1

Mid Level Software Engineer Jobs in Stockton, IL

Electrical Design Engineer

Shannon, IL · On-site

$122K - $154K/yr

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 - $89,000 Mid Level - $92,700-$114 ...

Electrical Design Engineer

Shannon, IL · On-site

$122K - $154K/yr

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 - $89,000 Mid Level - $92,700-$114 ...

Electrical Design Engineer

Shannon, IL · On-site

$122K - $154K/yr

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 - $89,000 Mid Level - $92,700-$114 ...

Electrical Design Engineer

Shannon, IL · On-site

$89K - $154K/yr

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 - $89,000 Mid Level - $92,700-$114 ...

Engineer, Snubber Program

Thomson, IL · On-site

$122K - $154K/yr

This Engineering role can be filled at the Entry, Mid-level, or Senior Engineer level. Please see minimum qualifications list below for each level*** Expected salary range: Entry-Level - $87,000 Mid ...

Engineer, Snubber Program

Thomson, IL · On-site

$122K - $154K/yr

This Engineering role can be filled at the Entry, Mid-level, or Senior Engineer level. Please see minimum qualifications list below for each level*** Expected salary range: Entry-Level - $87,000 Mid ...

Engineer, Snubber Program

Thomson, IL · On-site

$122K - $154K/yr

This Engineering role can be filled at the Entry, Mid-level, or Senior Engineer level. Please see minimum qualifications list below for each level*** Expected salary range: Entry-Level - $87,000 Mid ...

Engineer, Snubber Program

Thomson, IL · On-site

$87K - $154K/yr

This Engineering role can be filled at the Entry, Mid-level, or Senior Engineer level. Please see minimum qualifications list below for each level*** Expected salary range: Entry-Level - $87,000 Mid ...

Proficiency with pharmacy patient management systems and dispensing software.​ * Strong ... Seniority Level: Mid-Senior * Management Experience: Required​ * Security Clearance: Not required

Collaborates with Information Security Architects, Information Security Engineers, and software or ... Advanced - Demonstrates a high level of accuracy, even under pressure * Advanced - Demonstrates ...

Showing results 21-38

Mid Level Software Engineer information

See Stockton, IL salary details

$60.7K

$140.9K

$196.3K

How much do mid level software engineer jobs pay per year?

As of Sep 7, 2026, the average yearly pay for mid level software engineer in Stockton, IL is $140,905.00, according to ZipRecruiter salary data. Most workers in this role earn between $114,600.00 and $165,200.00 per year, depending on experience, location, and employer.

What is a mid level software engineer?

A Mid Level Software Engineer is a professional with a few years of experience who develops, tests, and maintains software applications. They work independently on tasks, contribute to code reviews, and collaborate with teams to design and implement solutions. Mid-level engineers are expected to write clean, efficient code, troubleshoot issues, and improve system performance. They may also mentor junior developers and participate in architectural discussions. Typically, they have strong problem-solving skills and proficiency in programming languages relevant to their role.

What typical responsibilities can I expect as a mid level software engineer?

As a Mid Level Software Engineer, you will be involved in designing, coding, testing, and maintaining software applications, often working on both new and existing projects. You’ll collaborate with other engineers, product managers, and QA teams to deliver features that meet business requirements, while also participating in code reviews and contributing to architectural decisions. Your responsibilities may also include troubleshooting bugs, refining development processes, and occasionally mentoring junior engineers. This role typically offers a blend of technical challenge, teamwork, and opportunities for continued skill development.

What are the key skills and qualifications needed to thrive in the mid level software engineer position, and why are they important?

To thrive as a Mid Level Software Engineer, you need a solid understanding of software development principles, programming languages such as Java, Python, or C#, and a bachelor’s degree in computer science or a related field. Experience with version control systems like Git, familiarity with agile methodologies, and sometimes certifications such as AWS Certified Developer or Microsoft Certified: Azure Developer Associate are advantageous. Strong problem-solving skills, teamwork, and effective communication are standout soft skills in this position. These combined skills enable engineers to deliver high-quality code, collaborate efficiently within development teams, and adapt to evolving project requirements.

Is 25 too late to become a mid level software engineer?

Age is not a strict barrier to becoming a mid level software engineer; many professionals transition into software development in their mid-20s or later. Success depends on acquiring relevant skills, such as programming languages and experience with development tools, through self-study, coding bootcamps, or formal education. Employers value skills and experience over age, so with dedication, starting at 25 is entirely feasible.

What does a mid level software engineer earn?

A mid-level software engineer typically earns between $80,000 and $120,000 annually, depending on location, industry, and experience. They often have 2-5 years of experience and may work with programming languages like Java, Python, or C++, using tools such as Git and Agile methodologies.

What cities near Stockton, IL are hiring for Mid Level Software Engineer jobs?

Cities near Stockton, IL with the most Mid Level Software Engineer job openings:

Mechanical Systems Engineer

Constellation Energy

Shannon, IL • On-site

$122K - $154K/yr

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Re-posted 1 hour ago


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 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 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, 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 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 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

What Constellation Energy employees say

Pay

Benefits

Hours and flexibility

Workplace

Get the full story on Breakroom