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Associate Engineer Jobs in O Fallon, MO (NOW HIRING)

Boeing

Associate Manufacturing Engineer

Hazelwood, MO · On-site

$85K - $115K/yr

Associate Manufacturing Engineer Company: The Boeing Company Boeing Defense, Space & Security (BDS) team is seeking Associate Manufacturing Engineers for the F-15 program located in Berkeley, MO.

Boeing

Associate Manufacturing Engineer

Berkeley, MO · On-site

$85K - $115K/yr

Associate Manufacturing Engineer Company: The Boeing Company Boeing Defense, Space & Security (BDS) team is seeking Associate Manufacturing Engineers for the F-15 program located in Berkeley, MO.

Boeing

Associate Manufacturing Engineer

Hazelwood, MO · On-site

$85K - $115K/yr

Associate Manufacturing Engineer Company: The Boeing Company Boeing Defense, Space & Security (BDS) team is seeking Associate Manufacturing Engineers for the F-15 program located in Berkeley, MO.

Boeing

Associate Manufacturing Engineer

Berkeley, MO

$85K - $115K/yr

Associate Manufacturing Engineer Company: The Boeing Company Boeing Defense, Space & Security (BDS) team is seeking Associate Manufacturing Engineers for the F-15 program located in Berkeley, MO.

Boeing

Associate Manufacturing Engineer

Berkeley, MO · On-site

$85K - $115K/yr

Associate Manufacturing Engineer Company: The Boeing Company Boeing Defense, Space & Security (BDS) team is seeking Associate Manufacturing Engineers for the F-15 program located in Berkeley, MO.

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Showing results 1-20

All JobsAssociate Engineer JobsAssociate Engineer Jobs in O'Fallon, MO

Associate Engineer information

See O Fallon, MO salary details

$38.8K

$77.3K

$123.5K

How much do associate engineer jobs pay per year?

As of Jul 27, 2026, the average yearly pay for associate engineer in O'Fallon, MO is $77,305.00, according to ZipRecruiter salary data. Most workers in this role earn between $61,300.00 and $88,900.00 per year, depending on experience, location, and employer.

What are Associate Engineers?

Associate Engineers are entry-level engineering professionals who support more experienced engineers in designing, developing, testing, and maintaining various projects in their field. They typically work under supervision and assist with tasks such as drafting technical documents, conducting research, analyzing data, and ensuring compliance with industry standards. Associate Engineers often gain practical experience and training to advance to higher-level engineering roles as they develop their skills.

What engineers make $300,000 a year?

Senior engineers in fields such as software, petroleum, and aerospace engineering can earn $300,000 or more annually, especially with extensive experience, specialized skills, and leadership roles. High compensation often involves working in high-demand industries, holding advanced certifications, or managing large projects and teams.

What can you do with an Associate in engineering?

An associate degree in engineering prepares individuals for technical roles such as engineering technician, CAD drafter, or quality control inspector. These positions often involve supporting engineering projects, using tools like AutoCAD or MATLAB, and may require certification or on-the-job training to develop specialized skills.

What Is an Associate Engineer?

An associate engineer is a lower level engineer in many fields of engineering, including environmental, civil, and mechanical. The title denotes rank and experience level. As an associate engineer, your typical job duties involve analyzing project plans, designing products, maintaining equipment, closely following specifications and procedures, and writing reports. The specific duties vary widely depending upon your field and employer. This career usually requires at least a bachelor’s degree in engineering and obtaining a license in your state. Additional qualifications include relevant work experience, strong technical skills, and a familiarity with your specific industry.

What is the work of an Associate engineer?

An Associate Engineer is an entry-level engineering professional responsible for assisting in the design, development, testing, and implementation of engineering projects. They often work under the supervision of senior engineers, utilize tools like CAD software, and may need relevant certifications or technical skills to perform tasks effectively.

What engineer makes $500,000 a year?

While most associate engineers do not earn this level of salary, senior engineers in specialized fields such as software, petroleum, or aerospace engineering can reach or exceed $500,000 annually, especially with bonuses, stock options, or in high-demand industries. Achieving this income typically requires extensive experience, advanced skills, and often leadership roles or entrepreneurial ventures.

What is the difference between Associate Engineer vs Mechanical Engineer?

AspectAssociate EngineerMechanical Engineer
Required CredentialsBachelor's degree in engineering or related field; entry-level certificationsBachelor's degree in mechanical engineering; professional licensure (optional)
Work EnvironmentDesign, testing, and support roles in engineering teams; often in office or lab settingsDesign, analysis, and manufacturing in industrial or construction settings
Employer & Industry UsageEntry-level position across various industries like manufacturing, construction, and techDesign and development roles primarily in manufacturing, automotive, aerospace, and energy sectors

The main difference between an Associate Engineer and a Mechanical Engineer lies in experience and responsibilities. Associate Engineers are typically entry-level, focusing on supporting engineering tasks, while Mechanical Engineers have more experience and handle complex design and analysis responsibilities. Both roles require a bachelor's degree, but Mechanical Engineers often pursue licensure for advanced roles. The choice depends on your experience level and career goals within engineering fields.

What are some typical challenges Associate Engineers face when transitioning from academic projects to industry roles?

Associate Engineers often find the transition from academic projects to industry roles challenging due to differences in project scope, teamwork dynamics, and pace. In industry, you’ll likely work on larger, multi-disciplinary teams where effective communication and collaboration are crucial. Additionally, projects often have stricter deadlines and require adherence to established processes and standards, which may be less emphasized in academic settings. Embracing continuous learning and seeking mentorship from senior engineers can help ease this transition and set you up for success.

What are the key skills and qualifications needed to thrive as an Associate Engineer, and why are they important?

To thrive as an Associate Engineer, you need a solid grasp of engineering principles, problem-solving abilities, and a relevant bachelor's degree. Familiarity with CAD software, industry-specific tools, and basic project management systems is typically required. Strong teamwork, attention to detail, and effective communication set standout candidates apart. These skills and qualities are crucial for delivering accurate technical solutions and contributing effectively to engineering projects.
More about Associate Engineer jobs
What are the most commonly searched types of Engineer jobs in O'Fallon, MO? The most popular types of Engineer jobs in O'Fallon, MO are:
What are popular job titles related to Associate Engineer jobs in O'Fallon, MO? For Associate Engineer jobs in O'Fallon, MO, the most frequently searched job titles are:
What job categories do people searching Associate Engineer jobs in O'Fallon, MO look for? The top searched job categories for Associate Engineer jobs in O'Fallon, MO are:
What cities near O'Fallon, MO are hiring for Associate Engineer jobs? Cities near O'Fallon, MO with the most Associate Engineer job openings:
Associate Engineer jobs near you
Infographic showing various Associate Engineer job openings in O'Fallon, MO as of July 2026, with employment types broken down into 1% As Needed, 69% Full Time, 28% Part Time, 1% Temporary, and 1% Contract. Highlights an 97% Physical, 1% Hybrid, and 2% Remote job distribution, with an average salary of $77,305 per year, or $37.2 per hour.
Associate Engineer

Associate Engineer

Metropolitan St. Louis Sewer District

Saint Louis, MO • On-site

$65K - $100K/yr

Full-time

Posted 17 days ago

Job description


CONSTRUCTION:
Essential Functions:
  • Perform beginning level civil engineering work as part of a construction/contract management team responsible for the administration of the construction of collection system and/or facility improvement projects.
  • Verify that the construction conforms to the contract documents.
  • Evaluate/review change orders requests, contractor submittals and contractor claims and prepare technical reports concerning complex construction and engineering problems and solutions.
  • Perform construction observation.
  • Make necessary field inspections to determine existing conditions.
  • May meet with government officials, consultants, and the general public to help communicate District policies and responsibilities.

Additional Responsibilities:
  • Maintain records and prepare reports; perform related work as required or as delegated by supervisors.

DESIGN:
Essential Functions:
  • Perform beginning level civil engineering as part of a design team responsible for the production of plans and specifications for the construction of District projects OR as part of a consultant contract management team responsible for coordinating the plans and specifications for the construction of District projects.
  • Compile data.
  • Check layout of manholes, inlet structures and pipelines, and calculate hydraulic properties of pipelines and drainage channels.
  • Correlate information obtained from topographic and other maps and plans.
  • Extend estimates.
  • Process project information in preparation for construction bidding.
  • Perform related civil engineering work.
  • May investigate storm water, sanitary, and combined sewer complaints and recommend solutions to problems.
  • May make necessary field inspections to determine existing conditions.
  • May meet with government officials, consultants, and the general public to help define District policies and responsibilities.

Additional Responsibilities:
  • Maintain records and prepare reports; perform related work as required or as delegated by supervisors.

ENVIRONMENTAL COMPLIANCE:
Essential Functions:
  • Perform beginning level civil engineering as part of an environmental compliance team.
  • Assist in review Engineering submittals for plan review for pretreatment pollutant control technologies and designs to ensure customers' compliance with federal, state and local regulations.
  • Review significant industrial users reports and prepare permits.
  • Assist with inspections of sanitary and storm pollution control equipment.
  • Review, evaluate and summarize of federal, state and local environmental regulations which may impact the District or its customers.
  • Advise District operating units and customers on environmental requirements and coordinate with them to ensure District compliance with requirements.
  • Review or prepare required regulatory reports, applications and plans.
  • Enforce compliance with District Ordinances.
  • Keep detailed records and prepare administrative and technical reports.
  • Perform industrial and other facility wastewater billing investigations.
  • Secure, update and process information from industries relating to the volume and strength of wastewater discharges and determination of appropriate billing factors.
  • Document and maintain discharge data.
  • Assist in the daily operation of the District's hauled waste program.
  • Process and approve/deny special discharge applications.

Additional Responsibilities: Maintain records and prepare reports; perform related work as required or as delegated by supervisors.
PLANNING:
Essential Functions:
  • Perform beginning level civil engineering with a development review team.
  • Review plans for sewerage and drainage facilities to ensure compliance with regulations and engineering design requirements.
  • Provide technical assistance to consulting engineers, developers and customers on sanitary and storm water drainage facilities.
  • Compile data.
  • Calculate drainage areas.
  • Check layout of manholes, inlet structures and pipelines, and calculate hydraulic properties of pipelines and drainage canals.
  • Correlate information obtained from topographic and other maps and plans; perform related civil engineering work. OR Perform beginning level civil engineering with a program planning team planning for the system needs and capital improvements in the following areas: collection systems (sanitary and combined), wastewater treatment, storm water, pump stations, and green infrastructure.
  • Perform hydraulic modeling.
  • Coordinate with various groups within the District including, Operations, Design, Construction, and Development Review.
  • Monitor project schedules.
  • May investigate storm water, sanitary, and combined sewer complaints and recommend solutions to problems.
  • May make necessary field inspections to determine existing conditions.
  • May meet with government officials, consultants, and the general public to help define District policies and responsibilities.

Additional Responsibilities:
  • Maintain records and prepare reports; perform related work as required or as delegated by supervisors.

OPERATIONS - COLLECTION SYSTEMS:
Essential Functions:
  • Investigate customer complaints with regard to sewer backups, sewer separation
  • requests, storm water problems, erosions, flooding, and other related issues;
  • Provide information to the public or governmental officials regarding the collection systems;
  • Manage the Sewer Separation Program and initiate work orders for installation of devices to alleviate sewer backups in buildings;
  • Provide CCTV review and coding for quality assurance of in-house CCTV inspections;
  • Investigates sewer problems dealing with such issues as backups and overflows, and make recommendations for maintenance and rehabilitation corrections;
  • Provide technical engineering support to Operations staff members;
  • Attend watershed meetings and coordinate communications between other divisions within MSD.

Additional Responsibilities:
  • Maintain records and prepare reports
  • Perform related work as required or as delegated by supervisors

OPERATIONS - ASSET MANAGEMENT:
Essential Functions:
  • Assist with providing support to treatment plant, pump station, sewer collection system, and/or vehicle maintenance departments to maintain work processes.
  • Asset upgrades, maintenance, and modification related to the life cycle Asset Management Program.
  • Monitor, use & maintain data in the computerized maintenance management system (CMMS) and dashboards to accurately report on program performance against objectives, troubleshoot and correct errors.
  • Assist with updating & maintaining life cycle asset maintenance standards as assigned to minimize failures and achieve reliability and service level goals.
  • Assist with implementing the District's capital improvement program to define assets, develop and collect asset information ahead of project completion.
  • Assist in any data conversion, cleanup, migration, testing, and monitoring efforts of the computerized (IBM Maximo) asset management system.
  • Assist with training District personnel.
Additional Responsibilities:
  • Maintain records and prepare reports; perform related work as required or as delegated by supervisors.

Qualifications
ENGINEERING (CONSTRUCTION/DESIGN/ENVIRONMENTAL COMPLAINCE/PLANNING):
Training and Experience:
  • Bachelor's degree in engineering or in the final year of coursework towards a Bachelor's degree from an accredited college or university. [Note: In either case, MSD requires proof of graduation on or before the first day employment.]

Desirable Knowledge and Skills:
  • Knowledge of principles and practices of civil engineering; comprehensive
  • knowledge of District regulations and procedures applicable to sewer construction;
  • problem solving and communication skills necessary to work effectively with contractors, engineers, and MSD staff to ensure the successful completion of these projects;
  • considerable knowledge of spreadsheet, word processing and design software; extensive skill in reading and interpreting complex engineering plans and specifications;
  • exceptional skill in maintaining records and preparing technical reports;
  • thorough skill in analyzing and integrating data;
  • considerable skill in communicating effectively both in oral and written form;
  • exceptional ability in forming and maintaining effective working relationships.

OPERATIONS:
Training and Experience:
  • Bachelor's degree in Civil, Chemical, Mechanical, Electrical, or Environmental engineering or in the final year of coursework towards a Bachelor's degree from an accredited college or university. [Note: In either case, MSD requires proof of graduation on or before the first day employment.]

Desirable Knowledge and Skills:
  • Good knowledge of the principles and practices of civil engineering,
  • skill in the use of basic engineering tools;
  • working skill in making engineering computations;
  • working skill in reading and interpreting engineering plans and specifications;
  • working skill in analyzing and integrating data;
  • working skill in maintaining records and preparing reports;
  • skill in following oral and written instructions;
  • deal effectively and courteously with associates and a wide variety of external contacts including the general public, outside
  • agencies, consultants, and vendors;
  • skill in communicating effectively both verbally and in writing;
  • skill in performing effectively as a member of the team in carrying out the District's mission and philosophy;
  • skill in performing essential functions of the job without posing a direct threat to the health and safety of others.

SPECIAL REQUIREMENT
Must possess a 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.
All current employees must have a 'Meets Expectations' or 'Proficient' rating on their most recent performance evaluation to be eligible.
Physical Demands
  • Stationary Position: Occasionally
  • Move/Traverse: Occasionally
  • Stationary Position/Seated: Constantly
  • Transport/Lifting: Rarely
  • Transport/Carrying: Rarely
  • Exerting Force/Pushing: Rarely
  • Exerting Force/Pulling: Rarely
  • Ascend/Descend: Rarely
  • Balancing: Rarely
  • Position Self/Stooping: Rarely
  • Position Self/Kneeling: Rarely
  • Position Self/Crouching: Rarely
  • Position Self/Crawling: Rarely
  • Reaching: Rarely
  • Handling: Occasionally
  • Grasping: Occasionally
  • Feeling: Rarely
  • Communicate/Talking: Constantly
  • Communicate/Hearing: Constantly
  • Repetitive Motions: Frequently
  • Coordination: Frequently
Work Environment
  • Extreme cold: Rarely
  • Extreme heat: Rarely
  • Humidity: Rarely
  • Wet: Rarely
  • Noise: Occasionally
  • Hazards: Rarely
  • Temperature Change: Rarely
  • Atmospheric Conditions: Rarely
  • Vibration: Rarely

About Us
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!

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