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Sandra Lorente

Sandra Lorente

AI Data Quality Analyst – Written Content Evaluation

Spain flagBarcelona, Spain
$25.00/hrEntry LevelData Annotation Tech

Key Skills

Software

Data Annotation TechData Annotation Tech

Top Subject Matter

AI-generated text/data
customer interactions

Top Data Types

TextText
DocumentDocument

Top Task Types

ClassificationClassification
Entity (NER) ClassificationEntity (NER) Classification
Text GenerationText Generation
Text SummarizationText Summarization
Evaluation/RatingEvaluation/Rating
Prompt + Response Writing (SFT)Prompt + Response Writing (SFT)
Fine-tuningFine-tuning
Question AnsweringQuestion Answering
RLHFRLHF

Freelancer Overview

AI Data Quality Analyst – Written Content Evaluation. Brings 27+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include Internal and Proprietary Tooling. Education includes Master of Science, UNADE – Universidad Americana de Europa (2024). AI-training focus includes data types such as Text and labeling workflows including Evaluation and Rating.

Entry LevelEnglishSpanishFrenchItalian

Labeling Experience

AI Data Quality Analyst – Written Content Evaluation

Text
Oversaw evaluation of large volumes of written content for accuracy, reasoning, and consistency. Applied structured QA frameworks to assess and enhance the quality of AI-generated and human-written responses. Delivered actionable feedback to improve data quality and AI output reliability. • Conducted error detection and pattern recognition across textual data • Used rubrics and guidelines for consistent evaluation • Collaborated with teams to address ambiguous cases and edge scenarios • Enhanced AI output by identifying recurring response issues

Oversaw evaluation of large volumes of written content for accuracy, reasoning, and consistency. Applied structured QA frameworks to assess and enhance the quality of AI-generated and human-written responses. Delivered actionable feedback to improve data quality and AI output reliability. • Conducted error detection and pattern recognition across textual data • Used rubrics and guidelines for consistent evaluation • Collaborated with teams to address ambiguous cases and edge scenarios • Enhanced AI output by identifying recurring response issues

2000 - Present

Education

U

UNADE – Universidad Americana de Europa

Master of Science, Artificial Intelligence

Master of Science
2024

Work History

A

Avis Budget Group

Customer Support Operations Supervisor

Barcelona
2000 - Present