Senior Machinist – Machinist III 4-Axis 3D PAYCOR

NPB Technology Group

Elk Grove (CA)

On-site

USD 55,104 - 66,124

Full time

14 days+

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Benefits offered by this job

401(k) match

Health insurance

Health savings account

Life insurance

Paid time off

Vision insurance

Job summary

NPB Technology Group in Elk Grove, CA is seeking a Senior Machinist to program, set up, and machine complex 3D parts on a 4-axis horizontal CNC. This role emphasizes CAM programming, probing, and end‑to‑end ownership in a non‑production environment.

You will use Mastercam and Renishaw probing to optimize cycles, hold tight tolerances, and deliver high‑quality surfaces on demanding 4‑axis projects.

Qualifications

Hands‑on experience with 4‑axis machining on horizontal CNCs.
CAM programming for complex 3D parts.
Probing routines and in‑process inspection using Renishaw.

Responsibilities

Program and optimize parts using Mastercam or equivalent CAM software.
Machine complex parts with 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 for complex geometry.

Skills

4‑Axis machining

CAM programming

Mastercam

Renishaw probing

GD&T

Tools

Doosan NHP 8000

B‑Axis machining

Job description

Position:Senior Machinist – Machinist III 4-Axis 3D PAYCOR

Location: Elk Grove, CA

Job Id:118

# of Openings:1

Pay: $40.00 - $48.00 per hour

4‑Axis CNC Machining | Complex 3D Work | Mastercam / CAM Programming | Renishaw Probing

Location: Elk Grove, CA
Job Type: Full‑Time | On‑Site
Pay Range: $40.00 – $48.00 per hour (DOE)
Primary Machine: Doosan NHP 8000 Horizontal Machining Center | 4‑Axis (B‑Axis Rotary) | Pallet Changer

PLEASE READ BEFORE APPLYING (Important)

This is not a production operator role and not a “run existing programs” position.

If your experience is primarily:

CNC operation without programming responsibility
3‑axis VMC work only

This position is not a fit.

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.

Position Overview

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.

Your resume must clearly demonstrate most of the following:

Mastercam (preferred) or comparable CAM software (NX, Fusion, PowerMill, etc.)
Creation and optimization of 3D toolpaths for complex geometry
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
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

If your resume does not clearly show CAM programming, 4‑axis machining, and Renishaw probing experience, please do not apply.

Key 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

Renishaw Probing & Automation

Use Renishaw probing for setup, alignment, and verification
Write and modify probing routines and subroutines/macros for:
automated setup routines
work offset updates
feature verification and inspection checkpoints
Adjust machining strategy based on probing and inspection results

Fixturing & Setup Strategy

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

Troubleshooting & Optimization

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

Pay Range: $40.00 – $48.00 per hour (DOE)

Final hourly rate is based on demonstrated:

Renishaw probing and routine/subroutine proficiency
Ability to independently manage complex jobs

Search Keywords (Do Not Remove)

Senior Machinist, Machinist III, CNC Programmer Machinist, 4‑Axis Machinist, Horizontal Machining Center, Doosan NHP 8000, Pallet Changer, B‑Axis Machining, Mastercam, CAM Programmer, 3D Machining, Complex Geometry, Renishaw Probe, Renishaw Probing, Probing Routines, Probe Subroutines, Macro Programming, In‑Process Inspection, Productivity Plus, Precision Machining

Optional Candidate Note

This role is ideal for experienced machinists who enjoy high‑skill, complex work and prefer programming, probing, and process ownership over high‑volume production.

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