CNC Machinist Level III 2nd Shift
Seiler Instrument & Mfg. Co. Inc., Kirkwood, MO, United States
Overview
Machinist Level III role focused on producing complex, tight-tolerance components, performing full machine setups, and maintaining production with minimal supervision. This position requires experience in troubleshooting process challenges, sustaining consistent quality, and handling higher-complexity work. The candidate should take pride in craftsmanship, thrive in a technically advanced environment, and be ready to elevate impact on the shop floor.
Seiler is offering a $5,000 sign-on bonus for CNC Machinist hires.
Shift and Location
Shift Time: 3:20 PM – 1:50 AM
Work Days: Monday–Thursday (Friday, Saturday, and Sunday OFF)
Location: St. Louis, Missouri, On-site
Benefits
Medical, Vision, and Dental health plans
Parental and bonding leave
PTO
401(k) matching
Tuition reimbursement
9 annual paid holidays
1–2 free company events every summer
Employee Assistance Program (EAP)
Flexibility in start/stop time for most positions
Profit-based bonus
Responsibilities
Operate CNC equipment to produce close-tolerance parts and maintain repeatable results across production runs.
Interpret drawings, tolerances, and job documentation to ensure correct processing.
Perform in-process inspection, analyze measurement results, and adjust (offsets or wear compensation) to maintain compliance.
Troubleshoot machining issues (tooling, offsets, process stability, surface finish, dimensional drift) and coordinate corrective action with leads, engineering, and quality.
Perform setups, changeovers, and first-piece approvals (e.g., workholding support, tooling swaps, verifying documentation, inspection support).
Complete required documentation, inspection records, and traceability for each job.
Operate shop equipment safely and efficiently.
Requirements
High school diploma or GED
5+ years CNC machining experience required; 7–10+ years for advanced candidates
Technical degree may substitute for some experience
Demonstrated ability to hold tight tolerances and maintain stable processes
Strong blueprint interpretation and GD&T comprehension as applicable
Strong inspection discipline and ability to work independently at an advanced level
Ability to lift and carry up to 75 pounds (some positions)
Preferred Qualifications
Experience with complex work on multi-axis platforms and/or precision turning
Familiarity with CNC controls (e.g., FANUC, Mitsubishi, Okuma)
Experience supporting first-piece verification and quality documentation rigor
Experience identifying and communicating process improvements to reduce variation and scrap
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Machinist Level III role focused on producing complex, tight-tolerance components, performing full machine setups, and maintaining production with minimal supervision. This position requires experience in troubleshooting process challenges, sustaining consistent quality, and handling higher-complexity work. The candidate should take pride in craftsmanship, thrive in a technically advanced environment, and be ready to elevate impact on the shop floor.
Seiler is offering a $5,000 sign-on bonus for CNC Machinist hires.
Shift and Location
Shift Time: 3:20 PM – 1:50 AM
Work Days: Monday–Thursday (Friday, Saturday, and Sunday OFF)
Location: St. Louis, Missouri, On-site
Benefits
Medical, Vision, and Dental health plans
Parental and bonding leave
PTO
401(k) matching
Tuition reimbursement
9 annual paid holidays
1–2 free company events every summer
Employee Assistance Program (EAP)
Flexibility in start/stop time for most positions
Profit-based bonus
Responsibilities
Operate CNC equipment to produce close-tolerance parts and maintain repeatable results across production runs.
Interpret drawings, tolerances, and job documentation to ensure correct processing.
Perform in-process inspection, analyze measurement results, and adjust (offsets or wear compensation) to maintain compliance.
Troubleshoot machining issues (tooling, offsets, process stability, surface finish, dimensional drift) and coordinate corrective action with leads, engineering, and quality.
Perform setups, changeovers, and first-piece approvals (e.g., workholding support, tooling swaps, verifying documentation, inspection support).
Complete required documentation, inspection records, and traceability for each job.
Operate shop equipment safely and efficiently.
Requirements
High school diploma or GED
5+ years CNC machining experience required; 7–10+ years for advanced candidates
Technical degree may substitute for some experience
Demonstrated ability to hold tight tolerances and maintain stable processes
Strong blueprint interpretation and GD&T comprehension as applicable
Strong inspection discipline and ability to work independently at an advanced level
Ability to lift and carry up to 75 pounds (some positions)
Preferred Qualifications
Experience with complex work on multi-axis platforms and/or precision turning
Familiarity with CNC controls (e.g., FANUC, Mitsubishi, Okuma)
Experience supporting first-piece verification and quality documentation rigor
Experience identifying and communicating process improvements to reduce variation and scrap
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