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Freelance Software Developer Jobs in California (NOW HIRING)

JLab Audio

Junior Developer

Carlsbad, CA · On-site

$31.25 - $40.86/hr

You will work hands-on with JLab's existing software ecosystem -- including NetSuite, Shopify, and ... freelance) * Strong proficiency in at least one modern programming language such as JavaScript ...

Abbott

Cloud Software Engineer II

Los Angeles, CA

$81K - $141K/yr

Minimum 2 years of experience in software development (combination of programming-heavy coursework, school projects, freelance work and professional experience). * Excellent communication skills and ...

Abbott

Cloud Software Engineer II

Los Angeles, CA

$81K - $141K/yr

Minimum 2 years of experience in software development (combination of programming-heavy coursework, school projects, freelance work and professional experience). * Excellent communication skills and ...

Abbott

Cloud Software Engineer II

Sylmar, CA · On-site

$81K - $141K/yr

Minimum 2 years of experience in software development (combination of programming-heavy coursework, school projects, freelance work and professional experience). * Excellent communication skills and ...

Nokia

Software Engineering Coop

Sunnyvale, CA

Position: Software Engineering Co op Number of Position(s): 1 Duration: 4 months Date: Sept-Dec ... freelance work). * Exposure to real-world applications of AI in industry or academia. You Will:

Nokia

Software Engineering Coop

Sunnyvale, CA · On-site

Position: Software Engineering Co op Number of Position(s): 1 Duration: 4 months Date: Sept-Dec ... freelance work). * Exposure to real-world applications of AI in industry or academia. About Us ...

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How much do freelance software developer jobs pay per year?

As of Jun 10, 2026, the average yearly pay for freelance software developer in California is $110,380.00, according to ZipRecruiter salary data. Most workers in this role earn between $88,800.00 and $128,300.00 per year, depending on experience, location, and employer.

What are some typical challenges freelance software developers face when managing multiple clients and projects?

Freelance software developers often juggle several clients at once, which can present challenges in balancing priorities, meeting overlapping deadlines, and maintaining clear communication with each client. Effective time management and setting realistic expectations are essential to avoid burnout and ensure client satisfaction. Additionally, freelancers must stay organized with project tracking tools and proactively address scope changes to keep projects on schedule. Building strong client relationships and transparent communication can help prevent misunderstandings and foster repeat business.

What is a freelance software developer?

A freelance software developer is a self-employed professional who creates, tests, and maintains software applications for various clients on a contract or project basis. Unlike full-time employees, freelancers typically work independently, manage their own schedules, and may take on multiple projects at once. They can specialize in areas such as web development, mobile app development, or software engineering, and often find work through online platforms, networking, or direct referrals. Freelance software developers are responsible for their own business operations, including client communication, billing, and taxes.

How to Become a Freelance Software Developer

Making the transition to working as a freelance software developer entails having extensive knowledge of and experience with several programming languages, ideally those that are in-demand like Java and Python. While you may have expertise in one area, having skills in multiple software technologies can help you find and accept more jobs as you get started. Because you’re working freelance, you need to set up a productive work environment. It’s also essential to compile a portfolio of your best work and host it on either your website or a freelancing job site. This way, you can instantly showcase your experience and skills to a business or client looking to hire for a project, which also helps you negotiate your rate.

What are the key skills and qualifications needed to thrive as a Freelance Software Developer, and why are they important?

To thrive as a Freelance Software Developer, you need strong coding skills in relevant programming languages, a solid understanding of software development methodologies, and a portfolio demonstrating completed projects. Familiarity with source control tools like Git, cloud platforms, and project management software is typically essential, along with knowledge of freelance platforms. Excellent communication, time management, and client relationship-building skills help you stand out in this role. These competencies are crucial for delivering high-quality work independently, attracting and retaining clients, and efficiently managing multiple projects.

What is the difference between Freelance Software Developer vs Software Engineer?

AspectFreelance Software DeveloperSoftware Engineer
CredentialsTypically self-taught or with coding bootcamps; certifications optionalBachelor's or higher in Computer Science or related field; certifications valued
Work EnvironmentIndependent, remote or on-site client projectsEmployed by companies, working in teams or departments
Employer & Industry UsageClients across various industries; project-basedOrganizations, tech firms, startups; ongoing employment
Search & Comparison IntentLooking for freelance opportunities or project-based workSeeking full-time or contract roles within companies

While both roles involve software development, Freelance Software Developers work independently on diverse client projects, often remotely, without long-term employer ties. Software Engineers are typically employed by organizations, working within teams on ongoing projects. Understanding these differences helps in choosing the right career path or job search focus.

More about Freelance Software Developer jobs
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What job categories do people searching Freelance Software Developer jobs in California look for? The top searched job categories for Freelance Software Developer jobs in California are:
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Freelance Software Developer jobs near you
Electronics Engineer / Freelance

Electronics Engineer / Freelance

RKS Design, Inc.

Westlake Village, CA • On-site

Contractor

Medical, Dental, Life, Retirement

Posted 26 days ago

Job description

Job Description
About Us:
RKS has been at the forefront of Industrial Design in the United States for the last 40 years. We have built a reputation for delivering full-spectrum product design and development services-creating meaningful innovation across industries, from medical devices and consumer electronics to wearables and home goods. Our cross-functional approach integrates design, engineering, and human-centered thinking to produce award-winning products that drive emotional connection and market success.
Job Summary:
We are seeking a highly skilled and experienced Electronics Engineer to consult on a freelance basis with our interdisciplinary team. This role requires a hands-on, systems-level thinker who can architect and implement electronic subsystems within a variety of product categories. The ideal candidate will collaborate closely with mechanical, software, and industrial design teams to develop elegant, functional, and manufacturable products from concept through prototyping.
Key Responsibilities:
  • Design and develop electronic systems for consumer, medical, and industrial products.
  • Create schematics, select components, and develop PCB layouts using tools such as Altium or Eagle.
  • Develop, debug, and test analog and digital circuits including micro-controllers, power supplies, sensors, and wireless modules.
  • Build and program proof-of-concept electronics prototypes (e.g., Arduino, Raspberry Pi, custom boards).
  • Work with mechanical engineers to ensure seamless integration of electronics into the physical product design.
  • Collaborate with firmware and software developers to ensure hardware compatibility and performance.
  • Perform troubleshooting, testing, and debugging of hardware systems throughout the development lifecycle.
  • Contribute to documentation for design intent, testing procedures, compliance, and production hand-off.
  • Provide insight into design-for-manufacturing (DFM), regulatory compliance, and BOM cost optimization.
  • Participate in brainstorming sessions, technical reviews, and product refinement workshops.
  • Stay abreast of emerging technologies and component innovations relevant to product development.

Requirements
Qualifications:
  • Bachelor's degree in Electrical Engineering, Electronics Engineering, or a related discipline; Master's degree is a plus.
  • 5+ years of hands-on experience designing electronics for commercial or industrial products.
  • Proficiency with electronic design tools (Altium Designer, Eagle, KiCad, or similar).
  • Strong understanding of micro-controller systems, low-power design, sensor integration, and communication protocols (I2C, SPI, UART, BLE).
  • Experience with embedded systems and basic firmware development is preferred.
  • Ability to rapidly prototype and iterate on electronic subsystems.
  • Excellent problem-solving, communication, and collaboration skills.
  • Knowledge of safety, EMI/EMC, and regulatory standards (FCC, CE, IEC, ISO 60601, etc.) is a strong advantage.

Preferred Qualifications:
  • Experience in client-facing or cross-disciplinary team environments.
  • Prior consulting or agency-based product development experience.
  • Familiarity with medical device development cycles and documentation practices is a plus.

Benefits
  • Medical Insurance
  • Dental Insurance
  • Paid Holidays
  • 401(k) as defined in the employee handbook
  • Sick Leave
  • Vacation

Let me know if you'd like this adapted for a full-time role, revised for a specific sector (e.g., wearables, medical), or turned into a formatted PDF or job board post.
You said:
10 years exp, no benefits
ChatGPT said:
Here is the revised Electronics Engineer job posting reflecting 5+ years of experience and no benefits, suitable for a freelance/contract role:
Job Description
About Us:
RKS has been a leader in Industrial Design for over 40 years, delivering innovation that transforms everyday life across industries-from medical devices and consumer electronics to mobility solutions and lifestyle products. Our multidisciplinary team combines creativity, engineering, and human-centered thinking to produce emotionally resonant, market-winning designs.
Job Summary:
We are looking for a highly experienced Freelance Electronics Engineer to consult with our product development team on a project-by-project basis. This role is ideal for a senior-level engineer with 10+ years of experience who can independently lead the design and integration of electronic systems across a range of complex product categories. You will collaborate with mechanical, firmware, and industrial designers to create fully integrated, production-ready solutions.
Key Responsibilities:
  • Lead the design, development, and testing of electronic hardware for consumer, medical, and industrial products.
  • Develop circuit schematics, select components, and design PCB layouts using tools like Altium, Eagle, or KiCad.
  • Build and program hardware prototypes using micro-controller platforms such as Arduino, STM32, or Raspberry Pi.
  • Collaborate with mechanical and firmware teams to ensure tight system integration and reliable operation.
  • Define electrical architecture, power budgets, and communication protocols (e.g., I2C, SPI, BLE, USB).
  • Troubleshoot and debug circuits across development stages-from bread-boarding to final PCBA.
  • Evaluate and specify off-the-shelf components, sensors, and modules to meet performance, cost, and compliance targets.
  • Prepare documentation including BOMs, test reports, and production handoff materials.
  • Advise on design for manufacturability (DFM), regulatory compliance, and lifecycle risk.
  • Contribute to design reviews and help drive technical decision-making across projects.

Requirements
Qualifications:
  • Bachelor'sdegree in Electromechanical Engineering, Electrical Engineering, or arelated field; a Master's degree is a plus.
  • Provenexperience in designing and integrating electronics into mechanicalsystems.
  • Proficiencyin CAD software (e.g., SolidWorks, AutoCAD) and electronic designautomation (EDA) tools (e.g., Altium SW, Eagle).
  • Strongunderstanding of circuit design, micro-controllers, sensors, and actuators.
  • Experiencewith embedded systems and firmware development is a plus.
  • Excellentproblem-solving skills and attention to detail.
  • Strongcommunication and teamwork abilities.
  • Abilityto manage multiple projects and meet deadlines.
  • Familiaritywith regulatory standards and certification processes for consumer,medical, and industrial products.

PREFERRED QUALIFICATIONS
  • Client-facing,project management experience is highly preferred
  • Consulting/ Agency experience is highly preferred
  • Experiencewith medical product development a plus

Benefits
Benefits
  • MedicalInsurance
  • DentalInsurance
  • Paidholidays
  • 401 Kas defined in the employee handbook
  • Sickleave
  • Vacation

Apply