Senior Machinist - Tooling and Fabrication

Join ATC Automation as a Senior Machinist located in Simi Valley, CA

We are seeking a skilled Senior Level Machinist to join our Tooling and Fabrication team in Simi Valley, CA. In this role, you'll set up and operate conventional and specialized machining equipment to fabricate both metallic and non-metallic parts. You will also program and operate CNC machines, Hybrid CNC Mill, Manual Mill, Lathe, grinders, bandsaws and other machine shop equipment based on project needs.

This position requires strong knowledge of machine shop practices, materials, tooling, and layout techniques.

With a competitive hourly rate ranging from $35-$40 depending on experience, your expertise will be valued and rewarded as you tackle challenges head-on in the ever-evolving automation industry. You can get great benefits such as Medical, Dental, Vision, 401(k), Life Insurance, Health Savings Account, Flexible Spending Account, Competitive Salary, and Paid Time Off. Take the next step in your career and become part of a forward-thinking culture that thrives on professional growth.

Who We Are

Since 1977, ATC has been redefining what's possible in industrial automation. From concept to commissioning, we partner with leading brands across the globe to design and deliver custom machinery that drives efficiency, precision, and long-term performance. Our automation expertise spans critical industries that shape the way we live and move-Life Science, Transportation, Consumer Products, and General Industry.

Primary Responsibilities

• Read and interpret engineering drawings and specifications to determine part dimensions and tolerances.
• Program, set-up and operate HAAS CNC Machine and Hybrid CNC Mill.
• Set up and operate lathes, mills, and other conventional and manual machinery.
• Machine and grind components to precise specifications.
• Select or design, fab and install appropriate fixtures, cutting tools, and accessories.
• Calculate proper speeds and feeds based on material type and tooling.
• Use precision measuring instruments (e.g., micrometers, calipers, height gauges) to verify part accuracy.
• Use computers to locate files, print drawings, and inspect 3D models using tools like eDrawings.
• CAD/CAM 5 year minimum (Master CAM or Rhino CAM a plus).
• Perform work assignments from the Working Foreman and collaborate with the team as needed.

Physical Requirements

• Ability to stand for extended periods.
• Lift and move objects weighing:
  Up to 50 lbs occasionally;
  Up to 25 lbs frequently;
  Up to 10 lbs constantly.
• Use hands and fingers to handle or feel materials and tools.
• Ability to bend, push, pull, and reach overhead.

Work Environment

• High noise levels from operating machinery.
• Exposure to physical hazards such as moving machine parts.
• Breathing fumes, dust, and mist; exposure to oils and fluids.

Minimum Qualifications

• High school diploma or equivalent.
• 7 - 10 years of hands-on machining experience (Manual Machining or similar).
• 5 - 8 years of hands-on CNC programming and operating experience.

Preferred Qualifications

• Vocational or technical certification in machining.
• 5–10 years of experience in a machining or fabrication environment.
• Exceptional math and mechanical aptitude.
• Clear written and verbal communication skills.
• Highly skilled with blueprint reading and 3D model interpretation.
• Team-oriented mindset and strong problem-solving skills.
• Ability to plan, multitask, and perform under pressure.

Additional Skills & Traits

• Effective communicator—both written and verbal.
• Positive and professional demeanor.
• Reliable attendance and punctuality.
• Able to follow directions and work independently or as part of a team.
• Organized and detail-oriented.
• Ability to work efficiently in a fast-paced environment.
• Willingness to perform other duties as assigned by management.

Machining-Specific Skills

• Strong understanding of feeds and speeds for various tools, including:
  Endmills, Drills, Reamers, Shell mills.
• Ability to estimate machining times, including:
  Very basic profile parts;
  More complex parts made from stainless steel or other hard materials.

Disclaimer

This job description has been designed to indicate the general nature and level of work performed by employees within this…