[ engineering ]

Senior Machinist / R&d Specialist

Location: Menlo Park, California
Work mode: Hybrid
Type: full time
Listed: Sep 23, 2026

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[ About this role ]

Mainspring Energy is seeking a Senior Machinist / R&D Specialist for their Menlo Park facility. This role involves supporting the engineering development lab by programming, setting up, and operating CNC machines, vertical mills, lathes, and traditional machines to produce complex R&D prototype parts from metals and composite materials.

Skills and focus areas

precision machining
cnc programming
vertical mill operation
lathe operation
composite material machining
metal machining
reading technical drawings
quality control
safety standards
equipment maintenance

Summary written by Ramai from the original posting. Full details and requirements are on Mainspring Energy’s careers page.

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