Cnc Machine Operator

Job Description

Job Description

Job Title: Tool Grinder / CNC Machine Operator Job Description

This role is responsible for setting up and operating tool grinding and CNC machines to produce tooling that meets manufacturer and customer specifications at a cost-effective level. You will interpret each customer’s job application, ensure tools are manufactured correctly, and perform work in alignment with established safety standards, quality procedures, and core workplace behaviors.

• Set up and operate tool grinding and CNC machines to produce tooling according to manufacturer and customer specifications.
• Review and understand each customer job application to ensure tools are made correctly for the intended use.
• Sort tooling and organize workpieces, fixtures, and related materials prior to production.
• Set up machines and prepare jobs to be run for each specific application, including selecting appropriate tooling and fixtures.
• Grind tooling according to detailed tool specifications, ensuring accuracy and consistency.
• Clean and inspect machinery, tools, and work areas to maintain a safe and efficient production environment.
• Inspect jobs after final operations to verify that dimensions, quality, and finish meet specified requirements.
• Respond to commonly occurring machine or production problems using established standards, procedures, or precedents.
• Perform all tasks in accordance with ISO requirements and internal quality standards.
• Promote and support a strong safety culture by following safety procedures and encouraging safe work practices.
• Exhibit and model core workplace behaviors and support a positive team culture.
• Use inspection tools and gauges to verify dimensions and tolerances on finished parts.
• Read and interpret blueprints and job documentation housed on digital devices to guide setup and production.
• Work collaboratively with team members to meet production goals and resolve issues as they arise.

• Hands-on experience with tool grinding and CNC machine operation in a machine shop environment.
• Ability to set up and operate grinding machines, including Tru-Tech grinders, cylindrical grinding machines, and manual grinding machines.
• Knowledge of material and tooling types and how they affect grinding and machining processes.
• Understanding of what each tool is, how it is used, and how application requirements influence tool geometry.
• Ability to identify bad grinds, chips, and other defects using eye loupes and magnifiers.
• Proficiency in reading and interpreting blueprints to determine dimensions, tolerances, and required features.
• Ability to use measuring tools such as micrometers, Vernier calipers, and radius gauges accurately.
• Knowledge of how to select the appropriate grinding wheel for each job based on material and application.
• Competence in applying math skills and tool geometry concepts to set up and verify machining operations.
• Experience with machining operations including lathe, mill, and general machine operation.
• Ability to perform part inspection and verify that finished components meet specifications.
• Capability to follow ISO procedures and quality standards in daily work.

• Experience working in a production-oriented machine shop environment.
• Familiarity with CNC machine setup and operation for grinding and machining applications.
• Comfort using digital tools, including tablets or similar devices, to access blueprints and job instructions.
• Strong attention to detail and a quality-focused mindset when inspecting tools and parts.
• Ability to troubleshoot common machine and process issues using established guidelines.
• Good communication skills to work effectively within a small team environment.
• Physical ability to regularly lift and move up to 50 pounds and perform tasks that require standing, walking, and reaching throughout the shift.

You will join a small, collaborative team where your work directly supports high-profile, precision-driven projects. Each team member receives a dedicated tablet to access blueprints and job information, enabling efficient and modern workflows. The workplace fosters a sense of community through monthly family-style lunches and a supportive culture that values safety, quality, and continuous improvement.

Work takes place in a climate-controlled machine shop with generally good working conditions. The environment may be slightly dirty at times or involve occasional exposure to shop elements typical of machining operations. Work is typically performed during regular daytime hours, Monday through Friday, with the possibility of occasional schedule adjustments that may include some weekends or evenings. The role involves frequent standing, walking, sitting, and using hands to handle or feel objects, tools, and controls, as well as reaching with hands and arms. You will regularly use computers, tablets, and other equipment to access blueprints and job information. The position requires the ability to lift and move up to 50 pounds and maintain close vision and clear focus for detailed inspection work. Dress is consistent with a machine shop environment, emphasizing safety and practicality while working around machinery and tools.

This is a Contract to Hire position based out of O Fallon, MO.

The pay range for this position is $18.00 - $22.00/hr.

Eligibility requirements apply to some benefits and may depend on your job classification and length of employment. Benefits are subject to change and may be subject to specific elections, plan, or program terms. If eligible, the benefits available for this temporary role may include the following: • Medical, dental & vision • Critical Illness, Accident, and Hospital • 401(k) Retirement Plan – Pre-tax and Roth post-tax contributions available • Life Insurance (Voluntary Life & AD&D for the employee and dependents) • Short and long-term disability • Health Spending Account (HSA) • Transportation benefits • Employee Assistance Program • Time Off/Leave (PTO, Vacation or Sick Leave)

This is a fully onsite position in O Fallon,MO.

This position is anticipated to close on Aug 6, 2026.

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.

We know that finding work is hard, and finding meaningful work is harder. Aerotek connects 180,000+ light industrial and skilled trades workers with 14,000+ employers each year, helping our workers navigate an evolving labor market and find jobs that meet their goals, skills, and interests. Since 1983, we have provided a variety of career opportunities across North American industry – from short-term assignments at Fortune 500 companies where you can build your skills, to long-term opportunities where you can play a vital role in solving companies’ construction, manufacturing, and maintenance challenges. Our 1,500+ experienced recruiters across 250+ offices work relentlessly to put our workforce in a position to thrive. Let us rise to meet your challenges and put our people-are-everything spirit to the test as your career continues to grow.

Company Description

We know that finding work is hard, and finding meaningful work is harder. Aerotek connects 180,000+ light industrial and skilled trades workers with 14,000+ employers each year, helping our workers navigate an evolving labor market and find jobs that meet their goals, skills, and interests. Since 1983, we have provided a variety of career opportunities across North American industry – from short-term assignments at Fortune 500 companies where you can build your skills, to long-term opportunities where you can play a vital role in solving companies’ construction, manufacturing, and maintenance challenges. Our 1,500+ experienced recruiters across 250+ offices work relentlessly to put our workforce in a position to thrive. Let us rise to meet your challenges and put our people-are-everything spirit to the test as your career continues to grow.