Top 60 Senior data Jobs in Ontario, Ca

Senior Data Scientist - AI Trainer
DataAnnotation —California
- $50 - $100 an hour
- Part-time
- Remote
- Computer Science
- English
- 3 years
- Flexible schedule
Quick Apply
13d
Senior Quantitative Analyst - AI Trainer
DataAnnotation —California
- $50 - $100 an hour
- Part-time
- Remote
- Computer Science
- English
- Mid-level
- Flexible schedule
Quick Apply
13d
Senior Research Data Analyst
University of California, Riverside —Riverside, CA
- $84,100 - $159,400 a year
- Full-time
- ERP systems
- Mid-level
- SQL
Senior Data Analyst
PM2CM —Pomona, CA
- $105,000 - $115,000 a year
- Full-time
- Hybrid work
- Computer Science
- Office
- Analysis skills
- Health insurance
Quick Apply
Senior Data Analyst
Forward Financing —Ontario, CA
- $114,000 - $144,000 a year
- Full-time
- Computer Science
- Salesforce
- SQL
- Paid parental leave
- Health insurance
Senior Data Team Lead (Remote)
IQVIA —Anaheim, CA
- $86,800 - $217,100 a year
- Full-time
- Remote
- 7 years
- Bachelor's degree
- Continuous improvement
- Health insurance
- Dental insurance
Senior Business Analyst – Data & Analytics
Perimeter Solutions LP —Rancho Cucamonga, CA
- $92,000 - $112,000 a year
- Full-time
- Computer Science
- ERP systems
- Finance
- Health savings account
- Paid holidays
Quick Apply
Senior Data Engineering & Analytics Lead
PM2CM —Pomona, CA
- $125,000 - $130,000 a year
- Full-time
- Remote
- 7 years
- Computer Science
- SQL
- Profit sharing
- Health insurance
Quick Apply
(Microsoft Fabric & Ontologies) - Senior Data lead / architect
Emcube Technlogy —Corona, CA
- $55 - $80 an hour
- Full-time
- 8 years
- Machine learning
- Travel
Quick Apply
Sr Product Analyst
AERIES SOFTWARE LLC —Orange, CA
- $110,000 - $130,000 a year
- Full-time
- Remote
- Computer Science
- Writing skills
- Data analysis skills
- Paid jury duty
- Health savings account
5d
Senior Specialist - Data Engineering
LTIMindtree —Irvine, CA
- $103,415 - $152,000 a year
- System design
- SQL
- AWS
- Paid parental leave
- Paid holidays
Quick Apply
Senior Manager, Clinical Data Management
JENAVALVE TECHNOLOGY INC —Irvine, CA
- $175,000 a year
- Full-time
- Remote
- 7 years
- Analysis skills
- Bachelor's degree
Quick Apply
SENIOR SQL SERVER DATABASE DEVELOPER / DATA ENGINEER
VSolvit —Norco, CA
- $150,000 - $190,000 a year
- Computer science
- Computer Science
- 8 years
- Health savings account
- Disability insurance
Quick Apply
Sr Staff, SAP Product Lifecycle Management & Master Data Governance
Monster Energy —Corona, CA
- $169,500 - $226,000 a year
- 7 years
- Computer Science
- Continuous improvement
Quick Apply
Senior Data Analyst (AR)
Panda Restaurant Group —Rosemead, CA
- $90,000 - $126,500 a year
- Email
- Hybrid work
- 5 years
- Finance
- Bachelor's degree
- AD&D insurance
- Disability insurance
Quick Apply
Sr. Database Administrator
ONG HUMAN CAPITAL —Arcadia, CA
- $120,000 - $140,000 a year
- Full-time
- Computer science
- Azure
- Computer Science
Senior Database Administrator III
Prescient Edge Federal —Riverside, CA
- Full-time
- Microsoft Excel
- Microsoft Outlook
- Computer Science
- Health insurance
- Dental insurance
Microsoft SQL Sr DBA
Mercury Insurance Services, LLC —Brea, CA
- $77,283 - $179,048 a year
- 8 hour shift
- Hybrid work
- Computer science
- Computer Science
- Bachelor of Science
- Paid holidays
- Health insurance
Senior Data Analytics Developer
Living Spaces —La Mirada, CA
- $109,575 - $146,100 a year
- Full-time
- Computer Science
- 5 years
- Bachelor of Science
- Paid holidays
- Employee assistance program
Quick Apply
9d
Senior Business Analyst
Intratek Computer Inc —Orange, CA
- Contract
- Hybrid work
- Office
- Microsoft Office
- Finance
- Paid holidays
- 401(k)

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senior data jobs near ontario, ca

Senior Data Scientist - AI Trainer

DataAnnotation -
California

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Job Details

Part-time | Full-time | Contract
$50 - $100 an hour
13 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 Senior 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

senior data jobs in ontario, ca

Senior Data Scientist - AI Trainer

Senior Quantitative Analyst - AI Trainer

Senior Research Data Analyst

Senior Data Analyst

Senior Data Analyst

Senior Data Team Lead (Remote)

Senior Business Analyst – Data & Analytics

Senior Data Engineering & Analytics Lead

(Microsoft Fabric & Ontologies) - Senior Data lead / architect

Sr Product Analyst

Senior Specialist - Data Engineering

Senior Manager, Clinical Data Management

SENIOR SQL SERVER DATABASE DEVELOPER / DATA ENGINEER

Sr Staff, SAP Product Lifecycle Management & Master Data Governance

Senior Data Analyst (AR)

Sr. Database Administrator

Senior Database Administrator III

Microsoft SQL Sr DBA

Senior Data Analytics Developer

Senior Business Analyst

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