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Associate Process Engineer Jobs in St Louis, MO (NOW HIRING)

Process engineer

Saint Louis, MO ยท On-site

$88K - $103K/yr

Bachelor's or associate's degree in mechanical/plastics engineering or related field. * Reheat blow process and automation experience * Experience with the following manufacturers of machinery: Aoki ...

Bachelor's or associate's degree in mechanical/plastics engineering or related field. * Reheat blow process and automation experience * Experience with the following manufacturers of machinery: Aoki ...

Process Engineer

Saint Louis, MO ยท On-site

$90K - $130K/hr

Bachelor's or associate's degree in mechanical/plastics engineering or related field. * Reheat blow process and automation experience * Experience with the following manufacturers of machinery: Aoki ...

Bachelor's or associate's degree in mechanical/plastics engineering or related field. * Reheat blow process and automation experience * Experience with the following manufacturers of machinery: Aoki ...

Works closely with Controls engineers for design of new or improved control process. Interacts with ... Ability to deal directly with associates at all levels within the organization to build consensus ...

Works closely with Controls engineers for design of new or improved control process. Interacts with ... Ability to deal directly with associates at all levels within the organization to build consensus ...

Process Mechanical Stress Engineer

Saint Louis, MO ยท On-site

$71K - $94K/yr

Reporting to the Associate Principal Process Mechanical, this role provides advanced engineering expertise, mentors junior engineers, and ensures mechanical systems are designed in accordance with ...

Reporting to the Associate Principal Process Mechanical, this role provides advanced engineering expertise, mentors junior engineers, and ensures mechanical systems are designed in accordance with ...

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Associate Process Engineer information

See St Louis, MO salary details

$40.3K

$80.3K

$128.3K

How much do associate process engineer jobs pay per year?

As of Aug 16, 2026, the average yearly pay for associate process engineer in St. Louis, MO is $80,341.00, according to ZipRecruiter salary data. Most workers in this role earn between $63,700.00 and $92,400.00 per year, depending on experience, location, and employer.

Do associate process engineers make a lot of money?

Associate process engineers typically earn a median salary that is competitive within engineering fields, with entry-level salaries often starting around $60,000 to $70,000 annually. Salaries can increase with experience, certifications, and industry specialization, and some roles may include bonuses or benefits. Overall, the position offers a solid income relative to other entry-level engineering roles.

What are the key skills and qualifications needed to thrive as an associate process engineer?

To thrive as an Associate Process Engineer, you need a solid background in chemical or mechanical engineering, problem-solving abilities, and a relevant bachelor's degree. Familiarity with process simulation software (like Aspen Plus or HYSYS), data analysis tools, and knowledge of industry standards is typically required. Strong analytical thinking, attention to detail, and effective communication skills help you collaborate with cross-functional teams and troubleshoot process issues. These skills ensure efficient process optimization, safety, and continuous improvement in manufacturing or production environments.

What does an associate process engineer do?

An associate process engineer supports the development, implementation, and optimization of manufacturing processes to improve efficiency and quality. They analyze data, troubleshoot issues, and collaborate with teams to ensure processes meet safety and performance standards, often using tools like process flow diagrams and statistical analysis software.

How does an associate process engineer typically collaborate with other departments during a project?

As an Associate Process Engineer, you'll work closely with cross-functional teams such as production, quality assurance, maintenance, and safety. Your role often involves gathering input from operators, coordinating with quality teams to resolve issues, and collaborating with senior engineers on process improvements. Regular communication and teamwork are essential, as you'll be expected to provide technical support, participate in meetings, and help implement solutions that align with overall operational goals. This collaborative environment not only enhances your technical skills but also helps you build strong professional relationships across the organization.

What is the difference between Associate Process Engineer vs Process Engineer?

AspectAssociate Process EngineerProcess Engineer
Required CredentialsBachelor's degree in engineering or related field; some certifications preferredBachelor's degree in engineering; often more experience or certifications required
Work EnvironmentEntry-level, supporting process development and optimization in manufacturing or chemical plantsMore independent roles, overseeing process improvements and troubleshooting
Employer & Industry UsageCommon in manufacturing, chemical, and pharmaceutical industriesUsed across similar industries, often with more responsibility

The main difference between an Associate Process Engineer and a Process Engineer lies in experience and responsibility. The Associate role is typically entry-level, focusing on supporting process tasks, while the Process Engineer has more independence and oversees process improvements. Both roles require similar educational backgrounds, but the Process Engineer usually has more experience or certifications. Understanding these distinctions can help job seekers identify the right position for their career stage and goals.

What are the most commonly searched types of Process Engineer jobs in St. Louis, MO?

The most popular types of Process Engineer jobs in St. Louis, MO are:

What job categories do people searching Associate Process Engineer jobs in St. Louis, MO look for?

The top searched job categories for Associate Process Engineer jobs in St. Louis, MO are:

What cities near St. Louis, MO are hiring for Associate Process Engineer jobs?

Cities near St. Louis, MO with the most Associate Process Engineer job openings:

Infographic showing various Associate Process Engineer job openings in St. Louis, MO as of August 2026, with employment types broken down into 1% As Needed, 79% Full Time, 16% Part Time, 3% Contract, and 1% Nights. Highlights an 92% Physical, 2% Hybrid, and 6% Remote job distribution, with an average salary of $80,341 per year, or $38.6 per hour.

Process engineer

Pretium Packaging - USA

Saint Louis, MO โ€ข On-site

$88K - $103K/yr

Other

Re-posted 25 days ago


Job description

Pretium Packaging is searching for a talented, hands-on Process Engineer for our plant in **St. Louis, Missouri. **

About Us:

Pretium Packaging, founded in 1992, is a leading supplier of injection-blow molded plastic containers, known for delivering superior quality, value, and customer service. With 20 manufacturing locations across North America, we provide innovative, high-performance packaging solutions to a diverse portfolio of brand owners in the U.S. and Canada.

What You’ll Be Responsible For:

The Process Engineer assists plant leadership and works collaboratively with all other departments to maintain the flow of work in the process molding lines, ensuring customer products are being produced in accordance with required specifications and quality standards. The Process Engineer will analyze process defects and find solutions. arriving at acceptable quality level throughout the process,

What you’ll do:

  • Start up new and existing equipment, check out system for proper operation, calibrate equipment, perform loop checks, troubleshoot, and resolve system problems.

  • Respond to emergency work order requests, troubleshoot, and analyze systems, investigate the nature of the problems, check for software and hardware defects and verify equipment for proper operation.

  • Direct the installation of new systems to ensure specification and safety compliance by personnel and vendors.

  • Define internal quality control plan including gauging methods and frequency of inspection.

  • Assist production with new project set-ups, tool changes and program adjustments.

  • Troubleshoot problems related to the production process, recommend alternatives to meet planned production schedules and ensure product quality standards are maintained.

  • Modify existing systems, redesign software and system circuitry as necessary to meet project objectives.

  • Recommend improvements to encourage safe and reliable equipment operation on newly installed equipment.

  • Review and analyze daily check sheets for accuracy and to determine operating problems and required corrective action.

  • Monitor and ensure changeovers are completed as scheduled and in a proper manner.

  • Check and ensure preventive maintenance procedures are performed as scheduled and are accurately documented.

  • Maintain good housekeeping conditions and safe operating practices in the department.

  • Ensure weekly setup sheets are completed for all lines and preview for deviations from standards and follow up as necessary.

  • Investigate and resolve product quality problems as required.

  • Troubleshoot and diagnose equipment breakdowns and replace and rebuild machine components as needed.

  • Set up molding machines and trimmer, align and install molds, set and adjust time cycles, air pressures and water temperatures, position labeler, change over and adjust reamer, trim stations, material inspection system, and adjust sequence timing for all operations.

  • Coordinate the implementation of production schedules in the most efficient and productive manner.

  • Recommend and implement improvements to machine line operations to increase productivity and improve product quality.

  • Perform processing for new molds/tooling establishing run perimeters for best efficiency.

What you’ll bring:

  • Bachelor’s or associate’s degree in mechanical/plastics engineering or related field.
  • Reheat blow process and automation experience
  • Experience with the following manufacturers of machinery: Aoki (ISBM/IBM/IM), Uniloy (IBM), and Zhongya (IM)
  • Root cause analysis and trouble-shooting experience
  • Experience with setting oven profiles
  • Infeed and outfeed conveyor experience
  • Effective leadership skills, strong decision-making skills, and ability to lead and drive project teams.
  • Well organized, accurate and attention to detail with the ability to lead and drive project teams.
  • Training or experience in Lean Manufacturing practices.
  • Able to travel and train as need throughout the region.

Why Join Pretium?

At Pretium Packaging, we manufacture rigid plastic containers for some of the most recognized brands in the marketplace. Our plants operate with a strong emphasis on safety, performance, and continuous improvement.

You should be proficient in:

  • Continuous Improvement
  • Process Engineering
  • Plastics - PA6 Experience
  • Plastics - PA66 Materials Experience
  • Plastic Extrusion Experience