Senior Machinist – Machinist III PAYCOR

GNB KL Group • Elk Grove, CA

4d • Onsite

About The Position

We are seeking a highly skilled Senior Machinist (Machinist III) to support large, complex, one‑off machining work. This position requires the ability to program, plan, fixture, set up, and machine large parts independently, with minimal supervision. You will also serve as a technical leader, supporting less experienced machinists and contributing to tooling, cutter selection, and process decisions for future work. This role is for a Senior Machinist (Machinist III) with hands‑on experience programming, setting up, and machining large custom parts on Horizontal Boring Mills, including custom fixturing and overhead crane handling. This is not a production CNC operator role. If your experience is primarily running existing programs, small vertical mills only, or high‑volume/repetitive production work, this position will not be a fit. Applicants without real large‑part HBM experience and CNC programming capability will be screened out.

Requirements

• CNC programming experience (Mastercam or similar CAM software)
• Setup and operation of Horizontal Boring Mills (HBM)
• Machining large parts and large weldments
• Designing and building custom fixturing
• Safe rigging and handling of large parts using overhead cranes
• Advanced blueprint reading and GD&T interpretation
• Machining stainless steel and structural / specialty alloys
• Independently owning jobs from programming through completion
• Working with minimal supervision in a custom job‑shop environment
• Clear demonstration of CNC programming + HBM + large‑part experience on resume
• Resume must clearly state: CNC programming experience (CAM software used), Horizontal boring mills operated, Largest parts you’ve machined, Fixturing and setup responsibility, Crane or rigging experience

Nice To Haves

• Semi‑retired machinists who enjoy hands‑on CNC programming and large‑part machining without the pressure of production quotas.

Responsibilities

• Program complex parts using Mastercam or similar CAM software
• Set up and operate Horizontal Boring Mills
• Machine large, heavy, irregular, high‑value components
• Develop efficient machining strategies for one‑off and short‑run work
• Hold tight tolerances on distortion‑prone parts
• Perform first‑article and in‑process inspections
• Design, fabricate, and modify custom fixtures
• Plan setups considering load paths, deflection, and thermal movement
• Troubleshoot machining, alignment, vibration, and access challenges
• Support manufacturability and continuous improvement efforts
• Safely rig, lift, rotate, and position large components
• Execute multi‑step setups involving overhead crane repositioning
• Understand center of gravity, load limits, and safe handling practices
• Act as a senior technical resource on the shop floor
• Mentor Machinist I & II team members
• Recommend machining approaches and best practices
• Assist with tooling, cutter, and fixturing selection
• Provide input for ordering specialty tools and cutters for upcoming jobs

Benefits

• 401(k)
• 401(k) 6% Match
• Dental insurance
• Flexible spending account
• Health insurance
• Health savings account
• Life insurance
• Paid time off
• Vision insurance

What This Job Offers

• Job Type: Full-time
• Career Level: Senior
• Education Level: No Education Listed