Senior Machinist - Tooling and Fabrication

We are looking for a highly skilled Senior-Level Machinist to join our Tooling and Fabrication team in Simi Valley, CA. In this position, you will be responsible for setting up and operating both standard and specialized machining equipment to manufacture metallic and non-metallic parts. You will also program and run CNC machines, including Hybrid CNC mills, along with manual mills, lathes, grinders, bandsaws, and other shop equipment as required.

This role demands a solid understanding of machining processes, materials, tooling, and layout methods.

Offering a competitive hourly wage of $35–$40 based on experience, this role provides an opportunity to apply your expertise in a fast-paced automation environment. Our comprehensive benefits package includes Medical, Dental, Vision, 401(k), Life Insurance, Health Savings Account, Flexible Spending Account, Competitive Salary, and Paid Time Off. Join a company that encourages innovation and supports ongoing professional development.

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.

• Interpret engineering drawings and specifications to determine dimensions and tolerances.
• Program, set up, and operate HAAS CNC machines and Hybrid CNC mills.
• Set up and operate lathes, mills, and other manual/conventional machinery.
• Machine and grind parts to exact specifications.
• Select, design, fabricate, and install fixtures, tooling, and related accessories.
• Determine appropriate speeds and feeds based on material and tooling requirements.
• Inspect finished parts using precision measuring tools (e.g., micrometers, calipers, height gauges).
• Use computer systems to access files, print drawings, and review 3D models with tools such as eDrawings.
• Minimum of 5 years of CAD/CAM experience (Mastercam or RhinoCAM preferred).
• Carry out assignments from the Working Foreman and collaborate with team members as needed.

• Elevated noise levels from operating equipment.
• Exposure to hazards such as moving mechanical components.

• 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.

• High school diploma or equivalent.
• 7–10 years of practical machining experience (manual machining or similar).
• 5–8 years of CNC programming and operation experience.

• Vocational or technical certification in machining.
• 5–10 years of experience in a machining or fabrication setting.
• Strong math and mechanical skills.
• Effective written and verbal communication abilities.
• Advanced capability in blueprint reading and 3D model interpretation.
• Team-focused attitude with strong problem-solving skills.
• Ability to prioritize tasks, multitask, and perform well under pressure.

• Clear and professional communication skills.
• Positive attitude and strong work ethic.
• Dependable with consistent attendance and punctuality.
• Ability to follow instructions and work independently or collaboratively.
  
  Detail-oriented and well-organized.
• Able to work efficiently in a high-paced environment.
• Willing to take on additional responsibilities as assigned.

• Thorough knowledge of feeds and speeds for a variety of tooling, including:
• End mills
• Drills
• Reamers
• Shell mills
• Ability to estimate machining time for:
• Simple profile components
• Complex parts made from stainless steel or other hard materials

This job description has been designed to indicate the general nature and level of work performed by employees within this classification. It is not intended to contain or be interpreted as a comprehensive inventory of all duties, responsibilities, and…