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Semco Plastics Jobs (NOW HIRING)

Semco

Process Technician

Saint Louis, MO

$23 - $35/hr

... Semco Tank Holding team in St Louis, MO! A Process Technician oversees production to ensure consistent quality products and maintains blow molding machinery to produce plastic products. Key ...

Semco

Process Technician

Saint Louis, MO · On-site

$23 - $35/hr

... Semco Tank Holding team in St Louis, MO! A Process Technician oversees production to ensure consistent quality products and maintains blow molding machinery to produce plastic products. Key ...

Semco

Set-up Technician

Saint Louis, MO · On-site

$21 - $24/hr

Company Overview Semco has become the market leader and manufacturer of rotationally molded poly ... plastics molding technology or equivalent (preferred). * Industry experience (required): 5 Years ...

Semco

Preventative Maintenance Technician

Saint Louis, MO · On-site

$26 - $32/hr

Position Summary We are looking for a Maintenance Reliability Technician to join our team at Semco ... Experience with plastics processing equipment (blow molding or injection molding) preferred.

Semco

Maintenance Technician

Saint Louis, MO · On-site

$26 - $35/hr

... Semco Tank Holding team on second or third shift! Primary responsibility is to maintain, repair ... plastics, molding technology, or equivalent, from an approved technical school, college or ...

Semco

Maintenance Technician

Saint Louis, MO

$26 - $35/hr

... Semco Tank Holding team on second or third shift! Primary responsibility is to maintain, repair ... plastics, molding technology, or equivalent, from an approved technical school, college or ...

Semco

Set-up Technician

Saint Louis, MO · On-site

$21 - $24/hr

High school diploma; technical associates degree in the field of general mechanics, electrical technology, plastics molding technology or equivalent (preferred). * Industry experience (required): 5 ...

All JobsSemco Plastics Jobs

Semco Plastics information

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$10

$22

$37

How much do semco plastics jobs pay per hour?

As of Jun 22, 2026, the average hourly pay for semco plastics in the United States is $22.09, according to ZipRecruiter salary data. Most workers in this role earn between $17.55 and $23.80 per hour, depending on experience, location, and employer.

What is Semco Plastics and what do they do?

Semco Plastics is a company that specializes in custom plastic injection molding and manufacturing. They work with a variety of industries to produce plastic components, parts, and assemblies according to specific client requirements. Services provided by Semco Plastics often include product design assistance, prototyping, tooling, and large-scale production runs. Their capabilities allow them to create intricate and precise plastic products for both commercial and industrial applications.

What are some common challenges faced by production team members at Semco Plastics, and how can they be addressed?

Production team members at Semco Plastics often encounter challenges such as meeting tight deadlines, ensuring product quality, and adapting to new manufacturing technologies. To address these, effective communication with supervisors, ongoing training, and teamwork are essential. The company typically provides support through structured onboarding, regular safety and skills training, and opportunities to collaborate closely with quality control and maintenance teams. Staying proactive and receptive to feedback can help employees thrive in this fast-paced environment.

What is the difference between Semco Plastics vs Semco Manufacturing?

AspectSemco PlasticsSemco Manufacturing
Primary FocusPlastic manufacturing and processingGeneral manufacturing across various products
Work EnvironmentPlastic production facilities, machinery operationMultiple manufacturing settings, assembly lines
Required CertificationsMachine operation, safety training, possibly forklift certificationVaries by product, often similar safety certifications

Semco Plastics specializes in plastic manufacturing, focusing on processing and production of plastic products. Semco Manufacturing covers a broader range of manufacturing processes across different industries. While both roles may require safety training and machinery operation certifications, Semco Plastics roles are more specific to plastics, whereas Semco Manufacturing roles are more diverse in product types and environments.

What are the key skills and qualifications needed to thrive as a Plastics Machine Operator at Semco Plastics, and why are they important?

To thrive as a Plastics Machine Operator at Semco Plastics, you need mechanical aptitude, attention to detail, and a high school diploma or equivalent. Familiarity with injection molding machines, quality inspection tools, and safety protocols is typically required. Dependability, problem-solving skills, and effective teamwork are vital soft skills that set top performers apart. These competencies ensure safe, efficient production and high-quality output in a manufacturing environment.
What job categories do people searching Semco Plastics jobs look for? The top searched job categories for Semco Plastics jobs are:
Semco Plastics jobs near you
Infographic showing various Semco Plastics job openings in the United States as of June 2026, with employment types broken down into 17% Locum Tenens, 8% As Needed, 8% Full Time, 59% Part Time, and 8% Nights. Highlights an 23% Physical, 24% Hybrid, and 53% Remote job distribution, with an average salary of $45,940 per year, or $22.1 per hour.

Process Technician

Semco

Saint Louis, MO

$23 - $35/hr

Full-time

Posted 12 days ago

Job description

Company Overview

Tank Holding Corporation has become the market leader and manufacturer of rotationally molded poly and welded steel bulk storage and material handling products in North America. Tank is growing rapidly and is always working to expand its capabilities and diversify product offerings consistent with the company values of growth and service to its customers.

Job Summary

Were looking for a Blow and Injection Molding Process Technician to join the Semco Tank Holding team in St Louis, MO! A Process Technician oversees production to ensure consistent quality products and maintains blow molding machinery to produce plastic products. Key responsibilities include adjusting process parameters (temperature, pressure), troubleshooting equipment, and ensuring product quality.

What We Offer:

  • Medical, dental, & vision insurance with competitive premiums
  • 401(k) with 3% matching
  • Up to $5,250 of educational assistance per calendar year
  • PTO + 9 paid company holidays

Key Responsibilities

  • Setup and Operation: Trouble shoot and calibrate molds, adjust machine settings (temperature, pressure, cycle time), and operate machinery to meet production goals.
  • Maintenance & Repair: Troubleshoot and make minor repairs to machinery to minimize downtime.
  • Quality Control: Monitor production, inspect, and weigh finished products to ensure they meet specifications.
  • Changeovers: Efficiently change equipment settings for different product lines.
  • Safety & Environment: Maintain a safe, clean work area, and train operators on safe, proper machine handling.

Required Skills and Qualifications

  • Experience: Previous experience in plastics blow molding of 3-5 years, particularly with machines like Milacron, Graham.
  • Technical Knowledge: Strong mechanical aptitude, understanding of hydraulic, pneumatic, and electrical systems.
  • Physical Stamina: Ability to lift heavy molds and work in a manufacturing environment.
  • Problem-Solving: Strong troubleshooting skills to identify root causes of, for example, flashing or improper molding.

Physical Requirements:

The physical demands described here are representative of those that must be met by an employee to successfully perform the essential functions of this job. Reasonable accommodations may be made to enable individuals with disabilities to perform the essential functions.


Occasional, represents 1 to 33% or 1-2 hours of an 8-hour work day.

Frequently, represents 34 to 66% or 2 1/2 to 5 1/2 hours of an 8-hour work day.

Regularly, represents 67 to 100% or 6 to 8 hours of an 8-hour work day.


While performing the duties of this Job, the employee is regularly required to stand; walk; use hands to finger, handle, or feel; reach with hands and arms and talk or hear.

The employee is occasionally required to climb or balance and stoop, kneel, crouch, or crawl. The employee must regularly lift and /or move up to 50 pounds. Specific vision abilities required by this job include close vision, color vision and peripheral vision.


Work Environment:

The work environment characteristics described here are representative of those an employee encounters while performing the essential functions of this job. Reasonable accommodations may be made to enable individuals with disabilities to perform the essential functions.

While performing the duties of this Job, the employee is occasionally exposed to wet and/or humid conditions and moving mechanical parts.


AAP/EEO Statement:

Tank Holding provides equal employment opportunities (EEO) to all employees and applicants for employment without regard to race, creed, ancestry, sexual or affectional orientation, marital or veteran status, color, religion, sex, national origin, age, disability, genetics, status with regard to public assistance or any characteristic protected under federal, state or local law.


Other Duties:

Please note this job description is not designed to cover or contain a comprehensive listing of activities, duties or responsibilities that are required of the employee for this job. Duties, responsibilities and activities may change at any time with or without notice.