About Ameren Missouri Ameren Missouri has been providing electric and gas service for more than 100 years, and our electric rates are among the lowest in the nation. Ameren Missouri's mission is to power the quality of life for our 1.2 million electric and 132,000 natural gas customers in central and eastern Missouri. Our service area covers 64 counties and more than 500 communities including the greater St. Louis area Position(s): 2

Hourly Rate Range:

$53.01

• 53.

76

Revision Date:

7/2/2026

Area/Div:

0901 ASSISTANT

CHEMICAL TESTER DUTIES

Under direct but not constant supervision to perform or assist in performing special and standard chemical analyses and experiments on oil, water, coal, and other materials; to determine need for appropriate chemical treatment of waters; and to do other related work as required.

SPECIAL RESPONSIBILITIES

To be careful in the use of laboratory equipment and other test equipment.

To hold as confidential:

costs, test results, reports, records, and data which may be considered confidential. To ensure the safety of those around the Assistant Chemical Tester when handling chemicals which may cause injury.

CONTACTS

Various energy center supervisors, laboratory supervisors, engineers, other chemical testers, and representatives of suppliers of chemical equipment and material.

WORKING CONDITIONS

The Assistant Chemical Tester is exposed to dust, fumes, hazardous chemicals, and heat. Appropriate precautions must be taken for each. The Assistant Chemical Tester must be able to work in a laboratory setting and energy center environment including outdoors.

QUALIFICATIONS

Applicant must be able to meet the essential functions of the Chemical Tester job classification with or without a reasonable accommodation. Applicant must demonstrate normal color vision. An applicant for this training program must have received a passing grade in the prerequisite courses and must have maintained a C average for the combined prerequisite courses. These courses must be taken from an institution accredited by the North Central Association of Colleges and Schools (or comparable association).

Required prerequisite courses are:

1. College Algebra

• 3 Semester Hours 2. General Chemistry I
• 4 Semester Hours 3. General Chemistry II/Qualitative Analysis
• 4 Semester Hours 4. Organic Chemistry
• 3 Semester Hours 5. Quantitative Analysis
• 3 Semester Hours 6. Instrumental Analysis
• 3 Semester Hours Prerequisite courses must be completed at the time of canvassing.

Proof of completion and/or enrollment (official transcripts) and grades for the above courses will be required no later than 20 calendar days after the down date of this posting. Forward that information to the Manager, Chemical Engineering and Laboratory Services, Mail Code 613. Applicant must pass the

EEI TECH

test. Successful bidder will be required to maintain a 70% grade average during each session of the company's training program.

Hourly Pay:

Grade Step OA 052 Step 1 of 2

• 53.01 USD Grade Step OA 052 Step 2 of 2 (Top Step)
• 53.

76 USD Position is eligible for annual incentive payments based on company performance and subject to sole management discretion. Visit our Benefits & Perks Page for more information on benefits provided to regular full-time employees. If end date is listed, the posting will come down at 12:00 am on that date: Friday July 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.