Portuguese Linguistic Project

Sigma AI

Join Sigma AI as an Annotation & Translation specialist for data collection and annotation. Work fully remote with a focus on linguistic projects involving Portuguese and English.

Posted 6/11/2026full-timeRemote • 🇵🇹 PortugalMid-LevelSeniorWebsite

About the role

Key responsibilities & impact

Annotation — audio, video, image, sentence, and word validation
Categorization and conversational interaction labeling
Content creation
Correction and revision
Evaluation
Localization

Requirements

What you’ll need

Native or near-native proficiency in European Portuguese (Portugal)
Native or near-native proficiency in English
Degree in one of the following fields: Psychology, Paralinguistics, Speech Therapy, or Pedagogy/Education
Strong understanding of emotions in speech production
High accuracy in detecting emotional changes in speech
Excellent writing, editing, and communication skills
Proficient computer skills
Preferred (not mandatory): experience in one or more of the following — computational linguistics, corpus analysis, language data annotation, or large language model (LLM) training
Strong attention to detail

Benefits

Comp & perks

Connectivity & equipment: stable internet connection
Headphones
Secure workspace with password-protected internet access

ATS Keywords

✓ Tailor your resume

Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills & Tools

language data annotationcomputational linguisticscorpus analysislarge language model trainingcontent creationevaluationlocalizationaudio validationvideo validationimage validation

Soft Skills

excellent writing skillsediting skillscommunication skillsstrong attention to detailunderstanding of emotions in speech productionhigh accuracy in detecting emotional changes in speech

Certifications

degree in Psychologydegree in Paralinguisticsdegree in Speech Therapydegree in Pedagogydegree in Education