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Constellation Energy
Constellation Energy

60 Constellation Senior Software Developer Jobs Hiring Near You

Constellation Energy

Simulator Software Engineer

Weldon, IL · On-site

$105.30K - $117K/yr

... 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 ...

Constellation Energy

Simulator Software Engineer

Maroa, IL · On-site

$105.30K - $117K/yr

... 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 ...

Constellation Energy

Simulator Software Engineer

Kenney, IL · On-site

$105.30K - $117K/yr

... 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 ...

Constellation Energy

Simulator Software Engineer

Beason, IL · On-site

$105.30K - $117K/yr

... 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 ...

Constellation Energy

Simulator Software Engineer

Mclean, IL · On-site

$105.30K - $117K/yr

... 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 ...

Constellation Energy

Simulator Software Engineer

Latham, IL · On-site

$105.30K - $117K/yr

... 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 ...

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Constellation Energy Jobs Information

What are the key skills and qualifications needed to thrive as a Senior Software Developer, and why are they important?

To thrive as a Senior Software Developer, you need deep expertise in programming languages, software architecture, and problem-solving, typically backed by a bachelor’s degree in computer science or a related field. Proficiency with development frameworks, version control systems like Git, and cloud platforms such as AWS or Azure is standard, and certifications in these areas can be beneficial. Leadership, strong communication, and mentoring abilities set standout candidates apart in this role. These skills ensure that complex projects are delivered efficiently, code quality is maintained, and junior team members are effectively guided for overall team success.

What kinds of projects and responsibilities can a Senior Software Developer expect to handle on a daily basis?

As a Senior Software Developer, you’ll typically be responsible for leading complex development projects, designing technical solutions, and mentoring junior team members. Daily tasks often include writing and reviewing code, participating in architecture discussions, collaborating with cross-functional teams (such as QA, product management, and DevOps), and troubleshooting high-level technical issues. You may also be involved in setting coding standards, conducting code reviews, and helping to plan sprints or project roadmaps.

What are Senior Software Developers?

Senior Software Developers are experienced professionals who design, develop, and maintain complex software applications. They often lead development teams, mentor junior developers, and make critical architectural decisions. Their responsibilities include writing high-quality code, troubleshooting technical issues, and ensuring that software projects meet performance and security standards. With deep expertise in programming languages and software engineering principles, they play a key role in delivering successful technology solutions for organizations.

What is the difference between Senior Software Developer vs Software Engineer?

AspectSenior Software DeveloperSoftware Engineer
CredentialsBachelor's degree in CS or related field; experience often 5+ yearsBachelor's or higher in CS or related field; similar experience levels
Work EnvironmentCollaborates on complex projects, mentors juniors, leads technical effortsDesigns, develops, tests software; may work on specific modules or systems
Industry UsageCommonly used in tech companies, startups, and enterprise firmsWidely used across industries, often interchangeable with developer roles

The main difference is that Senior Software Developers typically have more experience, leadership responsibilities, and focus on complex project oversight, while Software Engineers may focus more on designing and implementing software solutions. Both roles require similar credentials and are integral in software development teams, but Senior Software Developers often take on mentorship and strategic tasks.

Do workers at Constellation Energy get paid breaks?

Yes. Most people get paid breaks.
88% of people say they get paid breaks.
Based on data from 56 people who took the Breakroom Quiz between November 2024 and May 2026.

Does Constellation Energy pay people when they’re sick?

Yes. Most people get paid when they’re sick.
94% of people say they would get paid if they were sick but scheduled to work.
Based on data from 47 people who took the Breakroom Quiz between May 2025 and May 2026.

At Constellation Energy, are sick days and vacation days separate paid time off?

Sick days and vacation days are separate paid time off.
81% of people say they don’t have to use vacation days when they’re out sick.
Based on data from 43 people who took the Breakroom Quiz between May 2025 and May 2026.

Is the health insurance from Constellation Energy affordable enough for their workers?

Most people say the health insurance costs are okay.
98% of people say the health insurance costs are okay
Based on data from 43 people who took the Breakroom Quiz between May 2025 and May 2026.

Do people get paid time off at Constellation Energy?

Most people get paid time off work.
90% of people say they get paid time off.
Based on data from 49 people who took the Breakroom Quiz between May 2025 and May 2026.

How far ahead of time do people find out their work schedule?

Only some people find out their schedule four weeks ahead of time.
  • 23% of people with changing schedules find out their shifts one week or less ahead of time.
  • 17% of people with changing schedules find out their shifts two weeks ahead of time.
  • 0% of people with changing schedules find out their shifts three weeks ahead of time.
  • 60% of people with changing schedules find out their shifts four weeks or more ahead of time.

Based on data from 35 people who took the Breakroom Quiz between November 2024 and May 2026.

Do workers at Constellation Energy worry about hours?

Most people don’t worry about getting enough hours.
100% of people report they don’t worry about getting enough hours.
Based on data from 32 people who took the Breakroom Quiz between May 2025 and May 2026.

Do Constellation Energy workers get to choose the shifts they work?

Some people don’t get to choose which shifts they work.
64% report that they don’t have enough control over which shifts they work.
Based on data from 33 people who took the Breakroom Quiz between May 2025 and May 2026.

How easy is it for Constellation Energy workers to change shifts?

Some people find it hard to change shifts.
61% of people report that it’s hard to change shifts if they need to.
Based on data from 49 people who took the Breakroom Quiz between November 2024 and May 2026.

How easy is it to get time off at Constellation Energy?

Most people find it easy to get time off.
87% of people report it’s easy to get time off.
Based on data from 46 people who took the Breakroom Quiz between May 2025 and May 2026.

Do Constellation Energy managers change schedules at the last minute?

Most managers don’t change people’s schedules at the last minute.
94% of people say their manager doesn’t change their shift schedule at the last minute.
Based on data from 33 people who took the Breakroom Quiz between May 2025 and May 2026.

Do workers at Constellation Energy do extra work that they don't get paid for?

Rarely. Most people don’t do unpaid extra work.
84% of people report that they don’t do extra unpaid work.
Based on data from 32 people who took the Breakroom Quiz between May 2025 and May 2026.

How easy is it to take sick days at Constellation Energy?

Most people find it easy to take sick days.
93% of people report that it’s easy to take time off if they are sick.
Based on data from 46 people who took the Breakroom Quiz between May 2025 and May 2026.

Is working at Constellation Energy good if you’re a parent or caregiver?

Most parents and caregivers say this is a good place to work.
72% of people who care for a child or other relative report this is a good place to work.
Based on data from 39 people who took the Breakroom Quiz between November 2024 and May 2026.

Do people at Constellation Energy feel treated with respect by their managers?

Most people feel treated with respect by their managers.
81% of people say they’re treated with respect by their managers.
Based on data from 43 people who took the Breakroom Quiz between May 2025 and May 2026.

Do people at Constellation Energy get to take their breaks without interruption?

Most people get breaks without interruption.
70% of people report that they get to take their breaks without interruption.
Based on data from 33 people who took the Breakroom Quiz between May 2025 and May 2026.

Is it stressful to work at Constellation Energy?

Some people feel stressed out here.
66% of people say they often feel stressed out at work.
Based on data from 47 people who took the Breakroom Quiz between May 2025 and May 2026.

Do people at Constellation Energy enjoy their jobs?

Most people enjoy their job.
86% of people report they enjoy their job.
Based on data from 43 people who took the Breakroom Quiz between May 2025 and May 2026.

Do people at Constellation Energy recommend working with their team?

Most people recommend working with their team.
67% of people report that they would recommend working with their immediate team to a friend.
Based on data from 49 people who took the Breakroom Quiz between May 2025 and May 2026.

Do people get enough training when they start at Constellation Energy?

Most people got enough training when they started.
81% of people report they got enough training when they started working here.
Based on data from 47 people who took the Breakroom Quiz between May 2025 and May 2026.

Do people get support to advance at Constellation Energy?

Most people are given support to advance their career here.
In the last year, 80% of people report being given support to advance their career here.
Based on data from 45 people who took the Breakroom Quiz between May 2025 and May 2026.

Do people think Constellation Energy’s headquarters understands what’s happening where they work?

Most people think headquarters doesn’t understand what’s happening where they work.
72% of people think that this employer’s headquarters or owners don’t have a good understanding of what’s really happening where they work.
Based on data from 43 people who took the Breakroom Quiz between May 2025 and May 2026.

Do workers feel well informed about how Constellation Energy is doing?

Most people feel well informed about how the company is doing.
76% of people feel that they are kept well informed about how the company is doing as a whole.
Based on data from 45 people who took the Breakroom Quiz between May 2025 and May 2026.
What other companies are hiring for Senior Software Developer jobs?
What are the most popular jobs at Constellation?
Simulator Software Engineer

Simulator Software Engineer

Constellation Energy

Lake Fork, IL • On-site

$105.30K - $117K/yr

Other

Medical, Dental, Vision, Retirement, PTO

This job post has expired today. Applications are no longer accepted.

Constellation Energy rating

8.4

Company rating: 8.4 out of 10

Based on 96 frontline employees who took The Breakroom Quiz

12th of 74 rated oil and gas companies

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

 

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