Mechanical Design Intern (Fall 2026)

About the Job

Peak Energy is seeking a Mechanical Design Intern to join the Energy Storage Systems (ESS) team. The intern will work on mechanical designs of utility-scale sodium-ion energy storage systems (ESS).

Responsibilities

• Focus on design areas of need, which may include: module enclosure, adhesives, plastic component design, high current conductors, communications harnessing
• Interface tightly with partners such as thermal and structural analysts and other design functions to inform design decisions
• Drive and participate in a culture of rapid prototyping and testing
• Support validation of Peak products from concept through field deployment
• Ensure a smooth transition from maturing product to mass production
• A great team spirit and get-it-done attitude

Minimum Qualifications

• Pursuing a mechanical engineering, engineering physics, or equivalent degree
• Strong grasp of mechanical and thermal engineering fundamentals
• Basic understanding of power electronics and electrical fundamentals
• Familiarity with 3D CAD software
• Experience with building prototypes
• Passion for renewable energy, sustainability, and driving positive environmental impact through technology innovation

Preferred Qualifications

• CATIA V6 or Siemens NX experience
• Familiarity with simulation or analysis tools like MATLAB, FEA, or CFD

Benefits

• The pay for this role is $30/hr.
• Our competitive benefits package includes flexible time off, comprehensive medical, dental, and vision coverage, a strong 401(k) plan, and equity opportunities.

About the Company

Peak Energy is advancing globally proven Sodium-Ion battery systems as the storage standard for the new era of renewable energy on a resilient grid. We are backed by strategic investment and product partners such as TDK Ventures and Eclipse Ventures. We are a team of engineers, operators, entrepreneurs, and partners driven by a shared ambition to set the new performance standard for renewable energy and grid resilience.