Sandra Sierralta

Key Skills

Software

Labelbox

Top Subject Matter

No subject matter listed

Top Data Types

Text

Top Label Types

Classification

Freelancer Overview

I am a detail-oriented Data Specialist with hands-on experience in data labeling and categorization for various projects. I excel at following complex technical guidelines to ensure high data accuracy and quality, efficiently managing large datasets while maintaining strict quality standards. My skills include data entry, content moderation, and quality assurance, and I am proficient with Google Workspace and basic data management platforms. As a native Spanish speaker with upper-intermediate English proficiency, I am comfortable working in multilingual environments and remote teams. I am committed to delivering precise, reliable training data for AI and machine learning applications.

Labeling Experience

Text Classification and Sentiment Analysis for LLM Training

LabelboxTextClassification

Provided high-quality data labeling by evaluating AI-generated responses. My tasks included ranking multiple outputs based on accuracy, tone, and safety guidelines, as well as identifying linguistic nuances to improve the model's natural language understanding

Provided high-quality data labeling by evaluating AI-generated responses. My tasks included ranking multiple outputs based on accuracy, tone, and safety guidelines, as well as identifying linguistic nuances to improve the model's natural language understanding

2025 - 2025

Education

Work History