AI Training Data Specialist
Using deep domain knowledge to create, curate, and validate the training data that makes AI models accurate and trustworthy in specialist domains.
At a glance
UK salary
£50,000–£85,000
US salary
$70,000–$120,000
Growth
+88% YoY
Technical req.
No coding
Remote
Fully remote
Experience
Mid, Senior, Freelance / Consulting
What does a AI Training Data Specialist actually do?
Day to day, this role involves a mix of technical evaluation, stakeholder communication, and domain expertise. Here's what you'd typically be doing:
- →Creating high-quality domain-specific training data for AI models
- →Designing data collection and annotation guidelines
- →Evaluating and quality-controlling AI training datasets
- →Working with ML teams to understand data requirements
- →Applying domain expertise to validate AI outputs in specialist areas
- →Freelance annotation and expert review for AI companies
Why this role is being created right now
The quality of an AI model is determined by the quality of its training data. For AI to work reliably in medicine, law, finance, or engineering, it needs training data created by people who deeply understand those domains.
This role is a natural fit for experienced professionals who want to contribute to AI development while leveraging their domain expertise — often on a freelance or part-time basis.
•AI training data market expected to reach $6.8B by 2027 (MarketsandMarkets)
•Expert domain annotators earn 3–5× more than general annotators (Scale AI, 2026)
Who hires AI Training Data Specialists
Sectors
- ·AI research
- ·Healthcare AI
- ·Legal AI
- ·Financial AI
- ·Education technology
Organisation types
- ·Foundation model companies
- ·Data annotation platforms (Scale AI, Surge HQ)
- ·Domain-specific AI startups
- ·Enterprise AI teams
Geography: Remote — global
Salary ranges
🇬🇧 United Kingdom
£50,000–£85,000
per year
🇺🇸 United States
$70,000–$120,000
per year
Sources: LinkedIn Salary, Indeed, Lightcast. Ranges reflect mid-to-senior experience levels.
Skills you need
Domain & soft skillsForegrounded
Technical skills
* This role is classified as “no coding required” — technical skills are learnable on the job.
Community
Connect with others in this role
Members in our community work in or are transitioning to ai training data specialist roles. Ask questions, share your path, and find mentors.
Join free →Career paths into this role
Any domain expert (doctor, lawyer, engineer, financial professional)
1–3 months to first paid work- 1.Register on expert annotation platforms (Scale AI Expert Network, Surge HQ)
- 2.Complete sample tasks to demonstrate domain expertise
- 3.Build a track record of high-quality annotation work
- 4.Apply directly to AI companies seeking domain expertise
- 5.Scale to full-time or senior data curation roles
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