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Senior Machinist – Machinist III 4-Axis 3D PAYCOR

GNB KL GroupElk Grove, CA
Onsite

About The Position

We are seeking a highly skilled 4-Axis CNC Programmer/Machinist to support complex, high-value machining work requiring strong process ownership, advanced setup strategy, and in-process probing/verification. This role is centered on a Doosan NHP 8000 horizontal machining center with pallet changing and a B-axis rotary table. The successful candidate will own jobs end-to-end — CAM programming → fixturing → setup → probing → machining → inspection → optimization — in a custom, non-production environment. This is not a production operator role and not a “run existing programs” position. This role is for a Senior Machinist (Machinist III) who can program, set up, and machine complex 3D parts on a 4-axis horizontal machining center, and who has hands-on experience with Renishaw probing, including creating and modifying probing routines and subroutines/macros. Applicants without CAM programming + 4-axis experience + probing capability will be screened out.

Requirements

  • CNC Programming (Required) Mastercam (preferred) or comparable CAM software (NX, Fusion, PowerMill, etc.)
  • Creation and optimization of 3D toolpaths for complex geometry
  • Experience programming 4-axis machining using B-axis rotation
  • Ability to post, prove out, and safely run new programs
  • Solid understanding of work offsets, tool control, and collision avoidance
  • 4-Axis / Complex 3D Machining (Required) Hands-on experience machining complex 3D parts on horizontal machining centers
  • Effective use of 4-axis positioning (B-axis) to access multiple faces and reduce setups
  • Ability to hold tight tolerances and produce high-quality surface finishes
  • Advanced blueprint reading and GD&T
  • Renishaw Probing + Routine Programming (Required) Hands-on use of Renishaw probing systems for part pickup and alignment, work offset setting and updating, bore/boss location verification, and in-process inspection and verification checks
  • Ability to create and edit probing routines
  • Experience writing or modifying probe subroutines/macros to improve repeatability and reduce setup time
  • Workholding & Process Ownership (Required) Experience designing and building custom fixtures
  • Comfortable owning jobs independently from programming through completion
  • Horizontal machining experience strongly preferred
  • Experience using pallet-changing machines a plus
  • Resume must clearly include: CAM software used (Mastercam or equivalent), Description of 4-axis machining experience, Examples of complex 3D parts programmed and machined, Renishaw probing experience and what it was used for, Whether probe routines/subroutines/macros have been written or edited, Machine types operated (horizontal machining centers preferred)

Nice To Haves

  • Mastercam (preferred)
  • Horizontal machining experience strongly preferred
  • Experience using pallet-changing machines a plus

Responsibilities

  • Program and optimize parts using Mastercam or equivalent CAM software
  • Machine complex parts using 4-axis positioning on a horizontal machining center
  • Develop efficient machining strategies to reduce setups and improve accuracy
  • Prove out programs and optimize feeds, speeds, and toolpaths
  • Generate tooling strategies appropriate for complex geometry
  • Use Renishaw probing for setup, alignment, and verification
  • Write and modify probing routines and subroutines/macros for automated setup routines, work offset updates, and feature verification and inspection checkpoints
  • Adjust machining strategy based on probing and inspection results
  • Design and build fixtures for rigidity, accuracy, and repeatability
  • Plan setups to minimize part handling and eliminate secondary operations
  • Manage deflection, distortion, and access challenges through smart workholding
  • Diagnose and correct chatter, surface finish issues, tool wear, and alignment problems
  • Modify programs and processes based on inspection data
  • Improve repeatability, first-article success, and cycle efficiency
  • Serve as a technical resource for CNC machining and probing practices
  • Support continuous improvement in CAM workflows and shop standards
  • Provide input on tooling and cutter selection for upcoming work

Benefits

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

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