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

Intellectt INC

Software V&V Lead

Rockford, IL · On-site

$116K - $145K/yr

We are looking for an experienced Aerospace Software Verification Engineer with 10+ years of experience in instrumentation, Structural Coverage Analysis (SCA), build creation, and coverage analysis.

Purple Hires Inc

Software V&V Lead

Rockford, IL · On-site

$116K - $145K/yr

Proficiency in programming languages commonly used in avionics systems (e.g., C, Ada) * Experience with software testing tools and frameworks for unit, integration SSIT and HSIT), and system level ...

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 ...

DataAnnotation

Software Engineer

Rockford, IL · Remote

$40 - $75/hr

Our platform offers an engaging blend of flexibility and challenge: you'll work closely with state-of-the-art AI models to take on programming tasks that include creating and solving challenging ...

DataAnnotation

Frontend Software Engineer

Rockford, IL · Remote

$40 - $75/hr

Our platform offers an engaging blend of flexibility and challenge: you'll work closely with state-of-the-art AI models to take on programming tasks that include creating and solving challenging ...

DataAnnotation

Full Stack Software Engineer

Rockford, IL · Remote

$40 - $75/hr

Our platform offers an engaging blend of flexibility and challenge: you'll work closely with state-of-the-art AI models to take on programming tasks that include creating and solving challenging ...

MasTec Industrial

Senior Scheduler

Rockford, IL · Hybrid

We provide EPC (Engineering, Procurement, and Construction) services and assist in project ... Controls software. * Demonstrates a command of the skills listed. * Proficiency in reading and ...

TH Foods, Inc.

Senior Scientist

Loves Park, IL · On-site

$87K - $119K/yr

Collaborate with Operations, Quality, and Process Engineering staff to troubleshoot, problem-solve ... Proficiency in standard office software (e.g., Microsoft Office). * Flexibility to work off-shift ...

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Senior Software Developer information

See Freeport, IL salary details

$14

$58

$82

How much do senior software developer jobs pay per hour?

As of Jun 12, 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 is the average salary of a senior software developer?

The average salary of a senior software developer typically ranges from $100,000 to $150,000 annually, depending on experience, location, and industry. Factors such as proficiency in programming languages, experience with cloud platforms, and certifications can influence compensation levels.

What are the key skills and qualifications needed to thrive as a Senior Software Developer, and why are they important?

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 is L1, L2, L3, and L4 developer?

In the context of a Senior Software Developer role, L1, L2, L3, and L4 typically refer to different levels of experience and responsibility within an organization, with L1 being entry-level and L4 being senior or lead positions. These levels often correspond to increasing technical skills, project management capabilities, and leadership responsibilities, and are used to structure career progression and compensation. The specific definitions can vary by company, but generally, higher levels require more advanced coding, problem-solving, and mentorship skills.

What Is a Senior Software Developer?

Senior software developers have several years of experience in the software industry. They have proven successful in exceeding client expectations when developing programs and have provided excellent support in the managing of those applications. They have worked their way up from junior software developer positions and have mastered a variety of coding languages and programs. Senior software developers train and oversee a team of junior software developers.

What kinds of projects and responsibilities can a Senior Software Developer expect to handle on a daily basis?

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.

Can I make 200k a year as a software engineer?

Senior software developers in high-cost-of-living areas or with specialized skills such as cloud computing, machine learning, or leadership roles can earn $200,000 or more annually. Compensation varies based on experience, location, company size, and industry, with some senior roles reaching or exceeding this level through bonuses and stock options.

What are Senior Software Developers?

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 engineers make $500,000?

Senior software engineers, especially those with specialized skills in areas like machine learning, cloud computing, or cybersecurity, can earn $500,000 or more annually, often through a combination of base salary, bonuses, and stock options. Such compensation typically requires extensive experience, advanced technical expertise, and work at large tech companies or startups with high growth potential.

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 are the most commonly searched types of Software Developer jobs in Freeport, IL? The most popular types of Software Developer jobs in Freeport, IL are:
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 June 2026, with employment types broken down into 100% Part Time. Highlights an 100% In-person job distribution, with an average salary of $120,702 per year, or $58 per hour.

Software Engineer - Inspection 2603 - OJO

Right Talent Right Now

Rockford, IL

Full-time

Posted 23 days ago

Job description

Job Description

Software Engineer - Inspection 2603 


Role: Information Technology

Relocation Available: Yes

Industry: I.T.

Location: Illinois

Town / City: Rockford

Job Type: Permanent full-time

Job description:

The Software Engineer - Inspection for the Composites Division will become part of a development team that develops software dedicated to the design and manufacturing of composite structures for a variety of applications including, but not limited to, aerospace vehicles. Rank and salary dependent on background/experience.

Design, analysis, programming, debugging, and modification of software for composite applications

Investigate application engineering tasks and prepare design specifications, analysis, and recommendations

Support the "manufacturing process integration" for composite parts

Provide customer support for software deployment and maintenance

Ensure products and services provided by the company meet the highest standards

Become very knowledgeable of the entire hardware & software infrastructure for automated machine tools and robotics equipment

Working closely with other departments to meet the division's goals

Meet deadlines and company goals

Demonstrate continuous improvement philosophy

Qualifications

Programming knowledge and skills in C++ required

Experience developing algorithms and/or filtering methods

Experience in multi-threaded programming

Strong analytical, problem solving, and decision making skills

Solid math background with vectors, 3D geometry, transformations, etc.

Good communication and interpersonal skills

Flexible work attitude and excellent team player

Must be a U.S. Citizen or hold a valid green card

Experience

Recent industry or academic experience in Software Development

Any experience related to Manufacturing, Industrial Machinery, or customer support for Software Applications is a plus

Education

BA / BS in Computer Science, Electrical Engineering, or related field

Alternatively: BS degree in mechanical or aerospace engineering with sufficient experience in a software development environment

Graduate degree is a plus

Bottom Line Requirements:

1. Bachelor's Degree in Engineering.

2. Programming knowledge and skills in C++.

3. Experience developing algorithms and/or filtering methods.

4. Experience in multi-threaded programming



Additional Information

All your information will be kept confidential according to EEO guidelines.

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