Top 283 Ai scientist Jobs in Freelance

Machine Learning Scientist - AI Trainer
DataAnnotation —Burlington, CA
- $50.00 - $140.56 an hour
- Part-time
- Remote
- Computer Science
- English
- Mid-level
- Flexible schedule
Quick Apply
10d
Computational Scientist - AI Trainer
DataAnnotation —Richmond, CA
- $50.00 - $140.56 an hour
- Part-time
- Remote
- Computer Science
- English
- Mid-level
- Flexible schedule
Quick Apply
10d
Senior AI/ML Applied Scientist - Remote
UnitedHealth Group —Bellevue, WA
- $130,000 - $162,500 a year
- Full-time
- Remote
- Computer Science
- Pass drug screening
- 3 years
Applied Scientist, Shopping AI
Zillow.com —Remote
- $129,500 - $217,700 a year
- Full-time
- Remote
- Computer Science
- Master's degree
- Doctor of Philosophy
AI Research Scientist, Agentic Systems (Remote)
CrowdStrike —Remote
- $120,000 - $180,000 a year
- Full-time
- Remote
- Doctor of Philosophy
- Senior level
- Paid holidays
- Health insurance
Senior Research Director - Center for Responsible AI in Learning and Assessment
Educational Testing Service (ETS) —Remote
- $235,000 - $275,000 a year
- Full-time
- Remote
- Computer Science
- Doctor of Philosophy
- Psychology
- Paid time off
Quick Apply
Research Scientist 5/6 – AI for Member Systems
Netflix —Remote
- $466,000 - $750,000 a year
- Full-time
- 6 years
- Computer Science
- Java
- Paid holidays
- Health insurance
Machine Learning Scientist 5 - Sales, Ads DSE
Netflix —Remote
- $466,000 - $750,000 a year
- Remote
- Computer Science
- Master's degree
- SQL
- Paid holidays
- Health insurance
Principal Applied Scientist, Agentic AI
Zillow.com —Remote
- $181,800 - $305,700 a year
- Full-time
- Remote
- Computer science
- Computer Science
- Writing skills
Staff Machine Learning Scientist, Agentic AI
Natera —San Carlos, CA
- $163,200 - $220,000 a year
- Remote
- Computer Science
- Master's degree
- 8 years
- Commuter assistance
- Health insurance
Senior Staff Generative AI Scientist
Cotiviti —Remote
- $194,000 - $220,000 a year
- Full-time
- Azure
- Computer Science
- AWS
- Paid holidays
- Disability insurance
Senior Lead Applied AI Scientist
Lumen Technologies —Remote
- $132,232 - $242,425 a year
- Remote
- Background check
- 7 years
- Computer Science
8h
Research Staff, Voice AI Foundations
Deepgram —Remote
- $150,000 - $250,000 a year
- Full-time
- Remote
- Mid-level
- Analysis skills
- Math
Staff Machine Learning Scientist, Translational AI
Natera —Boston, MA
- $163,200 - $220,000 a year
- Remote
- Computer Science
- 5 years
- Math
- Commuter assistance
- Health insurance
Physics Expert (PhD / Postdoc) – AI Trainer
micro1 —Remote
- $80 - $140 an hour
- Contract
- Remote
- Math
- Doctor of Philosophy
- Senior level
- Flexible schedule
Computational Chemist - AI Trainer
DataAnnotation —Pasadena, CA
- $50 - $100 an hour
- Part-time
- Remote
- Computer Science
- Writing skills
- English
- Flexible schedule
Quick Apply
7d
Physics Expert (Postdoc / Junior professor) – AI Trainer
micro1 —Remote
- $80 - $150 an hour
- Contract
- Remote
- Analysis skills
- Math
- Doctor of Philosophy
- Flexible schedule
Physics Expert (PhD) – AI Trainer
micro1 —Remote
- $80 - $90 an hour
- Contract
- Remote
- Analysis skills
- Math
- Continuous improvement
- Flexible schedule
8d
Physics Expert (Professor / Principal Investigator) – AI Trainer
micro1 —Remote
- $80 - $160 an hour
- Contract
- Remote
- Doctor of Philosophy
- Senior level
- Leadership
- Flexible schedule
Economics Expert (PhD) – AI Trainer
micro1 —Remote
- $80 - $90 an hour
- Contract
- Remote
- Research
- Analysis skills
- Doctor of Philosophy
- Flexible schedule
8d

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Machine Learning Scientist - AI Trainer

DataAnnotation -
Burlington, CA

Quick Apply

Job Details

Part-time | Full-time | Contract
$50.00 - $140.56 an hour
10 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 Machine Learning 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

ai scientist jobs in freelance

Machine Learning Scientist - AI Trainer

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Senior AI/ML Applied Scientist - Remote

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AI Research Scientist, Agentic Systems (Remote)

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Physics Expert (PhD / Postdoc) – AI Trainer

Computational Chemist - AI Trainer

Physics Expert (Postdoc / Junior professor) – AI Trainer

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Physics Expert (Professor / Principal Investigator) – AI Trainer

Economics Expert (PhD) – AI Trainer

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