Machines Jobs in Riverside, CA (NOW HIRING)

Job Title: Machinist Senior

Location: Irvine, CA 92618

Work Arrangement: Onsite

Employment Type: Contract

Duration: 06 Months

Pay Rate: $31.00 – $35.00/hr. on W2

Shift: 6:00 AM – 2:30 PM

Domain: Manufacturing / Machining

Deadline: 9/12/2026

Skills Required

Primary Skills:

• Wire EDM Programming, Setup & Operation
• EDM Sinker Machine Operation
• CNC & Conventional Machining
• Engineering Blueprints & GD&T
• Precision Measurement & Inspection
• Machine Setup & Troubleshooting

Secondary Skills:

• Statistical Process Control (SPC)
• Lean Manufacturing
• Continuous Improvement
• Machine Shop Mathematics & Trigonometry
• Manufacturing Documentation
• Precision Measuring Instruments

Position Overview

We are seeking a Machinist Senior to operate conventional and CNC machining centers, Wire EDM, and EDM Sinker machines to manufacture high-precision components. The ideal candidate will have strong experience with Wire EDM programming and setup, EDM Sinker operation, blueprint/GD&T interpretation, precision inspection, and machining process optimization.

The role requires the ability to work with limited supervision while supporting productivity, quality, safety, and Lean Manufacturing initiatives.

Roles & Responsibilities

• Operate conventional and CNC machining centers on semi-complex jobs using blueprints, sketches, planning sheets, verbal instructions, and engineering documentation.
• Create, modify, and optimize Wire EDM programs using machine controls and/or offline programming software.
• Program, set up, and operate Wire EDM and EDM Sinker machines to manufacture precision components.
• Select appropriate wire type, size, power settings, flushing methods, and cutting strategies for rough and skim passes.
• Set up tooling, fixtures, work holding, machine offsets, datums, and reference points.
• Monitor cutting conditions and adjust machining parameters to maintain quality and prevent wire breaks.
• Perform unattended machining runs while ensuring safe and consistent machine operation.
• Read and interpret engineering blueprints, GD&T, specifications, and work instructions.
• Inspect finished parts using micrometers, calipers, indicators, height gauges, optical comparators, microscopes, and other precision measuring equipment.
• Verify critical tolerances, surface finish, taper, and geometric requirements while supporting first article and in-process inspections.
• Troubleshoot programming, setup, and machining issues and recommend corrective actions.
• Optimize machining processes to reduce cycle time and minimize scrap.
• Maintain setup sheets, tooling documentation, and program revision records.
• Set up and operate multiple production machines for cutting, shaping, drilling, reaming, forming, and deburring operations.
• Align and secure workpieces using standard fixtures and established setup methods.
• Install and adjust cutting tools based on material type and machining requirements.
• Adjust machine feeds, speeds, and depth of cut to produce quality parts according to manufacturing documentation.
• Perform SPC activities and maintain equipment cleanliness and reliability.
• Actively participate in Lean Manufacturing and continuous improvement initiatives.
• Comply with all company safety policies and procedures and maintain a clean, organized work area.
• Perform other related duties as assigned.

Minimum Qualifications

• Minimum 3 years of related machining experience, preferably with Wire EDM machining.
• Experience programming, setting up, and operating Wire EDM machines.
• Experience operating EDM Sinker machines is required.
• Ability to independently perform machine setups with limited supervision.
• Strong ability to read and interpret engineering blueprints, GD&T, specifications, and work instructions.
• Proficiency with precision measuring instruments, including:
• Micrometers
• Calipers
• Indicators
• Optical comparators
• Height gauges
• Microscopes
• Working knowledge of machine shop mathematics, including trigonometry.
• Experience troubleshooting machining processes and optimizing cycle times.
• Familiarity with Statistical Process Control (SPC) methodologies.
• Understanding of Lean Manufacturing principles and continuous improvement practices.
• Ability to maintain machining documentation, setup sheets, tooling lists, and program revisions.
• Strong verbal, written, and interpersonal communication skills.
• Ability to work effectively in a collaborative team environment.

Preferred Qualifications

• Experience using manufacturing software systems and job-specific applications such as PMR, TORS, email, and employee self-service systems.
• Demonstrated commitment to teamwork, continuous learning, and performance improvement.

Work Environment

• Onsite manufacturing/machine shop environment.
• Collaborative team environment with limited supervision.
• Requires adherence to company safety policies and procedures.
• Employees are expected to maintain a clean and organized work area.

Physical Requirements

• Ability to perform machining setup, operation, inspection, and related production activities.
• Ability to work safely around machining equipment and production machinery.
• Ability to use precision measuring and inspection equipment.

Benefits

Employee benefits may be available in accordance with applicable federal, state, and local laws and company policy.

EEOC Compliance

We are an Equal Employment Opportunity employer and consider qualified candidates without regard to race, color, religion, sex, national origin, age, disability, veteran status, or any other protected status under applicable law.

Disclaimer

This job description is intended to describe the general nature and level of work being performed. It is not intended to be an exhaustive list of all responsibilities, duties, qualifications, or working conditions associated with the position. Responsibilities and requirements may be subject to change based on business needs.