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Freelance Data Science Jobs in California (NOW HIRING)

ZO Skin Health, Inc.

VP - Global Creative

Irvine, CA · On-site

... scientific accuracy and brand consistency. * Manage relationships with external agencies, production partners, and freelance creative talent. Digital-First Content Creation * Lead development of ...

ZO Skin Health, Inc

VP - Global Creative

Irvine, CA

... scientific accuracy and brand consistency. * Manage relationships with external agencies, production partners, and freelance creative talent. Digital-First Content Creation * Lead development of ...

Revance

Sales and Education Executive

Pasadena, CA · On-site

$70K/yr

Plan and manage freelance and travel & entertainment (T&E) expenses within the limits of the ... based on historical data, promotional anniversaries, and prior-year activities. Basic ...

Revance

Sales and Education Executive

Pasadena, CA

$70K/yr

Plan and manage freelance and travel & entertainment (T&E) expenses within the limits of the ... based on historical data, promotional anniversaries, and prior-year activities. Basic ...

Mindgruve

SEO Manager

San Diego, CA · On-site +1

$7.5K - $85K/mo

We are a global digital agency comprised of strategists, creatives, media experts, data scientists ... agency + freelance/consulting) * Demonstrated expertise in technical SEO: auditing, internal ...

AKQA

Senior Designer

San Francisco, CA · On-site

$120K - $128K/yr

At AKQA (part of WPP), we believe in the imaginative application of art and science to create ... We are seeking an experienced Freelance Senior Designer to support one of the most globally ...

AKQA

Senior Designer

San Francisco, CA · Hybrid

$120K - $128K/yr

At AKQA (part of WPP), we believe in the imaginative application of art and science to create ... We are seeking an experienced Freelance Senior Designer to support one of the most globally ...

23andme

Senior Brand Designer

Palo Alto, CA · On-site

... data visualization that translates complex science into something people want to engage with ... When needed, brief, hire, and steer external design and video agencies and freelancers. Set the ...

23andMe

Senior Brand Designer

Palo Alto, CA · On-site

... data visualization that translates complex science into something people want to engage with ... When needed, brief, hire, and steer external design and video agencies and freelancers. Set the ...

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Freelance Data Science information

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$37K

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How much do freelance data science jobs pay per year?

As of Aug 9, 2026, the average yearly pay for freelance data science in California is $121,131.00, according to ZipRecruiter salary data. Most workers in this role earn between $97,200.00 and $134,200.00 per year, depending on experience, location, and employer.

What are the key skills and qualifications needed to thrive as a freelance data scientist?

To thrive as a Freelance Data Scientist, you need strong proficiency in statistics, programming (commonly Python or R), and data analysis, often backed by a degree in a quantitative field or relevant certifications. Mastery of tools like Jupyter Notebook, SQL, machine learning libraries (e.g., scikit-learn, TensorFlow), and experience with cloud platforms are typically required. Excellent communication, self-motivation, and time management skills set successful freelancers apart by enabling effective client collaboration and project delivery. These abilities ensure you can independently deliver actionable insights and solutions that meet diverse client needs in a competitive market.

What is a freelance data scientist?

Freelance data scientists are independent professionals who analyze, interpret, and extract insights from data for clients on a project or contract basis, rather than working as full-time employees for a single organization. They leverage skills in statistics, programming, and machine learning to solve business problems, build predictive models, and visualize data. Freelance data scientists often work with multiple clients across various industries, providing flexibility and the ability to specialize in different types of data projects. Their work may include tasks such as data cleaning, exploratory data analysis, algorithm development, and reporting findings to stakeholders.

What is the difference between Freelance Data Science vs Data Analyst?

AspectFreelance Data ScienceData Analyst
CredentialsTypically requires a degree in data science, statistics, or related fields; certifications like CAP or Microsoft Data AnalystOften requires a degree in statistics, mathematics, or related fields; certifications like Microsoft Data Analyst or Tableau
Work EnvironmentIndependent, project-based, remote or on-siteUsually employed within organizations, working in teams or departments
Employer & Industry UsageFreelance data science projects across various industries like tech, finance, healthcareIn-house roles in industries such as finance, marketing, healthcare, and retail

Freelance Data Science involves independent, project-based work requiring advanced skills in machine learning, programming, and statistical analysis. Data Analysts typically focus on interpreting existing data, creating reports, and visualizations within organizations. While both roles require strong analytical skills, freelance data scientists often handle more complex modeling tasks, whereas data analysts focus on data interpretation and reporting.

What are the most common challenges faced by freelance data scientists when working with clients remotely?

Freelance data scientists often encounter challenges such as unclear project scopes, varying data quality, and communication gaps when collaborating remotely with clients. It's essential to establish clear expectations, maintain regular updates, and set milestones to ensure both parties are aligned throughout the project. Additionally, freelancers may need to adapt to different tools or platforms based on each client's preferences, requiring flexibility and strong self-management skills. Building trust and delivering insights in a clear, actionable manner can help foster long-term client relationships.
What are the most commonly searched types of Data Science jobs in California? The most popular types of Data Science jobs in California are:
What are popular job titles related to Freelance Data Science jobs in California? For Freelance Data Science jobs in California, the most frequently searched job titles are:
What job categories do people searching Freelance Data Science jobs in California look for? The top searched job categories for Freelance Data Science jobs in California are:
What cities in California are hiring for Freelance Data Science jobs? Cities in California with the most Freelance Data Science job openings:
Freelance Data Science jobs near you
Infographic showing various Freelance Data Science job openings in California as of August 2026, with employment types broken down into 1% As Needed, 73% Full Time, 21% Part Time, 2% Temporary, and 3% Contract. Highlights an 87% Physical, 3% Hybrid, and 10% Remote job distribution, with an average salary of $121,131 per year, or $58.2 per hour.

Marketing Associate

Radical Numerics, Inc

San Francisco, CA • On-site

Full-time

Re-posted 16 days ago

Job description

About Us
Radical Numerics is an AI research lab building general biological intelligence. Our mission is to master the code of life, and our purpose is to reduce human suffering.
Our team created Evo, and started the field of generative genomics. Our work was featured on the cover of Science, and presented by our CEO on the main stage of TED2025. Evo was used to create the first AI gene therapy tool CRISPR-Cas9, and the first AI whole genome from scratch. Evo 2, featured in Nature, is the largest fully open source AI project across any domain.
Radical Numerics is bringing the rigor of distributed systems, model architecture, and numerics research to the challenges of biology. We've redesigned the foundation model training stack to turn the world's raw scientific data (e.g. biological sequences, experiments, and physical processes), into intelligible, generative models that can expand and accelerate what humanity can understand, design, and cure.
The same generative breakthroughs that enable life-saving cures also lowers the barrier to creating engineered threats and AI-generated bioweapons. We believe these forces are inseparable. Radical Numerics was founded to develop both the power to design and the responsibility to defend.
About the Role
Radical Numerics is looking for a Marketing Associate to help build and scale our marketing function. As our first dedicated marketing hire, you'll own the execution of our marketing and communications initiatives, turning complex technical work into clear, compelling stories for customers, partners, and the broader scientific community.
You'll help drive projects from concept through execution, including our website, technical videos, product content, educational explainers, conference materials, and digital campaigns. You'll coordinate cross-functional efforts across the company, working closely with our researchers and engineers to translate cutting-edge research into impactful marketing, while managing external agencies and creative partners as needed.
This is a hands-on role at a fast-moving startup where you'll have significant ownership and broad responsibility from day one. Success will come from strong judgment, resourcefulness, and a bias toward action. If you enjoy bringing structure to ambiguity, juggling multiple priorities, and delivering high-quality work across a wide range of marketing initiatives, you'll thrive in this role.
What You'll Do
Project and Vendor Management
  • Drive execution of major marketing projects, e.g.,website design, company videos.
  • Source, brief, and manage specialized vendors and freelancers (designers, video producers, developers) for work that's better built externally
  • Coordinate with production vendors like Draftspace using the same model as our last release: the internal team writes the content, you manage the process, timeline, and vendor relationship to get it produced and shipped
  • Track timelines, budgets, and deliverables across multiple concurrent workstreams

Content and Campaigns
  • Coordinate video projects - from company vision to technical explainers - pairing internal researchers and engineers on content with outside vendors on production
  • Partner with the technical team, who write the substance of technical and research-adjacent content; you shape it for the audience, manage production, and help to get it published
  • Own execution of Radical Numerics' social and web presence with a consistent voice
  • Support demand generation across email, content, and events

Event and Marketing Ops
  • Plan and execute Radical Numerics' presence at scientific conferences, industry events, and government forums, coordinating logistics, messaging, and post-event follow-up to maximize impact.
  • Manage event timelines, vendors, and cross-functional stakeholders to ensure high-quality execution from planning through completion.
  • Use modern marketing automation, CRM, and analytics tools to streamline workflows, measure performance, and maximize the impact of a lean marketing team.
  • Build and improve scalable marketing operations processes that enable efficient campaign execution and data-driven decision-making.

What we're looking for
  • Comfortable sourcing, briefing, and managing external vendors and freelancers
  • Strong project management instincts - you keep multiple moving pieces on track without needing much oversight
  • Comfortable working alongside technical and scientific teams - you don't need to be the primary writer of technical content, but you know how to shape and shepherd it
  • Scrappy and startup-paced: high ownership, low ego, comfortable wearing many hats and figuring things out as you go.
  • High ownership, low ego, and a bias toward action in ambiguous environments
  • Genuinely curious about biological AI, biosecurity, or the life sciences
  • 2+ years in marketing, communications, or a related role, ideally at a startup or fast-moving company

Radical Numerics is committed to equal employment opportunity and does not discriminate in any employment opportunities or practices based on an individual's race, color, creed, gender (including gender identity and gender expression), religion (all aspects of religious beliefs, observance or practice, including religious dress or grooming practices), marital status, registered domestic partner status, age, national origin or ancestry (including language use restrictions and possession of a driver's license issued under California Vehicle Code section 12801.9), natural hair, physical or mental disability, political affiliation, medical condition (including cancer or a record or history of cancer, and genetic characteristics), sex (including pregnancy, childbirth, breastfeeding or related medical condition), genetic information, sexual orientation, military and veteran status or any other consideration made unlawful by federal, state, or local laws. It also prohibits unlawful discrimination based on the perception that anyone has any of those characteristics, or is associated with a person who has or is perceived as having any of those characteristics.
Radical Numerics participates in E-Verify and will provide the federal government with your Form I-9 information to confirm that you are authorized to work in the U.S.

Apply