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Freelance Embedded System Software Engineer Jobs in Illinois

Swoon Group

Embedded Software Engineer 1

Chillicothe, IL · On-site

$119K - $156K/yr

Computer Engineering ), NO 2 year degrees, Open to Masters * Engine Testing, Validation ... Understanding of embedded systems and electronic control modules (ECMs) * Knowledge of software ...

Purple Hires Inc

Embedded Software Engineer

Mossville, IL · On-site

$95K - $126K/yr

Work with global software, systems, machine, and validation teams. * Support system-level feature development and integration. Must-Have Skills * Strong C/C++ programming * Embedded software ...

RFA Engineering

Embedded Software Engineer

Chillicothe, IL · On-site

$75K - $115K/yr

Embedded Software Engineer This position is associated with the design and development of embedded ... Collaborate with electrical, systems, validation, and manufacturing teams to ensure successful ...

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Freelance Embedded System Software Engineer information

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 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.

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 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.

What are the most commonly searched types of Embedded System Software Engineer jobs in Illinois?

The most popular types of Embedded System Software Engineer jobs in Illinois are:

What are popular job titles related to Freelance Embedded System Software Engineer jobs in Illinois?

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

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

The top searched job categories for Freelance Embedded System Software Engineer jobs in Illinois are:

What cities in Illinois are hiring for Freelance Embedded System Software Engineer jobs?

Cities in Illinois with the most Freelance Embedded System Software Engineer job openings:

Freelance Embedded System Software Engineer jobs near you

Embedded Software Engineer 1

Swoon Group

Chillicothe, IL • On-site

$119K - $156K/yr

Other

Posted 4 days ago

Job description

Location: Chillicothe,IL
Expected Start Date: Aug 10, 2026
#100005
Title: Embedded software engineer 1
Location: Mossville , IL- 100% onsite (preference first goes to local candidates, open to non-local candidates who can 100% relocate 2 weeks from offer and be onsite day 1 at their own cost)
Type: Contract
Hours" 8-5 M-F, 40 hour work days
Pay: range $ 41.93 /hour on w2- no flex, exact rate
Length: 12 months- possibility to extend
Screenings: no tech, full panel drug and background once hired
+optional benefits, long term contract with ability to extend
? Must haves:
  • Years of experience: 0-3
  • Degree requirement: Bachelor's of Science in Engineering (Electrical or
  • Computer Engineering ), NO 2 year degrees, Open to Masters
  • Engine Testing, Validation & Troubleshooting
  • Data Analysis and Root Cause Investigation
  • Software/Test Automation Development (Python, C#, or similar)
  • Understanding of embedded systems and electronic control modules (ECMs)
  • Knowledge of software verification and validation processes
  • Ability to analyze test results and identify root causes
  • Familiarity with CAN/J1939 communication and diagnostic tools
  • Experience working with test equipment, data acquisition systems, or HIL/SIL environments
  • Understanding of requirements-based testing and defect tracking
(Desired)
  • Engine controls or engine systems experience
  • Experience with dSPACE, Vector CANoe/CANalyzer, ET, or similar tools
  • Experience developing automated regression test suites

Soft Skills
(Required)
  • Strong analytical and problem-solving skills
  • Ability to learn new systems and tools quickly
  • Effective verbal and written communication skills
  • Attention to detail and commitment to quality
  • Strong teamwork and collaboration skills
(Desired)
  • Experience presenting technical findings to stakeholders
  • Ability to influence decisions through data-driven recommendations

Job Description: Summary:
The main function of an embedded software engineer is to apply the principles of computer science and mathematical analysis to the design, development, testing, and evaluation of the embedded software and systems that make computers work. A typical embedded software engineer researches, designs, develops and tests operating systems-level software, compilers, and network distribution software for medical, industrial, military, communications, aerospace, business, scientific and general computing applications.
Job Responsibilities:
Design and implement software of embedded devices and systems from requirements to production and commercial deployment for product lines.
Write and code logical and physical database descriptions and specify identifiers of database to management system or direct others in coding descriptions.
Analyze and enhance efficiency, stability and scalability of system resources
Review project requests describing database user needs to estimate time and cost required to accomplish project.
Skills:
Verbal and written communication skills, problem solving skills, customer service and interpersonal skills.
Knowledge of reading schematics and data sheets for components
Basic knowledge of the full software development lifecycle: from business/systems analysis, through requirements gathering and functional specification authoring, to development, testing and delivery.
Basic ability to troubleshoot issues and make system changes as needed to resolve issue.
Basic knowledge of computer hardware and software. Solid programming experience in C or C++
Knowledge of computer development software as it relates to embedded systems, such as SQL, VisualBasic, etc.
Position's Contributions to Work Group :
  • Core Gas Engine Software Test team requires a dedicated resource to focus on test automation. These automation packages will be heavily used for production file delivery. (Currently mostly delivered with Manual Testing)

Typical task breakdown:
  • Engine software validation and test execution
  • Test result analysis, defect investigation, and root cause analysis
  • Test automation development and maintenance (Automation driver file updates, script development, debugging)
Interaction with team :
  • Collaborate daily with software developers, controls engineers, test engineers, and validation engineers.
Team Structure
  • Reports to: Engineering Team Lead / Project Team Lead
Work environment :
  • All work will be in a Soft lab with a combination of computer-based automation development and hands-on interaction with test systems and engine controls.
  • No PPE required

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