A

Ameren

Provides electric and natural gas utilities

Nuclear Health Physicist

Full-Time
$84.4k - $172.2k+ Annual incentive payments
Mid, Senior, Expert
Steedman, MO, USA
In Person
Facilities OperationsEnvironmental Health & Safety

About the job

Requirements
  • Staff Health Physicist level requires a high school education or equivalent and a minimum of four years of applicable experience; a master's degree may substitute for one year of experience, and a doctorate may substitute for two years if coursework is related to radiation protection.
  • Senior Health Physicist level requires a minimum of six years of applicable experience. A Bachelor of Science degree in chemistry, physics, health physics, nuclear engineering, engineering, or equivalent, including formal training in radiation protection, is desired; eight years of applicable experience may substitute for a degree. A master's degree may substitute for one year of experience, and a doctorate may substitute for two years if coursework is related to radiation protection. NRRPT certification or ABHP Part 1 is required.
  • Consulting Health Physicist level requires a minimum of six years of applicable experience and a Bachelor of Science degree in chemistry, physics, health physics, nuclear engineering, engineering, or equivalent, including formal training in radiation protection. A master's degree may substitute for one year of experience, and a doctorate may substitute for two years if coursework is related to radiation protection. ABHP certification or at least one year of experience as a fully qualified Radioactive Material Shipper at a commercial nuclear facility is required.
  • Proficiency with common computer programs, especially Microsoft applications.
  • The successful candidate must be able to respond to the plant within the required Emergency Response Organization response time.
  • Callouts, rotating or outage schedules, and on-call duty periods may be required to support plant operations and the Emergency Response Organization.
Responsibilities
  • Provide technical support and professional expertise to ensure radiation protection programs protect the health and safety of plant personnel and the public.
  • Review changes to federal, state, and local radiation protection regulations to ensure continued compliance.
  • Ensure programs and procedures comply with federal and state regulations and national and international industry standards.
  • Coordinate corrective action document responses for the Radiation Protection Department.
  • Review RFRs to ensure appropriate actions are taken to review and address RFR requirements.
  • Develop and maintain analytical efforts in applied radiation protection to support plant operations.
  • Perform evaluations, calculations, and problem solving for radiological issues.
  • Compile and submit reports to ensure compliance with current federal regulatory requirements, technical specifications, and state legislation.
  • Prepare and review changes to procedures, the Final Safety Analysis Report, Technical Specifications, and other documents.
  • Prepare reports to support federal regulations and plant operations.
  • Provide support for special research and development work.
  • Prepare equipment and software specifications, and evaluate equipment and software for suitability of use.
  • Perform in-house surveillance activities to supplement independent quality control and quality assurance activities.
  • Set, reinforce, and communicate high standards; promote teamwork and excellence; foster nuclear, radiological, human performance, and industrial safety behaviors; coach workers; implement performance improvement initiatives; participate in worker training and development; develop and broaden worker skills; oversee on-the-job training; and support self-assessments.
  • Assume Emergency Response Organization duties in accordance with the Callaway Plant Radiological Emergency Response Plan.
Desired Qualifications
  • For Staff Health Physicist level, NRRPT certification or ABHP Part 1 is preferred.
  • Strong interpersonal and communication skills, as well as leadership capabilities.

About the company

A

Ameren

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Ameren provides electric and natural gas services in Illinois and Missouri, with Ameren Illinois handling distribution and Ameren Missouri generating and distributing electricity and distributing gas. It operates a regional electric grid and power generation capacity above 10,200 megawatts to serve about 2.4 million electric customers and 900,000 natural gas customers across 64,000 square miles. It ranks among the largest investor-owned utilities in the United States, distinguished by its large service area, mix of generation and distribution, and Missouri’s vertically integrated electric service. Its goal is to reliably deliver affordable energy while investing in infrastructure and grid safety to meet customers’ needs.

Company Size

5,001-10,000

Company Stage

IPO

Headquarters

St. Louis, Missouri

Founded

1881

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Simplify's Take

What believers are saying

  • Ameren reaffirmed 2026 EPS guidance of $5.25-$5.45 after Q2 2026 results.
  • September 2026 West Alton filing targets 2.1 GW in-service by 2031.
  • Ameren added 350 MW of solar in 2026 and advanced battery-storage projects.

What critics are saying

  • Missouri PSC can reject West Alton and the 2026 IRP, freezing growth plans.
  • Ameren abandoned net-zero language while adding nine gas plants, inviting activist and legal attacks.
  • Data-center demand drives everything; missed load forecasts strand West Alton, Labadie, and gas pipeline investments.

What makes Ameren unique

  • Missouri and Illinois regulated franchises turn grid buildout into compounding rate base growth.
  • Ameren locked 3.4 GW of Missouri construction agreements, including 2.8 GW signed ESAs.
  • Goalby Substation showed Ameren will deploy GIS to solve hard site constraints.

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Benefits

  • Health Insurance
  • 401(k) Company Match
  • Paid Vacation
  • Paid Holidays
  • Parental Leave

Company News

KBSI FOX 23
Oct 13th, 2026
Cape Girardeau Ameren lineworkers to compete in international competition.

Cape Girardeau Ameren lineworkers to compete in international competition. FOX23 News at 9 p.m. 4 hours ago CAPE GIRARDEAU, Mo., (KBSI) - Ameren lineworkers from Missouri and Illinois are preparing to compete against utility workers from around the world at the 42nd International Lineman's Rodeo in Overland Park, Kansas. The competition, scheduled for Oct. 14-17, brings together lineworkers and apprentices to demonstrate their technical skills, teamwork and safety practices. Ameren Missouri will send four journeyman teams, 10 apprentices and nine competition officials and committee members. Among those competing are three lineworkers from Ameren's Cape Girardeau Operating Center: Kolter McBride, Brendan Wilkens and Joshua Jones. Ameren Illinois will send five journeyman teams, four apprentices and six competition officials and committee members. Participants include workers from Belleville, Marion, Centralia, Decatur and other operating centers across the state. The competition, often called the "Lineman Olympics," features events designed to simulate real-world situations utility workers face on the job. Events include the Hurtman Rescue, which tests a worker's ability to rescue an injured colleague from a utility pole, and the Pole Climb, a timed event that evaluates climbing techniques and safety procedures. Competitors will also participate in two mystery events that simulate unexpected situations in the field. Apprentices must complete a written examination in addition to the hands-on challenges. Participants are evaluated on safety, job knowledge, work practices and overall performance. "The work our lineworkers and apprentices perform is essential to delivering safe and reliable energy to our customers," said Landy Wince, senior director of division operations at Ameren Missouri. "This event highlights the professionalism, training and dedication that define their craft and allows them to showcase those skills on an international stage." Jason Klein, vice president of electric operations at Ameren Illinois, said the competition also gives workers an opportunity to learn from others in the industry. "The Lineman's Rodeo is a chance for our lineworkers and apprentices to showcase the skills they use every day to keep the lights on for our customers," Klein said. The event also allows families to see firsthand the skills and safety practices lineworkers use in their daily work.

PR Newswire
Oct 13th, 2026
Arevon secures three 20-year Renewable Energy Credit contracts for its 200 megawatt Panther Energy Project in Illinois.

Arevon secures three 20-year Renewable Energy Credit contracts for its 200 megawatt Panther Energy Project in Illinois. Oct 13, 2026, 08:00 ET Agreements with Ameren Illinois, ComEd, and MidAmerican advance the Perry County solar project and the state's energy goals PERRY COUNTY, Ill. and SCOTTSDALE, Ariz., Oct. 13, 2026/PRNewswire/ - Arevon Energy, Inc., a leading American energy developer, owner, and operator, today announced it has executed three 20-year Indexed Renewable Energy Credit (REC) contracts with Ameren Illinois Company (Ameren Illinois), Commonwealth Edison Company (ComEd), and MidAmerican Energy Company (MidAmerican) for its 200 megawatt (MWac)/275 megawatt (MWdc) Panther Energy Project in Perry County, Illinois. The Panther Energy Project is anticipated to begin construction in 2027 and reach completion in 2028, creating an estimated 200 construction jobs. The project is expected to contribute an estimated $20 million in property tax payments over its operating life, benefiting area schools, infrastructure, and other public services while driving additional economic activity. Arevon has established a local office in Pinckneyville, providing landowners, residents, and other community members with direct access to the Panther project team during development and upcoming construction. Once operational, the project is expected to generate enough electricity to power more than 37,000 Illinois homes. The long-term commercial agreements follow Panther Energy's selection in the Illinois Power Agency's (IPA) Summer 2026 Indexed REC procurement, which was approved by the Illinois Commerce Commission (ICC). Under the IPA's procurement methodology, Panther Energy was selected to deliver 421,131 RECs in the first year, which will be allocated among Ameren Illinois, ComEd, and MidAmerican through separate long-term contracts with each utility. The Indexed REC structure provides long-term revenue certainty that supports the development and financing of new renewable energy projects. The RECs acquired by the utilities will help meet their obligations under the Illinois Renewable Portfolio Standard. The Summer 2026 procurement was conducted pursuant to Illinois's Climate and Equitable Jobs Act (CEJA), which became law in 2021 and established the Indexed REC pricing structure for utility-scale renewable energy procurements. In total, the ICC approved contracts for 1.55 gigawatts of new renewable energy capacity, including four utility-scale solar projects totaling 740 MWac, through the Summer 2026 procurement. "Arevon is proud to work with Ameren Illinois, ComEd, and MidAmerican through the IPA procurement to move Panther Energy closer to construction and contribute to Illinois's energy goals," said Tommy Greer, Chief Commercial Officer at Arevon. "We appreciate the collaboration of Perry County residents, landowners, and local officials throughout the project's development. We look forward to delivering reliable, homegrown energy to the grid while creating jobs, generating long-term economic benefits, and investing in the local community." Arevon is actively growing its portfolio in the Midwest region of the United States through the operations, construction, and continued development of energy facilities. Recent milestones in the Midwest include the start of operations at its 430 MWdc Kelso Solar Project in Missouri and Ratts 1 and Heirloom Solar Projects in Indiana, which have a cumulative capacity of 264 MWdc. Ratts 1 and Heirloom were awarded the 2025 Proximo North America Solar Deal of the Year. The company has also nearly completed construction on its 124 MWdc Big Muddy Solar Project in Jackson County, Illinois. In addition, Arevon developed and managed construction of the 251 MWdc Gibson Solar Project and the 228 MWdc Posey Solar Project in Indiana on behalf of local utilities. About Arevon Energy, Inc. Arevon is a U.S. energy leader committed to powering America with affordable, reliable, and secure homegrown energy. Headquartered in Scottsdale, Arizona, and with a regional office in New York City, the company's experienced and dedicated team develops, finances, builds, owns, and operates renewable energy projects nationwide. With a strong track record in utility-scale solar and energy storage, Arevon is a trusted partner to utilities and businesses seeking cost-effective, sustainable energy solutions. By prioritizing American manufacturing and domestic energy production, the company invests in U.S. jobs, strengthens local economies, and advances the country's energy independence. Arevon owns and operates more than 6.3 gigawatts of solar and energy storage projects across 18 states, is currently constructing 370 megawatts (MW) of new capacity, and maintains a robust development portfolio. The company has also partnered with local utilities to develop and build 480 MW of solar energy, ensuring each project was successfully integrated into their communities. Together, this scale, execution, and ongoing development activity position Arevon at the forefront of American energy innovation. For more information, visit arevonenergy.com. SOURCE Arevon

MarketScreener
Oct 8th, 2026
Ameren: Transmission partnership to leave lasting land improvements at NEMO Fairgrounds.

Ameren: Transmission partnership to leave lasting land improvements at NEMO Fairgrounds. Published on 10/08/2026 at 12:07 pm EDT Ameren Transmission partnership to leave lasting land improvements at NEMO Fairgrounds Key Takeaways: * Ameren Transmission Company of Illinois (ATXI) reached an agreement with the NEMO Fair Association to establish a temporary storage yard to hold supplies for a major transmission project in northern Missouri. * Once the transmission project is complete, the NEMO Fair Association will benefit from approximately 35 acres of upgraded, level ground that can be used for additional parking, storage or other future needs. * Construction on the laydown yard began in August 2026, and it is expected to be completed by the end of the year. Above: Ameren Transmission will provide 35 acres of upgraded, level ground for the NEMO Fair Association to use for additional parking, storage or other future needs. KIRKSVILLE, Mo. (Oct. 8, 2026) - Ameren Transmission Company of Illinois (ATXI) recently reached an agreement with the NEMO Fair Association to establish a laydown yard to store equipment and materials for Ameren's Northern Missouri Grid Transformation Program. Once the transmission project is complete, the NEMO Fair Association will benefit from approximately 35 acres of upgraded, level ground that can be used for additional parking, storage or other future needs. "This partnership is a win-win for ATXI and the NEMO Fair," said Nick Rudis, project manager for Ameren. "Major infrastructure projects require space to safely store materials and equipment. By partnering with the NEMO Fair Association, we're able to strengthen the grid and support this region's future energy needs while also leaving behind improvements that can support the fairgrounds for years to come." Workers are leveling the land, adding rock and installing fencing as part of site improvements. Construction of the laydown yard is expected to be completed by the end of the year, and ATXI has signed a four-year lease agreement to use the land. "We're always on the lookout for opportunities that help us improve the fairgrounds and better serve the community," said Alan Whittom, president of the NEMO Fair Association's board of directors. "We look forward to using the additional space. It will give us flexibility to support activities and events long after the project is completed." After construction is finished, the laydown yard will hold supplies for the Northern Missouri Grid Transformation Program. ATXI, Missouri Joint Municipal Electric Utility Commission (MJMEUC) and Ameren Missouri are working together on this portfolio of new energy projects. The program includes more than 255 miles of new 345 kilovolt (kV) transmission lines developed in two phases across northern Missouri. To learn more about the program, visit the website: https://www.ameren.com/reliability/transmission/northern-missouri. About Ameren Corporation St. Louis-based Ameren Corporation powers the quality of life for 2.5 million electric customers and more than 900,000 natural gas customers in a 67,700-square-mile area through its Ameren Missouri and Ameren Illinois rate-regulated utility subsidiaries. Ameren Illinois provides electric transmission and distribution service and natural gas distribution service. Ameren Missouri provides electric generation, transmission and distribution services, as well as natural gas distribution service. Ameren Transmission Company of Illinois develops, owns and operates rate-regulated regional electric transmission projects in the Midcontinent Independent System Operator, Inc. For more information, visit Ameren.com, or follow us at @AmerenCorp, Facebook.com/AmerenCorp, or LinkedIn.com/company/Ameren. Attachments * Original document * Permalink Disclaimer Ameren Corporation published this content on October 08, 2026, and is solely responsible for the information contained herein. Distributed via Public Technologies (PUBT), unedited and unaltered, on October 08, 2026 at 16:06 UTC. (C) Publicnow - 2026

GlobeNewswire
Oct 5th, 2026
Sustainable Supply Chain Alliance recognizes Sterling Solutions and Ameren with Transforming Supply Chain Award.

Sustainable Supply Chain Alliance recognizes Sterling Solutions and Ameren with Transforming Supply Chain Award. Proactive, collaborative site access planning on Ameren's LRTP Segment 14 transmission project delivers nearly $4 million in savings to date, with up to $20 million projected over the life of the program. PHOENIX, Ill., Oct. 05, 2026 (GLOBE NEWSWIRE) - Sterling Site Access Solutions, America's leading manufacturer of sustainably-sourced, domestically produced Cross Laminated Timber (CLT) mats, panels and systems, today announced that the Sustainable Supply Chain Alliance (SSCA) has honored Sterling and utility partner Ameren with its Transforming Supply Chain Award. The award recognizes the companies' work together on Ameren's Long Range Transmission Planning (LRTP) Segment 14 project, a 345kV multi-segment transmission build in which proactive, collaborative site access planning reduced schedule risk, lowered cost and advanced sustainability across the project's supply chain. "We are honored and grateful to have been recognized by the SSCA with this award, but it truly is the result of the leadership and strategic approach Ameren took when planning for this project," said Kaye Ceille, CEO of Sterling Solutions. "We've always preached that sustainability and cost-effectiveness go hand in hand, and the results of this project are a shining example of that philosophy." Site access is typically an afterthought on major transmission projects. On LRTP Segment 14, Ameren took a different approach, bringing Sterling into the planning process more than a year before the first mat reached the site. That runway gave the teams time for factory tours, product testing and full alignment across supply chain, procurement and field construction before ground was broken. Ameren was able to source site access materials directly from Sterling as a capital expense rather than leaving it embedded in a prime contractor's scope, reducing risk for Ameren and its contractors alike. A central part of the solution was the introduction of a new product to the Ameren system: Sterling's TerraLam(R) 5-ply Cross Laminated Timber mats. Ameren purchased 5,000 TerraLam mats, manufactured at Sterling's Phoenix, Illinois facility and delivered on a just-in-time basis, to kick off the project. The mats will be used for the two-year construction phase and retain more than half of their useful life for deployment on future projects. The results to date include: * Nearly $4 million in savings realized already, with up to $20 million projected in full project impact * 5,000 TerraLam CLT mats delivered just-in-time, with 60% of product life remaining at the end of the project * 125 fewer truckloads of material moving through local communities, a 33% reduction in construction traffic and 38 metric tons of CO2 avoided * 52% (17) fewer construction crew days required for installation helping to mitigate labor shortages "We knew that we couldn't approach this project with the old playbook - too much has changed across the supply chain," said Frank Niemerg, Director, Transmission Construction Services at Ameren. "By working closely and early with all of our partners, including Sterling, we were able to avoid challenges we might have otherwise encountered deeper into the project. Instead, we delivered a project on time and on budget, all while minimizing the environmental impact." About Sterling Solutions Sterling is America's leading manufacturer of high-quality, cost-effective Cross Laminated Timber (CLT) mats, panels and systems. Our TerraLam(R) CLT products are sustainably-sourced and domestically produced at commercial-scale plants in Illinois and Texas. Our Site Access unit provides full-service matting and bridging solutions to utility, civil and commercial construction industries, including Site Access Planning, Environmental Compliance and consulting services. In some markets, we offer Right of Way Site Preparation and Restoration, Access Road & Pad Construction, and Staging & Laydown Yards. For more than 75 years, Sterling has innovated and delivered sustainable solutions meeting customer needs, creating jobs and economic opportunity across the supply chain, and reducing risk and environmental impact of industrial, commercial and residential construction projects. More information is available at www.sterlingsolutions.com. About Ameren St. Louis-based Ameren Corporation powers the quality of life for 2.5 million electric customers and more than 900,000 natural gas customers in a 64,000-square-mile area through its Ameren Missouri and Ameren Illinois rate-regulated utility subsidiaries. Ameren Illinois provides electric transmission and distribution service and natural gas distribution service. Ameren Missouri provides electric generation, transmission and distribution service, as well as natural gas distribution service. Ameren Transmission Company of Illinois develops, owns and operates rate-regulated regional electric transmission projects in the Midcontinent Independent System Operator, Inc.

Lincoln University of Missouri
Oct 5th, 2026
Ameren Missouri awards $100,000 grant to Lincoln University of Missouri for student success, workforce readiness.

Ameren Missouri awards $100,000 grant to Lincoln University of Missouri for student success, workforce readiness. Office of Communications and Marketing Young Hall 820 Chestnut Street Jefferson City, MO 65101 * home * 2026 * Ameren Missouri awards $100,000 grant to Lincoln University of Missouri for student success, workforce readiness. October 5th, 2026 Lincoln University has received a $100,000 grant from Ameren Missouri to support student retention, scholarships, career preparation and workforce development. From left: President John Mosley, Curator Tina Shannon, Reyna Spencer-Gurlly and Bryan Daniels. Lincoln University of Missouri has received a $100,000 grant from Ameren Missouri to support the University's "Strengthen Education Opportunity in Mid-Missouri" initiative, expanding opportunities for student success, career preparation and stronger connections between the University and the communities it serves. "At Ameren Missouri, we believe investing in people is one of the most meaningful ways we can invest in the future of our communities," said Tina Shannon, Lincoln University Board of Curators president and senior director of government relations for Ameren Missouri. "Lincoln students have tremendous potential, and I am especially proud to see this partnership connect them with the experiences and support they need to build their futures while strengthening Missouri's workforce and communities." The one-time grant will support efforts to help students persist to graduation and prepare for successful careers. Funding will support student retention and engagement; scholarships and financial assistance for career pathways in engineering, energy, skilled trades, information technology, environmental sciences, agriculture, business and other STEM-related fields; and career-readiness opportunities such as internships, mentorship, professional development and workforce credentialing. "We are grateful to Ameren Missouri for investing in Lincoln University students and in the future workforce of our region," said Lincoln University President John B. Moseley. "This partnership will help reduce barriers to student success while expanding the experiences and career connections that prepare our students for life after graduation. It is an investment in their futures and in the communities they call home." Through the initiative, Lincoln University will build on its work to connect education with career pathways and workforce demand while reducing barriers that can prevent students from completing their degrees. The grant will support programming through Dec. 31, 2027. The partnership builds on Lincoln University's growing role in workforce development, including its Employment Academy and recent selection to lead workforce development efforts as part of the National Science Foundation's Critical Materials Crossroads Engine, a regional initiative focused on strengthening the workforce and innovation ecosystem across Missouri and Kansas. Ameren Missouri will be recognized as a Lincoln University partner throughout the 2026-27 academic year, including as a supporting sponsor of Lincoln University's 160th Birthday Bash Scholarship Soiree during Homecoming 2026, an event supporting student scholarships. University News