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Senior Mechanical Engineer Jobs in Romeoville, IL

Kinectrics Inc.

Senior Mechanical Engineer

Naperville, IL · On-site

$90 - $130/hr

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

Legence

Senior Mechanical Engineer

Chicago, IL · On-site

$107K - $142K/yr

CMTA is seeking a Senior Mechanical Engineer with 7+ years of experience in consulting engineering. In this role, you will collaborate with a team of engineers to design energy-efficient mechanical ...

C M T A Inc

Senior Mechanical Engineer

Chicago, IL · On-site

$80 - $110/hr

Position Overview CMTA is seeking a Senior Mechanical Engineer with 7+ years of experience in consulting engineering. In this role, you will collaborate with a team of engineers to design energy ...

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All JobsMechanical Engineer JobsSenior Mechanical Engineer JobsSenior Mechanical Engineer Jobs in Romeoville, IL

Senior Mechanical Engineer information

See Romeoville, IL salary details

$76K

$125K

$174.4K

How much do senior mechanical engineer jobs pay per year?

As of Sep 4, 2026, the average yearly pay for senior mechanical engineer in Romeoville, IL is $124,967.00, according to ZipRecruiter salary data. Most workers in this role earn between $106,500.00 and $140,700.00 per year, depending on experience, location, and employer.

What does a senior mechanical engineer do?

A senior mechanical engineer manages the research and manufacturing of mechanical devices and systems. Day to day responsibilities of a senior mechanical engineer include estimating manufacturing project costs and timelines, making recommendations on system efficiencies and safety, and performing general engineering duties such as the development and testing of machines. A senior mechanical engineer job is a leadership position and requires managerial experience and excellent communication skills.

What does a senior mechanical engineer do?

A Senior Mechanical Engineer is responsible for designing, developing, and overseeing the production of mechanical systems and devices. They lead engineering projects, solve complex technical problems, and may supervise junior engineers and other team members. Their work often involves using advanced software tools for modeling and analysis, ensuring compliance with industry standards, and communicating with clients and stakeholders. Senior Mechanical Engineers typically have several years of experience and play a key role in project planning and execution.

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

To thrive as a Senior Mechanical Engineer, you need a strong background in mechanical design, engineering analysis, and project management, usually supported by a bachelor's or master's degree in mechanical engineering and several years of industry experience. Proficiency with CAD software (such as SolidWorks or AutoCAD), FEA tools, and familiarity with relevant industry standards and certifications (like PE licensure) are typically required. Excellent problem-solving, leadership, and communication skills help you lead teams and collaborate effectively with cross-functional departments. These skills and qualifications are crucial for delivering innovative, reliable engineering solutions and successfully managing complex projects.

How does a senior mechanical engineer typically collaborate with cross-functional teams during a project?

As a Senior Mechanical Engineer, you’ll regularly work alongside professionals from disciplines such as electrical engineering, manufacturing, project management, and quality assurance. Effective collaboration involves participating in design reviews, aligning on technical requirements, and troubleshooting challenges that arise during development. You’ll often serve as a key technical liaison, ensuring that mechanical solutions integrate seamlessly with other systems and that project milestones are met on schedule. Strong communication and leadership skills are invaluable, as you’ll help guide both junior engineers and multidisciplinary teams toward shared goals.

What is the difference between Senior Mechanical Engineer vs Mechanical Designer?

AspectSenior Mechanical EngineerMechanical Designer
Required CredentialsBachelor's or Master's in Mechanical Engineering, Professional Engineer (PE) license often preferredAssociate's or Bachelor's in Mechanical Engineering or related field, certifications vary
Work EnvironmentDesign, analysis, project management, often in engineering firms or manufacturingDrafting, CAD modeling, product development, typically in design departments
Employer & Industry UsageEngineering firms, manufacturing, aerospace, automotiveProduct design companies, manufacturing, engineering consultancies

While both roles involve mechanical design, Senior Mechanical Engineers focus on project oversight, analysis, and technical leadership, whereas Mechanical Designers primarily handle CAD modeling and drafting tasks. The senior role requires more advanced credentials and experience, often with broader responsibilities in project management and engineering decisions.

How much do senior mechanical engineers get paid?

Senior mechanical engineers typically earn a median annual salary ranging from $85,000 to $130,000, depending on experience, location, and industry. They often have specialized skills in CAD software, project management, and engineering design, which can influence compensation levels.
More about Senior Mechanical Engineer jobs

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

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

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

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Senior Mechanical Engineer jobs near you
Infographic showing various Senior Mechanical Engineer job openings in Romeoville, IL as of August 2026, with employment types broken down into 84% Full Time, 12% Part Time, 1% Temporary, 2% Contract, and 1% Nights. Highlights an 97% Physical, 1% Hybrid, and 2% Remote job distribution, with an average salary of $124,967 per year, or $60.1 per hour.

Senior Mechanical Engineer

Kinectrics Inc.

Naperville, IL • On-site

$90 - $130/hr

Other

Medical, Dental, Vision, Life, Retirement, PTO

Re-posted yesterday

Job description

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Location: Any (preference Naperville, IL/Atlanta, GA/Ridgeland, MS)

Senior Mechanical Design Engineer – Nuclear Projects

Are you a seasoned engineer ready to take on complex challenges and lead innovative projects in the energy sector? We are looking for a Senior Engineer to join our team of experts working on critical modifications to nuclear power generation facilities and plant mechanical system designs for leading energy providers. This role offers you the opportunity to make an immediate impact by applying your technical mastery and collaborating with top-tier engineers across disciplines.

As a Senior Engineer, you will:

  • Design and modify key components, ensuring they meet rigorous specifications.
  • Lead technical reviews of calculations and design deliverables, while offering guidance and support and mentoring to junior engineers.
  • Work directly with customers to define design inputs, solve engineering challenges, and ensure project success.
  • Take on technical leadership roles in small to mid-sized projects, using your specialized expertise to deliver results that shape the future of power generation.

This position allows you to make strategic decisions that directly impact the technical, operational, and financial success of projects, all while fostering collaboration and innovation across teams. You’ll have the chance to work autonomously, applying your mature professional judgment to identify solutions and drive projects to completion.

If you hold a BS in Mechanical Engineering, have at least 7 years of relevant experience, and are ready to take the lead on groundbreaking projects, this is the perfect role for you. A Professional Engineering License is preferred but not required, and strong communication skills are essential as you collaborate with colleagues and clients alike.

Join us in driving the future of energy and power generation through expert engineering solutions.

In order to succeed in this position, qualified candidates will have the following:
  • BS in Mechanical Engineering degree from ABET accredited program.
  • Minimum of 7 years progressively more responsible commercial nuclear experience.
  • Effective written and verbal communication with clients, colleagues, and colleagues within other disciplines, project managers, and management.
  • Working knowledge of codes, standards, and regulations that apply to mechanical engineering design of nuclear power plants.
  • Possesses a technical mastery of engineering principles.
  • Demonstrates ability to perform review of complex calculations and design deliverables.
  • Professional Engineering License preferred, but not required.
  • Candidates must be legally authorized to work permanently in the U.S. (i.e. without the need for work sponsorship now or in the future)
About Us

Kinectrics AES, Inc. is the U.S. division of Kinectrics, Inc., a leading provider of innovative life cycle management solutions for the global electricity industry. Kinectrics is known worldwide for the technical excellence of its’ employees, challenging work, opportunity for career growth, and flexible working conditions.

Kinectrics AES provides comprehensive engineering, design, analysis and consulting for the energy sector. Our employees work with customers to solve their most difficult technical challenges in an entrepreneurial business environment, where careers can develop along both technical and managerial paths.

Why Work For Us?

Kinectrics AES, Inc. offers a comprehensive benefits plan which includes medical, dental, vision, life insurances, generous PTO and a 5% match on our 401k plan. Flexible WFH/Office Hybrid work schedule available.

Employee surveys consistently rank Kinectrics as “a great place to work”. Although this phrase may mean different things to different people, Kinectrics is widely recognized as a company that employs some of the best and brightest minds in the energy and utility industry. Learn more at kinectrics.com

Join us in driving innovation in engineering in the nuclear industry and make a lasting impact on the future of clean energy. Apply today!

Kinectrics AES is an equal opportunity employer. All qualified applicants will receive consideration for employment and will not be discriminated against based on their race, gender, sexual orientation, gender identity, religion, national origin, age, disability, veteran status, or other protected classification.

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