Simulator Software Engineer

Company: Constellation Energy
Location: Decatur
Posted on: February 21, 2026

Job Description:

Simulator Software Engineer - Sr Simulator Software Engineer to be filled at Clinton Nuclear Power Station in Clinton, IL. This is a multi-level opening that can be filled at the Simulator Software Engineer level or the Sr Software Engineer level. Please see the minimum qualifications for each level below. Who We Are As the nation's largest producer of clean, carbon-free energy, Constellation is focused on our purpose: accelerating the transition to a carbon-free future. We have been the leader in clean energy production for more than a decade, and we are cultivating a workplace where our employees can grow, thrive, and contribute. Our culture and employee experience make it clear: We are powered by passion and purpose. Together, we're creating healthier communities and a cleaner planet, and our people are the driving force behind our success. At Constellation, you can build a fulfilling career with opportunities to learn, grow and make an impact. By doing our best work and meeting new challenges, we can accomplish great things and help fight climate change. Join us to lead the clean energy future. Total Rewards Constellation offers a wide range of benefits and rewards to help our employees thrive professionally and personally. We provide competitive compensation and benefits that support both employees and their families, helping them prepare for the future. In addition to highly competitive salaries, we offer a bonus program, 401(k) with company match, employee stock purchase program comprehensive medical, dental and vision benefits, including a robust wellness program paid time off for vacation, holidays, and sick days and much more. Simulator Software Engineer - Expected salary range of $105,300 to $117,000, varies based on experience, along with comprehensive benefits package that includes bonus and 401(k). Sr Simulator Software Engineer - Expected salary range of $125,100 to $139,000, varies based on experience, along with comprehensive benefits package that includes bonus and 401(k). Primary Purpose of Position Responsible for creating and modifying simulation software logic and dynamic models used at a nuclear power plant in the Main Control Room Simulator, including simulator software maintenance, model minor plant modifications, and enhancements with minimal support. Functions independently and advises Constellation's Training Department on simulator technology. Coordinate simulator tasks and collaborate across teams as needed. Works closely with the training department, project managers, and Clean Energy Center (CEC) engineers to ensure compliance with project needs. The role is centered on the development and improvement of new and existing features. Additionally, the role involves reviewing peers' code, advocating for standard development methodologies, and participating in an inclusive, energetic, and highly cross-functional team. Expected to work efficiently, independently, and with minimal supervision. Primary Duties and Accountabilities CEC Main Control Room Simulator Projects: Participate in the planning, designing, building, or managing of simulator solutions. Participate in planning activities for assigned CEC. Create, modify, and document simulation software logic and dynamic models to meet business needs. Software configuration management. Participate in finding technology solutions by weighing advantages of technology trends, market availability of products, risks, and benefits of technology to meet business needs. Participate in identifying risks and issues that affect the projects. Provide second tier service to another simulator, as required, to backup that CEC Simulator Software Engineer with little or no assistance. Participates in projects for other CECs in the fleet as required. Engage with business partners to gather information, analyze requirements and deliver practical, efficient and cost-effective solutions that satisfy business needs. Perform other job assignments and duties as directed by management or pursuant to company policy, including but not limited to emergency response, departmental coverage, call outs, and support of outage activities in positions outside the department. Simulator Software Engineer - Job Code XSSD Minimum Qualifications Bachelor's degree in engineering (chemical, civil/structural, electrical, industrial, mechanical or nuclear) or related science with 2 years of related experience (e.g. programming technologies) OR Associate's degree in engineering (chemical, civil/structural, electrical, industrial, mechanical or nuclear) or related science with 4 years of related experience (e.g. programming technologies) Maintain minimum access requirements or unescorted access requirements, as applicable, and favorable medical examination and/or testing in accordance with position duties Sr Simulator Software Engineer - Job Code XSSE Minimum Qualifications Bachelor's degree in engineering (chemical, civil/structural, electrical, industrial, mechanical or nuclear) or related science with 5 years of related experience (e.g. programming technologies) OR Associate's degree in engineering (chemical, civil/structural, electrical, industrial, mechanical or nuclear) or related science with 7 years of related experience (e.g. programming technologies) Maintain minimum access requirements or unescorted access requirements, as applicable, and favorable medical examination and/or testing in accordance with position duties Simulator Software Engineer - Job Code XSSD Preferred Qualifications Bachelor's degree in mechanical engineering or nuclear engineering with 3 years of engineering experience Proficient in FORTRAN and C programming languages Knowledge of graphic design software Experience with Visual Studio Experience with engineering print reading Experience leading small projects or sub-teams Experience with GIT configuration management Experience with installing, configuring, and maintaining Windows Operating Systems Familiarity with network topology Familiarity with creating software interface protocols Teamwork and self-motivation skills to achieve success in a rapidly evolving environment Excellent communication skills (written and verbal) for conveying complex findings to non-technical stakeholders Understanding of advanced programming concepts, data structures, and algorithms Sr Simulator Software Engineer - Job Code XSSE Preferred Qualifications Bachelor's degree in mechanical engineering or nuclear engineering with 5 years of engineering experience Proficient in FORTRAN and C programming languages Knowledge of graphic design software Experience with Visual Studio Experience with engineering print reading Experience leading small projects or sub-teams Experience with GIT configuration management Experience with installing, configuring, and maintaining Windows Operating Systems Familiarity with network topology Familiarity with creating software interface protocols Teamwork and self-motivation skills to achieve success in a rapidly evolving environment Excellent communication skills (written and verbal) for conveying complex findings to non-technical stakeholders Understanding of advanced programming concepts, data structures, and algorithms

Keywords: Constellation Energy, Normal , Simulator Software Engineer, Engineering , Decatur, Illinois