bachelor's degree in a technical field (Mechanical, Electrical, Manufacturing, Industrial Engineering, or similar), or equivalent practical experience in a manufacturing/production environment.
• Strong mechanical aptitude and hands-on…