Machinist
Amazon · Wilmington, MA · 2 wk ago
On-siteProductContract
Key Responsibilities
- CNC Programming & Operation
- Create toolpaths using CAM software from 3D CAD models and engineering drawings
- Select appropriate cutting tools, speeds, feeds, and machining strategies
- Perform first-article runs, verify dimensions against drawings, and iterate programs
- Operate and maintain waterjet for sheet metal and plate fabrication
- Operate manual mills and manual lathes for quick-turn parts and secondary operations
- Manage tooling inventory, tool offsets, work holding fixtures, and machine maintenance schedules
- Additive Manufacturing
- Operate and maintain industrial 3D printers including FDM, SLS, and DLP/resin systems
- Operate CO2 laser cutter for sheet stock and prototyping applications
- Prepare build files, orient parts for optimal print quality, and select appropriate materials and parameters
- Perform post-processing of printed parts: support removal, curing, finishing, and heat treatment
- Advise engineers on best fabrication method (subtractive vs. additive vs. sheet forming)
- Specialty Materials & Processes
- Operate dedicated equipment for machining reactive metals following strict safety protocols
- Maintain awareness of material-specific hazards, dust collection requirements, and proper chip handling procedures
- Support future advanced manufacturing capabilities (directed energy deposition, metal powder bed fusion) as equipment comes online
- Quality & Inspection
- Inspect machined parts using precision measurement tools: micrometers, calipers, height gauges, bore gauges, surface plates
- Perform first-article inspections and document results against engineering drawings with GD&T callouts per ASME Y14.5
- Collaborate with metrology lab for critical dimension verification using CMM, 3D scanning, and laser tracker equipment
- Identify and resolve machining issues (chatter, deflection, surface finish, thermal drift) through process adjustment
- Shop Management & Collaboration
- Maintain CNC machines including routine preventive maintenance, coolant management, and basic troubleshooting
- Keep the machine shop organized, clean, and safe following 5S and EHS guidelines
- Collaborate with design engineers to provide DFM feedback and suggest design modifications
- Prioritize and schedule machining jobs across multiple concurrent prototype programs
- Support continuous improvement of shop processes, fixturing, and standard work
Basic Qualifications
- High school diploma or equivalent
- 5+ years of experience as a CNC machinist, including both CAM programming and hands-on operation
- Proficiency with CAM software (Mastercam, Fusion 360, Siemens NX, or equivalent)
- Strong knowledge of G-code and M-code; ability to hand-edit programs at the controller
- Experience with CNC milling and CNC lathe operation
- Experience machining a variety of materials including aluminum, steel, stainless steel, and engineering plastics
- Proficiency with precision measurement tools and first-article inspection
- Ability to work in an engineering and production environment with quality standards
- Ability to lift up to 50 lbs and stand for extended periods
Preferred Qualifications
- Associate degree or journeyman certification in machining, manufacturing technology, or tool & die making
- 7+ years of experience in prototype or job-shop environments with high-mix, low-volume work
- Demonstrated experience with 5-axis CNC milling and multi-axis programming
- Experience with DMG Mori or similar premium CNC equipment and Siemens or Heidenhain controllers
- Experience machining titanium and magnesium alloys with proper safety protocols
- Experience operating waterjet equipment
- Experience operating and maintaining industrial 3D printers (FDM, SLS, SLM/metal powder bed)
- Familiarity with CAD software (SolidWorks, Creo, Siemens NX) for model review and fixture design
- Experience in robotics, aerospace, medical device, or defense prototyping environments
- NIMS (National Institute for Metalworking Skills) certification
- Demonstrated ability to work independently, manage priorities across multiple projects, and communicate effectively with engineering teams