Portuguese Bilingual Expert (Brazil)

Joinkeywork; Brasil; Remote; BRL 28,000 - 50,000; Part time

Benefits offered by this job

Remote work

Hourly pay

Flexible schedule

Job summary

micro1 is seeking freelance Portuguese language annotators in Brazil to evaluate native fluency and pronunciation of Portuguese audio for AI training. You will provide English-language feedback and justifications, helping to shape model learning and performance.

Roles are remote and paid by the hour, with flexible scheduling to fit around studies or other work. No prior AI experience is required; domain knowledge in linguistics or related fields is valued.

Qualifications

• Native-level Portuguese with clear enunciation and natural fluency.
• Minimum B2 level in English for written and verbal communication.
• Background in linguistics, phonetics, or related fields is preferred.
• Experience with audio analysis, transcription, or linguistic assessment is valued.
• Strong attention to detail and ability to articulate nuanced language differences.
• Excellent written and verbal communication skills, clarity and accuracy.

Responsibilities

• Listen to audio clips in Portuguese and evaluate nativeness and fluency of speaker or model output.
• Assess pronunciation, intonation, and linguistic authenticity per guidelines.
• Document assessments with clear, concise written feedback in English.
• Provide detailed justifications for evaluations to ensure clarity and consistency.
• Collaborate with project coordinators to clarify requirements or address ambiguities in language content.
• Contribute insights to improve AI model performance in Portuguese language understanding and generation.
• Ensure timely and accurate completion of audio review tasks with high quality.

Skills

Portuguese native

English B2

Linguistics background

Audio analysis

Attention to detail

Clear written/verbal communication

Education

Linguistics related field

Job description

It is freelance work you fit around a job or your studies. Take two minutes to see what it is and what happens after you apply.

micro1 is engaging Portuguese Bilingual Experts (Brazil) to contribute to a customer's project focused on advancing AI-powered technologies and language understanding. In this role, you'll apply your expertise to help train next-generation AI systems. Your work will shape how models learn, reason, and perform through high-quality, real-world input. No prior experience in AI is required — your domain knowledge is what matters.

Scope of Work

• Listen to audio clips in Portuguese and evaluate the nativeness and fluency of the speaker or model output.
• Assess pronunciation, intonation, and linguistic authenticity according to established guidelines.
• Document your assessments with clear, concise written feedback in English, noting key linguistic factors.
• Provide detailed justifications for each evaluation to ensure clarity and consistency in results.
• Collaborate with project coordinators to clarify requirements or address ambiguities in language content.
• Contribute insights to help improve AI model performance in Portuguese language understanding and generation.
• Ensure timely and accurate completion of assigned audio review tasks, maintaining high standards of quality.

Preferred Qualifications

• Native-level proficiency in Portuguese, with clear enunciation and natural fluency.
• Minimum B2 level proficiency in English, especially for written and verbal communication.
• Background in voice specialization, linguistics, phonetics, music/audio engineering, or related fields is prefered.
• Experience with audio analysis, transcription, or linguistic assessment is highly valued.
• Strong attention to detail and ability to articulate nuanced language differences.
• Excellent written and verbal communication skills, with a focus on clarity and accuracy.
• Familiarity with media, communications, or teaching is considered an asset.

Description from micro1. Full details and the application are on micro1's site.

About micro1

micro1 builds teams of vetted experts for AI companies, from annotators and language specialists to engineers and domain professionals. The first step is an interview with Zara, micro1's AI interviewer, which you can take at any time. Roles are remote and paid by the hour.