CNC Machinist

Aerotek; St. Louis (MO); On-site; USD 45,000 - 65,000; Full time

Benefits offered by this job

Per Diem $166/day

50+ hour workweeks

Overtime on Saturdays

Contract with potential extension

Job summary

Aerotek is seeking experienced CNC Machinists with gear-cutting expertise for a long-term contract in St. Louis, MO. The role involves independent CNC setups, reading blueprints, and maintaining tight tolerances in a high-volume environment.

Overtime is common, with Saturdays and occasional Sundays as needed. Per diem applies for eligible travelers, and extended contract possibilities exist. The position is fully onsite in St.

Qualifications

• 2–5+ years of CNC machining experience as a baseline.
• Previous gear-cutting experience is required.
• Experience performing independent CNC setups.
• Proficiency with Siemens and/or Fanuc controls.
• Experience with setups, tool changes, offsets, and basic troubleshooting.

Responsibilities

• Set up and operate CNC grinding, hobbing, and gear-manufacturing equipment.
• Perform independent CNC machine setups and tool changes.
• Make offsets and size adjustments to maintain tight tolerances.
• Read and interpret blueprints, work instructions, and specifications.
• Perform in-process inspections using precision measuring tools.
• Evaluate inspection results and adjust machines as needed.
• Monitor machine performance and part quality during runs.
• Troubleshoot basic machine issues as they arise.
• Operate overhead cranes safely and maintain a clean area.

Skills

Independent CNC setups

Gear-cutting experience

Blueprint reading

Read/determine tolerances

Crane operation

Tools

Siemens controls

Fanuc controls

CNC grinders

JUNKER grinders

Overhead crane operation

Job description

Job Title: CNC Machinist

CNC Gear Machinist

We are seeking experienced CNC Machinists with gear-cutting experience for a long-term contract opportunity. Candidates must be comfortable performing independent CNC setups, working with tight tolerances, and supporting a high-volume manufacturing environment.

Contract Details

• Contract Length: 6 months

• Contract may extend an additional 13 months depending on production needs and outside factors

• Expected Hours: 50-60+ hours per week

• Overtime will primarily be worked on Saturdays , with optional Sundays as needed

• Per Diem: $166/day (7 days) for eligible travelers

Job Responsibilities

• Set up and operate CNC grinding, hobbing, and gear-manufacturing equipment

• Perform independent CNC machine setups and tool changes

• Make offsets and size adjustments to maintain tight machining tolerances

• Read and interpret blueprints, work instructions, and manufacturing specifications

• Perform in-process inspections using precision measuring instruments and hand gauges

• Evaluate inspection results and make necessary machine adjustments

• Monitor machine performance and part quality throughout production runs

• Perform basic machine troubleshooting as needed

• Operate overhead cranes safely

• Maintain a clean and organized work area

• Support overtime and production requirements as needed

Qualifications

• 2-5+ years of CNC machining experience

• Previous gear-cutting experience is required

• Experience performing independent CNC setups

• Proficiency with Siemens and/or Fanuc controls

• Experience with setups, tool changes, offsets, and basic machine troubleshooting

• Ability to use hand gauges and precision measuring equipment

• Ability to read blueprints and work to tight tolerances

• Experience operating overhead cranes

• Strong attendance and reliability

• Ability to follow instructions and work independently

Additional Skills & Qualifications

• Experience with machines such as CNC Grinders, JUNKER Grinders, Warner Grinder, Lathes, Okuma Drills, Gleason Shapers, Liebherr Hobs.

• Ability to work with quality tools and hand gages.

Why Consider This Opportunity?

• $166/day per diem for eligible travelers

• 50+ hour workweeks

• Significant overtime availability

• 6-month contract with potential extension

• Opportunity to work with specialized CNC gear-manufacturing equipment

Job Type & Location

This is a Contract position based out of St. Louis, MO.

Pay and Benefits

The pay range for this position is $40.00 - $40.00/hr.

Individual compensation offered for this position within this range will depend on many factors, including qualifications, skills, relevant experience, job knowledge, geographic location, internal equity, and other pertinent job-related factors.

Eligibility requirements apply to some benefits and may depend on your jobclassification and length of employment. Benefits are subject to change and may besubject to specific elections, plan, or program terms. If eligible, the benefitsavailable for this temporary role may include the following:

Medical, dental & visionCritical Illness, Accident, and Hospital401(k) Retirement Plan Pre-tax and Roth post-tax contributions availableLife Insurance (Voluntary Life & AD&D for the employee and dependents)Short and long-term disabilityHealth Spending Account (HSA)Transportation benefitsEmployee Assistance ProgramTime Off/Leave (PTO, Vacation or Sick Leave)

Job Type & Location

This is a Contract position based out of St. Louis, MO.

Application Deadline

This position is anticipated to close on Nov 17, 2026.

Workplace Type

This is a fully onsite position in St. Louis,MO.

About Aerotek

Aerotek® Inc. provides staffing and services solutions in manufacturing, logistics, construction, aviation, facilities and maintenance. We provide the expertise, solutions and people required to rise to the challenges of North American industry. Headquartered in Hanover, Md., Aerotek operates a unified network of over 200 offices across North America, supporting more than 18,000 clients each year. Aerotek is an Allegis Group company, the global leader in workforce and business solutions. To learn more, visit: Aerotek.com | 1-888-AEROTEK.

Aerotek offers weekly pay, employee benefits including medical, dental & vision, life insurance, health advocacy and employee assistance programs, a 401(k) plan, and employee discounts.

The company is an equal opportunity employer and will consider all applications without regards to race, sex, age, color, religion, national origin, veteran status, disability, sexual orientation, gender identity, genetic information or any characteristic protected by law.

San Francisco Fair Chance Ordinance

Pursuant to the San Francisco Fair Chance Ordinance, for all positions located in the city and county of San Francisco, we will consider for employment qualified applicants with arrest and conviction records.

Massachusetts Lie Detector

It is unlawful in Massachusetts to require or administer a lie detector test as a condition of employment or continued employment. An employer who violates this law shall be subject to criminal penalties and civil liability.

Use of Artificial Intelligence (AI)

We may use Artificial Intelligence (AI) to support parts of our hiring process, including sourcing, screening, and evaluating candidates. AI helps assess applications and qualifications, but final decisions are made by our hiring team. By applying, you acknowledge and agree that your application may be reviewed using AI tools.