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OpenTrainMaster's

Machine Learning / Data Science Expert

Support hands-on machine learning and analytics work for business applications. You will work with varied datasets and technical problems, complete assigned tasks independently, and document the reasoning behind your approach in an asynchronous workflow.

Field
Machine learning
Where
United States, Albania, Algeria, Antigua and Barbuda, Armenia, Australia +89 more
Hours
up to 10/week
Asks for
Master's
Posted
4 days ago

Pay data for your profession: Data scientist AI trainer jobs

How this pay compares

At $80/hr (the midpoint of $60 to $100), this role pays more than 44% of the 72 open machine learning roles with a listed pay range, below the median of $90.

Open machine learning roles that ask for a Master's have a median of $90/hr (14 roles).

Among platforms with 10 or more priced machine learning roles, Mercor has the highest median ($108/hr across 10 roles) and Alignerr the lowest ($63/hr across 13).

OpenTrain AI roles that closed since late October stayed listed a median of 31 days (122 roles). OpenTrain AI posted this one 4 days ago.

Computed from 2,746 open roles we track across Mercor, micro1, Handshake AI, Alignerr, Appen and OpenTrain AI, refreshed daily. Midpoints of listed ranges; “up to” ceilings are left out of medians.

What you would earn at this rate

Per week, before tax

$800

Per month, if the work is steady

$3,467

Tax
Contract pay arrives with no tax withheld. A US contractor at this rate and these hours would set aside about $876 a month for self-employment tax plus federal income tax at the 12% bracket (25%, before state tax). Outside the US, your own country's rules apply.

Assumes paid hours only; unpaid assessments, onboarding and gaps between projects lower the real figure. Full take-home calculator · Track what you actually earn

Open machine learning roles on each platform

The same kind of work, priced on every platform we track, with the best-paid open role on each.

PlatformOpenMedianBest-paid open role
Mercor10$108/hrMachine Learning Engineer Talent Network$70-250/hr
micro112$90/hrApplied Scientist$245-280/hr
OpenTrain AIthis role41$90/hrBioinformatics Machine Learning Expert$175/hr
Alignerr13$63/hrSoftware Engineer - Machine Learning$90-120/hr
Handshake AI3up to $75/hr3 pricedData ScientistUp to $120/hr

“Up to” rows list only ceilings, so their median is a maximum, not comparable with the range midpoints above them.

All 79 open machine learning roles →

The full listing

As posted on OpenTrain AI. See the original

The work

Support hands-on machine learning and analytics work for business applications. You will work with varied datasets and technical problems, complete assigned tasks independently, and document the reasoning behind your approach in an asynchronous workflow.

  • Build, train, and evaluate machine learning models.
  • Develop predictive models with supervised and unsupervised learning methods.
  • Improve model performance through hyperparameter tuning and feature engineering.
  • Document methodologies, model assumptions, and technical approaches.
  • Complete assigned technical tasks independently.

What it pays and takes

This is a remote, project-based contractor opportunity. The projects run over the next 2 to 3 weeks, and contributors choose the projects they accept.

  • $60 to $100 per hour.
  • 10 to 20 hours per week for accepted projects.
  • Remote work open to candidates in the countries listed for this role.
  • Professional fluency in English.
  • 1 to 3 years of professional experience in data science, machine learning, AI research, analytics, or a related field.
  • A master's degree in computer science, statistics, mathematics, data science, or a related quantitative field.
  • At least one first-author publication or equivalent first-author work.
  • Strong problem-solving skills and the ability to work independently on technical tasks.
  • Teaching machine learning, data science, or applied statistics is helpful, especially with strong programming and empirical analysis.

How it works

Apply on OpenTrain with your resume, then complete the application on the hiring site.

About AI training work

AI training is the human work behind artificial intelligence, including preparing, reviewing, and evaluating data and model outputs. OpenTrain is a free platform where people find AI training projects, build a profile, and apply for opportunities across the industry.

From applying to your first payment on OpenTrain AI

  1. 1

    Create a profile

    Create a free OpenTrain profile with your domains, languages and hourly rate.

  2. 2

    Apply

    Apply to the listing. Some listings hire through OpenTrain; others send you to the hiring platform.

  3. 3

    Funded milestones

    The client funds each milestone before work starts.

  4. 4

    First payment

    OpenTrain pays out to your connected payout method when the client approves the milestone. It doesn't publish a fixed payout schedule.

Sources: OpenTrain: AI training careers, OpenTrain docs: invoicing and payouts

Full OpenTrain AI profile: watch-outs and the public record →

Pay history

OpenTrain AI has listed this role at $60-100/hr since Nov 10, 2026 with no change.

Across OpenTrain AI's machine learning roles, the median listed pay was $90/hr on Nov 1, 2026 (25 roles) and is $90/hr as of Nov 11, 2026 (37 roles).

What workers report about OpenTrain AI

Anonymous reports from people who applied or worked there: whether they got work, what they were paid and how fast.

Other machine learning roles

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