Top 2827 Data scientist Jobs in California

Principal Data Scientist - AI Trainer
DataAnnotation —Windsor, CA
- $50.00 - $140.56 an hour
- Part-time
- Remote
- Computer Science
- English
- 3 years
- Flexible schedule
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8d
Senior Research Scientist - AI Trainer
DataAnnotation —London, CA
- $50.00 - $140.56 an hour
- Part-time
- Remote
- Computer Science
- English
- 3 years
- Flexible schedule
Quick Apply
8d
Data Scientist
Federato Technologies —San Francisco, CA
- $160,000 - $200,000 a year
- Mid-level
- Doctor of Philosophy
- 2 years
Quick Apply
Digital Marketing Data Scientist
Alten Calsoft Labs —Palo Alto, CA
- Contract
- Mid-level
- SQL
- Analysis skills
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Data Scientist
EVgo —Los Angeles, CA
- $100,700 - $125,900 a year
- Full-time
- Remote
- Mid-level
- SQL
- Bachelor's degree
- Commuter assistance
- Health savings account
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Data Scientist
REVOLVE —Cerritos, CA
- $90,000 - $120,000 a year
- Full-time
- Computer science
- Mid-level
- 3 years
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Data Scientist
University of California San Francisco —San Francisco, CA
- Full-time
- Azure
- Computer Science
- Mid-level
Quantitative Psychologist - AI Trainer
DataAnnotation —San Francisco Bay Area, CA
- $50 - $100 an hour
- Part-time
- Remote
- Computer Science
- Writing skills
- English
- Flexible schedule
Quick Apply
4d
Quantitative Analyst - AI Trainer
DataAnnotation —San Francisco Bay Area, CA
- $50 - $100 an hour
- Part-time
- Remote
- Computer Science
- Writing skills
- English
- Flexible schedule
Quick Apply
4d
Palantir Data Scientist (Onsite Vandenberg, CA)
Accenture Federal Services —Vandenberg AFB, CA
- $86,400 - $176,200 a year
- 5 years
- Bachelor's degree
- US work authorization
Lead, AI Engineering
Bain & Co. —Los Angeles, CA
- $203,500 a year
- Full-time
- System design
- Office
- Continuous improvement
- Wellness program
- Paid holidays
Quick Apply
Lead, AI Engineering
Bain & Co. —San Francisco, CA
- $203,500 a year
- Full-time
- System design
- Office
- Continuous improvement
- Wellness program
- Paid holidays
Quick Apply
Senior AI Engineer
Flex Employee Services —Irvine, CA
- $47 - $51 an hour
- Contract
- Background check
- Computer Science
- 5 years
- Health insurance
- Dental insurance
Quick Apply
8d
GENAI / MACHINE LEARNING AI / DATA Scientist
Hudson Manpower —Irvine, CA
- Full-time
- Remote
- Senior level
Quick Apply
Expert Consultant, Coro, AI Engineer
Bain & Co. —San Francisco, CA
- $128,500 - $171,500 a year
- Full-time
- Computer science
- Azure
- Computer Science
- Wellness program
- Paid holidays
Quick Apply
GENAI / MACHINE LEARNING AI / DATA Scientist
Hudson Manpower —Sacramento, CA
- Full-time
- Remote
- Senior level
Quick Apply
Senior Data Scientist
ServiceNow —Mountain View, CA
- $161,300 - $274,200 a year
- Online Application
- Computer Science
- 5 years
- System design
Quick Apply
Senior Marketing Data Analyst
Strand Marketing —Hermosa Beach, CA
- $120,000 - $160,000 a year
- Full-time
- Hybrid work
- Background check
- 7 years
- Office
- Health insurance
- Dental insurance
Quick Apply
Data Scientist / Computer Vision Engineer
Glint Tech Solutions LLC —Sunnyvale, CA
- Azure
- System design
- AWS
Quick Apply
AWS AI Engineer / USC and GC Candidates can ONLY Apply
Hudson Manpower —Sacramento, CA
- Full-time
- Remote
- 7 years
- System design
- English
- Profit sharing
- Paid training
Quick Apply

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data scientist jobs near california

Principal Data Scientist - AI Trainer

DataAnnotation -
Windsor, CA

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Job Details

Part-time | Full-time | Contract
$50.00 - $140.56 an hour
8 days ago

Benefits

Flexible schedule

Qualifications

Software coding
Design of experiments
English
Providing code feedback

Full Job Description

DataAnnotation is committed to creating quality AI. Help train AI chatbots while gaining the flexibility of remote work and choosing your own schedule.

We are looking for an existing Principal Data Scientist - AI Trainer to help train AI models. AI models are increasingly capable of performing complex analytical and scientific reasoning — but these systems still need practitioners with real-world quantitative experience to validate whether the outputs actually hold up in practice. That's where you come in.

You'll work closely with state-of-the-art AI models on tasks like evaluating AI-generated quantitative analysis, solving technical problems, and providing feedback that directly shapes how these systems reason about data, models, and scientific problems. Whether your background is in data science, astrophysics, economics, biostatistics, operations research, or any other quantitative field, if you think rigorously about data and models, your skills are directly applicable here. You can fit this work alongside a full-time role, or treat it as your primary focus, choosing projects and schedules that align with your availability and goals.

To get started, once you sign up for an account, you'll take a short assessment (this serves as our version of an interview). If you pass, you'll receive an email confirmation, and paid work will become available on our platform.

Advantages of contracting with us:

Fully remote: work from anywhere in the US, Canada, UK, Ireland, Australia, and New Zealand.
Flexible schedule: choose which projects you take on and when you work, on your own computer, from the comfort of your own home.
Competitive pay: projects are paid hourly at $50 to $100 USD per hour, with bonus rates available on some projects.
Impact: help shape the future of AI systems built to reason about data and analytics.

Responsibilities:

Evaluate AI-generated quantitative work, including statistical analysis, predictive modeling, scientific reasoning, and data-driven insights, for technical accuracy and real-world validity.
Design and solve quantitative problems used to train and benchmark AI systems, spanning areas like forecasting, experimental analysis, optimization, and statistical inference.
Write clear technical explanations and well-documented analytical code.
Provide feedback that directly shapes the next generation of AI models built for quantitative reasoning.

Qualifications:

3+ years of hands-on experience in a quantitative role or research environment — such as data science, statistics, economics, finance, physics, biology, epidemiology, operations research, or any adjacent field.
Some coding experience required, with comfort writing and reviewing analytical code end-to-end.
Practical experience with statistical methods, predictive modeling, and experiment design (e.g., A/B testing, hypothesis testing, regression, classification, time-series forecasting).
Fluency in English (native or bilingual level) with strong writing skills.
A bachelor's degree in a quantitative field preferred (Statistics, Computer Science, Mathematics, Engineering, or similar); an advanced degree (Master’s or PhD) is a plus.
Relevant credentials are a plus (e.g., Kaggle Competition ranking, AWS/GCP ML certifications, or equivalent demonstrated expertise).

Note: Payment is made via PayPal. We will never ask for any money from you. This job is only available to those in the US, Canada, UK, Ireland, Australia, and New Zealand.

Quick Apply

Refine Your Search

data scientist jobs in california

Principal Data Scientist - AI Trainer

Senior Research Scientist - AI Trainer

Data Scientist

Digital Marketing Data Scientist

Data Scientist

Data Scientist

Data Scientist

Quantitative Psychologist - AI Trainer

Quantitative Analyst - AI Trainer

Palantir Data Scientist (Onsite Vandenberg, CA)

Lead, AI Engineering

Lead, AI Engineering

Senior AI Engineer

GENAI / MACHINE LEARNING AI / DATA Scientist

Expert Consultant, Coro, AI Engineer

GENAI / MACHINE LEARNING AI / DATA Scientist

Senior Data Scientist

Senior Marketing Data Analyst

Data Scientist / Computer Vision Engineer

AWS AI Engineer / USC and GC Candidates can ONLY Apply

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