Freelance Software Developer C C++ Jobs in Wisconsin

Job Title: Embedded Software Engineer

Job Description

We are seeking a highly motivated Embedded Software Engineer to develop robust, efficient, and scalable software solutions for embedded control systems used in residential and power products. In this role, you work closely with hardware engineers, software engineers, and product teams to design and deliver high-quality embedded software, contribute to new product development and sustaining engineering, and help shape architectures and processes in a connected IoT and cloud-based environment.

Responsibilities

• Design, develop, and maintain embedded software for microcontroller-based systems using C and C++ on real-time operating systems such as QNX, RTX, ZephyrOS, and similar platforms.
• Collaborate with cross-functional hardware, software, and product teams to define software requirements, system architecture, and interface specifications.
• Own elements of embedded software development using layered architectures and embedded operating systems, ensuring scalability, maintainability, and performance.
• Plan and oversee unit testing, integration testing, regression testing, and system validation to ensure software reliability and quality.
• Design software for test, including board bring-up and end-of-line production test strategies and implementations.
• Develop networking implementations and application code for wireless processors supporting Wi-Fi, Bluetooth, ISM, and other communication technologies.
• Implement and support industry-standard communications protocols such as RS-485 (Modbus), SAE J1939 CAN, Ethernet, and USB within embedded systems.
• Perform and participate in code reviews, release processes, and workflow walkthroughs to drive continuous improvement of development practices.
• Support hardware troubleshooting during product development and testing, working closely with circuit and hardware design teams in a co-design environment.
• Document software design, architecture, interfaces, and implementation details in a clear and organized manner.
• Use industry-standard diagnostic tools, including emulators, debuggers, oscilloscopes, and custom diagnostic software, to debug and verify controller software at the unit level.
• Technically lead the breakdown of software scopes of work, and contribute to developing project timelines and budgets for embedded software initiatives.
• Mentor and guide less experienced team members in core embedded software development practices, tools, and methodologies.
• Contribute to both sustaining engineering activities and new product development efforts within an IoT and cloud-connected environment.
• Communicate effectively with diverse audiences to explain technical concepts, project status, and design decisions.

Essential Skills

• Bachelor of Science degree in Electrical and Computer Engineering or Computer Engineering is required; a Master’s degree is preferred.
• At least 6 years of professional work experience in embedded software development
• Strong embedded systems knowledge and experience working closely with hardware and circuits in a co-design environment.
• Demonstrated experience owning elements of embedded software development using layered architectures and embedded operating systems.
• Proficiency in C and C++ programming languages, including syntax, generally accepted code structure, and object-oriented programming concepts.
• Hands-on experience with industry-standard communications protocols such as RS-485 (Modbus), SAE J1939 CAN, Ethernet, and USB.
• Experience designing software for test, including unit testing, regression testing, board bring-up, and end-of-line production testing.
• Practical experience with real-time operating systems (RTOS), including platforms such as QNX, RTX, ZephyrOS, or similar.
• Ability to work effectively in an IoT and cloud-connected environment and understand networking and connectivity considerations for embedded devices.
• Strong engineering with the ability to analyze complex systems, troubleshoot issues, and propose robust solutions.
• Experience participating in or leading release processes, code reviews, and structured development workflows.
• Primarily strong C programming skills, with the ability to prioritize C over C++ where appropriate for embedded applications.

Additional Skills & Qualifications

• Master’s degree in Electrical and Computer Engineering, Computer Engineering, or a related field is preferred.
• Familiarity with CAN analysis tools such as Vector CANalyzer, CANape, and CANoe.
• Familiarity with debuggers and emulators for ARM-based processors and other embedded architectures.
• Experience with wireless and networking technologies, including Wi-Fi, Bluetooth, and ISM bands, is a strong plus.
• Understanding of wireless certification requirements for Wi-Fi, Bluetooth, and ISM, and experience navigating the certification process.
• Familiarity with MATLAB/Simulink for model-based code development and integration into embedded software.
• Experience developing custom diagnostic software to support specialized features or functions in embedded controllers.
• Knowledge of structured release processes and experience walking through workflow and process steps within a development organization.
• Strong communication skills with the ability to convey complex technical information to diverse audiences clearly and effectively.
• High level of motivation, with the ability to collaborate effectively in a team setting and work independently to achieve results.

Work Environment

You work in a connected, cloud-based IoT environment, contributing to both sustaining engineering and new product development for residential and power-related products. The role typically involves spending about three days per week onsite in a lab environment, with flexibility in scheduling as needed. Onsite work includes close collaboration with hardware teams, hands-on interaction with embedded systems and circuits, and use of diagnostic equipment such as oscilloscopes, emulators, and debuggers. You operate within a structured engineering organization that values strong technical backgrounds, formal release processes, thorough code reviews, and clear workflows. The environment emphasizes cross-functional collaboration, continuous improvement, and high-quality engineering standards while providing opportunities to work on cutting-edge embedded, wireless, and networking technologies.

This is a Permanent position based out of Milwaukee, WI.

The pay range for this position is $98900.00 - $125600.00/yr.

Individual compensation offered for this position within this range will depend on many factors, including qualifications, skills, relevant experience, job knowledge, geographic location, internal equity, and other pertinent job-related factors.

Comprehensive coverage includes medical, dental, and vision plans, plus life insurance and retirement options to support your long-term well-being.

This is a hybrid position in Milwaukee,WI.

This position is anticipated to close on Aug 31, 2026.

About Actalent

Actalent is a global leader in engineering and sciences services and talent solutions. We help visionary companies advance their engineering and science initiatives through access to specialized experts who drive scale, innovation and speed to market. With a network of almost 20,000 consultants and 5,000 clients across the U.S., Canada, Asia and Europe, Actalent serves many of the Fortune 500. We are proud to be an Engineering News-Record (ENR) Top 500 Design Firm for our engineering design services and a ClearlyRated Best of Staffing® winner for both client and talent service.

The company is an equal opportunity employer and will consider all applications withoutregard to race, sex, age, color, religion, national origin, veteran status, disability,sexual orientation, gender identity, genetic information or any characteristic protectedby law.

If you would like to request a reasonable accommodation, such as the modification oradjustment of the job application process or interviewing process due to a disability,please email actalentaccommodation@actalentservices.com for other accommodation options.

San Francisco Fair Chance Ordinance:Pursuant to the San Francisco Fair Chance Ordinance, for all positions located in thecity and county of San Francisco, we will consider for employment qualified applicantswith arrest and conviction records.

Massachusetts Lie Detector:It is unlawful in Massachusetts to require or administer a lie detector test as acondition of employment or continued employment. An employer who violates this lawshall be subject to criminal penalties and civil liability.

Use of Artificial Intelligence (AI):We may use Artificial Intelligence (AI) to support parts of our hiring process,including sourcing, screening, and evaluating candidates. AI helps assess applicationsand qualifications, but final decisions are made by our hiring team. By applying, youacknowledge and agree that your application may be reviewed using AI tools.