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Freelance Process Engineer Jobs in California (NOW HIRING)

AKQA

Freelance Senior Copywriter

San Francisco, CA

$2.6K - $3.4K/wk

We are seeking a talented Freelance Senior Copywriter to support one of the most globally ... engineers to ensure copy and experience are working together at every stage of the process

AKQA

Freelance Senior Copywriter

San Francisco, CA · On-site

$2.6K - $3.4K/wk

We are seeking a talented Freelance Senior Copywriter to support one of the most globally ... engineers to ensure copy and experience are working together at every stage of the process

AKQA

Freelance Senior Product Designer

San Francisco, CA · Remote

$2.8K - $3.6K/wk

Define consumers, processes, and ideas from an objective point of view grounded in research and ... Expertise in cross-functional collaboration across design, product, strategy, and engineering

AKQA

Freelance Senior Product Designer

San Francisco, CA · On-site

$2.8K - $3.6K/wk

Define consumers, processes, and ideas from an objective point of view grounded in research and ... Expertise in cross-functional collaboration across design, product, strategy, and engineering

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All JobsProcess Engineer JobsFreelance Process Engineer JobsFreelance Process Engineer Jobs in California

Freelance Process Engineer information

See California salary details

$48.9K

$90.8K

$140.6K

How much do freelance process engineer jobs pay per year?

As of Jul 6, 2026, the average yearly pay for freelance process engineer in California is $90,813.00, according to ZipRecruiter salary data. Most workers in this role earn between $73,500.00 and $101,700.00 per year, depending on experience, location, and employer.

What is the difference between Freelance Process Engineer vs Process Engineer?

AspectFreelance Process EngineerProcess Engineer
CredentialsRelevant engineering degree, certifications optionalEngineering degree, professional certifications often preferred
Work EnvironmentIndependent, project-based, remote or on-siteFull-time, employed by a company, on-site or hybrid
Employer & Industry UsageClients across industries, contract-basedManufacturing, chemical, or industrial firms
Search & Comparison IntentFreelance Process Engineer vs Process EngineerFreelance Process Engineer vs Process Engineer

While both roles focus on optimizing processes, a Freelance Process Engineer works independently on various client projects, often remotely, and may lack the full-time employment benefits. A Process Engineer is typically employed full-time within a company, focusing on ongoing process improvements in a specific industry. The choice depends on your preference for independence versus stability.

What is a Freelance Process Engineer?

A Freelance Process Engineer is a professional who designs, optimizes, and troubleshoots industrial processes on a contract or project basis, rather than as a full-time employee. They work with companies in industries like manufacturing, pharmaceuticals, or energy to improve efficiency, safety, and productivity. Freelance Process Engineers often handle multiple clients, offering flexibility and specialized expertise for short-term or ongoing projects. They may be involved in process design, simulation, equipment selection, or regulatory compliance.

How do Freelance Process Engineers typically collaborate with client teams during projects?

Freelance Process Engineers often work closely with client teams by participating in regular virtual meetings, providing detailed progress updates, and integrating feedback to ensure alignment with project goals. Effective collaboration may require adapting to different communication styles and project management tools used by various organizations. Building strong professional relationships and being proactive in clarifying expectations are key to overcoming challenges such as remote integration and limited onsite presence. This collaborative approach helps ensure successful project delivery and client satisfaction.

What engineers make $500,000 a year?

Highly experienced engineers in specialized fields such as petroleum engineering, aerospace engineering, or senior software engineering roles can earn $500,000 or more annually, often through a combination of base salary, bonuses, and stock options. These positions typically require advanced skills, extensive experience, and often involve leadership or executive responsibilities.

What engineers make $300,000 a year?

Senior engineers in specialized fields such as petroleum, aerospace, or software engineering can earn $300,000 or more annually, especially with extensive experience, advanced skills, and leadership roles. High-paying engineering positions often require advanced degrees, professional certifications, and work in high-demand industries or companies.

What engineers make $200,000 a year?

Senior engineers in specialized fields such as petroleum, aerospace, or software engineering often earn $200,000 or more annually, especially with extensive experience, advanced skills, and relevant certifications. Roles in management or with significant technical expertise and leadership responsibilities can also reach or exceed this salary level.

What other jobs can a process engineer do?

A process engineer can transition into roles such as manufacturing engineer, quality engineer, operations manager, or project engineer, leveraging skills in process optimization, problem-solving, and data analysis. They may also work in supply chain management, automation, or consulting, often requiring knowledge of industry-specific tools and certifications like Six Sigma or Lean methodologies.

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

To thrive as a Freelance Process Engineer, a strong background in chemical or mechanical engineering, process optimization, and project management, often supported by a relevant engineering degree and professional certification, is essential. Familiarity with industry-standard tools such as AutoCAD, Aspen HYSYS, and process simulation software is typically required. Exceptional problem-solving, communication, and client management skills help freelancers stand out by effectively addressing client needs and adapting to diverse projects. These abilities enable the engineer to deliver efficient solutions, ensure client satisfaction, and maintain a competitive edge in the freelance marketplace.
What are the most commonly searched types of Process Engineer jobs in California? The most popular types of Process Engineer jobs in California are:
What are popular job titles related to Freelance Process Engineer jobs in California? For Freelance Process Engineer jobs in California, the most frequently searched job titles are:
What job categories do people searching Freelance Process Engineer jobs in California look for? The top searched job categories for Freelance Process Engineer jobs in California are:
What cities in California are hiring for Freelance Process Engineer jobs? Cities in California with the most Freelance Process Engineer job openings:
Freelance Process Engineer jobs near you
Infographic showing various Freelance Process Engineer job openings in California as of July 2026, with employment types broken down into 2% Locum Tenens, 90% Full Time, 4% Part Time, 1% Temporary, and 3% Contract. Highlights an 87% Physical, 4% Hybrid, and 9% Remote job distribution, with an average salary of $90,813 per year, or $43.7 per hour.
Electromechanical Engineer / Freelance

Electromechanical Engineer / Freelance

RKS Design, Inc.

Westlake Village, CA • On-site

Contractor

Medical

Posted 23 days ago

Job description


About Us: RKS has been at the forefront of Industrial Design in the United States for the last 40 years. We have crafted a reputation for our complete product design and development service; bringing innovation that enhances every-day lives across all market sectors, from sporting goods to dental devices, from wearables to household appliances. Our approach puts innovation, engineering, and user experience at the center of our process, creating ground-breaking products that users bond with and clients keep coming back for.
Job Summary: We are seeking a talented and experienced Electromechanical Engineer to consult on a freelance basis with our dynamic team. The ideal candidate will have a strong background in integrating electronics into product designs, working seamlessly with mechanical and software engineers to develop robust, high-quality products. This role requires a creative problem solver with the ability to explore different technical approaches, balancing usability, cost, and safety.
Key Responsibilities:
  • Design,develop, and test electro-mechanical systems and components for consumer,medical, and industrial products.
  • Integrateelectronic hardware with mechanical designs, ensuring seamlessfunctionality and performance.
  • Collaboratewith cross-functional teams including mechanical engineers, softwaredevelopers, and industrial designers to create cohesive and innovativeproduct solutions.
  • Abilityto develop / program Arduino prototypes of in development projects
  • Driveand explore different solution sets with various technical approaches,balancing usability, cost, and safety considerations.
  • Conductfeasibility studies, risk assessments, and cost estimations for newprojects.
  • Developand maintain technical documentation, including schematics, PCB layouts,and assembly instructions.
  • Performtroubleshooting, debugging, and optimization of electro-mechanical systems.
  • Staycurrent with industry trends, emerging technologies, and best practices inelectro-mechanical engineering.
  • Participatein design reviews, providing constructive feedback and suggestions forimprovement.
  • Ensurecompliance with relevant regulatory standards and guidelines.

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

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