Top 168 Writing Jobs in Ontario Ca

Marketing Data Scientist - AI Trainer
DataAnnotation —Pomona, CA
- $40 - $60 an hour
- Part-time
- Remote
- Computer Science
- English
- Mid-level
- Flexible schedule
Quick Apply
Law Clerk (Legal Writer and Researcher) for Family Law Firm
Law Offices —Rancho Cucamonga, CA
- $16.50 - $25.00 an hour
- Full-time
- Spanish
- Computer literacy
- Writing skills
- Health insurance
- Dental insurance
Quick Apply
California Based Federal & State Grant Writer – Municipal Clients (1–3 Years Experience)
Blais & Associates —California
- From $25 an hour
- Part-time
- Remote
- Microsoft Excel
- Microsoft Outlook
- Research
- 401(k)
- 401(k) matching
Quick Apply
E-commerce Product Content Specialist
Bayland Health —Montclair, CA
- $50,000 - $55,000 a year
- Full-time
- Marketing
- English
- Mid-level
- Paid holidays
- Health insurance
Quick Apply
Media Outreach Specialist (Upland)
REACH OUT WEST END INC —Upland, CA
- $24.16 an hour
- Weekends as needed
- Spanish
- Basic math
- English
- Health insurance
- Dental insurance
Customs Entry Writer
Unipac Shipping —Pomona, CA
- $21 - $28 an hour
- Full-time
- Background check
- Customer service
- English
- Health insurance
- Dental insurance
Quick Apply
Grants Writer
Neighborhood Healthcare —Riverside, CA
- $73,500 - $104,400 a year
- Full-time
- Hybrid work
- Research
- Mid-level
- Master's degree
- Health insurance
- Dental insurance
Quick Apply
International Education, International Admissions/Writing & Content Development - Federal Work Study Student Assistant
California State University —San Bernardino, CA
- Part-time
- Background check
- Google Workspace
- English
13d
Copywriter
Ardmore Home Design —City of Industry, CA
- $70,000 - $80,000 a year
- Marketing
- Ability to walk for extended periods
- Mid-level
- Paid holidays
- Paid time off
Quick Apply
Marketing Assistant
Calico Brands, Inc. —Ontario, CA
- $20 an hour
- Full-time
- Microsoft PowerPoint
- Microsoft Excel
- Microsoft Outlook
- Health insurance
- Dental insurance
Quick Apply
GRANT WRITER
WALDEN FAMILY —Riverside, CA
- $70,000 - $80,000 a year
- Full-time
- Hybrid work
- Research
- Office
- Master's degree
Quick Apply
4d
Athletic Communications Assistant
Claremont McKenna College —Claremont, CA
- $19 - $21 an hour
- Weekends as needed
- Background check
- Microsoft Excel
- Microsoft Outlook
- Health savings account
- Paid holidays
Reading and Writing Tutor
World of Writing Inc. —Arcadia, CA
- $26 - $30 an hour
- Part-time
- Background check
- Writing skills
- Working with children
- Flexible schedule
Quick Apply
Marketing & Communications Specialist
Office Master, Inc. —Ontario, CA
- $32 - $37 an hour
- Full-time
- Marketing
- English
- Research
- Paid holidays
- Health insurance
Quick Apply
Web Content Strategy Writer
Loma Linda University Health —Loma Linda, CA
- $32.25 - $43.38 an hour
- Full-time
- Microsoft Outlook
- Marketing
- 5 years
Social Media Coordinator
Cal Spas —Pomona, CA
- From $27 an hour
- Full-time
- Social media management
- Writing skills
- Organizational skills
- Health insurance
- Dental insurance
Quick Apply
5d
Marketing & Communications Coordinator
East Valley Community Health Center —Pomona, CA
- $25.50 - $30.11 an hour
- Spanish
- Marketing
- Customer service
- Paid holidays
- Health insurance
Quick Apply
Creative Writing Teacher
Sounds of Color Studio —Santa Ana, CA
- From $25 an hour
- Part-time
- Background check
- Classroom
- English
Quick Apply
Admissions Communication Specialist
California Baptist University —Riverside, CA
- English
- Mid-level
- Office
Editorial Content Producer
Claremont McKenna College —Claremont, CA
- $70,304 - $71,000 a year
- Weekends as needed
- Background check
- Microsoft Excel
- Microsoft Outlook
- Health savings account
- Paid holidays

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writing jobs near ontario ca

Marketing Data Scientist - AI Trainer

DataAnnotation -
Pomona, CA

Quick Apply

Job Details

Part-time | Full-time | Contract
$40 - $60 an hour

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 Marketing 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, up to $60 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:

2+ 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 is preferred (Statistics, Computer Science, Mathematics, Engineering, or similar); a 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

writing jobs in ontario ca

Marketing Data Scientist - AI Trainer

Law Clerk (Legal Writer and Researcher) for Family Law Firm

California Based Federal & State Grant Writer – Municipal Clients (1–3 Years Experience)

E-commerce Product Content Specialist

Media Outreach Specialist (Upland)

Customs Entry Writer

Grants Writer

International Education, International Admissions/Writing & Content Development - Federal Work Study Student Assistant

Copywriter

Marketing Assistant

GRANT WRITER

Athletic Communications Assistant

Reading and Writing Tutor

Marketing & Communications Specialist

Web Content Strategy Writer

Social Media Coordinator

Marketing & Communications Coordinator

Creative Writing Teacher

Admissions Communication Specialist

Editorial Content Producer

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