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Senior Software Developer Jobs in Freeport, IL (NOW HIRING)

TecTammina

Software Engineer - Inspection

Rockford, IL · On-site

Company Description Tech Tammina LLC Design, analysis, programming, debugging, and modification of software for composite applications Investigate application engineering tasks and prepare design ...

Harris

Software Engineer

Oregon, IL · On-site

$70K - $80K/yr

The Software Engineer will work with colleagues to deliver reliable and scalable applications that contribute to keeping first responders in the field safe, efficient, and informed with mission ...

TecTammina

Software Engineer - Inspection

Rockford, IL · On-site

... Software Development * Any experience related to Manufacturing, Industrial Machinery, or customer support forSoftware Applications is a plus Qualifications Programming knowledge and skills in C ...

WaterSurplus

Senior Electrical Engineer

Loves Park, IL · On-site

$103K - $134K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

ABOUT THE JOB The Senior Electrical Engineer is responsible for designing, directing, and ... Engineers projects by selecting and designing electrical hardware and software, developing detailed ...

Hawkins Inc.

Senior Electrical Engineer

Loves Park, IL · On-site

$103K - $134K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

ABOUT THE JOB The Senior Electrical Engineer is responsible for designing, directing, and ... Engineers projects by selecting and designing electrical hardware and software, developing detailed ...

Hawkins

Senior Electrical Engineer

Loves Park, IL · On-site

$103K - $134K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

ABOUT THE JOB The Senior Electrical Engineer is responsible for designing, directing, and ... Engineers projects by selecting and designing electrical hardware and software, developing detailed ...

Safecor Health

Sr. Specialist, Engineering

Rockford, IL · On-site

$38 - $45/hr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

Develop CNC machining programs using CAM software and CNC controls. * Set up and operate CNC ... Support engineering projects and other duties as assigned by the Sr. Manager, Engineering. Required ...

Safecor Health

Sr. Specialist, Engineering

Rockford, IL · On-site

$38 - $45/hr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

Develop CNC machining programs using CAM software and CNC controls. * Set up and operate CNC ... Support engineering projects and other duties as assigned by the Sr. Manager, Engineering. Required ...

Honeywell

Senior Advanced Manufacturing Engineer

Freeport, IL · On-site

$102K - $127K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

As a Sr Advanced Manufacturing Engineer here at Honeywell, you will lead the development and ... software - that help make the world smarter, safer and more sustainable. You Must Have: * 5+ years ...

Honeywell

Senior Advanced Manufacturing Engineer

Freeport, IL · On-site

$102K - $127K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

As a Sr Advanced Manufacturing Engineer here at Honeywell, you will lead the development and ... software - that help make the world smarter, safer and more sustainable. You Must Have: * 5+ years ...

Emerson

Senior Electrical Engineer (Hardware)

Rockford, IL

$100K - $140K/yr

  • Medical

  • Dental

  • Vision

  • Retirement

As a Senior Electrical Engineer in Elyria, OH or Rockford, IL, you'll collaborate with Mechanical, Embedded Systems, and Software teams to turn bold concepts into reliable products that delight ...

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All JobsSoftware Developer JobsSenior Software Developer JobsSenior Software Developer Jobs in Freeport, IL

Senior Software Developer information

See Freeport, IL salary details

$14

$58

$82

How much do senior software developer jobs pay per hour?

As of Aug 16, 2026, the average hourly pay for senior software developer in Freeport, IL is $58.03, according to ZipRecruiter salary data. Most workers in this role earn between $49.28 and $65.10 per hour, depending on experience, location, and employer.

What skills and qualifications are needed to thrive as a senior software developer?

To thrive as a Senior Software Developer, you need deep expertise in programming languages, software architecture, and problem-solving, typically backed by a bachelor’s degree in computer science or a related field. Proficiency with development frameworks, version control systems like Git, and cloud platforms such as AWS or Azure is standard, and certifications in these areas can be beneficial. Leadership, strong communication, and mentoring abilities set standout candidates apart in this role. These skills ensure that complex projects are delivered efficiently, code quality is maintained, and junior team members are effectively guided for overall team success.

What does a senior software developer do?

As a Senior Software Developer, you’ll typically be responsible for leading complex development projects, designing technical solutions, and mentoring junior team members. Daily tasks often include writing and reviewing code, participating in architecture discussions, collaborating with cross-functional teams (such as QA, product management, and DevOps), and troubleshooting high-level technical issues. You may also be involved in setting coding standards, conducting code reviews, and helping to plan sprints or project roadmaps.

What is a senior software developer?

Senior Software Developers are experienced professionals who design, develop, and maintain complex software applications. They often lead development teams, mentor junior developers, and make critical architectural decisions. Their responsibilities include writing high-quality code, troubleshooting technical issues, and ensuring that software projects meet performance and security standards. With deep expertise in programming languages and software engineering principles, they play a key role in delivering successful technology solutions for organizations.

What is the difference between Senior Software Developer vs Software Engineer?

AspectSenior Software DeveloperSoftware Engineer
CredentialsBachelor's degree in CS or related field; experience often 5+ yearsBachelor's or higher in CS or related field; similar experience levels
Work EnvironmentCollaborates on complex projects, mentors juniors, leads technical effortsDesigns, develops, tests software; may work on specific modules or systems
Industry UsageCommonly used in tech companies, startups, and enterprise firmsWidely used across industries, often interchangeable with developer roles

The main difference is that Senior Software Developers typically have more experience, leadership responsibilities, and focus on complex project oversight, while Software Engineers may focus more on designing and implementing software solutions. Both roles require similar credentials and are integral in software development teams, but Senior Software Developers often take on mentorship and strategic tasks.

More about Senior Software Developer jobs

What cities near Freeport, IL are hiring for Senior Software Developer jobs?

Cities near Freeport, IL with the most Senior Software Developer job openings:

Senior Software Developer jobs near you
Infographic showing various Senior Software Developer job openings in Freeport, IL as of August 2026, with employment types broken down into 1% Internship, 82% Full Time, 12% Part Time, 4% Contract, and 1% Nights. Highlights an 86% Physical, 4% Hybrid, and 10% Remote job distribution, with an average salary of $120,702 per year, or $58 per hour.

Aerospace Software Engineer

SWITS DIGITAL Private Limited

Rockford, IL • On-site

Full-time

Re-posted 17 days ago

Job description

Title - Aerospace Software Engineer
Location: Rockford, IL/ Plano, TX
Job Description:
Required Skills:
  • 5+ years latest hands-on experience with DO-178B / C
  • Embedded software development experience is mandatory with Programming in C
  • Experience in Aerospace domain is preferred
  • Hands on Experience in embedded software development adhering to aerospace standards DO178B/C, Reviews and Testing.
  • Good to have (but not mandatory) MATLAB and related tool
  • Mandatory experience in Requirement Analysis, Design & Development
  • Mandatory experience in using IBM DOORS
  • Good to have the knowledge with Siemens Polarion
  • Experience in in Change management process (Change Request process)
  • Mandatory experience with Configuration management experience using SVN
  • Bachelor's Degree in Science, Technology, Engineering or Mathematics (STEM)

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