1

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

Associate Engineer

Alton, IL · On-site

$71K - $137K/yr

  • Medical

  • Retirement

  • PTO

The Engineer performs system planning and circuit analysis of distribution circuits 15kv and below and develops remediation plans as needed; performs project engineering and project management duties ...

Associate Engineer

West Alton, MO · On-site

$72K - $108K/yr

  • Medical

  • Retirement

  • PTO

About The Position The Engineer provides engineering support in all phases of maintenance, operations, design, and modifications for Ameren Energy Centers as needed. Key responsibilities include:

Associate Graduate Engineer

Saint Louis, MO · On-site

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

About this Role An Associate Graduate Engineer at HBK Engineering is a position designed for recent engineering graduates entering the professional workforce. This entry-level role involves designing ...

Associate Graduate Engineer

Saint Louis, MO · On-site +1

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

About this Role An Associate Graduate Engineer at HBK Engineering is a position designed for recent engineering graduates entering the professional workforce. This entry-level role involves designing ...

next page

Showing results 1-20

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 Aug 18, 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 is an associate engineer?

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 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.

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.

How much does an associate engineer get paid?

An associate engineer's average salary typically ranges from $60,000 to $80,000 annually, depending on industry, location, and experience. Entry-level positions may start lower, while those with specialized skills or certifications can earn higher wages. Salaries often increase with experience and additional responsibilities.

What can I do with an associate engineer's degree in engineering?

An associate engineer's degree prepares individuals for entry-level engineering roles such as technician, assistant engineer, or project support staff. These positions often involve tasks like drafting, testing, data analysis, and using tools like CAD software, with opportunities for on-the-job training and certification to advance in engineering fields.

What is the salary of an associate engineer?

The salary of an associate engineer typically ranges from $60,000 to $80,000 annually, depending on factors such as industry, location, and experience. Entry-level positions may start lower, while experienced associates or those with specialized skills can earn higher wages.

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:

Infographic showing various Associate Engineer job openings in O'Fallon, MO as of August 2026, with employment types broken down into 1% As Needed, 68% Full Time, 29% Part Time, 1% Temporary, and 1% Contract. Highlights an 96% Physical, 1% Hybrid, and 3% Remote job distribution, with an average salary of $77,305 per year, or $37.2 per hour.

$71K - $137K/yr

Full-time

Medical, Retirement, PTO

Posted 20 days ago


Job description

About Ameren Illinois

Ameren Illinois provides electric transmission and distribution service and natural gas distribution service. Every day, we deliver electricity to 1.2 million electric and 816,000 natural gas customers in central and southern Illinois. We deliver safe, reliable energy to more than 1,200 communities.

Our benefits include:

  • Medical coverage on date of hire

  • 100% employer paid cash balance pension plan

  • 401(k) with company match fully vested on date of hire

  • Minimum of 15 days paid vacation and 12 paid holidays

  • Paid parentalleave and family caregiver leave

Visit our Benefits and Perks Page for more information on benefits provided to regular full-time employees.

About The Position:

The Engineer performs system planning and circuit analysis of distribution circuits 15kv and below and develops remediation plans as needed; performs project engineering and project management duties in order to complete plans, designs, cost estimates, and construction of electric distribution facilities 69kv and below with emphasis on safety, reliability, cost effectiveness, and customer satisfaction.

Key responsibilities include:

  • Plan, design, cost estimate, budget and manage projects related to new business, reliability, government highway or local road projects, system growth, and essential maintenance for the electric system.
  • Facilitate the installation of Renewable Energy Resources projects from 25kw to 5MW on the distribution system. Perform engineering analysis to allow seamless integration into the electric system and achieve a sustainable energy future.
  • Provide engineering assistance and technical support to field engineering representatives and otherRegion personnel. Perform power quality/trouble shooting analysis for customers' facilities.
  • Meet with residential and commercial customers, architects, contractors, and other appropriate contacts to determine actions needed to fulfill customers' requests. Provide customers with information regarding rates, lighting, wiring, NEC, and NESC code interpretations, and other service requirements and needs.
  • Perform engineering and design of electric or modifications in response to customer service requests, including: determining the impact of additional loads on the existing electric distribution system; securing of permits and rights-of-way; and performing post-construction follow-up.
  • Prepare load analysis for electric distribution substations and feeders and develop remediation plans for facilities that warrant corrective action.
  • Perform work within various company computer systems, such as DOJM, MV90, EADMS, CSS, SYNERGI, Load Analysis, OAS and Byers.
  • Work withregion team members to enhance safety, reliability, cost effectiveness, and customer satisfaction.
  • Contribute to the development and implementation of department andregion goals. Identify and implement improvements in processes and operations to control costs and improve productivity.
  • Emergency call-out for storm restoration.

Qualifications:

Bachelor of Science Degree in Engineering (Electrical preferred or other engineering disciplines acceptable depending upon qualifications) from an accredited college or university required. Completion of power-related courses in college is preferred. E.I.T. (Engineer-in-Training) certification or P.E. (Professional Engineer) registration preferred. Electrical engineering and project management experience preferred but will consider recent graduates.

In addition to the above qualifications, the successful candidate will demonstrate:

Must be self-starter with attention to detail and possess problem-solving, decision-making, communication, and human relation skills. Must have good analytical skills, and advanced computer skills. Must be adaptable and flexible, ability to work effectively as part of a team and also independently.

Additional Information:

Ameren's selection process includes a series of interviews and may include a leadership assessment process. Specific details will be provided to qualified candidates.

Incumbents currently in the existing or similar career path will be considered only as lateral transfers.

Compensation Range:

$71,100.00 - $137,200.00

* This pay range encompasses multiple levels of the role. Career level and compensation depends upon applicant's credentials.

At Ameren, base salary is one component of a competitive compensation package for employees. Our pay ranges are broad to allow for movement within our organization and to accommodate different skill sets and levels of expertise. We take into consideration a variety of factors including, but not limited to, skills, abilities, experience, education, credentials, and internal equity when determining the base salary offered. Roles are eligible for additional rewards including annual incentive payments based on individual and company performance.

If end date is listed, the posting will come down at 12:00 am on that date:

Monday August 17, 2026

All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, ethnicity, age, disability, genetic information, military service or status, pregnancy, marital status, sexual orientation, gender identity or expression, or any other class, trait, or status protected by law.