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Freelance Embedded System Software Engineer Jobs in Brea, CA

Motorola

Embedded Software Engineer

Los Angeles, CA · Hybrid

$48.08 - $67.31/hr

Linux system customization and scripting. REQUIRED QUALIFICATIONS * Bachelor of Science degree in ... or relevant engineering fields. * 3 years of relevant embedded system software development ...

Motorola

Senior Embedded Software Engineer

Los Angeles, CA · Hybrid

$135K - $200K/yr

This is an opportunity to work on all aspects of the system including device drivers, networking functions and services, encryption, and security features. This Senior Embedded Software Engineer ...

Silvus Technologies

Embedded Software Engineer

Irvine, CA · On-site

$141K - $185K/yr

THE OPPORTUNITY Silvus is seeking an Embedded Software Engineer to join our Engineering Group ... This is an opportunity to work on all aspects of the system including device drivers, networking ...

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All JobsEmbedded System Software Engineer JobsFreelance Embedded System Software Engineer JobsFreelance Embedded System Software Engineer Jobs in Brea, CA

Freelance Embedded System Software Engineer information

See Brea, CA salary details

$72.5K

$158.9K

$180.2K

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

As of Sep 5, 2026, the average yearly pay for freelance embedded system software engineer in Brea, CA is $158,883.00, according to ZipRecruiter salary data. Most workers in this role earn between $136,200.00 and $179,200.00 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 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 popular job titles related to Freelance Embedded System Software Engineer jobs in Brea, CA?

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

What cities near Brea, CA are hiring for Freelance Embedded System Software Engineer jobs?

Cities near Brea, CA 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 Brea, CA as of August 2026, with employment types broken down into 1% Internship, 1% As Needed, 81% Full Time, 12% Part Time, and 5% Contract. Highlights an 91% Physical, 2% Hybrid, and 7% Remote job distribution, with an average salary of $158,883 per year, or $76.4 per hour.

Sr Embedded Systems Software Engineer

Accord Technologies Inc.

Irvine, CA • On-site

Contractor

Medical

Re-posted 29 days ago

Job description

Position : Sr Embedded Systems Software Engineer
Location: Irvine CA (100% Onsite)
Visa: USC/GC
Total Position 2

Note: Embedded System software engineer - should be able to architect, design and implement application layer. If this person has similar experience, Medical Device/Automotive/Avionics/Robotics/Rail/Industrial Automation. This is not a web based design, motor control, or only a BMS control engineer – it is an overall system engineer.

 
Key Skills:
 
  • Embedded C/C++
  • System-Level Control Logic
  • State Machines & Sequencing
  • CAN/CAN FD, SPI, Ethernet
  • MATLAB/Simulink
  • Real-Time Software Architecture
  • System Integration & Validation
Required Qualifications
 
  • 5+ years of experience developing embedded control software for complex real-time systems
  • Strong proficiency in embedded C/C++ and real-time software architecture
  • Experience designing system-level control logic, state machines, and sequencing
  • Hands-on experience with communication protocols such as CAN (and derivatives), SPI,
  • Ethernet
  • Experience with model-based design tools (MATLAB/Simulink)
  • Proven ability to integrate and debug software across hardware, firmware, and system
  • boundaries
  • Strong analytical skills and system-level problem-solving ability.
 
Preferred / Bonus Experience
 
  • Experience with TI C2000, NXP, or similar real-time control microcontrollers
  • Prior work on safety-critical or regulated systems (Medical Device/Automotive/Avionics/Robotics/Rail/Industrial Automation)
  • Experience defining software architectures and development processes for growing teams
  • Background spanning motor control, BMS, or vehicle control systems
  • Experience supporting production launch, field issues, and system-level validation