Senior Data Scientist Expert

Data Science
Senior Data Scientist Expert
Ethos
•
Remote
Education
Not stated
Type
Hourly
Pay Rate
$100/hr
Listed
72d ago
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How Ethos hiring works
Your application is a 10-minute call.
Ethos's AI interviewer asks about your career, then matches you to projects like Senior Data Scientist. Keep your CV open and cover these:
4+ years of experience as a data scientist or ML engineer
▍
4+ years of experience as a data scientist or ML engineer
Current, hands-on familiarity with the documents your team writes and reviews
▍
Current, hands-on familiarity with the documents your team writes and reviews
Excellent written communication and attention to detail
▍
Excellent written communication and attention to detail
Start the call
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About this role
From the Ethos listing
About This Opportunity

About the role

We're working with a leading foundational AI lab to find experienced data scientists and ML engineers who can help train their latest language model on data science documentation tasks. We're looking for practitioners with 4+ years of experience to review and assess documents - judging whether the content and structure of each reflect the material they would genuinely encounter in day-to-day data science practice.

Compensation

$100/hour
Commitment:
Flexible, up to 20 hours/week
Location:
Fully remote
Start date:
ASAP

Qualifications

4+ years of experience as a data scientist or ML engineer
Current, hands-on familiarity with the documents your team writes and reviews
Excellent written communication and attention to detail
About Ethos
Ethos is an expert network backed by Andreessen Horowitz and General Catalyst, built to match professionals to economic opportunities in the age of AI. You create one Ethos profile, and we match you to paid opportunities across expert calls, market research, AI training projects, and full-time roles - so even if this particular opportunity isn't the right fit, your profile keeps working for you and unlocks additional engagements over time. Learn more at askethos.com.
Key Requirements
4+ years in data science
Python and SQL fluency
Experience with modeling and experimentation
No AI experience needed
How long hiring takes
Across the platforms we work with, people typically hear back about a hire within

about

30 days
of being referred.
Some are quicker, some take longer.
Within 2 weeks
~25%
Within 6 weeks
~60%
Within 3 months
~80%
Why this role
$100/hr for Senior Data Scientist Expert work puts your Data Science expertise on the same footing as an AI lab's own research staff, without the overhead of running a consulting practice around it.
Talent pool
We're light on Data Science candidates
We've matched 9 people with a Data Science background against 294 Data Science listings we've tracked, so most go out without one. Set up a profile and we'll consider you for a role like this one.
Set up your profile
Skills and categories
Explore other opportunities in related specializations:
Data Science
High-Pay ($100+/hr)
No Degree Required
STEM & Science
Expert
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Common questions
Is Ethos regular AI training work like rating chatbot responses?
No. Ethos is an expert network, not a task queue. AI labs, investment funds, and Fortune 500s pay to access your specific domain knowledge (deal analysis, clinical reasoning, legal logic, financial modeling) through three formats: multi-week consulting engagements, 30-60 minute advisory calls, and targeted research surveys.
Do I need to keep applying for projects on Ethos?
No. Once your profile is live, Ethos's algorithm matches you to inbound opportunities based on your career history, so companies find you instead of you hunting for listings. Your Expert Score rises with each completed engagement and unlocks higher-value work over time. Ethos already works with 25+ private equity firms, hedge funds, and consultancies, so the deal flow behind this is real.
Why do these AI training roles pay so much?
Because general knowledge isn't what's being tested. The model already knows the basics; what it needs is expertise on edge cases, the rare, difficult, highly technical judgment calls only a senior professional in the field would make correctly.
What does the day-to-day workload look like for elite-expert AI training roles?
Slow and deep, not fast and repetitive. A single task can take 45-60 minutes of researching citations or verifying complex calculations. Quality is what's being measured here, not throughput.
What does Data Science work look like for a Senior Data Scientist Expert?
Tasks here are scoped to Data Science, not generic labeling. As a Senior Data Scientist Expert, expect to draw on real domain judgment (evaluating outputs, correcting errors, or providing expert reasoning specific to Data Science) rather than following a one-size-fits-all rubric. If you don't have hands-on Data Science background, this is likely not the right listing to start with.
What specific skills does this listing call for?
Expert is named directly in the listing. If you don't have hands-on experience with this, expect the screening process to test for it directly rather than accepting adjacent experience as a substitute.
How much does this specific role pay?
This listing is posted at $100/hr, an hourly rate. Pay can change between when we last checked the listing and when you apply, so confirm the current number on the platform's own application page before committing time.
What happens when I click Apply on this listing?
You'll be taken to Ethos's external site to complete your application there. This listing links through a referral, but the process is identical to applying directly; the link just routes you correctly. Create an account on their site and follow their onboarding steps.
Who built Ethos and is it legitimate?
Yes, it's legitimate and well-funded: Ethos raised $3.5M from General Catalyst and was co-founded by Daniel Mankowitz (Google DeepMind research scientist and lead author of AlphaDev) and James Lo (McKinsey, SoftBank Vision Fund). Over 17,000 experts have signed up, and it's actively working with 25+ PE firms, hedge funds, and consultancies. The referral link on this page is an affiliate link; it doesn't affect your pay or opportunities.