Lead CNC Machinist - Precision Prototyping

At Observable Space, we're redefining how humanity observes and connects with the universe. We're a vertically integrated, high-growth, space technology company building industry-leading precision optics platforms for Earth and in space. Our systems are trusted by thousands of customers, including NASA, JPL, SpaceX, Boeing, RTX, the US Space Force and the U.S. Department of War, leading research institutions and international partners.

We combine precision opto-mechanical hardware, embedded compute, cloud orchestration, and developer-friendly APIs into world class products at scale with in-house manufacturing. From advanced ground stations, on-orbit sensor suites, free space optical lasercom, to distributed compute platforms, we deliver the foundational systems enabling continuous, real-time navigation, observation, and communication in space.

Observable Space is backed by top-tier institutional investors including Lux Capital, Upfront Ventures, RTX Ventures, Detroit Venture Partners and Embedded Ventures. To learn more, visit observable.space.

Observable Space is seeking an experienced CNC Machinist / Programmer / Setup Specialist to join our advanced prototyping facility in Los Angeles. This is a hands‑on role focused on programming, setting up, and operating CNC equipment to manufacture complex, high‑precision components for advanced optical, aerospace, and mechanical systems.

Our facility supports rapid prototyping and low‑volume manufacturing of challenging components using materials such as aluminum, titanium, stainless steel, specialty alloys, and glass. We are looking for a versatile machinist who can independently take a part from engineering drawing or CAD model through CAM programming, machine setup, machining, and final inspection.

The ideal candidate combines strong technical machining expertise with practical problem‑solving skills and a collaborative approach to working with engineers. You will play an important role in improving manufacturability, developing machining processes, and supporting the transition of prototype designs into production.

This position offers a flexible work environment, with occasional evening or weekend availability required to support time‑sensitive projects.

CNC Programming, Setup & Machining

• Program, set up, and operate multi‑axis CNC milling machines, including 3‑axis, 4‑axis, and 5‑axis equipment, as well as CNC lathes with live tooling.

• Develop, modify, and optimize CNC programs using Mastercam, Fusion 360, or comparable CAM software.

• Independently perform machine setups, including tooling selection, work offsets, fixture installation, tool probing, and program verification.

• Interpret CAD models, engineering drawings, and GD&T requirements to manufacture precision components to specification.

• Select appropriate cutting tools, machining strategies, speeds, and feeds based on material properties, part geometry, and tolerance requirements.

• Perform first‑article and in‑process inspections using precision measuring instruments to ensure dimensional accuracy and quality.

• Troubleshoot machining issues, optimize cycle times, and improve part quality and repeatability.

Prototyping & Manufacturing Development

• Collaborate directly with mechanical, optical, and manufacturing engineers to evaluate designs and recommend improvements for manufacturability.

• Develop machining strategies for complex geometries, tight‑tolerance components, and challenging materials.

• Design and fabricate custom fixtures, work holding solutions, jigs, and tooling for prototype and low‑volume production.

• Support rapid design iterations, engineering changes, and one‑off component fabrication.

• Contribute to the development and documentation of…