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Freelance - Spanish Data Annotation Specialist (100% Remote within Europe)

Barcelona🌐 Remote💼 Contract🗓 2026-08-04 → 2026-09-26

Core

Prepare and curate linguistically and medically oriented datasets in Spanish to power machine learning and NLP initiatives for AI-driven products in the medical domain.

Role type

Freelance Spanish Data Annotation Specialist

Builds

Medically oriented datasets for NLP systems

Domain

Healthcare + Natural Language Processing

Deliverable

production ML models

Required skills

Native Spanish, English (Full Professional), data annotation, transcription, text analysis, named entity recognition, dictionary/taxonomy creation, linguistic quality evaluation

Preferred skills

AI/ML project experience, knowledge of multiple languages/dialects, familiarity with medical coding systems (ICD, CPT) or EHR

Technologies

NLP tools, annotation/labeling tools

Responsibilities

Prepare and maintain medically oriented datasets for machine learning; perform audio transcriptions in Spanish; implement text patterns to detect and extract named entities; contribute to dictionaries and taxonomies; evaluate linguistic quality and consistency of Spanish text

Seniority

Freelance, independent contributor

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