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Machinist

Flex · Buffalo Grove, IL · Full time

Posted Sep 23, 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 a time a part came out of spec. How did you find the cause?

What they are checking: Whether they troubleshoot machine, tool and setup methodically instead of just rerunning.

How do you keep your machine and work area safe and clean?

What they are checking: Whether they follow shop safety habits that protect themselves and keep the machine accurate.

Tell me about a tool, jig or fixture you built from scratch.

What they are checking: Whether they can handle the full range of specialized work this role covers.

What would you do

You are repairing a die or fixture and the drawing is unclear. What do you do?

What they are checking: Whether they ask the Special Tooling Manager or engineer rather than guessing on critical tooling.

A production line is down waiting on a tool you are repairing. How do you handle the pressure?

What they are checking: Whether they work quickly without cutting corners, since a bad repair causes more downtime.

About the work

Tell me about your experience running a CNC grinder.

What they are checking: Whether they have real hands-on grinding experience, since that is the core of this role.

How do you set up a grinding job to hold a tight tolerance?

What they are checking: Whether they understand fixturing, wheel dressing and measurement needed for precision work.

What measuring tools do you use to check your parts?

What they are checking: Whether they are comfortable with micrometers, gauges and indicators to verify work.

How do you read a blueprint with GD and T callouts?

What they are checking: Whether they can interpret drawings well enough to build and repair tools, jigs and fixtures.

How do you know when a tool or instrument needs calibration?

What they are checking: Whether they understand calibration as part of keeping measurements trustworthy.

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The full job description

As published by Flex.

Flex is the diversified manufacturing partner of choice that helps market-leading brands design, build and deliver innovative products that improve the world. A career at Flex offers the opportunity to make a difference and invest in your growth in a respectful, inclusive, and collaborative environment. If you are excited about a role but don't meet every bullet point, we encourage you to apply and join us to create the extraordinary. Job Summary 

 To support our extraordinary teams who build great products and contribute to our growth, we’re looking to add a Machinist located in Buffalo Grove IL. What a typical day looks like : • Operates various conventional machine shop equipment such as grinders, Okamoto water grinders to produce and detail a variety of small parts, ranging from simple to complex, which are within prescribed tolerances. • Performs machine set-ups, adjusting speeds, feeds, and depth of cut, to machined parts to specifications set forth in blueprints, drawings, engineering orders, etc. • Checks machined parts for conformance to prescribed tolerances. • May be required to operate numerical control machines. The experience we’re looking to add to our team: • Associate’s Degree in related field, military technical training or equivalent education and training. • 2+ years' experience in CNC is required • Grinding experience with small details • Manuel machine experience is preferrable • Machine shop experience is preferable • Accuracy and attention to details is critically important AW20 What you'll receive for the great work you provide: • Full range of medical, dental, and vision plans • Life Insurance • Short-term and Long-term Disability • Matching 401(k) Contributions • Vacation and Paid Sick Time • Tuition Reimbursement 
 Application Deadline: Applications for this job position will be accepted for at least five days following the job posting start date below and continuing until the end date below or until the position is filled. This posting may close sooner due to application volume. Job Posting Start Date 09-23-2026 Job Posting End Date 10-26-2026

 The base pay range for this position is provided below. The final base rate offered will be determined using job-related, non-discriminatory criteria, including but not limited to experience, qualifications, geographic location, education, external market data, and internal equity. $31.04 USD - $42.68 USD Hourly Job Category Operations Is Sponsorship Available? No Flex is an Equal Opportunity Employer and employment selection decisions are based on merit, qualifications, and abilities. We do not discriminate based on: age, race, religion, color, sex, national origin, marital status, sexual orientation, gender identity, veteran status, disability, pregnancy status, or any other status protected by law. We're happy to provide reasonable accommodations to those with a disability for assistance in the application process. Please email accessibility@flex.com and we'll discuss your specific situation and next steps (NOTE: this email does not accept or consider resumes or applications. This is only for disability assistance. To be considered for a position at Flex, you must complete the application process first).

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