Freelance Spanish Data Annotation Specialist (AI)

TL;DR

Freelance Spanish Data Annotation Specialist (AI): Preparing and curating Spanish linguistically and medically oriented datasets for machine learning and natural language processing products with an accent on annotation quality, transcription, and medical language accuracy. Focus on implementing named-entity patterns, building Spanish dictionaries and taxonomies, and solving complex data-quality challenges for healthcare AI systems.

Location: Remote; office locations listed in Barcelona, Amsterdam, and Warsaw

Company

hirify.global develops digital healthcare products and AI-driven solutions for medical professionals and patients.

What you will do

• Prepare, annotate, and maintain medically oriented Spanish datasets for machine learning initiatives.
• Perform Spanish audio transcription, align recordings with text, and correct transcription errors.
• Implement text patterns to identify names, addresses, organizations, identification numbers, and medical terms.
• Contribute to Spanish dictionaries, taxonomies, and NLP resources.
• Evaluate Spanish words, sentences, and text structures to improve linguistic consistency and data quality.
• Work independently, meet deadlines, and communicate progress and challenges proactively.

Requirements

• Native Spanish and full professional English proficiency required.
• Degree or strong background in Italian linguistics, computational linguistics, or a related field.
• Familiarity with Spanish medical terminology or experience in healthcare.
• Hands-on experience with data annotation, transcription, and labeling tools.
• Experience with text patterns, dictionaries, or NLP-related text analysis.
• Strong attention to detail, self-management, and ability to consistently meet deadlines.

Nice to have

• Experience in AI, machine learning, or data preparation projects.
• Knowledge of languages or dialects beyond Spanish and English.
• Exposure to ICD, CPT, EHR, or other medical coding and healthcare information systems.
• Previous freelance experience in annotation or linguistic projects.

Culture & Benefits

• Remote work with independent ownership of assigned projects.
• Direct communication with NLP experts.
• Flexible freelance collaboration focused on delivering high-quality work within deadlines.