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 a skilled CNC Machinist to join our advanced prototyping facility in Los Angeles. This hands‑on role focuses on 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 detail‑oriented machinist with strong machining fundamentals, mechanical aptitude, and a commitment to producing high‑quality precision parts.

The ideal candidate is comfortable working in a fast‑paced prototyping environment, collaborating with engineers, troubleshooting machining challenges, and adapting to evolving project requirements. This is an opportunity to work with advanced manufacturing equipment and contribute directly to the development of next‑generation optical and aerospace technologies.

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

CNC Machining & Operations

• Operate CNC milling machines, including 3-axis, 4-axis, and 5-axis equipment, and CNC lathes to manufacture precision components.
• Machine complex parts from engineering drawings, CAD models, and established machining instructions.
• Monitor machining operations, making necessary adjustments to maintain dimensional accuracy, surface finish, and part quality.
• Select and change cutting tools, monitor tool wear, and identify machining issues during production.
• Perform first‑piece and in‑process inspections using precision measuring instruments.
• Read and interpret engineering drawings, machining specifications, and geometric dimensioning and tolerancing (GD&T).
• Identify and troubleshoot common machining issues related to tooling, materials, surface finish, and dimensional accuracy.
• Perform deburring, finishing, and other post‑machining operations as required.

Prototyping & Engineering Collaboration

• Work closely with mechanical, optical, and manufacturing engineers to produce prototype and low‑volume precision components.
• Provide practical feedback on machining challenges, material behavior, and part manufacturability.
• Support rapid design iterations, engineering changes, and one‑off component fabrication.
• Assist with the fabrication and modification of custom fixtures, jigs, and tooling.
• Work with challenging materials, including titanium, stainless steel, aluminum, engineering plastics, and specialty alloys.
• Support additional fabrication processes, including wire EDM, waterjet…