Demo

Machine Operator

Serioplast
St Louis, MO Full Time
POSTED ON 4/3/2026
AVAILABLE BEFORE 9/28/2026
Serioplast, a Global Leader in Rigid Plastic Packaging, is looking for a Machine Operator for the plants in St. Louis, MO!

Are you a mechanical operator looking for an exciting opportunity to thrive in a fast-paced, global environment? Join us and take your career to new heights!

What will you do?

  • Operate and monitor the machine and its parts to ensure efficiency and quality, and support experts during troubleshooting when needed
  • Manage color changes, adjust and set blow pins, clean the mixer, perform basic daily repairs, and carry out weekly and monthly maintenance on the machine and its ancillaries
  • Know the process parameters of the machine, can set them, and can set up and change recipes
  • Ensure proper handling of both raw material and post-production materials
  • Act as Shift Supervisor deputy if needed
  • Fill out production documents, quality control sheets, and record data
  • Perform product checks using measuring tools, follows the control plan, and records the results on the correct forms
  • Support technical staff in solving minor issues that affect product quality and production, focusing on how specific parameters impact the final result

What are we looking for?

  • Good knowledge of plastic molding technologies (EBM and/or SBM and/or IM)
  • Good applied knowledge of measuring instruments and techniques
  • Ability to operate manual and electric forklifts
  • Basic applied knowledge of mechanics, pneumatics, hydraulics, electrical and/or electronic systems
  • Basic applied knowledge of WCM standards
  • Basic knowledge of Health, Safety and Environment rules and practices
  • Diploma in electrical or mechanical studies

What do we offer?

  • Continuous training: Grow professionally by working alongside industry experts
  • Dynamic and international environment: Join a team engaged in global projects
  • Career growth opportunities in an industry-leading company
  • Flexible working hours and smart working (defined days per month)
  • Internal mobility: Opportunities for job rotation and career progression

Additional Perks & Benefits:

  • 401(k)
  • 401(k) matching
  • Dental insurance
  • Health insurance
  • Health savings account
  • Paid time off
  • Vision insurance

Sounds like a fit? We’d love to hear from you!

Want to know more about us? Check out Who We Are and discover what makes us unique!

Upon sending their application, the candidate grants specific consent to the processing of personal data, in accordance with current legislation on privacy. The privacy policy is available at the following link: https://www.serioplast.com/contents/10_Privacy_E-Recruitment_en.pdf

Serioplast is an equal employment opportunity employer, and all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, age, protected veteran status, status as a qualified individual with a disability, or any other characteristic protected by law.

Salary.com Estimation for Machine Operator in St Louis, MO
$39,975 to $49,230
If your compensation planning software is too rigid to deploy winning incentive strategies, it’s time to find an adaptable solution. Compensation Planning
Enhance your organization's compensation strategy with salary data sets that HR and team managers can use to pay your staff right. Surveys & Data Sets
Employees: Get a Salary Increase
View Core, Job Family, and Industry Job Skills and Competency Data for more than 15,000 Job Titles Skills Library

Job openings at Serioplast

  • Serioplast St Louis, MO
  • Serioplast , a Global Leader in Rigid Plastic Packaging , is Looking for a Senior Plastic Injection Molding Technologist for the plants in St. Louis, Misso... more
  • 10 Days Ago

  • Serioplast St Louis, MO
  • Serioplast , a Global Leader in Rigid Plastic Packaging, is Looking for a Quality Technician for the plants in St. Louis, Missouri! Are you a quality contr... more
  • 13 Days Ago

  • Serioplast St Louis, MO
  • Serioplast , a Global Leader in Rigid Plastic Packaging , is Looking for a Packing Operator for the plants in St. Louis, Missouri! Are you a motivated team... more
  • 14 Days Ago

  • Serioplast St Louis, MO
  • Serioplast , a Global Leader in Rigid Plastic Packaging, is looking for a Warehouse Operator for the plants in St. Louis, MO! Are you a logistics expert lo... more
  • 14 Days Ago


Not the job you're looking for? Here are some other Machine Operator jobs in the St Louis, MO area that may be a better fit.

  • Digital Operator Group Allentown, PA
  • Description SUMMARY Assists machine operator in tending fabricating machines such as cutoff saws, shears, rolls, brakes, presses, forming machines, folding... more
  • 24 Days Ago

  • Accent Machine Sand Springs, OK
  • We are looking for a skilled CNC Machine Operator to set up, maintain and operate machinery. You’ll ensure the efficient running of production. A great CNC... more
  • 4 Days Ago

AI Assistant is available now!

Feel free to start your new journey!