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

Tech Tammina

Embedded Software Engineer

Mossville, IL · On-site

$95K - $126K/yr

Embedded Software Engineer 4 location: Mossville, IL (Onsite) Duration: 6-month contract Core ... Set coding standards and best practices while guiding junior and mid-level engineers through ...

Tech Tammina LLC

Embedded Software Engineer

Mossville, IL · On-site

$95K - $126K/yr

Embedded Software Engineer 4 location: Mossville, IL (Onsite) Duration: 6-month contract Core ... Set coding standards and best practices while guiding junior and mid-level engineers through ...

Tech Tammina

Embedded Software Engineer 4

Mossville, IL · On-site

$95K - $126K/yr

Role: Embedded Software Engineer 4 Location: Mossville, IL (Onsite) Duration: 6-month contract ... Set coding standards and best practices while guiding junior and mid-level engineers through ...

Caterpillar

Senior Software Engineer

Peoria, IL · On-site

$120K - $158K/yr

As a Senior Software Engineer on the CAT Digital - Global Services Application Team, you will help ... Will mentor junior developers provide technical assistance as needed, perform code reviews, work ...

Caterpillar Brazil

Senior Software Engineer

Peoria, IL · On-site

$112.71 - $183.14/hr

## Senior Software EngineerApplylocations: Peoria, Illinois: Chicago, Illinois: Irving, Texastime type ... Will mentor junior developers provide technical assistance as needed, perform code reviews, work ...

Vista Robotics

Software QA Intern

Peoria, IL · On-site

$19 - $24.75/hr

We are looking for a Software QA Intern to join Vista Robotics, a leading company in the field of computer software and engineering. As a Software AQ Intern, you will play a crucial role in ensuring ...

Danaher

Software Engineer Internships

Peoria, IL · On-site

About Software Engineering Roles at Danaher Are you passionate about building real-world applications, writing clean code, and solving meaningful technical challenges? As a Software Engineering ...

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Junior Software Developer information

See Peoria, IL salary details

$23.5K

$87.3K

$134.9K

How much do junior software developer jobs pay per year?

As of Aug 11, 2026, the average yearly pay for junior software developer in Peoria, IL is $87,302.00, according to ZipRecruiter salary data. Most workers in this role earn between $65,700.00 and $85,400.00 per year, depending on experience, location, and employer.

What are some typical challenges a junior software developer might face when starting out, and how can they overcome them?

Junior Software Developers often encounter challenges such as understanding large codebases, managing their time effectively between learning and delivering tasks, and adapting to new development tools or frameworks. To overcome these hurdles, it's helpful to actively seek guidance from more experienced team members, participate in code reviews, and make consistent use of documentation. Regular communication within the team and a willingness to ask questions can significantly speed up the learning process and help build confidence in your role.

What does a junior software developer do?

A junior software developer works on a development team writing and maintaining code for computer applications. As a junior software developer, your primary responsibilities are to learn the codebase, work on small bug fixes, and participate in paired programming with mid-level and senior developers. Junior software developers are entry-level positions, but as you gain experience and build up your programming skills, you will start to take on larger projects. Your job duties include attending and contributing to development team meetings, troubleshooting, patching computer code, and collaborating with other developers to create applications.

What are the key skills and qualifications needed to thrive as a junior software developer, and why are they important?

To thrive as a Junior Software Developer, you need proficiency in programming languages (such as Python, Java, or JavaScript), algorithms, and problem-solving, often supported by a relevant degree or coding bootcamp experience. Familiarity with version control systems like Git, basic knowledge of databases, and experience with development frameworks are valuable technical assets. Strong communication, teamwork, and a willingness to learn help you adapt and contribute effectively in collaborative environments. These skills and qualities are essential for delivering reliable code, supporting team goals, and growing in a fast-evolving tech landscape.

What does a junior software developer do?

A Junior Software Developer is an entry-level professional who assists in designing, coding, testing, and maintaining software applications. They typically work under the supervision of more experienced developers and contribute to various stages of the software development lifecycle. Their responsibilities often include writing basic code, debugging, collaborating with team members, and learning new technologies to improve their skills. This role is a great starting point for individuals looking to build a career in software development.
More about Junior 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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What cities near Peoria, IL are hiring for Junior Software Developer jobs? Cities near Peoria, IL with the most Junior Software Developer job openings:
Junior Software Developer jobs near you
Infographic showing various Junior Software Developer job openings in Peoria, IL as of August 2026, with employment types broken down into 87% Full Time, and 13% Contract. Highlights an 95% In-person, and 5% Remote job distribution, with an average salary of $87,302 per year, or $42 per hour.

Model-Based Software Developer (MATLAB/Simulink)

Sovereign Technologies

Peoria, IL • On-site

$44.50 - $56.75/hr

Other

Posted 6 days ago

Job description

Overview

We are seeking Model-Based Software Developers to support the restructuring and modernization of a large, complex software model. This role is focused on model-based software development rather than traditional controls engineering, though candidates with a controls background are welcome if they have strong model-based development experience.

The team is breaking down a large monolithic model into smaller, modular components, rebuilding libraries, and standardizing interfaces. This work is primarily performed in MATLAB/Simulink and represents the first phase of a broader software transformation effort supporting a high-visibility program.

Key Responsibilities

  • Decompose large MATLAB/Simulink models into smaller, modular components using a defined mega-model architecture
  • Rebuild and standardize software libraries, including standardized inputs/outputs and interfaces
  • Implement model-based software within an AUTOSAR wrapper (model-based AUTOSAR)
  • Update and maintain unit tests and simulations as models are restructured
  • Perform and support MIL (Model-in-the-Loop) testing as models are broken into modular elements
  • Support simulation and testing activities using tools such as dSPACE, including limited HIL modification where applicable
  • Collaborate with the team to define testing strategies, focusing on how software should be tested within a model-based environment

Required Qualifications

  • Strong experience with MATLAB/Simulink for model-based software development
  • Experience developing, modifying, or restructuring model-based software
  • Understanding of MIL testing and simulation-based validation
  • Ability to work within a structured architecture and follow standardized modeling and I/O practices

Preferred Qualifications

  • Experience with AUTOSAR, particularly model-based AUTOSAR development
  • Familiarity with dSPACE tools and environments
  • Exposure to HIL testing or modifying HIL setups
  • Background in controls engineering with strong software modeling focus

Experience Level

  • Open to a range of experience levels
  • Team will include a mix of junior and senior engineers

Additional Notes

This role is heavily focused on model restructuring, architecture, testing strategy, and simulation rather than algorithm design or traditional controls tuning. Candidates who enjoy breaking apart complex systems, improving structure, and enabling scalable testing will be a strong fit.

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