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Assistant Plant Engineer Jobs in Missouri (NOW HIRING)

C.L. Smith Company

Process Technician

Saint Louis, MO · On-site

Required to perform production duties as needed. o Machine troubleshooting o Job change-overs Collaborate with Plant Engineer on machine enclosure project. Assist Plant Engineer in daily variable ...

C.L. Smith

Process Technician

Saint Louis, MO · On-site

Required to perform production duties as needed. o Machine troubleshooting o Job change-overs Collaborate with Plant Engineer on machine enclosure project. Assist Plant Engineer in daily variable ...

C.L. Smith Company

Process Technician

Saint Louis, MO · On-site

Required to perform production duties as needed. o Machine troubleshooting o Job change-overs Collaborate with Plant Engineer on machine enclosure project. Assist Plant Engineer in daily variable ...

Johnson Controls

Plant Lean Leader

Albany, MO · On-site

$100K - $150K/yr

Identifies and brings forward to Champion new project opportunities * Assist Plant Manager in any strategic initiative that will help in compliance to standards, implementing new systems, and ...

Johnson Controls

Plant Lean Leader

Albany, MO · On-site

$100K - $150K/yr

Identifies and brings forward to Champion new project opportunities * Assist Plant Manager in any strategic initiative that will help in compliance to standards, implementing new systems, and ...

Johnson Controls

Plant Lean Leader

Albany, MO · On-site

$100K - $150K/yr

Identifies and brings forward to Champion new project opportunities * Assist Plant Manager in any strategic initiative that will help in compliance to standards, implementing new systems, and ...

Central Plains Cement

Engineer - Automation

Sugar Creek, MO · On-site

$70K - $75K/yr

Responsible for learning the Programmable Logic Controller software and hardware. * Responsible for ... Promote new upgrades and features to assist plant performance. * Work closely with the Electrical ...

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Assistant Plant Engineer information

What does an assistant plant engineer do?

An Assistant Plant Engineer supports the efficient operation and maintenance of manufacturing or processing plants. They assist in planning, coordinating, and supervising engineering projects, equipment maintenance, and facility improvements. Their responsibilities also often include troubleshooting machinery, ensuring compliance with safety and environmental regulations, and supporting senior plant engineers with technical tasks. This role typically requires a background in engineering and strong problem-solving skills.

What are the key skills and qualifications needed to thrive as an assistant plant engineer, and why are they important?

To thrive as an Assistant Plant Engineer, you need a solid background in mechanical or electrical engineering, typically supported by a relevant bachelor's degree and foundational knowledge of plant operations. Familiarity with Computerized Maintenance Management Systems (CMMS), AutoCAD, and industry-standard safety protocols is commonly required. Strong analytical skills, attention to detail, and effective communication are crucial soft skills for diagnosing issues and collaborating with cross-functional teams. These competencies ensure efficient plant maintenance, minimize downtime, and support overall operational excellence.

How does an assistant plant engineer typically collaborate with other departments within a manufacturing facility?

As an Assistant Plant Engineer, you will regularly work alongside teams such as maintenance, production, and safety to ensure efficient plant operations. Collaboration often involves coordinating equipment repairs, implementing process improvements, and supporting safety initiatives. Effective communication and teamwork are essential, as you may need to gather input from operators, report progress to plant managers, and assist with cross-functional projects to optimize plant performance.

What is the difference between Assistant Plant Engineer vs Maintenance Engineer?

AspectAssistant Plant EngineerMaintenance Engineer
CredentialsDiploma or Bachelor's in Mechanical, Electrical, or Industrial EngineeringDiploma or Bachelor's in Mechanical, Electrical, or related engineering
Work EnvironmentIndustrial plants, manufacturing facilities, production sitesIndustrial plants, manufacturing facilities, equipment maintenance areas
Industry UsageUsed in manufacturing, power plants, and large industrial facilitiesCommon in manufacturing, facilities management, and industrial sectors

The Assistant Plant Engineer and Maintenance Engineer roles often overlap in industrial settings, focusing on plant operations and equipment upkeep. The Assistant Plant Engineer typically supports plant management with engineering tasks, while the Maintenance Engineer concentrates on maintaining and repairing machinery. Both roles require technical certifications and work in similar environments, but their primary responsibilities differ slightly, with the Assistant Plant Engineer more involved in operational support and the Maintenance Engineer focusing on maintenance activities.

Do you need a degree to be an assistant plant engineer?

An assistant plant engineer typically does not require a college degree but benefits from technical training or certifications in engineering, maintenance, or related fields. Relevant experience, technical skills, and knowledge of plant operations are often more important than formal education for this role.

How much do assistant plant engineers make in the US?

Assistant plant engineers in the US typically earn between $50,000 and $70,000 annually, depending on experience, location, and industry. They often work in manufacturing or industrial settings, requiring technical skills and knowledge of plant operations.

What are the most commonly searched types of Plant Engineer jobs in Missouri?

The most popular types of Plant Engineer jobs in Missouri are:

What cities in Missouri are hiring for Assistant Plant Engineer jobs?

Cities in Missouri with the most Assistant Plant Engineer job openings:

Assistant Plant Engineer jobs near you
Infographic showing various Assistant Plant Engineer job openings in Missouri as of August 2026, with employment types broken down into 1% As Needed, 79% Full Time, 17% Part Time, 1% Temporary, and 2% Contract. Highlights an 98% Physical, 1% Hybrid, and 1% Remote job distribution.

Assistant Plant Engineer

Metropolitan St. Louis Sewer District

Saint Louis, MO

Full-time

Posted 13 days ago

Job description

Job Description: 
Under direction, perform responsible engineering work in the operation and maintenance of a major wastewater treatment plant or pump stations.


Essential Functions: 
 
Provide technical assistance in the installation, operation, maintenance, modification, modernization and protection of physical facilities and equipment in a wastewater treatment plant or pump stations 
 
Assist Division Manager in prioritizing major system modifications within overall District Capital Improvement plan 
 
Coordinate multi disciplinary engineering activities such as contractual engineering services, facility design, equipment selection, procurement and construction 
 
Prepare specification and plans for contracts, purchases of equipment and services 
 
Oversee and supervise contractors 
 
Use and maintain data in the computerized maintenance management system for equipment and buildings at a wastewater treatment plant or pump station facilities 
 
Maintain records and prepare reports; perform reliability engineering and root cause failure analysis as directed 
 
Perform process optimization and efficiency analysis for utilities, chemical usages, etc; assist in the preparation of the annual O&M budget.
 

Additional Responsibilities: May serve as Manager in his/her absence; performs related work as required or as delegated by supervisor
 
 
 
 

MINIMUM QUALIFICATIONS:

Training and Experience: 

Bachelor's degree from an accredited college or university with major course work in civil, mechanical, chemical or electrical engineering

Two (2) years of progressively responsible engineering experience in plant and/or pump station operations.


Desirable Knowledge Skills and Abilities: 

Considerable knowledge of the principles and practices of engineering 

Considerable skill in the use of basic engineering tools including personal computers and making engineering computations 

Considerable skill in reading and interpreting engineering plans and specifications 

Considerable skill in analyzing and integrating data 

Considerable skill in forming and maintaining effective working relationships with consultants and contractors 

Considerable skill in maintaining records and preparing reports.


SPECIAL REQUIREMENT:
 

Licensed Engineer-In-Training in the State of Missouri.
Must possess valid driver's license issued by the state in which the employee resides.
Pursuant to MSD's "Substance Abuse Policy and Procedures," this position has been designated as safety sensitive and candidate must pass a Non-D.O.T. Drug Test for this position. Employees occupying this position are not subject to Federal (D.O.T.) Drug and Alcohol Testing Regulations.

The Metropolitan St. Louis Sewer District provides comprehensive wastewater and storm water management services to residents and businesses in both St. Louis City and County. As one of the most recognized employers in the region and a fixture in the downtown area, MSD employs over 900 individuals in a wide-range of roles including skilled crafts and laborers, engineering, information technology, finance, human resources and administration support.  We invite you to be part of the team!
Training and Experience: Bachelor degree from an accredited college or university with major course work in civil, mechanical, chemical or electrical engineering and two years of progressively responsible engineering experience in plant and/or pump station operations.
Desirable Knowledge Skills and Abilities: Considerable knowledge of the principles and practices of engineering; considerable skill in the use of basic engineering tools including personal computers and making engineering computations; considerable skill in reading and interpreting engineering plans and specifications; considerable skill in analyzing and integrating data; considerable skill in forming and maintaining effective working relationships with consultants and contractors; considerable skill in maintaining records and preparing reports.

SPECIAL REQUIREMENT:
Licensed Engineer-In-Training in the State of Missouri.
Must possess valid driver's license issued by the state in which the employee resides.
Pursuant to MSD's "Substance Abuse Policy and Procedures," this position has been designated as safety sensitive and candidate must pass a Non-D.O.T. Drug Test for this position. Employees occupying this position are not subject to Federal (D.O.T.) Drug and Alcohol Testing Regulations.
Employees of MSD must have a meets expectations.

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