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

Location: West Alton, MO (St. Charles County) — near New Town and Alton, IL
Facility: Sioux Energy CenterAbout the Facility

This role is located at Sioux Energy Center in West Alton, Missouri—a major industrial power facility generating approximately 972 MW of electricity from two high-capacity steam turbine units. The indoor environment features expansive turbine halls, advanced steam systems, large maintenance workshops equipped for heavy-duty industrial equipment, and secure control centers—offering extensive space ideal for repair, technical, and hands-on roles.

Summary

You will perform precision welding and heavy mechanical repair work across power plant equipment to support safe and efficient plant operations.

Key ResponsibilitiesTroubleshoot and perform highly skilled electric arc and gas welding, cutting, brazing, pipefitting, and insulation installation/removal on power plant equipment.Perform certified welding on boiler pressure parts, pressure vessels, and piping in accordance with ASME codes, subject to insurance underwriters’ inspection/certification.Execute a broad range of mechanical maintenance, including:Repair/replacement of boiler tubesStructural steel erectionReplacement of liner plates in fans, coal chutes, and hoppersWelding repairs to castings and equipmentPiping/valve work (measuring, layout, cutting, threading, bending, fitting, installation)Replacement of flange, valve, and heater gaskets; valve repacking, repair, overhaulCleaning/replacement of condenser and heat exchanger tubesWhere applicable, repair of traveling water screensWorking Conditions & HazardsFull range of temperatures from very hot to sub-freezing; sudden changes may occur.Exposure to noise, dust, dirt, fumes, odors, drafts, inclement weather, heights, and confined spaces.Hazards typical of welding and heavy industrial maintenance work, including burns, flashes, and risks related to elevated work and energized equipment areas.QualificationsHigh School Diploma or GED
AND either:Completion of a 2 year technical college program and 5 years working as a Certified Welder Repairman, ORCompletion of a certified apprentice program and 5 years working as a Certified Welder Repairman, ORTen (10) years working as a Certified Welder Repairman.Must be able to climb ramps, ladders, and stairs, work at heights and in confined spaces.Department

This position is within our Energy Center Shop Maintenance Department.

Additional Information

Ameren’s selection process includes a series of interviews and may include candidate testing and/or an individual aptitude or skill-based assessment. Specific details will be provided to qualified candidates.

Hourly Pay:

Grade Step OA 059 Step 1 of 1 (Top Step) - 52.97 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:

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.