Job Overview
Job description
- Salary:
- USD 13 per hour
- Location:
- Portugal
- Work arrangement:
- On-site
Role Summary
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.
Requirements
- 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.
Paid per accepted task. Your rate depends on the qualification tier you reach and how efficiently you complete tasks — up to the equivalent of $13/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.
- Role:
- Freelance Annotator (English) - AI Trainer
- Job Type:
- Contractor
Company profile

Toloka AI
toloka.aiToloka is a provider of expertly curated data for the development of AI agents and models, combining human expertise with machine learning technology. It builds data solutions for agentic skills, coding, AI safety, text generation and reasoning, and image, video and audio generation for frontier and specialized models, and it runs Toloka Arena for ranking models. Founder and CEO Olga Megorskaya established the company in 2014 and moved it from a crowdsourcing and microtasking platform to training data for large language models and generative AI.
- Headquarters
- Amsterdam, Netherlands
- Founded
- 2014
- Founders
- Olga Megorskaya
- Funding Stage
- Subsidiary