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Engineer, Mechanical / Civil

Constellation

Clinton, ILJob$87–154K/yrSeen 1w agoSeen in employer's feed today

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At a glance

Compensation
$87–154K/yr
Location
Clinton, IL
Work Authorization
Not specified

Olive lists jobs from US employers, including remote roles you can work from the United States.

Job overview

Constellation seeks an Engineer, Mechanical / Civil to support nuclear plant operations through advanced technical problem-solving and engineering analysis. The role develops and manages engineering activities, resolves equipment and system problems, and supports technical projects and programs. It may be filled at entry, mid-level, or senior level, with qualifications varying by level. The posting lists annual salary ranges by level and describes a comprehensive benefits package.

Skills & qualifications

RequiredNice to have

Skills

Engineering AnalysisProblem SolvingEquipment TroubleshootingTask ManagementConfiguration ManagementEngineering ResearchEngineering StudiesEngineering ReviewsEngineering PrinciplesIndustry CodesNuclear Plant OperationsEngineering TechniquesFundamental Group Functions

Qualifications

Bachelor's in EngineeringNuclear or Related Engineering ExperienceANSI/ANS-3.1-2014 StandardEngineer in Training CertificationMinimum Access RequirementsFavorable Medical Examination

Benefits

401(k) Match
Medical Insurance
Dental Insurance
Vision Insurance
Paid Time Off

Full 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.

Degreed Engineers

This Engineering role can be filled at the Entry, Mid-level or Senior Engineer level. Please see minimum qualifications list below for each level

  • Entry Level - $87,000

  • Mid-Level - $92,700-114,000

  • Sr Level - $122,400-154,000

Ranges are per year based on experience, along with a comprehensive benefits package that includes bonus and 401K

Primary Purpose of Position

Performs advanced technical/engineering problem solving in support of nuclear plant operations. Responsible for technical decisions. Possesses excellent knowledge in functional discipline and its practical application and has detailed knowledge of applicable industry codes and regulations.

Primary Duties and Accountabilities

  • Provide in-depth technical expertise to develop, manage and implement engineering analysis, activities and programs.

  • Provide technical expertise and consultation through direct involvement to identify and resolve equipment and system problems.

  • Provide complete task management of engineering issues.

  • Perform engineering tasks as assigned by supervision applying engineering principles.

  • Accountable for the accuracy, completeness, and timeliness of work ensuring proper configuration management and assuring that standard design criteria, practices, procedures and codes are used in preparation of plans and specifications.

  • Perform independent research, reviews, studies, and analyses in support of technical projects and programs.

  • Recommend equipment, new concepts and techniques to improve performance, simplify construction, reduce costs, correct design or material flaws, or comply with changes in codes or regulations.

  • 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

MINIMUM QUALIFICATIONS for Entry Level E01 Engineer – New Graduate

  • Bachelor’s degree in Engineering (Chemical, Civil/Structural, Electrical, Industrial, Mechanical or Nuclear)

  • Maintain minimum access requirements or unescorted access requirements, as applicable, and favorable medical examination and/or testing in accordance with position duties

MINIMUM QUALIFICATIONS for Mid-level E02 Engineer

  • Bachelor’s degree in Engineering (chemical, civil/structural, electrical, industrial, mechanical or nuclear) with 2 years of nuclear or related engineering experience

  • Maintain minimum access requirements or unescorted access requirements, as applicable, and favorable medical examination and/or testing in accordance with position duties

MINIMUM QUALIFICATIONS for Senior E03 Engineer

  • Bachelor’s degree in Engineering (Chemical, Civil/Structural, Electrical, Industrial, Mechanical or Nuclear) with 5 years of nuclear experience or related engineering experience

  • Must meet additional requirements as outlined in ANSI/ANS-3.1-2014 Standard, "Selection, Qualification, and Training of Personnel for Nuclear Power Plants"

  • Maintain minimum access requirement or unescorted access requirements, as applicable, and favorable medical examination and/or testing in accordance with position duties

Preferred Qualifications

  • Engineer in training certification

  • Good grasp of techniques and a good understanding of the fundamental functions performed by the group

Constellation is proud to be an equal opportunity employer and employees or applicants will receive consideration for employment without regard to: age, color, disability, gender, national origin, race, religion, sexual orientation, gender identity, protected veteran status, or any other classification protected by federal, state, or local law.

How this job compares

Set against the 7,584 open Mechanical Engineer jobs on Olive Jobs, counted November 3, 2026.

Pay
  • This posting$87–154K/yr
  • Illinois median$99–154K/yr170 salary ranges
  • US median$105–160K/yr4,522 salary ranges

This range's midpoint, $121K, is 4% below the Illinois median midpoint ($126K) — in the middle half of Mechanical Engineer salary ranges in Illinois.

Openings
Olive Jobs lists 203 open Mechanical Engineer jobs in Illinois and 7,584 across the US. 2% of them nationwide are listed as remote or flexible.
Hiring the most in Illinois
Experience
This posting asks for at least 2 years of experience — less than three in four Mechanical Engineer postings that state a minimum ask for (median 5 years, across 6,298 postings).
Education
5,241 of the 7,584 open Mechanical Engineer jobs (69%) ask for a bachelor's degree or higher.

Counted across the open, public US postings on Olive Jobs on November 3, 2026. Pay medians are the middle values of the low ends and of the high ends of postings that list both ends of a range in the same cadence (a yearly salary or an hourly rate); a range's midpoint is halfway between its ends. Pay and experience figures resting on fewer than 20 postings are left out.

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