Working at Ameren | Glassdoor

Ameren Overview

Saint Louis, MO
5001 to 10000 employees
Company - Public (AEE)
$5 to $10 billion (USD) per year
We're Ameren Corporation (AEE), a St. Louis-based, Fortune 500 company that powers the quality of life for millions of people throughout Illinois and Missouri. Ameren Illinois provides electric distribution and transmission service, as well as natural gas ... Read more

Mission: To power the quality of life.

Company Updates

  • We're proud to be certified as a Great Place to Work. Learn more about Ameren and what it's like to work here.

    Ameren Corporation


  • At Ameren, we're focused on building a diverse culture where opinions are shared and the best solutions are put into action. We're proud to be named one of America's Best Employers for Diversity by Forbes.

    America's Best Employers For Diversity

    Forbes worked with research firm Statista to compile the definitive list of the best employers for diversity in America. Statista surveyed 30,000 U.S. employees and did research on dimensions like a company's leadership team and board diversity to inform the list.

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Ameren – Why Work With Us?

Employing more than 9,000 co-workers throughout Illinois and Missouri, Ameren powers the quality of life for 2.4 million electric customers and more than 900,000 natural gas customers across a 64,000-square-mile area.

Ameren Corporation (Ameren) is the parent holding company of:

  • Ameren Illinois, based in Collinsville, Illinois
  • Ameren Missouri, based in St. Louis, Missouri

Also included are the following operating entities:

  • Ameren Services, based in St. Louis, provides support services to the corporation.
  • Ameren Transmission Company, based in St. Louis, was formed in July 2010. It is dedicated to electric transmission infrastructure investment and expanding Ameren’s transmission system.

Learn more about Ameren at

Electricity and natural gas are critical in our daily lives. People require energy to heat and cool their homes, and run businesses and schools. The energy we provide is also needed to save lives and respond to emergencies. With such a vital purpose, Ameren strives to keep energy safe, reliable and reasonably priced for all. As a Fortune 500 company, we serve as an engine that powers economic investment and community improvement in Illinois and Missouri.

Every day, we're working hard to provide more reliable energy, reduce outages and restore power faster than ever before. It's all part of our ongoing commitment to keep pace with future energy needs, as we proudly continue to serve, support and invest in the communities we call home.

Ameren Illinois delivers electricity to 1.2 million customers in more than 1,200 communities with a service territory spanning 43,700 square miles. Ameren Illinois’ complex delivery system includes about 4,500 miles of electric transmission lines and 46,000 miles of distribution lines. The natural gas operations of Ameren Illinois rank as the state’s third largest natural gas distributor, serving 816,000 in central and southern Illinois. Ameren Illinois’ natural gas delivery system includes 18,200 miles of transmission/distribution mains and 12 underground storage fields with a total capacity of approximately 25 billion cubic feet.

Ameren Missouri provides electric service to approximately 1.2 million customers across central and eastern Missouri, including the greater St. Louis area. Ameren Missouri provides electric service to 63 counties and more than 500 towns. More than half (53 percent) of Ameren Missouri’s electric customers are located in St. Louis and St. Louis County. Ameren Missouri is also the state’s second largest distributor of natural gas. Ameren Missouri supplies natural gas service to approximately 130,000 customers. Ameren Missouri serves gas customers in more than 90 communities, including towns in southeast, central and eastern Missouri. The company owns 3,300 miles of natural gas transmission and distribution mains.

Our co-workers are our most valuable resource. Ameren would not exist without a well-trained, well-equipped team to carry out our shared mission: To Power the Quality of Life. Millions of people and thousands of businesses in Illinois and Missouri are counting on our people for dependable energy, 365 days a year. That compels us to keep our workforce safe and well; to prepare them to perform under challenging conditions; and to provide opportunities for both personal and professional growth. At the same time, we must nurture the next generation of talent in order to sustain our company and drive innovation.

What’s it like to work with us? Our workforce is dedicated to keeping the lights on and the gas flowing - 24 hours a day, 365 days a year. We focus that same kind of dedication on building a diverse culture where opinions are shared and the best solutions are put into action.

You’ll find we care about our employees as much as we care about our community. We’re committed to offering benefits, opportunities and enrichment that support our employees and our mission. Life at Ameren is based on our vision, mission, and values.

  • Vision: Leading the way to a secure energy future.
  • Mission: To power the quality of life.
  • Values: Our values - the way we do business - include safety, integrity, respect, accountability, stewardship, teamwork and commitment to excellence.

Careers at Ameren are as diverse and wide-ranging as the candidates we seek to fill them. Learn more about our diverse and inclusive work environment with competitive salaries, great benefits and ongoing professional training. 

We offer a variety of opportunities in the following fields:

  • Accounting and Finance
  • Administrative
  • Communications
  • Customer Service
  • Data Analytics
  • Engineering
  • Energy Delivery
  • Legal and Regulatory
  • Real Estate
  • And more

Providing energy to our customers in a safe, reliable, efficient and environmentally responsible manner requires a large, highly-skilled team of employees who embrace the Ameren commitment and their role in achieving it. 

Behind the scenes at Ameren, accountants, administrative and clerical, human resources, information technology, energy traders, corporate communications and security professionals maintain the daily operations of our corporation. Each of them is important to our success, and even though many of these professionals have little contact with our customers during the course of their work, it is still important that they embody our core values of integrity, respect, accountability, stewardship, teamwork and commitment to excellence because these values run deep throughout Ameren. 

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By almost any measure- size, assets, revenues, kilowatthour sales, or market value- Ameren Corporation ranks among the top 25% of the nation's utilities. 

Ameren's competitive, attractive and comprehensive benefits package reflects the corporation's size and stature as one of the nation's lowest-priced, highest-quality energy providers. 

Benefits include:

  • Medical, Dental and Vision Insurance
  • Paid Holidays, Vacations and Sick Leave
  • 401(k) and Cash Balanced Pension
  • Tuition Reimbursement
  • Career Growth and Individual Development Opportunities
  • Wellness Programs
  • Work- Life Employee Assistance Programs

Learn more about our benefits offering by visiting

Ameren Reviews

  • "Company has great benefits, reputation, and adaptability."

    • Work/Life Balance
    • Culture & Values
    • Career Opportunities
    • Comp & Benefits
    • Senior Management
    Current Employee - Associate Engineer in Decatur, IL
    Current Employee - Associate Engineer in Decatur, IL
    Positive Outlook
    No opinion of CEO

    I have been working at Ameren full-time (More than a year)


    Ameren includes Dental, standard Health, and Vision insurance as their employee health benefits. They also offer special savings accounts such as HSAs (Health Savings Accounts which are exempt on taxes for your health expenses). They also offer a 401k from the get-go and a company pension after being vested in the company for a number of years.

    Pair this with the reputation of the company and the general willingness to try and constantly improve and make both the company and the business better it is a great place to work.

    I have talked with many managers and supervisors across the company through email and everyone works very harmoniously and patiently with each other, for the most part.


    There are some individuals, as I am sure there are everywhere that do not get properly disciplined for their work ethic or behavior. These always seem to be HR nightmares or from supervisors/managers not wanting to have to deal with it.

    Most promotions across Ameren are horizontal over periods of a year. If you want rapid raises you need to hop up to either higher technical jobs or management.

    Advice to Management

    Not much... you guys are doing quite well.

See All 270 Reviews

Ameren Photos

Ameren photo of: Team huddle.
Ameren photo of: Stanley Cup visits Ameren's General Office Building in St. Louis
Ameren photo of: Co-workers can collaborate in our newly re-designed Workplace Cafe
Ameren photo of: Digital technology supports collaboration throughout the organization
Ameren photo of: Our on-site gym offers a variety of classes and equipment for a healthy lifestyle
Ameren photo of: Co-workers collaborate to find the right solutions for our customers
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Ameren Interviews



Getting an Interview

Getting an Interview




  1. Featured Interview

    Helpful (5)  

    Supervisor Electric Operations Interview

    Anonymous Employee in Maryville, IL
    Accepted Offer
    Positive Experience
    Average Interview


    I applied online. The process took 2 weeks. I interviewed at Ameren (Maryville, IL) in August 2019.


    Step 1. Phone: HR rep calls to make sure you meet the qualifications for the position and recommends you for an interview with the hiring manager
    Step 2. Face-to-Face: You will receive and email stating the time and place of the interview along with the 3 panel members and their respective positions at Ameren. It is a Behavioral interview in which case they are expecting answers in the STAR method. Answers could be based on passed work, volunteer, or personal experience.

    Interview Questions

    • 5-7 questions based on Thinking Customer, Inspiring and Engaging, Fostering Innovation, Driving Results, Championing Learning, Building Trust, & Being Strategic. Each panel member will ask a question and then as you answer will be writing down information based on your answer. Don't let this distract you.   1 Answer
See All 116 Interviews

Ameren Awards & Accolades

  • 2017 Disability Equality Index® Best Places to Work, American Association of People with Disabilities, 2017
  • Top 5 Utilities for Diversity, DiversityInc, 2017
  • Best Workplaces in Manufacturing & Production 2020, Fortune and Great Place to Work, 2019
  • Great Place to Work Certified, Fortune and Great Place to Work, 2018
  • Great Place to Work Certified, Fortune and Great Place to Work, 2019
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