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Mechanical Systems Engineer Jobs (NOW HIRING)

The Mechanical Systems Engineer I supports the design, build, testing, and improvement of mechanical systems for Electra's processing, material handling, and pilot or plant infrastructure. This is an ...

The Mechanical Systems Engineer I supports the design, build, testing, and improvement of mechanical systems for Electra's processing, material handling, and pilot or plant infrastructure. This is an ...

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Mechanical Systems Engineer information

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$63.5K

$110.3K

$152K

How much do mechanical systems engineer jobs pay per year?

As of Jul 21, 2026, the average yearly pay for mechanical systems engineer in the United States is $110,305.00, according to ZipRecruiter salary data. Most workers in this role earn between $81,500.00 and $131,500.00 per year, depending on experience, location, and employer.

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

To thrive as a Mechanical Systems Engineer, you need strong analytical skills, a solid understanding of engineering principles, and a bachelor’s degree in mechanical engineering or a related field. Familiarity with CAD software (like SolidWorks or AutoCAD), simulation tools, and relevant certifications such as a Professional Engineer (PE) license are typically essential. Effective problem-solving, teamwork, and communication skills help you collaborate with multidisciplinary teams and manage complex projects. These skills ensure the design, implementation, and maintenance of efficient mechanical systems that meet technical and safety standards.

What engineers make $500,000?

Senior mechanical systems engineers with extensive experience, advanced skills in design and analysis, and leadership roles can earn salaries approaching or exceeding $500,000 annually, especially in high-cost-of-living areas or within specialized industries like aerospace or energy. Achieving this level often requires advanced degrees, certifications, and a track record of significant project contributions.

What engineers make $300,000 a year?

Senior mechanical systems engineers with extensive experience, advanced skills in design and analysis, and often working in specialized industries such as aerospace, defense, or energy can earn $300,000 or more annually. Achieving this level typically requires advanced degrees, professional certifications, and leadership responsibilities.

What do mechanical systems engineers do?

Mechanical systems engineers design, analyze, and optimize mechanical components and systems used in various industries such as manufacturing, aerospace, and automotive. They work with tools like CAD software, perform simulations, and ensure systems meet safety and performance standards. Their responsibilities often include troubleshooting, testing, and collaborating with multidisciplinary teams to develop efficient and reliable mechanical solutions.

Can you make $200,000 a year as a mechanical engineer?

Earning $200,000 annually as a mechanical systems engineer is possible but typically requires extensive experience, advanced skills, and working in high-paying industries such as aerospace or energy. Most mechanical engineers earn between $70,000 and $120,000, with top earners in senior or specialized roles reaching higher salaries. Certifications like Professional Engineer (PE) and expertise in CAD, FEA, or project management can also influence earning potential.

What are common challenges faced by Mechanical Systems Engineers when working on interdisciplinary projects?

Mechanical Systems Engineers often collaborate with electrical, software, and civil engineering teams on complex projects. One common challenge is ensuring seamless integration between mechanical components and other system elements, which requires strong communication and coordination skills. Additionally, managing conflicting requirements and timelines between disciplines can be demanding, so flexibility and problem-solving abilities are crucial. Embracing cross-functional teamwork and staying adaptable helps Mechanical Systems Engineers navigate these challenges effectively.

What does a Mechanical Systems Engineer do?

A Mechanical Systems Engineer designs, analyzes, and maintains mechanical systems and components, such as engines, HVAC systems, or manufacturing equipment. They ensure that systems perform efficiently, safely, and reliably by applying principles of mechanics, thermodynamics, and materials science. Their work often involves creating technical drawings, conducting simulations, selecting materials, and collaborating with other engineers and stakeholders. Mechanical Systems Engineers play a key role in troubleshooting issues, improving existing designs, and overseeing the installation and testing of mechanical systems.

What is the difference between Mechanical Systems Engineer vs Mechanical Design Engineer?

AspectMechanical Systems EngineerMechanical Design Engineer
Primary FocusIntegrating and optimizing entire mechanical systems, including components and subsystemsCreating detailed mechanical component and product designs
Work EnvironmentSystems integration, testing, and validation in manufacturing or engineering firmsDesign studios, CAD modeling, and prototype development
Required CredentialsBachelor's in Mechanical Engineering; often certifications in systems engineeringBachelor's in Mechanical Engineering; proficiency in CAD software

Mechanical Systems Engineers focus on the overall integration and performance of mechanical systems, while Mechanical Design Engineers concentrate on developing specific components and parts. Both roles require a strong engineering background and often overlap in skills, but their core responsibilities differ in scope and application.

More about Mechanical Systems Engineer jobs
What cities are hiring for Mechanical Systems Engineer jobs? Cities with the most Mechanical Systems Engineer job openings:
What are the most commonly searched types of Mechanical Systems Engineer jobs? The most popular types of Mechanical Systems Engineer jobs are:
Who are the top companies hiring for Mechanical Systems Engineer jobs? The top employers for Mechanical Systems Engineer jobs are:
What states have the most Mechanical Systems Engineer jobs? States with the most job openings for Mechanical Systems Engineer jobs include:
Infographic showing various Mechanical Systems Engineer job openings in the United States as of July 2026, with employment types broken down into 95% Full Time, 2% Part Time, and 3% Contract. Highlights an 87% Physical, 4% Hybrid, and 9% Remote job distribution, with an average salary of $110,305 per year, or $53 per hour.
Mechanical Systems Engineer

Mechanical Systems Engineer

Constellation Energy

Baileyville, IL • On-site

$92K - $154K/yr

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

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


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.

The Mechanical Systems Engineer position is based out of our Byron Clean Energy facility in Byron, 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 Mid-level or Senior Engineer level. Please see minimum qualifications list below for each level*********************************** 

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

Responsible for performing engineering and technical tasks, under general supervision, in support of nuclear plant operations.

Primary Duties and Accountabilities

  • Perform engineering and technical tasks as assigned by supervision applying general engineering principles
  • Assure all engineering products prepared are in accordance with applicable safety analyses, industry codes, engineering specifications and all regulatory requirements.
  • Participate in the development and implementation of effective processes and techniques at appropriate levels of detail and in compliance with established policies and procedures.
  • Recommend format and methodology improvements to standard processes and procedures.
  • 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 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

  • BS Mechanical, Civil, Industrial or Chemical Engineering
  • Engineer in Training Certification
  • Good grasp of techniques and a good understanding of the fundamental functions performed by the group. As responsibility increases within the organization
  • Experience with raw water systems
  • Nuclear power plant experience

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