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Location: Brookfield, Wisconsin
Employment Type: Contract-to-Hire or Direct Hire
Company: STS Technical Services
Shifts Available: 1st Shift (6:00 AM – 4:30 PM) and 2nd Shift (4:30 PM – 3:00 AM), Monday through Friday, 10-hour shifts

Position Summary

STS Technical Services is hiring CNC Machinists (Levels I–IV) in Brookfield, Wisconsin. This role involves the setup, operation, and programming of CNC machines to produce complex components for various industries. Opportunities are available on both 1st and 2nd shifts, and compensation will reflect experience and skill level.

Whether you’re just starting out or have advanced machining and programming expertise, we’re looking for driven individuals ready to contribute in a fast-paced, team-oriented manufacturing environment.

Essential Duties & Responsibilities

Level I – Entry Level CNC Operator:

• Operate CNC machine tools
• Inspect parts for conformance to specifications
• Follow written and verbal job instructions
• Perform repetitive machining tasks
• Operate multiple machines in a production cell
• Understand basic blueprints and perform basic math
• Maintain reliable attendance

Level II – CNC Operator:

• Operate CNC machines and make offset adjustments based on setup instructions
• Assist with machine setups under supervision
• Read and interpret basic blueprints and inspection protocols
• Understand GD&T concepts
• Train or mentor Level I team members

Level III – Intermediate CNC Machinist:

• Independently set up fully documented repeat jobs
• Run first pieces to print specifications
• Perform manual inspections and interpret blueprints at a higher level
• Edit or create CNC programs
• Apply advanced math (trigonometry/geometry)
• Mentor other operators

Level IV – Senior CNC Machinist:

• Set up complex jobs from scratch and document the process for future runs
• Perform advanced machining and diagnostics
• Program or edit machine code
• Interpret blueprints and GD&T at a high level
• Lead and mentor CNC Operators and Machinists
• Operate multiple machines within a production cell

Required Qualifications

Level I:

• High school diploma required; CNC Technical Diploma preferred
• Up to 1 year of machining experience
• Basic computer skills

Level II:

• High school diploma required; CNC Technical Diploma preferred
• 2+ years of machining experience
• Familiarity with CNC tools, software, and machine offsets

Level III & IV:

• High school diploma required; CNC Technical Diploma preferred
• 5+ years of machining experience, including programming and advanced setups
• Ability to independently set up, program, and troubleshoot machines

Skills & Competencies

• Mechanical aptitude and strong math skills
• Willingness to learn and grow within the role
• Strong understanding of blueprints and GD&T (higher levels)
• Familiarity with ERP systems and shop floor software (preferred)

Physical & Environmental Demands

• Must be able to stand continuously for up to 10 hours
• Frequent bending, twisting, reaching, and lifting (up to 50 lbs occasionally, 30 lbs frequently)
• Exposure to loud environments, fumes, and mechanical parts
• Vision requirements include close, distance, color, peripheral, and depth perception
• Climate-controlled factory environment with occasional exposure to humidity and airborne particles

About STS Technical Services

STS Technical Services is a Top 100 Staffing Firm that partners with some of the largest names in the aerospace, manufacturing, defense, and industrial sectors. We provide direct hire, contract, and contract-to-hire staffing solutions that connect skilled professionals with career-advancing opportunities.

#IndeedSTS

Are you ready to make a real impact? Looking for a stable, growing company where you can build your career and thrive? Your opportunity starts here.

At Trace-A-Matic, our people are our greatest asset. We foster a clean, safe, and supportive work environment where individuals are empowered to grow personally and professionally. Our mission is to deliver excellence in complex precision-machined components while exceeding customer expectations.

We believe in sharing success. Through our Gainsharing program, we split profits 50/50 with employees—paid out quarterly. And if you’re relocating, we’ve got you covered with relocation assistance to help make your transition smooth.

Trace-A-Matic Offers:

• 10 Paid Holidays
• Serviced Base PTO
• Gainsharing
• Medical, Dental, Vision Insurance and more!
• On-site Fitness Center & Medical Clinic
• Weekly Pay
• Company Provided Uniforms and Safety Shoe Allowance
• Performance Merit Raises
• Climate Controlled Environment
• Free Employee Coffee

CNC Machinist Job Overview:

Job responsibilities include: performing set up, operation, and programming of complex machined components for many different industries.

Essential Job Duties:

• Set up all repeat jobs that are fully documented, ensuring consistency and adherence to established procedures.
• Run first-piece parts to meet print specifications and validate setup accuracy.
• Program CNC machines and perform edits to optimize performance and part quality.
• Conduct manual inspections of parts using inspection sheets and established criteria.
• Read and interpret blueprints at a medium to high level, applying inspection protocols and completing required documentation.
• Apply knowledge of Geometric Dimensioning and Tolerancing (GD&T) to ensure precision and compliance with tolerances.
• Operate multiple machines simultaneously within a production cell to maximize efficiency.
• Utilize advanced shop math, including trigonometry and geometry, to support machining operations and problem-solving.
• Mentor and train operators to promote skill development and consistency in repetitive tasks.
• Perform additional duties as assigned to support production and team objectives.

Requirements

Qualifications:

• A Highschool diploma/CNC technical diploma preferred
• 5+ years machining experience
• Mechanical interest/aptitude
• Good math skills
• A willingness to learn and grow

Trace-A-Matic provides equal employment opportunities to all employees and applicants for employment and prohibits discrimination and harassment of any type without regard to race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state or local laws.