Position Summary

This is a fully remote, hourly contractor role supporting AI data and language projects on a project-based, adaptable hour basis. Project scopes vary and may include:

- Data annotation: labeling, classifying, and structuring documents, tables, and other content to support AI training datasets.

- LLM evaluation: reviewing AI-generated responses for accuracy, reasoning quality, coherence, and cultural/linguistic appropriateness.

- Content generation: writing high-quality prompts and model responses, or recording high-quality voice samples, to guide AI learning across diverse topics.

- Localization QA: ensuring terminology, tone, cultural nuance, and locale-specific details (units, references, names, dates) are consistently accurate across outputs.

You will apply senior-level Castilian Spanish localization and translation judgment alongside minimum C1 English proficiency to ensure terminology, tone, and cultural nuance are consistently accurate across use cases.

Profile Requirements

- Bachelor's degree or higher, preferably in Translation, Linguistics, Localization, Communications, or a related field.

- Native or near-native Castilian Spanish proficiency with strong writing and editing skills.

- Minimum C1 English proficiency (reading/writing) for interpreting prompts, source materials, and evaluation guidelines.





- Excellent editorial judgment in register, tone, punctuation, inclusivity, and cultural nuance, with extreme attention to detail.

- Ability to identify meaning drift, ambiguity, locale inconsistencies, and subtle errors, and to explain corrections clearly in writing.

- Ability to rigorously fact-check localized content (units, references, names, dates) using reliable sources and consistent reasoning.

- Ability to identify reasoning gaps, methodological errors, and unclear explanations even when language is fluent.

- Reliable, self-directed, and able to deliver consistent quality with clear communication and responsiveness across time zones.

Preferred Experience

- Professional localization or translation experience.

- Previous experience with AI data training, annotation, or evaluation.

- Familiarity with MQM/LQA concepts (severity, category, and root-cause thinking) for consistent quality decisions.

- Familiarity with CAT tools and QA workflows.

About CNTXT AI

CNTXT AI builds artificial intelligence products and data solutions with a focus on making AI accurate, safe, and globally relevant for impact. Our work spans data services, custom AI solutions, and proprietary AI products, with deep expertise in Arabic-native and secure, sovereign solutions.

📌 Castilian Spanish/English Bilingual AI Data Annotator & Evaluator (Remote, Hourly Contractor) (Madrid)
🏢 CNTXT AI
📍 Madrid