1

Mechanical Engineer Jobs in Romeoville, IL (NOW HIRING)

Mechanical Engineer

Minooka, IL · On-site

$122K - $154K/yr

The Mechanical Engineer position is based out of our LaSalle County Generating Station in Marseilles, IL. Our culture and employee experience make it clear: We are powered by passion and purpose.

Mechanical Engineer

Morris, IL · On-site

$122K - $154K/yr

The Mechanical Engineer position is based out of our LaSalle County Generating Station in Marseilles, IL. Our culture and employee experience make it clear: We are powered by passion and purpose.

Mechanical Engineer

Burr Ridge, IL · On-site

$81K - $112K/yr

Mechanical Engineer Burr Ridge, IL, United States req25360 What you will enjoy doing* * In this role you will support and lead the design, development, commercialization, and global migration of gas ...

Senior Mechanical Engineer

Naperville, IL · On-site

$104K - $137K/yr

Senior Mechanical Engineer Location: Any (preference Naperville, IL/Atlanta, GA/Ridgeland, MS) Senior Mechanical Design Engineer - Nuclear Projects Are you a seasoned engineer ready to take on ...

Mechanical Engineer

Minooka, IL · On-site

$87K - $154K/yr

The Mechanical Engineer position is based out of our LaSalle County Generating Station in Marseilles, IL. Our culture and employee experience make it clear: We are powered by passion and purpose.

Mechanical Engineer

Morris, IL · On-site

$87K - $154K/yr

The Mechanical Engineer position is based out of our LaSalle County Generating Station in Marseilles, IL. Our culture and employee experience make it clear: We are powered by passion and purpose.

Mechanical Engineer

Newark, IL · On-site

$122K - $154K/yr

The Mechanical Engineer position is based out of our LaSalle County Generating Station in Marseilles, IL. Our culture and employee experience make it clear: We are powered by passion and purpose.

Mechanical Engineer

Minooka, IL · On-site

$122K - $154K/yr

The Mechanical Engineer position is based out of our LaSalle County Generating Station in Marseilles, IL. Our culture and employee experience make it clear: We are powered by passion and purpose.

Mechanical Engineer

Newark, IL · On-site

$122K - $154K/yr

The Mechanical Engineer position is based out of our LaSalle County Generating Station in Marseilles, IL. Our culture and employee experience make it clear: We are powered by passion and purpose.

Mechanical Engineer

Newark, IL · On-site

$87K - $154K/yr

The Mechanical Engineer position is based out of our LaSalle County Generating Station in Marseilles, IL. Our culture and employee experience make it clear: We are powered by passion and purpose.

Mechanical Engineer

Morris, IL · On-site

$122K - $154K/yr

The Mechanical Engineer position is based out of our LaSalle County Generating Station in Marseilles, IL. Our culture and employee experience make it clear: We are powered by passion and purpose.

As a Mechanical Engineer II, you'll manage projects from customer needs through design, testing, and installation. You'll research, design, develop, and test complex equipment and machinery while ...

Sr. Mechanical Engineer

Chicago, IL · On-site

$107K - $142K/yr

Job Location(s) Chicago, IL (near Midway Airport) Summary The Mechanical Engineer designs mechanical components and assemblies in a cost effective manner that meets customer specifications and ...

Sr. Mechanical Engineer

Chicago, IL · On-site

$107K - $142K/yr

Job Location(s) Chicago, IL (near Midway Airport) Summary The Mechanical Engineer designs mechanical components and assemblies in a cost effective manner that meets customer specifications and ...

Showing results 41-60

Mechanical Engineer information

See Romeoville, IL salary details

$46.4K

$104.9K

$169.8K

How much do mechanical engineer jobs pay per year?

As of Sep 12, 2026, the average yearly pay for mechanical engineer in Romeoville, IL is $104,895.00, according to ZipRecruiter salary data. Most workers in this role earn between $83,100.00 and $129,000.00 per year, depending on experience, location, and employer.

What does a mechanical engineer do?

A Mechanical Engineer designs, develops, builds, and tests mechanical devices such as engines, machines, and tools. They use principles of physics and mathematics to solve engineering problems and improve existing products. Mechanical Engineers can work in a variety of industries, including automotive, aerospace, manufacturing, and energy. Their responsibilities often include creating blueprints, analyzing data, and collaborating with other engineers or professionals to ensure projects meet safety and quality standards.

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

To thrive as a Mechanical Engineer, you need a solid background in mechanical design, mathematics, and physics, typically supported by a bachelor's degree in mechanical engineering or a related field. Proficiency in CAD software (such as SolidWorks or AutoCAD), finite element analysis tools, and familiarity with industry standards or relevant certifications (like a Professional Engineer license) are common requirements. Strong problem-solving abilities, teamwork, and effective communication skills help professionals excel in collaborative and multidisciplinary environments. These skills are crucial for ensuring safe, innovative, and efficient engineering solutions that meet project and client needs.

What are common interdisciplinary collaborations for mechanical engineers in a typical project setting?

Mechanical Engineers often work closely with professionals from other disciplines such as electrical engineers, software developers, and industrial designers, especially when developing complex products or machinery. Collaboration is essential for integrating mechanical systems with electronics and software, ensuring functionality, safety, and efficiency. These interactions usually involve regular team meetings, joint problem-solving sessions, and coordinated testing to achieve project goals. Being comfortable working in cross-functional teams can significantly enhance your success and contribute to innovative solutions.

What is the difference between Mechanical Engineer vs Mechanical Designer?

AspectMechanical EngineerMechanical Designer
Required CredentialsBachelor's degree in Mechanical Engineering, PE license (optional)Bachelor's degree in Mechanical Design, CAD certifications (often)
Work EnvironmentDesign, analysis, testing, project managementCreating detailed CAD models, drafting, and design documentation
Industry UsageEngineering firms, manufacturing, aerospace, automotiveProduct design, manufacturing, industrial equipment

Mechanical Engineers focus on designing, analyzing, and testing mechanical systems, often overseeing projects from conception to completion. Mechanical Designers primarily create detailed CAD models and drawings based on specifications. While both roles require technical skills and knowledge of mechanical systems, Mechanical Engineers typically have broader responsibilities including analysis and project management, whereas Mechanical Designers specialize in detailed design work.

What type of jobs do mechanical engineers do?

Mechanical engineers design, develop, and test mechanical devices and systems such as engines, HVAC systems, manufacturing equipment, and robotics. They often work in industries like aerospace, automotive, energy, and manufacturing, utilizing skills in CAD software, thermodynamics, and materials science. Their roles may involve research, project management, and ensuring safety and efficiency standards are met.

What are the most commonly searched types of Mechanical Engineer jobs in Romeoville, IL?

The most popular types of Mechanical Engineer jobs in Romeoville, IL are:

What are popular job titles related to Mechanical Engineer jobs in Romeoville, IL?

For Mechanical Engineer jobs in Romeoville, IL, the most frequently searched job titles are:

What job categories do people searching Mechanical Engineer jobs in Romeoville, IL look for?

The top searched job categories for Mechanical Engineer jobs in Romeoville, IL are:

What cities near Romeoville, IL are hiring for Mechanical Engineer jobs?

Cities near Romeoville, IL with the most Mechanical Engineer job openings:

Infographic showing various Mechanical Engineer job openings in Romeoville, IL as of August 2026, with employment types broken down into 85% Full Time, 10% Part Time, 3% Contract, and 2% Nights. Highlights an 93% Physical, 1% Hybrid, and 6% Remote job distribution, with an average salary of $104,895 per year, or $50.4 per hour.

Mechanical Engineer

Minooka, IL • On-site

Constellation Energy
Clean Energy Equipment Manufacturing • 10K+ employees

$122K - $154K/yr

Other

Medical, Dental, Vision, Life, Retirement, PTO

Posted 10 days ago


Constellation Energy rating

8.6

Company rating: 8.6 out of 10

Based on 101 frontline employees who took The Breakroom Quiz


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.

The Mechanical Engineer position is based out of our LaSalle County Generating Station in Marseilles, IL.
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.

*****************This Engineering role can be filled at Entry-level, 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 while acting as a resource and technical expert to engineers. 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 and as a subject matter expert when consulted to identify and resolve equipment and system problems
  • Directly fulfill engineering and technical leadership accountability regarding short-term and long-term programs that impact site operations
  • 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.
  • Recommends 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 for Entry Level E01 Engineer &ndash New Graduate 

  • B.S  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

  • B.S. in Engineering, a minimum 2 years 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 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

  • B.S. in Engineering, a minimum 5 years 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 requirements or unescorted access requirements, as applicable, and favorable medical examination and/or testing in accordance with position duties

Preferred Qualifications

  • Professional Engineer Registration
  • Advanced technical degree or related coursework

What Constellation Energy employees say

Pay

Benefits

Hours and flexibility

Workplace

Get the full story on Breakroom