Senior 5-Axis CNC Programmer

ESRhealthcare and EXEC STAFF RECRUITERS•El Segundo, CA

1d•$40 - $60•Onsite

About The Position

Senior 5-Axis CNC Programmer to join thei Manufacturing Team. In this role, you will be machining complex, flight-critical components with extreme precision—contributing directly to spacecraft that will leave Earth and return with life-changing materials manufactured in microgravity. This is a hands-on, high-impact role in a non-production, prototype-driven environment where you will work with cutting-edge equipment, collaborate directly with engineers, and operate with full ownership of your machining processes. Youll be surrounded by industry veterans in a culture that values humility, speed, and craftsmanship. Work Environment Autonomy and ownership. Responsible for print-to-part. Independent projects. One-off prototyping work. You rarely work on the same part twice. New 5-axis CNC machines. Premium tooling. Generous tooling and inspection budget. No need for personal tools. Single shift. No one else touches your machine. Clear aerospace environment. Pristine floors. Onsite in El Segundo, CA. 40-45 hours per week (over-time available with approvals). Flexible hours and generous benefits.

Requirements

5+ years of experience programming and operating 5-axis vertical machining centers (e.g., Haas UMC-1000/750, DMG MORI DMU, or similar) producing tight-tolerance aerospace or flight-critical components.
Proficiency in Mastercam for 3+2 and full simultaneous 5-axis toolpaths, including simulation and verification.
Deep understanding of G-code/M-code and advanced CNC program editing.
Experience machining exotic materials and applying GD&T principles.
Hands-on experience with precision inspection tools.
U.S. citizenship or lawful permanent residency (ITAR compliance).

Nice To Haves

10+ years of CNC machining experience, primarily in 5-axis milling environments.
5+ years of Mastercam experience, including post customization and optimization.
Skilled in custom workholding and fixture design, including modular dovetail, vacuum, and Lang-style clamping systems for small-lot prototype work.
Demonstrated mentorship or leadership within a high-precision machining environment.
Familiarity with CNC lathes, mill-turn, or live-tooling equipment — nice to have but not required.

Responsibilities

Precision Machining Machine complex aerospace components on 5-axis mills (Haas UMC1000 etc.) to tolerances of ±0.0005 in.
Execute the full print-to-part workflow with full autonomy, including CAM programming, custom fixturing, setup, machine operation, and inspection.
Machine exotic materials such as PEEK, Inconel, stainless steel, and carbon composite materials.
Design and execute custom fixturing and work-holding solutions for prototype parts.
CAM Programming & Optimization Program CAM toolpaths using software such as Mastercam, HSMworks.
Incorporate probing strategies and macros to reduce setup time and increase accuracy.
Continuously refine feeds, speeds, and tooling strategies to minimize cycle times while maintaining aerospace-grade quality.
Process Ownership & Engineering Collaboration Take end-to-end ownership of machining processes, including raw material selection, programming, setup, machining, inspection, and documentation.
Collaborate with engineering teams to provide Design for Manufacturability (DFM) feedback.
Develop and standardize best practices to improve shop efficiency and knowledge sharing.