Mechanical Engineer - Intern

Durin Mining Technologies • El Segundo, CA

7d • Onsite

About The Position

Durin is developing technologies to make raw materials less of a constraint on civilization’s progress, with the goal of becoming the foundation of the global supply chain. The Mechanical Engineer Intern will design and develop mechanical assemblies, taking concepts from sketches through production-ready drawings and owning sub-assemblies. The role is hands-on, with 30–50% of time spent in the shop assembling, modifying, and repairing designs. It also involves rapid prototyping, testing hardware to failure, and coordinating with machine shops and suppliers. The position is not suited to someone seeking fully remote work or a slow-paced, highly structured corporate environment.

Requirements

• CAD fluency, including top-down design and managing large assemblies without breaking references.
• Understanding of manufacturing methods, including the differences between 3-axis and 5-axis machining and the use of appropriate tolerances.
• Experience building things that move.
• Ability to perform free-body diagrams and hand calculations to evaluate design safety.
• Basic GD&T skills and the ability to create machinist-readable drawings.
• Comfort using a drill press, band saw, and soldering iron.
• A portfolio or link showing a physically built project is required when applying; applicants should describe what went wrong and how they fixed it.

Nice To Haves

• Formula SAE, Baja, Solar Car, rocketry, or BattleBots experience is highly preferred.

Responsibilities

• Model mechanical assemblies in CAD, progressing from sketches to production-ready drawings and owning sub-assemblies.
• Spend 30–50% of working time in the shop assembling, modifying, and repairing designs.
• Use 3D printing, laser cutting, and CNC machining to rapidly prototype and validate ideas.
• Design test fixtures and test hardware to identify failure points.
• Communicate with machine shops and suppliers to ensure parts are made to specification and delivered on time.
• Analyze mistakes and broken parts, identify root causes, and make fixes.

What This Job Offers

• Job Type: Full-time
• Career Level: Intern
• Education Level: No Education Listed