CNC Machinist

Bits to Atoms (YC S24); El Segundo (CA); On-site; USD 39,950 - 104,697; Full time

Benefits offered by this job

Stock options

Paid time off

401K (1:1 employer match up to 4% of salary)

Job summary

A pioneering technology startup in El Segundo is seeking a full-time CNC Machinist to manage end-to-end machining operations. The ideal candidate will have 2-4+ years of CNC machining experience, CAD/CAM proficiency, and strong communication skills. You will deliver high-end molds and prototype parts in a fast-paced environment while collaborating closely with engineering. The company offers competitive compensation and benefits, including stock options and a 401K plan.

Qualifications

• 2–4+ years of CNC machining experience required.
• Experience with mold making, high‑precision, or 3D surfacing is a bonus.
• Must be a U.S. Person per EAR and ITAR definitions.

Responsibilities

• Deliver high‑end molds and prototype parts on fast timelines.
• Manage full process from CAM programming to setup and machining.
• Collaborate with engineering to optimize designs for production.

Skills

CNC machining experience

Proficiency with CAD/CAM software

Ability to read CAD/CAM models

Strong communication skills

Tools

CNC vertical machines

CNC lathes

Job description

CNC Machinist – Bits to Atoms (YC S24)

Join us to apply for the CNC Machinist role at Bits to Atoms (YC S24).

Pay Range

This range is provided by Bits to Atoms (YC S24). Your actual pay will be based on your skills and experience — talk with your recruiter to learn more.

Base Pay

$29.00/hr - $76.00/hr

About the Job

Bits to Atoms has partnered with Hybron to fill its CNC Machinist (Level 3 or Senior Level) role. To learn more about Hybron, you can review their page here.

Company Overview

Hybron is a defense technology startup pioneering a new manufacturing process for fiber-reinforced polymer composites that enables complex parts to be produced with greater strength, lower cost, and at 10 - 100x the speed of traditional methods.

We were backed by the Northrop Grumman Technology Accelerator, and we have been the first to successfully develop composite compressor blades that were successfully tested in a fighter jet engine. Our current focus is applying our proprietary process to artillery shells, drone airframes, and gas turbine component production.

If you want to join a fast-growing company that is solving mission‑critical needs for the warfighter while reshoring U.S. manufacturing, then we want to speak with you.

About the Role

This is a full‑time, in‑person role at our El Segundo pilot facility.

As a CNC Machinist, you’ll work in a fast‑paced, hands‑on environment focused on machining molds and components for both production and prototyping. You’ll collaborate with the engineering team to provide manufacturing feedback, help manufacture and repair tooling as needed, and support the build of high‑end composite assemblies.

You’ll take ownership of machining operations end‑to‑end, from CAM programming to setup and machining, ensuring timely delivery of high‑precision molds and prototype parts. The ideal candidate is detail‑oriented, communicates clearly, and thrives in a high‑accountability shop environment.

Requirements

• 2–4+ years of CNC machining experience
• Bonus: Mold making, high‑precision, or 3D surfacing
• Proficiency with CAD/CAM software (Onshape, Autodesk Fusion CAM, or equivalent)
• Experience with CNC vertical machines and CNC lathes
• Ability to read and interpret CAD/CAM models, GD&T, and technical drawings
• Strong communication and collaboration skills
• U.S. Person status pursuant to EAR and ITAR definitions

Responsibilities

• Deliver high‑end molds and prototype parts on fast timelines
• Manage full process from CAM programming to setup and machining
• Collaborate with engineering to provide manufacturing feedback and ensure designs are optimized for production
• Co‑own materials and tooling operations, including: Material purchasing, Tooling acquisition, Standardizing tooling within the shop
• Communicate project timelines, setbacks, and updates clearly
• Perform tooling selection, setup, and optimization for composites and metals
• Maintain and calibrate shop equipment
• Help keep a clean, organized, and professional work environment
• Develop and refine CAM templates and fixturing methods for scalable production
• Contribute to machine and tooling acquisition for high‑end and mass‑production work
• Gain exposure to advanced composites manufacturing workflows
• Potential to grow into Lead Machining Technician or Manufacturing Engineer roles

Benefits

• Stock options
• Paid time off
• 401K (1:1 employer match up to 4% of salary)