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Senior Engineer Jobs in Decatur, IL (NOW HIRING)

Constellation Energy

Senior Reactor Operator

Cisco, IL · On-site

$159K - $191K/yr

Constellation is seeking Initial License Trainees (ILT) to become a licensed Senior Reactor ... Degree from a 4-year program or equivalent in engineering, engineering technology, or physical ...

Constellation Energy

Senior Reactor Operator

Seymour, IL · On-site

$159K - $191K/yr

Constellation is seeking Initial License Trainees (ILT) to become a licensed Senior Reactor ... Degree from a 4-year program or equivalent in engineering, engineering technology, or physical ...

Constellation Energy

Senior Reactor Operator

Weldon, IL · On-site

$159K - $191K/yr

Constellation is seeking Initial License Trainees (ILT) to become a licensed Senior Reactor ... Degree from a 4-year program or equivalent in engineering, engineering technology, or physical ...

Constellation Energy

Senior Reactor Operator

Decatur, IL · On-site

$159K - $191K/yr

Constellation is seeking Initial License Trainees (ILT) to become a licensed Senior Reactor ... Degree from a 4-year program or equivalent in engineering, engineering technology, or physical ...

Constellation Energy

Senior Reactor Operator

Elwin, IL · On-site

$159K - $191K/yr

Constellation is seeking Initial License Trainees (ILT) to become a licensed Senior Reactor ... Degree from a 4-year program or equivalent in engineering, engineering technology, or physical ...

Constellation Energy

Senior Reactor Operator

Lincoln, IL · On-site

$159K - $191K/yr

Constellation is seeking Initial License Trainees (ILT) to become a licensed Senior Reactor ... Degree from a 4-year program or equivalent in engineering, engineering technology, or physical ...

Constellation Energy

Senior Reactor Operator

Cornland, IL · On-site

$159K - $191K/yr

Constellation is seeking Initial License Trainees (ILT) to become a licensed Senior Reactor ... Degree from a 4-year program or equivalent in engineering, engineering technology, or physical ...

Constellation Energy

Senior Reactor Operator

Niantic, IL · On-site

$159K - $191K/yr

Constellation is seeking Initial License Trainees (ILT) to become a licensed Senior Reactor ... Degree from a 4-year program or equivalent in engineering, engineering technology, or physical ...

Constellation Energy

Senior Reactor Operator

Kenney, IL · On-site

$159K - $191K/yr

Constellation is seeking Initial License Trainees (ILT) to become a licensed Senior Reactor ... Degree from a 4-year program or equivalent in engineering, engineering technology, or physical ...

Constellation Energy

Senior Reactor Operator

Hammond, IL · On-site

$159K - $191K/yr

Constellation is seeking Initial License Trainees (ILT) to become a licensed Senior Reactor ... Degree from a 4-year program or equivalent in engineering, engineering technology, or physical ...

Constellation Energy

Senior Reactor Operator

Boody, IL · On-site

$159K - $191K/yr

Constellation is seeking Initial License Trainees (ILT) to become a licensed Senior Reactor ... Degree from a 4-year program or equivalent in engineering, engineering technology, or physical ...

Constellation Energy

Senior Reactor Operator

Sullivan, IL · On-site

$159K - $191K/yr

Constellation is seeking Initial License Trainees (ILT) to become a licensed Senior Reactor ... Degree from a 4-year program or equivalent in engineering, engineering technology, or physical ...

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All JobsEngineer JobsSenior Engineer JobsSenior Engineer Jobs in Decatur, IL

Senior Engineer information

See Decatur, IL salary details

$57.7K

$122.8K

$178K

How much do senior engineer jobs pay per year?

As of Jul 17, 2026, the average yearly pay for senior engineer in Decatur, IL is $122,756.00, according to ZipRecruiter salary data. Most workers in this role earn between $101,400.00 and $139,200.00 per year, depending on experience, location, and employer.

How does a Senior Engineer typically mentor junior team members, and what impact does this have on the team's success?

Senior Engineers often play a key role in mentoring junior developers by providing guidance on technical challenges, reviewing code, and sharing best practices. This mentorship helps foster a collaborative environment where less-experienced team members can develop their skills more rapidly. As a result, the entire team benefits from improved code quality, faster problem-solving, and a culture of continuous learning. Senior Engineers also help set standards and encourage professional growth, which contributes to the overall success and cohesion of the engineering team.

What does a senior engineer do?

A senior engineer designs, develops, and tests complex systems or products within their technical field, often leading projects and mentoring junior staff. They utilize advanced technical skills, problem-solving abilities, and may hold certifications relevant to their industry. Their role involves ensuring quality, efficiency, and adherence to project deadlines in a collaborative environment.

What engineers make $200,000 a year?

Senior engineers in fields such as software, petroleum, aerospace, and electrical engineering can earn $200,000 or more annually, especially with extensive experience, advanced skills, and in high-demand industries. Compensation often includes bonuses, stock options, or other incentives, and may require specialized certifications or advanced degrees.

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

To thrive as a Senior Engineer, you need advanced technical expertise in your engineering discipline, a relevant degree, and several years of industry experience. Familiarity with project management software, CAD tools, and compliance with engineering standards or certifications like PE (Professional Engineer) is typically required. Critical thinking, leadership, and effective communication are essential soft skills for mentoring teams and managing complex projects. These skills and qualities ensure successful project delivery, innovation, and strong team performance within engineering environments.

What Is a Senior Engineer?

Senior engineers develop and design software programs and applications, but are designated senior because they have more extensive knowledge and years of experience than other engineers on their team. As a senior engineer, you work closely with company managers to ensure the software is created to the required specifications and must troubleshoot issues with applications when they arise. Most senior engineers have mastered a specific set of programming languages, databases, and operating systems.

What is the difference between Senior Engineer vs Mechanical Engineer?

AspectSenior EngineerMechanical Engineer
Required CredentialsBachelor's degree in engineering; often a master's; professional engineering license (PE) preferredBachelor's degree in mechanical engineering; PE license optional but advantageous
Work EnvironmentDesign, development, project management; leadership rolesDesign, analysis, testing, manufacturing
Industry UsageUsed across engineering sectors for experienced professionalsEntry to mid-level engineering roles in manufacturing, automotive, aerospace

Senior Engineers typically have more experience, leadership responsibilities, and advanced credentials compared to Mechanical Engineers. While Mechanical Engineers focus on design and analysis, Senior Engineers often oversee projects and mentor teams, making them suitable for higher-level roles within engineering teams.

What engineers make $500,000?

Senior engineers in fields such as software, electrical, and aerospace engineering can earn $500,000 or more annually, especially with extensive experience, specialized skills, and leadership roles. High compensation often includes bonuses, stock options, or profit sharing, particularly in technology companies or industries with high demand for technical expertise.

What is a Senior Engineer?

A Senior Engineer is an experienced professional responsible for designing, developing, and overseeing complex engineering projects. They often lead teams, mentor junior engineers, and ensure that technical solutions meet organizational goals and industry standards. Senior Engineers are typically experts in their field, possessing advanced problem-solving skills and a deep understanding of relevant technologies and methodologies. Their role also often involves collaborating across departments, managing timelines, and contributing to strategic planning.

Can you make $250,000 as an engineer?

Senior engineers in high-demand industries such as software, aerospace, or petroleum can earn $250,000 or more annually, especially with extensive experience, advanced skills, and leadership roles. Compensation varies based on location, company size, and specialization, with some engineers earning bonuses and stock options that contribute to total earnings.
More about Senior Engineer jobs
What are the most commonly searched types of Engineer jobs in Decatur, IL? The most popular types of Engineer jobs in Decatur, IL are:
What cities near Decatur, IL are hiring for Senior Engineer jobs? Cities near Decatur, IL with the most Senior Engineer job openings:
Senior Engineer jobs near you
Senior Reactor Operator

Senior Reactor Operator

Constellation Energy

White Heath, IL • On-site

$159K - $191K/yr

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Re-posted 16 days ago

Constellation Energy rating

8.5

Company rating: 8.5 out of 10

Based on 100 frontline employees who took The Breakroom Quiz

10th of 75 rated oil and gas companies

Job description

Who We Are

As the largest private-sector power producer in the world and the nation's largest producer of clean and reliable energy, Constellation is focused on our purpose: lighting the way to a brilliant tomorrow for all. 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. Now integrated with Calpine, our portfolio includes 55 gigawatts of capacity from nuclear, natural gas, geothermal, hydro, wind and solar facilities, with the generating capacity to power the equivalent of 27 million homes.
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. Join us in meeting the country's energy needs today and tomorrow.

Total Rewards

Constellation offers an extensive selection of benefits and rewards to help our employees thrive professionally and personally. We provide competitive compensation and a wide-range of benefits that support both employees and their families, helping them prepare for the future. In addition to highly competitive salaries, eligible employees are offered a bonus program, 401(k) with company match, employee stock purchase program comprehensive medical, dental and vision benefits, including robust wellbeing programs disability and life insurance benefits paid time off for vacation, holidays, and sick days and much more.

  • During initial license training, Total compensation earnings eligibility ranging from $159,000.00 to $182,000.00 per year (depending on experience and past license status) including a 15% annual incentive bonus, an initial sign-on bonus, $10,000 bonus spread through training milestones, a comprehensive benefits package, and a 401k with employer matching on contributions.
  • After obtaining SRO license, Total compensation earnings eligibility from $191,000.00 per year, including a target 15% annual bonus, License Premium, as well as, extended hours pay at 1.5 times the base salary (expressed on hourly basis) involving mandated operation shift coverage. 

Relocation Assistance: Relocation assistance may be offered to those who meet the conditions in the Company&rsquos policy.

Constellation is seeking Initial License Trainees (ILT) to become a licensed Senior Reactor Operator (SRO) supporting Clinton Nuclear Power Sation in Clinton, IL.

Primary Purpose of Position

The primary purpose of this position is to train and prepare to perform the duties of an Operations Shift Supervisor who holds a Senior Reactor Operator (SRO)License. Upon completion of training the candidate will be fully licensed by the Nuclear Regulatory Commission (NRC) to supervise the licensed activities of licensed reactor operators in the reactor control room. They will also be trained to directly supervise bargaining unit reactor operators and equipment operators generally.

Primary Duties and Accountabilities

  • Attend Initial License Training (ILT) which includes classroom training and examination, along with on-the-job training and evaluation.
  • Successfully complete all phases of training to obtain an SRO license in order to perform the duties of an Operations Shift Supervisor.
  • 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.

Minimum Qualifications

  • High school diploma/GED
  • Meet or exceed one of the following:
    • 1 year Reactor Operator license at a comparable facility or 1.5 years at a noncomparable facility. Comparable is PWR to PWR or BWR to BWR and noncomparable is PWR to BWR or BWR to PWR.
    • 1.5 years or more in a position equivalent to Reactor Operator (or Supervisor) at a military reactor (i.e., Power Plant Watch Engineer, Engineering Watch Supervisor, Reactor Operator, Engineering Officer of the Watch, Propulsion Plant Watch Supervisor). Must have 1.5 years after qualification.
    • Degree from a 4-year program or equivalent in engineering, engineering technology, or physical sciences, or professional engineer license, and more than 1.5 years as a qualified non-licensed operator or Staff member, Supervisor or Manager in work control, operations, engineering, outage management, maintenance, radiation protection, chemistry, or accredited training at a comparable (BWR or PWR) facility. Managerial, staff engineer, or supervisor experience at a noncomparable plant may be credited on a 1.5:1.0 basis (i.e., over 2.25 years required for noncomparable facility), and 3 years required for a nontraditional degree.
    • Current or previous SRO Instructor certification and 4 years experience at a comparable facility or 6 years experience at a non-comparable facility.
  • Maintain minimum access or unescorted access requirements, as applicable, and favorable medical examination and/or testing in accordance with position duties

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