CNC Machinist Level III

Seiler Instrument Inc.; St. Louis (MO); On-site; USD 47,000 - 55,000; Full time

Benefits offered by this job

Medical, Vision, and Dental health

Parental and Bonding Leave

PTO

401(k) Matching

Tuition Reimbursement

9 annual paid holidays

Company events

Employee Assistance Program (EAP)

Job summary

Seiler Instrument Inc. in Saint Louis, MO is seeking a CNC Machinist Level III to produce close-tolerance components and perform full machine setups. You will troubleshoot processes, interpret drawings, and drive quality with minimal supervision.

The role demands 5+ years of CNC experience, a strong blueprint/GD&T skillset, and the ability to work independently on advanced setups. Competitive benefits, sign-on bonus, and a robust shop environment are offered.

Qualifications

• 5+ years CNC machining experience required; advanced candidates 7-10+ years.
• Demonstrated ability to hold tight tolerances and stable processes.
• Strong blueprint interpretation and GD&T proficiency.

Responsibilities

• Run CNC equipment producing close-tolerance parts; maintain repeatable results.
• Interpret drawings and tolerances to ensure correct processing.
• Perform in-process inspection and adjust as needed for compliance.
• Troubleshoot machining issues and coordinate corrective actions with leads.

Skills

Strong blueprint interpretation

GD&T comprehension

Inspection discipline

Independent work

Process troubleshooting

Education

High school diploma or GED

Tools

Fanuc controls

Mitsubishi controls

Okuma controls

Job description

# CNC Machinist Level IIIHot JobSt. Louis - St. Louis, MO 63122## OverviewSalary Range$34.00 - $40.00LevelExperiencedPosition TypeFull TimeJob ShiftAnyEducation LevelHigh School/GEDTravel PercentageNoneCategoryManufacturing## Description*Step into a Machinist Level III role where precision and performance set the standard. In this position, you’ll produce complex, tight-tolerance components, perform full machine setups, and keep production running smoothly with minimal supervision. This is built for experienced machinists who can confidently troubleshoot process challenges, maintain consistent quality, and take on higher-complexity work. If you take pride in craftsmanship, thrive in a technically advanced environment, and are ready to elevate your impact on the shop floor, this is your next move.***Seiler is offering a $5,000 sign on bonus for CNC Machinist hires!****Pay Range: $34.00-$40.00****Perks and Benefits:*** Medical, Vision, and Dental health plans* Parental and Bonding Leave* PTO* 401(k) Matching* Tuition ReimbursementHere at Seiler, we are committed to not only manufacturing and selling the highest quality systems and utilizing modern techniques, but we are also committed to our employees’ well-being and happiness. In addition to the perks above we also offer:* 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 and ***More!*****Responsibilities include:*** Run CNC equipment producing close-tolerance parts; maintain repeatable results across production runs.* Interpret drawings, tolerances, and job documentation to ensure correct processing.* Perform in-process inspection, analyze measurement results, and make appropriate adjustments (e.g., offsets or wear compensation per process) 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 as required (e.g., workholding support, tooling swaps, verifying documentation, inspection support).* Complete required documentation, inspection records, and traceability requirements for each job.* Operate shop equipment safely and efficiently.## Qualifications**Requirements:*** High school diploma or GED.* 5+ years CNC machining experience required; advanced candidates commonly have 7-10+ years.* Technical degree may be a substitute for some experience.* Demonstrated ability to hold tight tolerances and maintain stable processes.* Strong blueprint interpretation skills; GD&T comprehension as applicable to work.* 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 supporting complex work on multi-axis platforms and/or precision-turning environments.* Familiarity with common 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.