▶ Apply Senior CNC Machinist Elk Grove, California

• Posted on September 2, 2026 Published By Rodney Nelson Trillium Engineering Services is seeking a highly skilled Senior Machinist (Machinist III) with extensive hands-on experience programming, setting up, and machining large, complex components on Horizontal Boring Mills (HBM).

Pay Range:

$40.00

• 48.

00 per hour, depending on experience. This is not a production CNC operator position. The ideal candidate will have the ability to independently take ownership of custom, one-off, and short-run machining projects from blueprint interpretation and job planning through CNC programming, custom fixturing, setup, machining, and inspection. This position offers a high level of technical responsibility and autonomy. The successful candidate will also serve as a technical resource for less experienced machinists and contribute to tooling, cutter selection, fixturing, and process-development decisions. Important Qualifications Applicants should have demonstrated experience in most of the following areas:

• CNC programming using Mastercam or similar CAM software
• Setup and operation of Horizontal Boring Mills
• Large-part and large-weldment machining
• Designing, fabricating, and modifying custom fixtures
• Safe rigging and handling of large components using overhead cranes
• Advanced blueprint reading and GD&T interpretation
• Machining stainless steel and structural/specialty alloys
• Independently managing machining jobs from programming through completion
• Working with minimal supervision in a custom job-shop environment
• Candidates whose experience is primarily limited to running existing CNC programs, operating small vertical mills, or performing high-volume repetitive production work may not be a fit for this position. Key Responsibilities CNC Programming & Machining
• Program complex parts using Mastercam or comparable CAM software
• Set up and operate Horizontal Boring Mills
• Machine large, heavy, irregular, and high-value components
• Develop efficient machining strategies for one-off and short-run projects
• Establish machining approaches that account for distortion, deflection, vibration, and thermal movement
• Hold tight tolerances on complex and distortion-prone components
• Perform first-article and in-process inspections
• Troubleshoot machining and dimensional issues as they arise Custom Fixturing & Job Planning
• Design, fabricate, and modify custom fixtures and workholding
• Plan complete machining setups before cutting material
• Consider load paths, workpiece deflection, thermal movement, accessibility, and rigidity
• Develop solutions for challenging alignment and workholding requirements
• Troubleshoot vibration, access, alignment, and setup challenges
• Provide input on manufacturability and process improvements Crane & Large-Part Handling
• Safely rig, lift, rotate, and position large components Perform complex setups involving overhead crane movement and repositioning Understand center of gravity, load limits, rigging requirements, and safe handling practices Maintain a strong focus on safety when working with large and high-value components Technical Leadership
• Serve as a senior technical resource on the shop floor
• Mentor and support less experienced machinists
• Recommend machining approaches, tooling, and best practices
• Assist with cutter, tooling, and fixturing selection
• Provide input regarding specialty tooling and cutters needed for upcoming projects
• Help improve machining processes, setup strategies, and overall shop efficiency Benefits
• 401(k)
• 401(k) with 6% company match
• Dental insurance
• Flexible spending account
• Health insurance
• Health savings account
• Life insurance
• Paid time off
• Vision insurance Apply now! Application Requirements To be considered, your resume should clearly identify your experience with:
• CNC programming and CAM software used
• Horizontal Boring Mills operated
• Largest parts/components you have machined
• Large weldment machining
• Custom fixture design and fabrication
• Setup and job-planning responsibilities
• Overhead crane and rigging experience
• Blueprint reading and GD&T
• Stainless steel and specialty/structural alloys Trillium Technical has been recruiting and placing Engineering professionals for over 30 years.

From Fortune 100 companies to small businesses, our philosophy remains the same: to achieve excellence by providing quality employees with an uncompromising level of service. We believe in honesty, integrity, and a simple philosophy of providing value to our customers and our employees. We strive to be unsurpassed in the recruitment and placement of Engineering professionals. Trillium is an Equal Opportunity Employer. By applying to this job, I agree to receive electronic communications including SMS text and email regarding future opportunities, referral bonus incentives, and other promotions from Trillium. You may opt out at any time from future communications by responding STOP to any electronic communication. You may view our full privacy policy at https://trilliumstaffing.com/jobs/privacy/ . Trillium offers a comprehensive benefit package that includes the ability to participate in health insurance and retirement plans, paid holidays, state required leave, and other leave, if applicable. Trillium's offerings are dependent on the state in which the assignment is located, length of time worked, and may change depending on assignment. Benefit packages for direct hire placements vary based on the client company. Want to apply for Senior CNC Machinist? To apply for Senior CNC Machinist enter your email address below. If you have an account with indeed.com, you can also Apply with Indeed Contact Us if you have any questions Contact Rodney Nelson (602) 753-0889 Have a question about this job? Our intentions are to fill job vacancies as quickly as possible with qualified candidates. We are always accepting applications if a time sensitive job has an application deadline it is noted in the job description. Click on "Apply" to begin the apply process.