Toloka AI

AI Trainer - Freelance Data Annotator

Brazil full-time Mid BRL8 - BRL8
full-time Mid level Technology & IT Salary listed Curated
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About the role

Please submit your resume in English and indicate your level of English proficiency.
Mindrift connects specialists with project-based AI opportunities for leading tech companies, focused on testing, evaluating, and improving AI systems. Participation is project-based, not permanent employment.
What this opportunity involves
Annotation is what helps AI make sense of the world. As an annotator, you may be invited to take part in online projects such as rating AI-generated content, evaluating factual accuracy, or comparing responses — when projects are available.
While each project involves unique tasks, contributors may:

Carefully review provided data (text, images, or videos);

Label or classify content based on project guidelines;

Identify and flag factually incorrect, sensitive, inappropriate, or unclear material.

What we look for
This opportunity is a good fit for candidates open to part-time, non-permanent projects. Ideally, contributors will have:

Bachelor’s degree in any discipline;

Minimum 1 year of experience in any professional role;

Logical thinking, fact-checking and reasoning abilities;

Strong attention to detail and ability to understand and follow complex instructions;

Strong communication skills, including the ability to ask clarifying questions when needed;

Genuine interest in technology and artificial intelligence;

Strong written and spoken English (C1+).

How it works
Apply → Pass qualification(s) → Join a project (when available) → Complete tasks → Get paid
Why this freelance opportunity might be a great fit for you

Take part in a part-time, remote, freelance project that fits around your primary professional or academic commitments;

Participate into advanced AI projects and gain valuable experience that enhances your portfolio;

Influence how future AI models understand and communicate in your field of expertise.

Project time expectations
For this project, tasks are estimated to require around 10-20 hours per week during active phases, based on project requirements. This is an estimate, not a guaranteed workload, and applies only while the project is active. Tasks must be submitted by the deadline and meet the listed acceptance criteria to be accepted.
Compensation
Paid per accepted task. Your rate depends on the qualification tier you reach and how efficiently you complete tasks — up to the equivalent of $8/hr. Because payment is per task, a faster pace raises your effective hourly rate. Keep in mind, quality standards must be maintained, regardless of speed.
Originally posted on Himalayas

Interview prep

Walk in with sharper answers.

Use this as a quick practice sheet before you speak with the employer.

Mid
Technology & IT Remote Collaboration Trainer Freelance Data Annotator Mid level

Likely questions

  1. Tell us about work you have done that is close to the AI Trainer - Freelance Data Annotator role.
  2. How would you approach your first 30 days at Toloka AI?
  3. Which of Remote Collaboration, Trainer and Freelance have you used recently, and what did it help you achieve?
  4. Describe a time you solved a problem without waiting to be told exactly what to do.
  5. How do you handle busy days, changing priorities, or pressure at work?

Prepare before the call

  • A recent example that proves your experience with Remote Collaboration, Trainer and Freelance.
  • One short story with a problem, your action, and the result.
  • Two examples that show the strengths listed on your CV.
  • A clear reason why this role and company interest you.
  • Your availability, preferred work style, and salary expectations.

Ask them

  • What would success look like in the first 90 days?
  • What are the main problems this hire should help solve?
  • How does the team give feedback and measure good work?
  • What does a normal working week look like for this role?
Practice line

I am interested in the AI Trainer - Freelance Data Annotator role because I can bring practical experience in Remote Collaboration, Trainer and Freelance, learn the team quickly, and contribute to the outcomes Toloka AI needs from this hire.

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