Linguistic Projects – Portuguese (Brazil), Spanish, English

🔥 1 hour ago

🇧🇷 Brazil – Remote

⏳ Contract/Temporary

🟡 Mid-level

🟠 Senior

✨ Spanish

👻 Ghost score 10%

What it means: how likely this posting is sitting open without active hiring.How to read it: 60% or higher means we think this is a ghost. Lower scores are less of a worry.How we score it: age, reposts, open roles vs team size, how fast jobs close, and whether pay is listed.Fine print: an estimate from public data, not a judgment of the company. Real jobs can score high, so treat it as a hint, not a fact.

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Sigma AI

WebsiteLinkedInAll Job Openings

501 - 1000 employees

Founded 2008

💼 Consulting

🏥 Healthcare

📦 Logistics

Consulting • Healthcare • Logistics

Sigma AI is a global company that collects, prepares, and labels high-quality training data and delivers custom, data-centric AI solutions to help organizations build ethical, human-centered machine learning systems. Through its Sigma Cognition arm it offers bespoke AI services, and its workforce of annotators and specialists supports speech, text, image, and video data annotation at scale. The company emphasizes integrity, inclusivity, and sustainability while helping clients reduce bias and scale AI responsibly.

📋 Description

• Perform linguistic-project tasks including categorization, annotation, correction, transcription, evaluation, conversational interactions, voice recording, content creation, localization, and validation • Validate audio, video, images, sentences, or words • Complete assigned tasks remotely through an online platform available 24/7 • Provide documentation or information reasonably requested to verify identity and credentials • Complete mandatory tests to assess qualifications

🎯 Requirements

• Fluent in Portuguese (Brazil), able to listen and write correctly without spelling mistakes • Fluent in Spanish, able to listen and write correctly without spelling mistakes • Fluent in English, able to listen and write correctly without spelling mistakes • Computer literacy • Computer with minimum 4GB RAM • Microphone and webcam • Windows 10 or higher, or macOS 13 Ventura or higher • All operating-system updates installed and supported by the vendor • Stable internet connection • Headphones • Secure internet location protected by a strong password • Mobile phone with Android OS for audio-collection projects • Tablets and iOS devices are not supported • Preferred but not mandatory: experience with computational linguistics, corpus analysis, language data annotation, or LLM training • Preferred but not mandatory: strong attention to detail • Mandatory qualification tests after application submission

🏖️ Benefits

• Remote work through an online platform available 24/7 • Freelance commercial contract opportunity • Opportunity to contribute to global, innovative, and impactful AI projects