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

Caterpillar

Sr. Software Engineer

Peoria, IL · On-site

$112.71K - $183.14K/yr

Applicants who are interested in this position should apply via www.caterpillar.com/careers, search [Sr. Software Engineer / R0000360442 ] . #LI-DNI Summary Pay Range: $112,710.00 - $183,140.00 ...

Caterpillar

Sr. Software Engineer

Peoria, IL · On-site

$112.71K - $183.14K/yr

Applicants who are interested in this position should apply via www.caterpillar.com/careers , search [Sr. Software Engineer / R0000360442 ] . #LI-DNI Summary Pay Range: $112,710.00 - $183,140.00 ...

Nanosoft Consulting

Embedded Software Engineer

Mossville, IL · On-site

$95.90K - $126.20K/yr

This is a 13 month contract As the ICS senior software engineer, you will be responsible for developing UI/UX display software for the Energy and Transportation applications. In this job role, you ...

DataAnnotation

Senior Software Engineer

Peoria, 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

Software Developer

Peoria, 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 ...

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How much do senior software developer jobs pay per hour?

As of May 28, 2026, the average hourly pay for senior software developer in Peoria, IL is $60.57, according to ZipRecruiter salary data. Most workers in this role earn between $51.39 and $67.93 per hour, depending on experience, location, and employer.

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 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 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 Peoria, IL? The most popular types of Software Developer jobs in Peoria, IL are:
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Senior Software Developer jobs near you
Embedded Software Engineer 3

Embedded Software Engineer 3

Software Technology Inc

Mossville, IL • On-site

$95.90K - $126.20K/yr

Other

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

Job description

Embedded Software Engineer 3 (C++, Linux)

As a senior positioning software developer, you’ll develop and bring to production products that enable autonomous and manned systems to estimate their position, altitude, and rates of change as they navigate through construction and mining environments.

Research and Develop new technology software systems in a C++ Linux Development Environment. Develop Positioning Algorithms and Software Modules. Develop Sensor Interfaces and Communication Pipelines Via J1939 CAN and Ethernet.

C++, J1939 CAN, Ethernet, GNSS, LiDAR, IMU’s, Wireshark

C++ Linux Development Environment

As a senior positioning software developer, you’ll develop and bring to production products that enable autonomous and manned systems to estimate their position, altitude, and rates of change as they navigate through construction and mining environments. This includes overall state estimation and machine localization leveraging sensor fusion and filtering algorithms, sensor interfacing, and overall system health all while balancing data link and compute bandwidth. We’re looking for a self-starter, who’s capable of taking real-world problems, creating requirements, developing features, and validation through comprehensive testing and simulation. The senior software developer will work among a team in a fast-paced work environment with a high focus on quality. Continuous learning along with good technical and communication skills are a must for this position.

Research and develop new technology software systems in a C++ Linux Development Environment

Creation of comprehensive unit test and automated regression validation tools

Develop Positioning Algorithms and Software Modules

Develop Sensor Interfaces and Communication Pipelines via J1939 CAN and Ethernet

Develop Technical Specifications for Positioning and Localization System Applications

Issue resolution thru triage and troubleshooting

Evaluate new products with a focus on Positioning Technologies (GNSS, Inertial Sensors (IMU), LiDAR, RF Ranging)

Communicate results to customers, suppliers, team members, and other business units

Building Test fixtures and harnesses / Lab bench maintenance

Understanding of Robotics Operating System (ROS)

Good teamwork, communication, analysis, and troubleshooting skills are required.

The individual should be a self-starter, highly motivated, able to learn at an accelerated pace, and willing to put in the time to get the job done.

Must have Strong math background and strong computational geometry skills.

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