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Hire Domain Expert AI Trainers

Generic annotators can't tell when an AI agent gets a tax rule or a drug interaction wrong. Domain expert AI trainers in maths, finance, law and medicine write, grade and stress-test agent outputs for US AI labs.

Start Hiring $0 cost until you hire

Trusted by

AdobeMixCare HealthLacosteManevaTom FerryYusen LogisticsNeopets

50–70%

payroll savings compared to U.S.

24hours

to get matched

92%

talent retention rate

Top 1%

AI-native talent

200+

teams building with us

2,400+ Domain Expert AI Trainers Available to Hire

Vetted, available, ready to start.

Why Second Talent?

Dedicated AI training specialists who produce the human data your model learns from. Pre-vetted, compliant, and matched in 24 hours.

01

Dedicated, not crowdsourced

Specialists who work on your project only, learn your guidelines deeply, and hold the same quality bar week after week. Your data stays in your own tools.

02

Tested against gold answers

Every candidate applies a real rubric to tasks with known answers. We score agreement, read every rationale, and check references. Only the top few percent pass.

03

Experts and native speakers

Engineers, scientists, finance, legal, and medical professionals, plus native speakers of Vietnamese, Thai, Bahasa, Filipino, Malay, and Chinese.

04

Onboard in days

We handle contracts, payroll, and compliance through our Employer of Record. You go from brief to a working specialist inside a week.

Results from teams that hired with us

Faster hires, lower burn, more shipped.

Anketa

$200K

saved in hiring costs

A social polling platform that hired 2 senior engineers in 24 days on average, weeks after launch.

Maneva

$27M

Series A raised

An industrial AI company that hired 6 specialists across 3 roles from one pipeline, then raised its Series A.

Truckstop

8

engineers hired

The freight company behind the internet's first load board, adding data, full-stack and mobile engineers in 22 days on average.

Tom Ferry

14

developers hired

A real-estate coaching company that built its first engineering team in Vietnam, across 5 role types, at 60 to 70% less than US hiring.

Open Campus

70%

productivity boost

A Web3 education platform that hired 10 engineers in Vietnam in two months to speed up its roadmap.

Beyond Cars

$1.5B

acquisition outcome

A machine-learning car marketplace that grew its Taiwan engineering team 70%, entered 3 new markets and was acquired by Carro.

Chow Sang Sang

70%

labor cost saved

A luxury jeweler with 870 stores across Asia that staffed its e-commerce push from Malaysia and lifted efficiency 30%.

Mixcare Health

70%

efficiency gain

A digital health platform that hired 5 developers and ops staff across Vietnam and Malaysia without slowing delivery.

SatLayer

50%

productivity uplift

A Bitcoin restaking platform that grew its team 20% with frontend and product hires and lifted technical capability 40%.

Lane Crawford Joyce

3

role types staffed

A luxury retail group that stood up a 10-engineer team in Vietnam in two months and doubled its development speed.

imBee

3 days

to first SDR hire

An omnichannel chat platform that built a team of 3 SDRs in Indonesia to drive lead generation.

WELL3

2 mo

hiring time saved

A blockchain wellness platform that hired the lead engineer in Hong Kong to anchor its offshore team.

How to hire a Domain Expert AI Trainer with Second Talent

Matched in 24 hours. Pre-vetted for your exact specialism. Transparent pricing.

1

Share the brief

Tell us the task types, your guidelines, the languages or fields involved, and the volume you expect.

2

Meet top picks

24-hour shortlist of pre-vetted specialists with real portfolio work. Interview the ones you like.

3

Start in days

We handle EOR, payroll, and compliance. Your specialist delivers real output in the first week.

Trusted by teams that ship fast

Founders and engineering leaders on hiring with Second Talent.

Partnering with Second Talent has been a game-changer for our tech expansion.

Their ability to source top-tier talent from Vietnam helped us scale rapidly while maintaining quality. Their pre-vetted candidates integrated seamlessly, and their account management ensured smooth onboarding.

Tom F.

Tom F.

Co-founder (#1 US Real Estate Coach)

Tom Ferry

Second Talent played a key role in our tech expansion, quickly providing high-quality frontend talent that integrated seamlessly into our projects.

Their pre-vetted candidates, smooth onboarding process, and excellent support helped us build a strong, cost-effective team that drives our success.

Marco A.

Marco A.

Co-founder & CTO

Finno

Thanks to Second Talent, Open Campus quickly built a skilled tech team of 10 within two months, boosting productivity by 70% and accelerating our Web3 platform's development.

This success has strengthened our role in decentralized education and fueled our market expansion, highlighting our leadership in Web3 innovation.

Jonah L.

Jonah L.

Head of Portfolio (raised US$100m)

Animoca Brands

Second Talent helped Beyond Cars (acquired by Carro) swiftly build a top-tier tech team in just a month, accelerating our platform's development and boosting productivity.

This success allowed us to expand into new markets, ultimately leading to our acquisition by a major automotive e-commerce company.

Garry Y.

Garry Y.

Co-Founder (acquired by Carro)

Carro

Second Talent built our team of pre-vetted engineers who made our hiring decisions straightforward.

Once onboarded, our tech team saw a significant boost in productivity and development speed. Their excellent account management and responsive customer service also ensured smooth handling of all post-onboarding HR matters.

Jack N.

Jack N.

Director of IT (10,000+ employees)

Lane Crawford

Second Talent helped us rapidly scale by sourcing top-quality SDR talent from Indonesia.

Their pre-screened candidates fit perfectly, and their smooth onboarding and support built a strong, cost-effective team that helped to test and experiment sales with another market.

Leo W.

Leo W.

Co-founder (raised US$5m)

imbee

AI Training Specialists for every model

Human feedback, code, expert knowledge, and native language data. Pick a role to see profiles, rates, and a hiring guide.

Other specialist roles

A Complete Guide to Hiring Domain Expert AI Trainers

Contents (8 sections)

TL;DR: Hire a pre-vetted domain expert AI trainer from across Asia for $2,500–$6,500+/mo. Graduates, postgraduates, and practicing professionals in maths, science, finance, law, and medicine who write and check the expert-level data your model learns from. Shortlist in 24 hours, $0 upfront.

Why Hire a Domain Expert AI Trainer

A general reviewer can judge whether an answer is clear and polite. They cannot judge whether a proof holds, a drug interaction is right, or a tax treatment applies. As models move into expert work, the training data has to come from experts. A domain expert AI trainer writes hard questions, solves them step by step, and catches errors a generalist would pass.

This is the most costly kind of training data to get wrong. A confident, fluent, incorrect answer in medicine or law does more harm than no answer at all. Expert trainers make sure the model learns the right reasoning, not just the right tone.

Through Second Talent you skip the search. We match you with experts who can also write clearly for a model, and you only pay when you make a hire.

What a Domain Expert AI Trainer Does

  • Expert prompts: writing difficult, realistic questions that stretch the model in their field.
  • Worked solutions: step-by-step answers with the reasoning shown, for supervised fine-tuning.
  • Error finding: checking model reasoning line by line and marking the exact step where it fails.
  • Rubric writing: defining what a correct, complete, and safe answer looks like in their field.
  • Preference judgments: ranking responses on accuracy first, then clarity.
  • Source checking: verifying facts, formulas, and references against primary sources.

Fields We Cover

Field Typical background Example work
Mathematics Degree or postgraduate study in maths Proofs, competition problems, applied maths
Physics, chemistry, biology Postgraduate study or research experience Multi-step problems, lab reasoning, data interpretation
Finance and accounting Qualified accountants and financial analysts Valuation, reporting standards, financial modeling
Law Law graduates and qualified lawyers Contract analysis, case reasoning, jurisdiction-aware answers
Medicine and health Doctors, pharmacists, and nurses Clinical reasoning, drug information, patient-safe answers

Legal and medical trainers are qualified in their home jurisdiction. Tell us whether your model must reason under US, UK, or local rules, and we match on that.

Domain Expert AI Trainer Rates

Monthly ranges for 2026, full-time and dedicated to your project:

Level Monthly (Asia) Typical profile
Graduate $2,500–$3,500 Strong degree in the field, first AI training project
Postgraduate $3,500–$5,000 Master's or PhD, or several years of practice
Senior professional $5,000–$6,500 Licensed practitioner or published researcher
Lead $6,500+ Sets rubrics and reviews other experts

Monthly cost to hire Domain Expert AI Trainers by location, low to high range

Rates vary by field and market. See the Asia Tech Salary Index for country-level context.

What We Vet For

Expertise comes first. We confirm each candidate's degree or professional license, then run a field-specific test where they solve hard problems and grade flawed model answers. A writing sample, an English communication check, and reference checks follow. Only the top few percent pass.

We look for experts who can explain their reasoning plainly. A brilliant specialist who cannot write a clear rationale produces data a model cannot learn from.

How Hiring Works

Share your brief: the field, the level of difficulty, your guidelines, and the volume you expect. We send a shortlist of pre-vetted domain expert trainers within 24 hours. You interview the candidates you like and can set them your own sample task. We handle contracts, payroll, and compliance through our Employer of Record service, so there is no local entity to set up.

Most clients go from first call to a working trainer in under a week. If the fit is wrong, our 90-day replacement guarantee covers a re-match at no extra cost.

Related Hiring

Is your expert work mostly code? See Coding AI Trainers. Need expert data in Asian languages? See Multilingual AI Trainers. Or browse all AI training specialists.

Get Started

Tell us which field your model needs to master. We will deliver a pre-vetted shortlist within 24 hours. Book a free consultation to begin.

Frequently Asked Questions

Answers to common questions.

What is a domain expert AI trainer?
A graduate, postgraduate, or practicing professional who writes and checks expert-level training data: hard questions in their field, step-by-step worked solutions, line-by-line error finding in model reasoning, and rubrics that define a correct answer.
Which fields can you cover?
Mathematics, physics, chemistry, biology, finance and accounting, law, and medicine and health. Legal and medical trainers are qualified in their home jurisdiction, so tell us which rules your model must reason under.
Why not use general reviewers for this work?
A general reviewer can judge clarity and tone, but not whether a proof holds or a drug interaction is right. In expert fields a fluent wrong answer does real harm, so the data needs someone who can verify the reasoning itself.
How much does a domain expert AI trainer cost?
Monthly rates run from around $2,500 for strong graduates to $6,500+ for senior professionals and leads who set rubrics for other experts. There are no upfront fees and no recruiter commission.
How do you verify their expertise?
We confirm each candidate's degree or professional license, then run a field-specific test where they solve hard problems and grade flawed model answers. A writing sample, an English communication check, and reference checks follow.
How fast can I hire one?
Most clients receive a shortlist of pre-vetted domain experts within 24 hours of sharing their brief. Rare specialisms can take a little longer, and we tell you up front when that is the case.
G2 Badges

Pre-vetted Domain Expert AI Trainers matched in 24 hours.

$0 upfront. 90-day replacement guarantee. We handle payroll and compliance.

See 3 Profiles

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