ZipRecruiter

Log In

1

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

Robert Half

Software Developer

Monroe, WI · On-site

$48 - $52/hr

We are looking for a Mid to Senior Level Software Developer to join a collaborative team supporting a growing portfolio of technology initiatives in Monroe, Wisconsin. This opportunity is within the ...

HPTech Inc.

Software Developer

Rockford, IL · On-site

Title - Software Developer Location: Rockford, Illinois Experience - 5 to 10 years Summary: The job requires a good knowledge of strong analysis, and a thorough understanding of the embedded software ...

Colony Brands, Inc.

Software Developer

Monroe, WI · On-site

As a Software Developer on our Credit/AR development team, you'll work closely with product owners, stakeholders, and other talented developers to design and implement solutions that push the ...

Infostride

Avionics Software Developer

Rockford, IL · On-site

Avionics Software Developer Location: Rockford, IL (Onsite) Immigration Status: First Priority is US person, Second Priority is any visa (H1B/ EAD) Job Summary We are seeking a hands-on Avionics ...

Purple Hires

Avionics Software Developer

Rockford, IL · On-site

We are seeking a hands-on Avionics Software Developer with strong expertise in ADA83/ADA95 programming and DO-178C verification activities . The role requires active contribution to coding, debugging ...

Colony Brands, Inc.

Software Developer 2

Monroe, WI · On-site

As a Software Developer on our Retail Commerce team, you'll work closely with product owners, stakeholders, and other talented developers to design and implement solutions that push the boundaries of ...

SC Data Center, Inc.

Software Developer

Monroe, WI · On-site

SC Data Center, Inc. is a rapidly evolving technology company that supports a diverse set of technology stacks for Colony Brands, Inc. Colony Brands is one of North America's largest multi-channel ...

Maximus

AI/ML Software Developer

Rockford, IL · Remote

... engineering, and model lifecycle management * Implements model monitoring, performance validation, traceability, and reproducibility of AI artifacts * Integrates AI/ML capabilities into software ...

Maximus

AI/ML Software Developer

Rockford, IL · On-site

... engineering, and model lifecycle management * Implements model monitoring, performance validation, traceability, and reproducibility of AI artifacts * Integrates AI/ML capabilities into software ...

SynergisticIT

Junior Java/C++ Developer

Rockford, IL · On-site

$67K - $87K/yr

Currently, we are looking for entry-level software programmers, Java full stack developers, Python/Java developers, data analysts/data engineers/data scientists, machine learning engineers for ...

Lean Synergy Solutions

Software Engineer

Rockford, IL

$80K - $120K/yr

Software Engineer Position Summary We are seeking a talented Software Engineer to join a ... The ideal candidate is a strong C++ developer with excellent analytical skills and an interest in ...

Belcan

Software Engineer

Rockford, IL

$83K - $104K/yr

A Software Engineer job in Rockford, IL is currently available through Belcan at one of our key aerospace clients. We are seeking a highly motivated Software Engineer with a focus on Linux Simulation ...

Apply Early

next page

Showing results 1-20

All 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 Jul 5, 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 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 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.

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 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 Developer

Software Developer

Robert Half

Monroe, WI • On-site

$48 - $52/hr

Temporary

Posted 9 days ago

Job description

We are looking for a Mid to Senior Level Software Developer to join a collaborative team supporting a growing portfolio of technology initiatives in Monroe, Wisconsin. This opportunity is within the fast-moving consumer goods industry and is well suited for a developer who enjoys building reliable applications, contributing across multiple projects, and working with modern Microsoft technologies. This is a Long-term Contract position offering the chance to make a meaningful impact while partnering closely with technical stakeholders in a hands-on environment.
Responsibilities:
• Design, build, and enhance software solutions using C# and the .NET ecosystem to support business-critical applications.
• Collaborate with a small development team to deliver features, resolve technical issues, and maintain steady progress across an active project backlog.
• Create and support web-based functionality using ASP.NET and JavaScript, with attention to performance, usability, and maintainability.
• Develop and maintain integrations between internal applications and cloud-based services, including AWS-connected components.
• Participate in application modernization and integration efforts as project needs evolve, ensuring dependable system interoperability.
• Review existing code, troubleshoot defects, and implement improvements that strengthen application stability and long-term supportability.
• Work with project partners to translate functional needs into practical technical solutions and clearly communicate development progress.• 5+ years of software development experience in a mid-level or senior-level capacity.
• Strong hands-on expertise with C#, .NET, and .NET Framework in enterprise application development.
• Experience building and supporting web applications using ASP.NET and JavaScript.
• Practical knowledge of Amazon Web Services (AWS), including cloud-based integration work.
• Background in application integration and connecting systems across on-premise and cloud environments.
• Ability to contribute effectively within a small team while managing priorities across multiple concurrent projects.
• Strong problem-solving skills and the ability to deliver high-quality code in a fast-paced environment.
Robert Half logo

About Robert Half

Sourced by ZipRecruiter

Founded in 1948, Robert Half pioneered the idea of professional talent solutions to connect opportunities at great companies with highly skilled job seekers. As business needs changed, we evolved to offer specialized talent solutions for finance and accounting, technology, administrative and customer support, creative and marketing, and legal fields. In 2002, we introduced our subsidiary, Protiviti, a global independent risk consulting and internal audit service, to support companies as they faced more strategic business challenges.

Industry

Recruiting and staffing services

Company size

10,000+ Employees

Headquarters location

San Ramon, CA, US

Year founded

1948

View All Robert Half Jobs