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Prototype Machinist A

Milwaukee Tool · Brookfield, WI · Full time

Posted Sep 3, 2026 · We last checked this listing on Oct 6, 2026

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Likely interview questions for this role

Written from this job description, not a generic list. Each one notes what the interviewer is really checking.

About your past

Tell me about the hardest prototype part you have made. What made it hard?

What they are checking: Whether they have solved real fixturing, tolerance or material problems rather than only running routine jobs.

Tell me about a time you suggested a design change that made a part easier to machine.

What they are checking: Whether they work with engineers as a partner and bring machining knowledge into the design conversation.

How do you keep up with new machining methods and tools?

What they are checking: Whether they keep learning, since the posting expects the latest software and machining methods.

What would you do

An engineer gives you a rough sketch and a few spoken instructions. How do you make sure you build what they want?

What they are checking: Whether they ask the right questions and confirm intent before cutting, since prototype work often starts without full drawings.

Three engineers all say their parts are urgent. How do you decide what to run first?

What they are checking: Whether they sort out priorities openly and tell people realistic timelines instead of quietly picking favorites.

About the work

Walk me through how you take a CAD model and turn it into a finished prototype part.

What they are checking: Whether they own the whole process from programming and setup to cutting and checking the part.

What CAM software and CNC machines have you run yourself?

What they are checking: Whether they have hands-on experience with the modern software and machines this prototype shop relies on.

How do you set up a tight-tolerance part on a multi-axis machine?

What they are checking: Whether they have the advanced setup skill and care that tight prototype tolerances demand.

How do you check a part before you hand it to an engineer?

What they are checking: Whether they measure and verify their own work so engineers can trust test results built on their parts.

What materials have you machined, and what gave you the most trouble?

What they are checking: Whether they have range across metals and plastics and know how to handle each material's quirks.

Practice this interview out loud.

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The full job description

As published by Milwaukee Tool.

Job Description: Come be DISRUPTIVE with us! At Milwaukee Tool, our most valued resource is our dedicated team of employees - employees who work with a passion to be the best and an unparalleled pride in their work and in the Milwaukee brand. We know that the only way to sustain growth and success is to value the growth and success of each person within the organization that's why we invest in an individual's growth and development from day one. All our teams touch every step of the process, that is why our Engineering teams are some of the key contributors to our continuous innovations. The fast-paced, agile environment continuously delivers disruptive technologies by providing every team with the resources needed to excel and working directly with End Users to understand how to deliver heavy duty products with high performance. We create Best in Class products by leveraging advanced analysis tools, extensive testing regimes, state-of-the-art manufacturing processes and cross-functional agility. To learn more about the Milwaukee story and our company click HERE . You'll also be DISRUPTIVE through these duties and responsibilities: • The primary role of this position is to create prototype components using the latest software and machining methodology, in support of new product development. • Work directly from CAD Models, sketches and verbal instructions to produce accurate prototype power tool components in a variety of materials. • Program and post to a variety of CNC equipment using CAD/CAM software for a variety of complex models, dies, plastic injection molds, hydraulic components and gears. • Recommend design changes or modifications, select allowances and materials, proceed from own concept in the absence of design and specifications as needed. • Use a variety of precision measuring devices to layout and inspect work. • This position requires a highly skilled / motivated individual who will be required to frequently communication with our New Product Development Team and maintain schedules in conjunction with safety and quality. What TOOLS you'll bring with you: • Requires a high school education or equivalent supplemented by an apprenticeship program and 10+ years of applied experience in related fields. Apprenticeship requirement can be offset by work experience. • A thorough understanding of commonly used machining principles, i.e. Datum planes, tab machining, dimensional accuracy and materials. • Extensive programming and operational knowledge in one or more of the following machines. • Hermle Five Axis Mill, Haas / Fadal / Mazak Vertical Machining Center, Mazak Multi-Tasking Integrex/ Nexus CNC Turning, Mitsubishi EDM, Sodick Sinker / EDM Wire, Koepfer Gear Hob, Knee Mills and ID / OD Grinders • Proficiency in Cad / Cam software is essential to perform assigned responsibilities. CAD proficiency in one or more of the following; Solid Works, NX Unigraphics, CAM programming proficiency in Power Mill Virtual Gibbs, NX Unigraphics, Master Cam or SurfCam software required. We provide these great perks and benefits: • Robust health, dental and vision insurance plans. • Generous 401 (K) savings plan. • Education assistance. • On -site wellness, fitness center, food and coffee service. • And many more, check out our benefits site HERE . Milwaukee Tool is an equal opportunity employer.

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