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OpenTrain

Materials Science and Engineering Expert

Create expert evaluation materials that test whether AI models can make sound decisions about materials in professional settings.

Field
Chemistry
Where
United States, Albania, Algeria, Antigua and Barbuda, Armenia, Australia +89 more
Hours
up to 10/week
Posted
4 days ago

Pay data for your profession: Science AI trainer jobs · Chemistry AI trainer jobs

How this pay compares

At $115/hr (the midpoint of $100 to $130), this role pays more than 87% of the 51 open chemistry roles with a listed pay range, above the median of $83.

Among platforms with 10 or more priced chemistry roles, Mercor has the highest median ($85/hr across 11 roles) and OpenTrain AI the lowest ($75/hr across 25).

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

$1,150

Per month, if the work is steady

$4,983

Tax
Contract pay arrives with no tax withheld. A US contractor at this rate and these hours would set aside about $1,260 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 chemistry 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
Mercor11$85/hrChemistry Domain Expert$90-140/hr
Alignerr13$83/hrChemist, PhD$90-120/hr
OpenTrain AIthis role25$75/hrComputational Materials Science Expert$175/hr
Handshake AI6up to $58/hrChemistry ExpertUp to $150/hr

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

All 57 open chemistry roles →

The full listing

As posted on OpenTrain AI. See the original

The work

Create expert evaluation materials that test whether AI models can make sound decisions about materials in professional settings.

  • Write realistic scenarios covering material selection through failure analysis.
  • Provide reference answers and explain the structure-property reasoning behind each decision.
  • Rate model recommendations for technical accuracy, practical feasibility, and suitability for real service conditions.
  • Flag recommendations that sound plausible but would fail in service. Work may draw on metals, polymers, ceramics, or semiconductors.

What it pays and takes

  • Pay: $100 to $130 per hour, paid weekly via Stripe.
  • Hours: At least 10 hours per week; no stated maximum. Work is asynchronous with no fixed schedule, and hours can vary from week to week.
  • Location: Fully remote and open to candidates in eligible countries.
  • Language: English required.
  • Requirements: A degree in materials science and engineering or a closely related field; at least 2 years of professional materials engineering or research and development experience; deep expertise in at least one materials class; and clear technical writing skills.
  • Helpful background: An advanced degree or peer-reviewed publications; experience with SEM, XRD, or DSC; or experience in failure analysis or process qualification.

How it works

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

About AI training work

OpenTrain is a free platform where people find AI training projects and apply. AI training uses examples and human reviews to test how models respond, and materials expertise helps assess whether technical recommendations are accurate and workable.

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 $100-130/hr since Nov 10, 2026 with no change.

Across OpenTrain AI's chemistry roles, the median listed pay was $70/hr on Nov 1, 2026 (13 roles) and is $75/hr as of Nov 11, 2026 (25 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 chemistry roles

All 57 chemistry roles →