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Freelance Embedded System Software Engineer Jobs in Brea, CA

Motorola

Embedded Software Engineer - R&D

Los Angeles, CA · On-site

$48.08 - $67.31/hr

This is an opportunity to work on all aspects of the system including device drivers, networking ... relevant engineering field with a minimum of 2 years of relevant embedded system software ...

CSG

Embedded Software Engineer

Inglewood, CA · On-site

$70 - $90/day

Embedded Software Engineer 12-Month Contract Location: Long Beach, CA Rate: $70-$90/hr Contract: 12 ... You will work closely with hardware, systems and software teams to translate requirements into ...

Actalent

Embedded Software Engineer

Cypress, CA · On-site

$55 - $80/hr

Embedded Software Engineer The Embedded Software Engineer develops hardware, firmware, and ... Design, develop, and implement firmware and software for embedded systems used in modules and ...

Silvus Technologies

Embedded Software Engineer

Irvine, CA · On-site

$48.08 - $67.31/hr

Silvus Technologies , a leading provider of advanced MANET and MIMO communications systems, is ... THE OPPORTUNITY Silvus is seeking an Embedded Software Engineer to join our Engineering Group ...

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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 6, 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.

Principal Embedded Software Engineer

Silvus Technologies

Los Angeles, CA • Hybrid

Full-time

Re-posted 10 days ago

Job description

THE OPPORTUNITY

Silvus is seeking a Principal Embedded Software Engineer, who will report to the Director of Software Engineering on our Software Engineering team. The successful individual in this role will participate in the development of Silvus' MANET radios and advanced research projects.   This is an opportunity to work on all aspects of the system including device drivers, networking functions and services, encryption, and security features.

This position is based at Silvus Technologies' headquarters in the heart of vibrant West Los Angeles, CA, and is on a hybrid schedule.  A minimum of 3 days onsite per week is expected. On-site days are Mondays, Wednesdays, and Thursdays.

The following is a list of at least some of the current essential job functions of the position. Management may assign or reassign duties and responsibilities at any time at its discretion.

ROLE AND RESPONSIBILITIES

  • Lead the architectural design and development of highly efficient low-latency embedded firmware on ARM-based SoCs (e.g., UltraScale+), and optimizing Linux-based networking stacks for wireless applications.
  • Implementation of the software portion of MAC (Medium Access Control) and mobile ad-hoc networking routing protocols.
  • Network management software and web interface implementation.
  • Implementation of different security protocols and encryption algorithms.
  • Audio streaming and push-to-talk voice application implementation.
  • Analyzing and improving product security and robustness to meet certain regulatory requirements such as NIST FIPS 140-3 and NIAP Common Criteria.
  • Implementation of testing software for product performance and reliability testing.
  • Device driver and board support package development and maintenance for both ARM and RISC-V based systems.
  • Linux system customization and scripting.
  • Perform other related duties of which the above are representative.

REQUIRED QUALIFICATIONS

  • Bachelor of Science degree in Electrical Engineering, Computer Science, or relevant engineering fields.
  • 8+ years of relevant embedded system software development experience.
  • Demonstrated hands-on and lead expertise designing and developing embedded firmware using embedded Linux on ARM processors, for networking, signal processing and/or wireless applications
  • Expertise in C programming and experience in Linux kernel driver development.
  • Must be a U.S. Citizen due to clients under U.S. government contracts.
  • All employment is contingent upon the successful clearance of a background check and drug test.

PREFERRED KNOWLEDGE, SKILLS, AND ABILITIES

  • Knowledge of and experience with different security protocols and encryption algorithms such as suite of CNSA algorithms.
  • Demonstrated experience with socket programming and various Internet/Ethernet protocols.
  • Understanding of MAC and Networking layer of a communication system.
  • Experience in AMD UltraScale+ MPSoC and Microchip Polarfire SoC BSP support package development.
  • Deep understanding of Internet Protocol Security (IPsec), network protocols, data authentication and encryption.
  • Linux Interrupt Service Routine development.

WORKING CONDITIONS AND PHYSICAL REQUIREMENTS

  • Office environment.
  • Occasional exposure to heat, cold, and allergens while performing tests or demonstrations in the field.
  • While performing the duties of this job, the employee is required to do the following:
    • Lift equipment up to 20 lbs. for the set-up of demonstrations and testing.
    • Perform bending and reaching movements to place items on lower and higher shelves.
    • Kneeling or squatting to access lower shelves.
    • Walking/Moving in the labs.

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