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Engineer In Jobs in Freeport, IL (NOW HIRING)

Mechanical Engineer

Baileyville, IL · On-site

$122K - $154K/yr

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 ...

Mechanical Engineer

Shannon, IL · On-site

$122K - $154K/yr

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 ...

Mechanical Engineer

Shannon, IL · On-site

$122K - $154K/yr

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 ...

Mechanical Engineer

Leaf River, IL · On-site

$122K - $154K/yr

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 ...

New

Mechanical Engineer

Davis Junction, IL · On-site

$122K - $154K/yr

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 ...

New

Mechanical Engineer

Mount Morris, IL · On-site

$122K - $154K/yr

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 ...

Mechanical Engineer

Polo, IL · On-site

$122K - $154K/yr

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 ...

New

Mechanical Engineer

German Valley, IL · On-site

$122K - $154K/yr

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 ...

Mechanical Engineer

Mount Morris, IL · On-site

$122K - $154K/yr

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 ...

Mechanical Engineer

Winnebago, IL · On-site

$122K - $154K/yr

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 ...

Mechanical Engineer

Polo, IL · On-site

$87K - $154K/yr

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 ...

Mechanical Engineer

Winnebago, IL · On-site

$122K - $154K/yr

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 ...

Mechanical Engineer

Winnebago, IL · On-site

$122K - $154K/yr

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 ...

New

Mechanical Engineer

Winnebago, IL · On-site

$87K - $154K/yr

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 ...

Mechanical Engineer

German Valley, IL · On-site

$87K - $154K/yr

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 ...

Mechanical Engineer

Shannon, IL · On-site

$87K - $154K/yr

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 ...

Mechanical Engineer

Seward, IL · On-site

$122K - $154K/yr

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 ...

Showing results 21-40

Engineer In information

What is an engineer in?

An Engineer In position typically refers to an entry-level or early-career engineering role, often titled 'Engineer I' or 'Engineer In Training.' Individuals in these roles work under the guidance of more experienced engineers to develop technical skills, assist with projects, and gain practical experience in their field. The role serves as a foundation for career advancement, allowing new engineers to apply theoretical knowledge, receive mentorship, and work towards professional licensure where applicable. Responsibilities may vary depending on the engineering discipline and employer.

What are the key skills and qualifications needed to thrive as an engineer in?

To thrive as an Engineer In, you need a solid background in engineering principles, problem-solving abilities, and typically a bachelor's degree in engineering or a related field. Familiarity with CAD software, engineering modeling tools, and relevant industry standards or certifications (like FE/EIT) is often required. Strong analytical thinking, teamwork, and effective communication help distinguish top performers in this role. These skills and qualifications are crucial for delivering innovative, accurate solutions and ensuring successful project outcomes.

What are 10 engineering jobs?

Engineering jobs include roles such as civil engineer, mechanical engineer, electrical engineer, software engineer, chemical engineer, aerospace engineer, industrial engineer, environmental engineer, biomedical engineer, and petroleum engineer. These positions often require specific technical skills, relevant certifications, and knowledge of industry-standard tools and software. The scope of work varies across disciplines, from designing infrastructure to developing new technologies.

What jobs can I do as an engineer?

As an engineer, you can work in various fields such as civil, mechanical, electrical, software, or chemical engineering. Common roles include design, development, testing, and maintenance of systems or products, often requiring technical skills and certifications. Engineers may work in industries like manufacturing, construction, technology, or energy, and often collaborate with multidisciplinary teams.

What kind of jobs can an engineer do?

Engineers can work in various fields such as civil, mechanical, electrical, software, and chemical engineering, designing, developing, and maintaining systems, structures, or products. They often work in offices, labs, or construction sites, using tools like CAD software and requiring relevant certifications or degrees. Their roles may include project management, research, testing, and technical problem-solving.

What cities near Freeport, IL are hiring for Engineer In jobs?

Cities near Freeport, IL with the most Engineer In job openings:

Infographic showing various Engineer In job openings in Freeport, IL as of August 2026, with employment types broken down into 92% Full Time, 5% Part Time, and 3% Contract. Highlights an 83% Physical, 5% Hybrid, and 12% Remote job distribution.

Mechanical Engineer

Constellation Energy

Baileyville, IL • On-site

$122K - $154K/yr

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

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


Constellation Energy rating

8.6

Company rating: 8.6 out of 10

Based on 101 frontline employees who took The Breakroom Quiz

12th of 87 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 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 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

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, 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.
  • All other job assignments and/or duties pursuant to company policy or as directed by management to include but not limited to: (Emergency Response duties and/or coverage, Department duty coverage and/or call out, and positions outside of department in support of outage activities etc.)

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

  • BS in Mechanical or Chemical Engineering
  • Engineer in training certification
  • Good grasp of techniques and a good understanding of the fundamental functions performed by the group

What Constellation Energy employees say

Pay

Benefits

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