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Sigma AI

Linguist, Costa Rican Spanish

Sigma AI

. Perform linguistic project tasks including categorization, annotation, correction, transcription, evaluation, conversational interactions, voice recording, content creation, localization, and validation .

Posted 9/24/2026contractRemote • Costa RicaMid-LevelSeniorWebsite

Core Competencies

Role fit
Core Competencies

Use this summary to align your resume positioning with the role.

Demonstrates fluency in Costa Rican Spanish and English with strong attention to detail in linguistic project tasks such as categorization, annotation, and validation. Proficient in using basic computer skills and required technology for audio-collection projects.

Highest-signal resume keywords
Fluent In Costa Rican SpanishFluent In EnglishData Annotation ExperienceAttention To DetailBasic Computer Skills

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills
Linguistic Project TasksCategorizationAnnotationValidationTranscriptionContent CreationLocalizationVoice RecordingEvaluationConversational Interactions
Tools & Technologies
Windows 10 Or HigherMacOS 13 Ventura Or HigherMicrophoneWebcamStable Internet ConnectionHeadphonesMobile Phone With Android OS
Industry Keywords
Audio ValidationVideo ValidationImage ValidationSentence ValidationWord ValidationContent Rating

Tech Stack

Tools & technologies
AndroidiOSMacOS

About the role

Key responsibilities & impact
  • 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 required qualification tests after submitting an application
  • Participate in projects through Sigma.AI's online platform

Requirements

What you’ll need
  • Fluent in Costa Rican Spanish; able to listen and write correctly without spelling mistakes
  • Fluent in English; able to listen and write correctly without spelling mistakes
  • Basic computer skills
  • Minimum 4GB RAM computer
  • 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
  • For audio-collection projects only: mobile phone with Android OS
  • Tablets and iOS devices are not supported
  • Mandatory tests must be completed to move forward in the process
  • Preferred but not mandatory: experience in data annotation or content rating
  • Preferred but not mandatory: strong attention to detail

Benefits

Comp & perks
  • Remote work through an online platform available 24/7
  • Commercial contract for freelancers
  • Opportunity to participate in global, innovative, and impactful AI projects
  • Ethical, transparent, and legally compliant selection process
  • Professional and equitable work environment
  • Diversity and non-discrimination commitment