CNC Senior Set-up Programmer/Machinist

About the Role

We are seeking an experienced, detail-oriented CNC Set-up Programmer/Machinist to join the Manufacturing team of our aerospace and defense manufacturing facility. This role emphasizes CNC Mill and Lathe machinist expertise while offering an opportunity to grow into a high-value Senior Machinist position. The role is critical for front-end acceptance of client requests, implementation of machined part production, router development, and first article execution. Ideal candidates will have experience in precision CNC set-up, machining principles, and MasterCAM programming to efficiently launch new parts into production.

This is a 100% on-site position located within 25 miles of Carson, CA. Opportunity A&R is a contract manufacturer experiencing strong demand growth, offering career development and progressive earning power.

Responsibilities

• CNC Programming & Setup
  • Set up CNC mill and lathe operations based on customer blueprints and 3D models for new customer requests.
  • Perform first article programming, setups, dry runs, and edits to validate program accuracy and efficiency.
  • Conduct in-process inspections to verify dimensions during first article production runs.
  • Train machine operators on setup sheets, fixturing, and safe operation of new programs.
  • Identify ideal cutter selection and fixtures.
  • Utilize MasterCAM to create G-code programs from model-based definitions and blueprints for machining operations.
• Senior Machinist
  • Develop and update manufacturing router sequences, Bill of Materials, and Work Centers for new and existing product lines, including estimated setup and cycle times to maintain an accurate ERP system.
  • Select tooling, fixturing, and machine allocation based on material and part geometry for machining using 2 to 4-axis lathes, 3 and 4-axis horizontal and vertical mills, 5-axis mills, and conventional machining equipment.
  • Collaborate with Production and Quality teams to ensure Design for Manufacturability (DFM) aligns with the most efficient manufacturing methods and AS9100 compliance.
  • Organize the machine shop priorities and workflow to meet customer requirements.

Requirements

• 7+ years of experience in aerospace CNC machining, with demonstrated expertise in CNC setup of mills, lathes, and mill-turn machines.
• Proficiency with MasterCam (lathe, mill, and multi-axis) is required.
• Deep understanding of G-code, GD&T, blueprint reading, and aerospace tolerancing.
• Experience working in AS9100/AS9102-regulated environments.
• Familiarity with various aerospace alloys (e.g., titanium, Inconel, stainless steel, aluminum).
• This position requires use of information subject to the International Traffic in Arms Regulations (ITAR). All applicants must be U.S. persons (U.S. Citizen, U.S. Permanent Resident, Political Asylee, or Refugee).

Preferred Qualifications

• Experience in a “Make-to-Blueprint” job shop environment.
• Experience with Fanuc, HAAS, and DMG controllers.
• Experience and understanding of Master Routers (e.g., “Item Masters,” which require a Bill of Materials and Routing sequences for CNC operations) and/or willingness to learn.
• First article inspection (FAI) process experience per AS9102.
• Lean or Six Sigma training is a plus.
• Availability for 1st shift and overtime when required.

Skills

• Strong mechanical aptitude and machining knowledge.
• Ownership mindset and initiative in problem-solving.
• Ability to work cross-functionally with quality, operations, and sales teams.
• Attention to detail in both planning and execution.
• Clear, concise technical communication skills (verbal and written).

Benefits

• Be a strategic part of launching mission-critical aerospace components.
• Hands-on environment with autonomy and impact.
• Competitive compensation and benefits package (performance-based rewards).
• Fast-paced, growth-oriented company with a strong industry reputation.