AI Trainer - Freelance Annotator (Portuguese)
$23 per hourToloka Annotators
Overview This opportunity is only for candidates currently residing in the specified country. Your location may affect eligibility and rates. Please submit your resume in English and indicate your level of English. At Toloka, we connect smart, curious people from around the world with freelance online tasks that train and improve artificial intelligence. What We Do The Toloka Annotators connects individuals with Generative AI projects from leading tech innovators. Our mission is to unlock the full potential of AI by involving real people from around the world in the development process. About The Role 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. Responsibilities 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 Important note : This is project-based work. Tasks are available only when projects are active. You may be invited to one or more projects depending on your profile and current opportunities. Requirements Currently studying at a university or holding a completed Bachelor's, Master's, or PhD degree in any professional field Proficient in Portuguese (C2) and advanced in English (C1 or higher), both written and spoken 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 Benefits Get paid for your expertise, with rates that can go up to $23/hour depending on your skills, experience, and project needs Take part in a part-time, remote, freelance project that fits around your primary professional or academic commitments Work on advanced AI projects and gain valuable experience that enhances your portfolio Influence how future AI models understand and communicate in your field of expertise #J-18808-Ljbffr Toloka Annotators
$23 per hour
A leading AI project connector is looking for remote annotators to work on various data tasks that enhance... ...at a university, and possess strong proficiency in Portuguese and advanced English. This part-time freelance role pays up to $23/hour and is designed to fit around...FreelancePortuguese language skillsRemote jobPart time- Toloka invites you to join a global network of annotators for online AI-focused projects. You will review data and label content... ...levels vary by project scope and expertise. This part-time, remote freelance opportunity lets you work around other commitments while contributing...FreelanceRemote jobPart time
$50 per hour
...power of collective intelligence to ethically shape the future of AI. What we do The Mindrift platform connects specialists... ...and sometimes work with challenging, complex guidelines. Our freelance role is fully remote so, you just need a laptop, internet connection...FreelanceRemote jobFull timePart time$55 per hour
...power of collective intelligence to ethically shape the future of AI. What we do The Mindrift platform connects specialists... ...and sometimes work with challenging, complex guidelines. Our freelance role is fully remote so, you just need a laptop, internet connection...FreelanceRemote jobFull timePart time$55 per hour
A leading innovative tech firm seeks a Freelance AI Trainer specializing in Civil Engineering and Python. This part-time, fully remote role involves designing and evaluating AI models on civil engineering challenges. Candidates should have a Bachelor’s, Master’s, or PhD...FreelanceRemote jobHourly payPart time$55 per hour
...Freelance Biology Expert with Python - AI Trainer This opportunity is only for candidates currently residing in the specified country. Your location may affect eligibility and rates. Please submit your resume in English and indicate your level of English. At Mindrift...FreelancePart timeRemote work$60 per hour
A forward-thinking AI consultancy is seeking a Freelance Data Science Expert (Python & SQL) to design computational data science problems aimed at training GenAI models. This fully remote, part-time role offers compensation of up to $60/hour based on expertise and project...FreelanceRemote jobPart time$60 per hour
...Please submit your CV 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...FreelancePermanent employmentTemporary workPart time10 hours per week$55 per hour
...Please submit your CV 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...FreelancePermanent employmentTemporary workPart time10 hours per week$73 per hour
Quantitative Statistics Expert - Freelance AI Trainer This opportunity is only for candidates currently residing in the specified country. Your location may affect eligibility and rates. Please submit your resume in English and indicate your level of English. At Mindrift...FreelancePart timeRemote work$76 per hour
Please submit your CV 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...FreelanceHourly payPermanent employmentTemporary workPart time10 hours per week$60 per hour
Freelance Data Science Expert (Python & SQL) - AI Trainer This opportunity is only for candidates currently residing in the specified country. Your location may affect eligibility and rates. Please submit your resume in English and indicate your level of English proficiency...FreelancePart timeRemote work$73 per hour
...power of collective intelligence to ethically shape the future of AI. What We Do The Mindrift platform, launched and powered by... ...quickly and sometimes work with challenging, complex guidelines. Our freelance role is fully remote so, you just need a laptop, internet...FreelancePermanent employmentPart timeRemote work$60 per hour
A leading AI project firm is seeking a Freelance Software Developer specializing in Ruby. You will work on advanced AI projects, generating prompts and scoring model responses. Candidates should have a degree in Software Development or Computer Science, at least 3 years...FreelanceRemote job$55 per hour
A forward-thinking AI consultancy is seeking a Freelance Electrical Engineer Consultant. In this remote role, you will create and refine AI training content, assess expert qualifications, and moderate discussions. Candidates should have a Master's or PhD in Electrical Engineering...FreelanceRemote job$55 per hour
Freelance AI Trainer - Civil Engineering & Python 1 day ago Be among the first 25 applicants This opportunity is only for candidates currently residing in the specified country. Your location may affect eligibility and rates. Please submit your resume in English and indicate...FreelancePart timeRemote workFlexible hours$60 per hour
Freelance Software Developer (Ruby) - AI Trainer Location : Remote, full‑time, freelance Overview At Mindrift, we connect AI projects with specialists worldwide. As an AI Trainer in coding, you’ll help improve generative AI models by generating prompts, scoring responses...FreelanceFull timePart timeRemote workWorldwide$34 per hour
...our team as Data Labeling Analysts, supporting speech and voice AI systems. Project Details Job Title: Data Labeling Analyst... ...sessions What We’re Looking For ~ Native-level fluency in Portuguese (Portugal) ~ Strong written communication skills and language fundamentals...Portuguese language skillsFull timeWork experience placementVisa sponsorship- ...interaction.As we continue to evolve, we are actively cultivating AI skills across our teams to unlock new levels of creativity,... ...Fluent English (required)Fluent Spanish (required) Proficiency in Portuguese/Brazilian Portuguese is a strong advantagePersonal AttributesSelf...Portuguese language skillsContract workLocal area
- ...medical records into high-quality structured training sets powering the Aika platform. You will label diverse clinical datasets, support AI training, apply MedDRA/SNOMED coding, and ensure data quality for regulatory-grade outputs, with hybrid work and private health...
- ...will transform unstructured clinical notes, protocols, and medical records into high‑quality, structured training data powering our AI platform. The role requires a life sciences background, 2+ years in clinical data management, data cleaning and medical coding, and careful...
- ...submitting them. Earning potential ranges from $3,000 to $11,000 per successful placement with no limits on the number of placements. This freelance role requires no prior experience and offers flexibility in working hours, making it ideal for anyone looking for online income or...FreelanceSecond jobRemote workFlexible hours
- ...A leading legal services firm is seeking a Portuguese Document Reviewer to assist with specialized document review, privilege review, and related legal tasks. Candidates should possess fluency in Portuguese, bar admission in at least one U.S. jurisdiction, and familiarity...Portuguese language skillsRemote workFlexible hours
- YO AI Labs is seeking a licensed attorney to contribute expert legal analysis for AI training projects in a fully remote contractor role. You will draft memos, review contracts, and ensure accuracy of legal content within a fast-paced, tech-driven setting. US bar admission...Remote jobContract workFor contractors
$34 per hour
...Portuguese Document ReviewerContact Review - Washington, DCLocation: RemoteStart Date: NegotiableExperience & QualificationsFluency in PortugueseFamiliarity with document review workflowsExamples: Privilege/Responsiveness Review, Redactions, Conceptual Searching, First...Portuguese language skillsRemote work- ...architecture principles and design patterns.Excellent problem-solving and leadership skills.Strong communication skills in English and Portuguese (written and verbal).SRI Tech Solutions is an equal opportunity employer and does not discriminate on the basis of race, color,...Portuguese language skillsFull time
- Kake, based in Austin, Texas, seeks Chemistry professionals skilled in Python to join their talent pool for AI development initiatives. Candidates will work on evaluating and enhancing frontier AI models, engaging in deep technical problem-solving involving specialized...Remote job
$55 per hour
A leading AI consultancy is seeking physicists for project-based roles focused on evaluating AI solutions. Ideal candidates will have a degree in Physics or a related field and 3+ years of experience. Responsibilities include designing physics problems and validating AI...Hourly payPermanent employmentTemporary workPart time- Mercor is seeking experimental scientists and engineers specialising in superconductors to support a frontier AI research lab building advanced models for materials science and the physical sciences. This is hands-on, expert-level work: you’ll apply deep, specialised knowledge...
- ...candidates will have a proven track record in B2B sales, familiarity with Fortune 500 companies, and fluency in both English and Portuguese. You'll enjoy a flexible working environment with comprehensive benefits and opportunities for growth. #J-18808-Ljbffr Dormont Manufacturing...Portuguese language skillsFlexible hours
Do you want to receive more vacancies?
Subscribe and receive similar vacancies to AI Trainer - Freelance Annotator (Portuguese). Be the first to apply!
- ai trainer Austin, TX
- work from home online freelance Austin, TX
- part time freelance writer Austin, TX
- international freelance Austin, TX
- moonlight Austin, TX
- freelance editor Austin, TX
- freelance communication Austin, TX
- freelance Austin, TX
- remote freelance Austin, TX
- freelance software developer Austin, TX


