Lead CNC Machinist

Aerotek; California (MO); On-site; USD 85,000 - 125,000; Full time

Benefits offered by this job

401K

Medical Insurance

Dental Insurance

Vision Insurance

Paid Time Off

Sick Pay

Job summary

Aerotek in Santa Ana, CA seeks a Lead CNC Machinist to lead high-precision aerospace manufacturing on a day shift (6am–2:30pm) with overtime opportunities. You will set up and operate manual and CNC equipment, interpret blueprints, mentor apprentices, and ensure aerospace-quality results.

Ideal candidates will provide technical leadership, maintain strict tolerances, coordinate with engineering, and drive lean 5S improvements on the shop floor.

Qualifications

• Experience leading CNC machining in aerospace environments.
• Ability to read drawings and interpret GD&T.
• Proven track record of maintaining tight tolerances and high quality.

Responsibilities

• Set up, program (when required), and operate manual and CNC machines.
• Interpret drawings, work instructions, and CAD models.
• Inspect parts with precision instruments and adjust for dimensional accuracy.
• Mentor apprentices and junior machinists on safety and best practices.
• Troubleshoot machining issues and optimize tool paths and fixturing.
• Maintain machine and tool maintenance schedules and perform minor repairs.
• Uphold lean manufacturing principles and 5S in the work area.

Skills

CNC Machining

HAAS controls

GD&T

Blueprints reading

Lead/Supervisor

Team leadership

Aluminum/Steel

Quality standards

Tooling setup

Mentoring

Programming

Maintenance

Tools

CAD models

Precision measuring

5S Lean

Job description

Job Description

Lead CNC Machinist

We are seeking an experienced Lead CNC Machinist to join our large aerospace facility located in Santa Ana, CA. This is a day shift position, from 6am to 2:30pm, with opportunities for overtime both daily and on weekends. The ideal candidate will serve as a technical expert and working leader on the shop floor, setting up and operating equipment while ensuring quality standards are met. This role is crucial for producing high-precision components and tooling that adhere to aerospace specifications, all while maintaining productivity and consistency.

Responsibilities

• Set up, program (when required), and operate manual and CNC equipment including mills, lathes, routers, and grinders to machine composite tooling and hardware components.
• Interpret engineering drawings, work instructions, and CAD models to ensure accurate machining of complex geometries to tight tolerances.
• Monitor machining processes, inspect parts using precision measuring tools, and make necessary adjustments to maintain dimensional accuracy.
• Train and mentor apprentice and junior machinists, providing guidance on best practices, safety, and proper use of equipment.
• Troubleshoot and resolve machining issues, collaborating with engineering and manufacturing teams to optimize tool paths, fixturing, and workholding strategies.
• Ensure machine and tool maintenance schedules are followed, and perform minor maintenance or repairs as needed to minimize downtime.
• Maintain an organized and efficient work area following lean manufacturing principles including 5S and continuous improvement.
• Track job progress and communicate updates on workflow, bottlenecks, or tooling needs to the production supervisor or operations team.
• Assist with fixture and tooling development for custom composite layup molds or production hardware.
• Uphold the highest standards for quality, safety, and compliance with company and aerospace industry protocols.

Essential Skills

• Advanced knowledge of machining practices, materials (including aluminum, steel, and composite tooling board), and CNC operations.
• Ability to coach junior machinists, enforce quality standards, and lead with professionalism on the shop floor.
• Commitment to producing parts that meet or exceed aerospace-level tolerances and specifications.
• Skilled in diagnosing and resolving machining challenges and improving manufacturing efficiency.
• Adheres to SOPs, work instructions, and safety protocols, while contributing to continuous improvement initiatives.
• Extensive experience as a machinist in a high-precision manufacturing environment, preferably with exposure to composite tooling or aerospace.
• Proficiency with manual and CNC machinery; experience with HAAS, Fadal, or similar controls is preferred.
• Ability to read and interpret GD&T, blueprints, and engineering documentation.
• Proficient with precision measuring instruments such as micrometers, calipers, and dial indicators.
• Demonstrated ability to lead by example, train others, and contribute to a team-oriented environment.

Additional Skills & Qualifications

• Fabrication, production, blueprint reading, inspection, and assembling.
• Lead or supervisor experience.
• Aerospace and composite experience.

Why Work Here?

This is a direct hire position offering great benefits and long-term growth. Being a family-run company, there are numerous opportunities to cross-train and grow within the organization.

Work Environment

The facility is a large complex composed of 10 interconnected buildings, each housing different departments that work on various projects. There are currently around 190 staff members on site, with potential growth to 240. The company has recently expanded by acquiring another site across the street.

Job Type & Location

This is a Permanent position based out of Santa Ana, CA.

Pay and Benefits

The pay range for this position is $85000.00 - $125000.00/yr.

401K, medical, dental, vision, PTO, sick pay

Workplace Type

This is a fully onsite position in Santa Ana,CA.

Application Deadline

This position is anticipated to close on Aug 20, 2026.