CNC Machinist 4-Axis Haas Mill (Mastercam)

Job Description

Job Description

Millennium Power Service is hiring an experienced CNC Machinist with strong 4-axis milling and Mastercam programming experience to support precision manufacturing operations at our Westfield, MA facility.

This position is ideal for a machinist who enjoys owning the entire process — from reviewing prints and programming to setup, prove-out, and producing high-quality finished parts. We’re looking for someone who can work independently, solve problems on the fly, and consistently deliver precision work in a fast-paced shop environment.

• Program, set up, and operate 4-axis Haas CNC milling machines
• Build and modify programs using Mastercam software
• Perform complete machine setups including tooling, fixturing, offsets, and first-piece inspections
• Interpret engineering drawings, blueprints, and GD&T requirements
• Machine precision components while maintaining close tolerances and quality standards
• Edit programs and adjust machining parameters to improve performance and efficiency
• Select appropriate tooling, inserts, holders, and workholding solutions for each project
• Inspect parts using precision measuring equipment including micrometers, calipers, indicators, and bore gauges
• Troubleshoot machining and programming issues to reduce downtime and improve production flow
• Maintain a clean, organized, and safety-focused work area

• 5+ years of CNC machining experience preferred
• Hands-on experience with 4-axis Haas milling machines
• Strong Mastercam programming skills required
• Ability to independently complete setups and prove-outs
• Comfortable machining to tight tolerances
• Ability to read and interpret blueprints and GD&T
• Strong understanding of feeds, speeds, tooling, and machining strategies
• Experience using precision measuring equipment
• Solid math and problem-solving abilities
• High school diploma or equivalent required
• Trade school or machining certification is a plus

• Experience machining stainless steel, alloy steel, or specialty materials
• Familiarity with Haas controls and post-processors
• Continuous improvement mindset with the ability to optimize cycle times and reduce scrap

• Monday – Friday | 7:00 AM – 3:30 PM
• Overtime and weekend hours available based on production needs

• Competitive pay based on experience and skill level
• Premium overtime and weekend pay opportunities
• Medical, dental, and vision coverage
• Short-term and long-term disability plans
• Life insurance and 401(k)
• Paid holidays and PTO
• Stable work environment with long-term career potential
• Clean, organized, and safety-driven shop

At Millennium Power Services, we value craftsmanship, accountability, and teamwork. If you’re a skilled machinist looking for a company where your experience and problem-solving abilities make an impact, we encourage you to apply.