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Freelance Embedded System Software Engineer Jobs in Peoria, IL

Caterpillar

Embedded Software Engineer

Mossville, IL · On-site

$97K - $146K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

As a part of the System Diagnostics team, the Embedded Software Engineer will design, develop, and deliver IO processing software for Caterpillar NPI programs. You will focus on implementing on-board ...

The AES Group

Embedded Software Engineer

Mossville, IL · On-site

$95K - $126K/yr

Embedded Software Engineer Location: Mossville, IL - Onsite, 5 days/week Let's create our future ... Collaborate with global systems, software, machine, and validation teams in an Agile/Sprint ...

ChaTeck Incorporated

Embedded Software Engineer

Mossville, IL · On-site

$95K - $126K/yr

Master's degree accepted with 5+ years. • Strong C/C++ programming and software design/analysis. • Experience with Git, debuggers, compilers, CTest/GTest. • Knowledge of embedded systems, Linux ...

Neshent Technologies

Embedded Software Engineer

Lowpoint, IL

$121K - $159K/yr

We are seeking a skilled Embedded Software Engineer to design, develop, test, and maintain embedded ... Develop operating system-level software, device drivers, and embedded applications. * Analyze ...

New

Neshent Technologies

Embedded Software Engineer

Dunlap, IL

$130K - $171K/yr

We are seeking a skilled Embedded Software Engineer to design, develop, test, and maintain embedded ... Develop operating system-level software, device drivers, and embedded applications. * Analyze ...

Neshent Technologies

Embedded Software Engineer

Groveland, IL · On-site

$125K - $165K/yr

We are seeking a skilled Embedded Software Engineer to design, develop, test, and maintain embedded ... Develop operating system-level software, device drivers, and embedded applications. * Analyze ...

Neshent Technologies

Embedded Software Engineer

Sparland, IL · On-site

$120K - $158K/yr

We are seeking a skilled Embedded Software Engineer to design, develop, test, and maintain embedded ... Develop operating system-level software, device drivers, and embedded applications. * Analyze ...

Neshent Technologies

Embedded Software Engineer

Edwards, IL · On-site

$127K - $168K/yr

We are seeking a skilled Embedded Software Engineer to design, develop, test, and maintain embedded ... Develop operating system-level software, device drivers, and embedded applications. * Analyze ...

Neshent Technologies

Embedded Software Engineer

Peoria, IL

$129K - $169K/yr

We are seeking a skilled Embedded Software Engineer to design, develop, test, and maintain embedded ... Develop operating system-level software, device drivers, and embedded applications. * Analyze ...

New

Neshent Technologies

Embedded Software Engineer

Rome, IL · On-site

$117K - $154K/yr

We are seeking a skilled Embedded Software Engineer to design, develop, test, and maintain embedded ... Develop operating system-level software, device drivers, and embedded applications. * Analyze ...

Neshent Technologies

Embedded Software Engineer

Bellevue, IL · On-site

$128K - $169K/yr

We are seeking a skilled Embedded Software Engineer to design, develop, test, and maintain embedded ... Develop operating system-level software, device drivers, and embedded applications. * Analyze ...

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All JobsEmbedded System Software Engineer JobsFreelance Embedded System Software Engineer JobsFreelance Embedded System Software Engineer Jobs in Peoria, IL

Freelance Embedded System Software Engineer information

See Peoria, IL salary details

$68.7K

$150.5K

$170.7K

How much do freelance embedded system software engineer jobs pay per year?

As of Aug 16, 2026, the average yearly pay for freelance embedded system software engineer in Peoria, IL is $150,498.00, according to ZipRecruiter salary data. Most workers in this role earn between $129,000.00 and $169,700.00 per year, depending on experience, location, and employer.

What does a freelance embedded system software engineer do?

A Freelance Embedded System Software Engineer designs, develops, and tests software that runs on embedded systems, which are specialized computing systems within larger devices like cars, appliances, or industrial machines. They typically work independently or on a contract basis, collaborating with clients to understand requirements and deliver customized software solutions. Their responsibilities often include writing low-level code, optimizing for performance and memory usage, and troubleshooting hardware-software integration issues.

What is the difference between Freelance Embedded System Software Engineer vs Embedded Firmware Developer?

AspectFreelance Embedded System Software EngineerEmbedded Firmware Developer
CredentialsTypically requires a degree in electrical engineering, computer science, or related fields; certifications are optionalSimilar educational background; certifications like Certified Embedded Systems Engineer can be advantageous
Work EnvironmentIndependent, project-based work often remote; collaborates with multiple clientsUsually employed by a company or works on in-house projects; may work on-site or remotely
Industry UsageUsed across various industries including IoT, automotive, consumer electronicsPrimarily in product development, consumer electronics, automotive, and industrial systems

Both roles require embedded programming skills and knowledge of hardware. The main difference lies in the work setting: Freelance Embedded System Software Engineers work independently on diverse projects, while Embedded Firmware Developers are often employed by companies focusing on firmware development for specific products.

How do freelance embedded system software engineers typically manage project scope and communication with clients?

Freelance embedded system software engineers often work independently or as part of small remote teams, making clear communication and project scope management essential. They regularly use project management tools and set milestones to clarify deliverables and timelines with clients. Addressing technical constraints and hardware integration challenges early in the process helps avoid misunderstandings. Frequent status updates and transparent discussions about changes or obstacles ensure projects stay on track and meet client expectations.

What are the key skills and qualifications needed to thrive as a freelance embedded system software engineer?

To thrive as a Freelance Embedded System Software Engineer, you need a solid background in embedded C/C++ programming, microcontroller architecture, and real-time operating systems, often supported by a degree in electrical engineering or computer science. Familiarity with hardware debugging tools, version control systems (like Git), and development platforms such as ARM, AVR, or PIC is typically required. Strong problem-solving skills, self-motivation, and clear client communication help freelancers stand out in this role. These competencies ensure reliable, efficient solutions and successful project delivery in dynamic and client-driven environments.

What are popular job titles related to Freelance Embedded System Software Engineer jobs in Peoria, IL?

For Freelance Embedded System Software Engineer jobs in Peoria, IL, the most frequently searched job titles are:

What job categories do people searching Freelance Embedded System Software Engineer jobs in Peoria, IL look for?

The top searched job categories for Freelance Embedded System Software Engineer jobs in Peoria, IL are:

What cities near Peoria, IL are hiring for Freelance Embedded System Software Engineer jobs?

Cities near Peoria, IL with the most Freelance Embedded System Software Engineer job openings:

Freelance Embedded System Software Engineer jobs near you
Infographic showing various Freelance Embedded System Software Engineer job openings in Peoria, IL as of August 2026, with employment types broken down into 1% As Needed, 83% Full Time, 13% Part Time, and 3% Contract. Highlights an 92% Physical, 2% Hybrid, and 6% Remote job distribution, with an average salary of $150,498 per year, or $72.4 per hour.

Embedded Software Engineer

Caterpillar

Mossville, IL • On-site

$97K - $146K/yr

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Re-posted 18 days ago

Caterpillar Inc. rating

7.4

Company rating: 7.4 out of 10

Based on 480 frontline employees who took The Breakroom Quiz

288th of 490 rated machine equipment manufacturers

Job description

Career Area:
Engineering
Job Description:
Your Work Shapes the World at Caterpillar Inc.
When you join Caterpillar, you're joining a global team who cares not just about the work we do - but also about each other. We are the makers, problem solvers, and future world builders who are creating stronger, more sustainable communities. We don't just talk about progress and innovation here - we make it happen, with our customers, where we work and live. Together, we are building a better world, so we can all enjoy living in it.
As a part of the System Diagnostics team, the Embedded Software Engineer will design, develop, and deliver IO processing software for Caterpillar NPI programs. You will focus on implementing on-board diagnostics solutions that will help minimize product downtime along with providing value added Diagnostic Trouble Codes (DTC) and related service features.
What you will do:
  • Design, development, and enhancement of system diagnostics software.
  • Creation of detailed software specs from high level customer requirements
  • Testing and debugging embedded system software using different tools/methods available to improve code quality and optimize system performance.
  • Design and implement electronic control systems including all input and output components wired to the electronic control module to ensure compatibility, determine failure modes, and develop on-board diagnostic strategies
  • Identification and resolution of software defects, and proper issue list submissions and management

What you will have:
  • Requirements Analysis: Knowledge of tools, methods, and techniques of requirement analysis; ability to elicit, analyze and record required business functionality and non-functionality requirements to ensure the success of a system or software development project.
  • Analytical Thinking: Knowledge of techniques and tools that promote effective analysis; ability to determine the root cause of organizational problems and create alternative solutions that resolve these problems.
  • Effective Communications: Understanding of effective communication concepts, tools and techniques; ability to effectively transmit, receive, and accurately interpret ideas, information, and needs through the application of appropriate communication behaviors.
  • Software Development: Knowledge of software design and development tools and activities; ability to produce software products or systems in line with product requirements.
  • Technical Troubleshooting: Knowledge of technical troubleshooting approaches, tools and techniques; ability to anticipate, recognize, and resolve technical issues on hardware, software, application or operation
  • Teamwork: Knowledge of the necessity and value of teamwork; experience with; ability to work cooperatively towards shared goals and being supportive of others at all levels.
  • Explains own role and responsibility within team.
  • Actively participates in team meetings.
  • Shares information, knowledge, and experiences openly and proactively.
  • Demonstrates open, friendly, accepting, and supportive behaviors with team members.

Top Candidates will have:
  • A bachelors in Electrical/Computer Engineering, Electronics Technology or a related field from an accredited school
  • Understanding of embedded programming languages (C or C++) and Matlab/Simulink
  • Strong foundation in system software development, including validation of embedded systems and diagnostics
  • Ability to collaborate with worldwide teams in multiple organizations and functions to drive results and resolve complex issues
  • The candidate must be detail oriented and a proven "self starter," with a strong record of achievement and results

Additional Details:
  • This position requires the candidate to work full-time at the Mossville, IL office
  • Domestic relocation assistance is available for this position
  • Visa sponsorship is available for this position

Summary Pay Range:
$97,530.00 - $146,290.00
Compensation and benefits offered may vary depending on multiple individualized factors, job level, market location, job-related knowledge, skills, individual performance and experience. Please note that salary is only one component of total compensation at Caterpillar.
Benefits:
Subject to plan eligibility, terms, and guidelines. This is a summary list of benefits.
  • Medical, dental, and vision benefits*
  • Paid time off plan (Vacation, Holidays, Volunteer, etc.)*
  • 401(k) savings plans*
  • Health Savings Account (HSA)*
  • Flexible Spending Accounts (FSAs)*
  • Health Lifestyle Programs*
  • Employee Assistance Program*
  • Voluntary Benefits and Employee Discounts*
  • Career Development*
  • Incentive bonus*
  • Disability benefits
  • Life Insurance
  • Parental leave
  • Adoption benefits
  • Tuition Reimbursement

* These benefits also apply to part-time employees
This position requires working onsite five days a week.
Relocation is available for this position.
Visa sponsorship is available for eligible applicants.
Posting Dates:
Any offer of employment is conditioned upon the successful completion of a drug screen.
Caterpillar is an Equal Opportunity Employer, Including Veterans and Individuals with Disabilities. Qualified applicants of any age are encouraged to apply.
Not ready to apply? Join our Talent Community.

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