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Francisco Soto Castillo

Francisco Soto Castillo

Data Labeling Specialist

Costa Rica flagSan Jose, Costa Rica
$10.00/hrIntermediateAws SagemakerAppenClickworker

Key Skills

Software

AWS SageMakerAWS SageMaker
AppenAppen
ClickworkerClickworker
Internal/Proprietary Tooling

Top Subject Matter

Retail data classification.
LLM Image classification.
LLM questions and answers.

Top Data Types

ImageImage
TextText
VideoVideo

Top Task Types

Classification
Object Detection
Segmentation
Text Generation
Text Summarization

Freelancer Overview

Data Associate on Amazon.

IntermediateEnglishSpanish

Labeling Experience

Machine Learning Data Associate.

Internal Proprietary ToolingTextTrackingEvaluation Rating
Working from home performing data annotation for text tasks that improve Amazon’s customer service bots, focusing on digital devices, subscriptions, and website AI features. Projects are executed in AWS SageMaker, including creating labeling jobs, adhering to privacy standards, and enabling a self-sufficient workflow. ● Labeled 100–200 tasks per project, supporting chatbot AI development. ● Achieved 80–100% consensus rates; datasets delivered with 95%+ acceptance. ● Improved workflows and clarified SOPs to enhance annotation consistency. ● Collaborated in paired annotation projects with team consensus meetings to ensure data quality. ● Coordinated with stakeholders, including data analysts and AI engineers, across multiple concurrent projects. Took full ownership of tasks, consistently delivering projects on time with high accuracy and efficiency, contributing to overall team success in enhancing AI performance.

Working from home performing data annotation for text tasks that improve Amazon’s customer service bots, focusing on digital devices, subscriptions, and website AI features. Projects are executed in AWS SageMaker, including creating labeling jobs, adhering to privacy standards, and enabling a self-sufficient workflow. ● Labeled 100–200 tasks per project, supporting chatbot AI development. ● Achieved 80–100% consensus rates; datasets delivered with 95%+ acceptance. ● Improved workflows and clarified SOPs to enhance annotation consistency. ● Collaborated in paired annotation projects with team consensus meetings to ensure data quality. ● Coordinated with stakeholders, including data analysts and AI engineers, across multiple concurrent projects. Took full ownership of tasks, consistently delivering projects on time with high accuracy and efficiency, contributing to overall team success in enhancing AI performance.

2024

LLM Data Associate

Internal Proprietary ToolingImageEvaluation RatingPrompt Response Writing SFT
Worked on-site processing data directly for the Alexa AI system, annotating text, images, audio, and video while adhering to strict privacy and security standards. Contributed to global consensus projects, assisting colleagues in understanding processes to improve data accuracy. This was a high-volume role requiring punctuality and discipline, completing a large number of tasks daily while maintaining excellent efficiency and accuracy metrics. ● Performed 60–120 daily labeling tasks, maintaining 75–85% accuracy. ● Collaborated on SOP redesigns, reducing ambiguity and errors. ● Assisted colleagues in global consensus projects to ensure high-quality datasets. ● Maintained strict adherence to privacy and security standards while handling sensitive data. ● Demonstrated consistent punctuality and discipline in a fast-paced, high-volume environment.

Worked on-site processing data directly for the Alexa AI system, annotating text, images, audio, and video while adhering to strict privacy and security standards. Contributed to global consensus projects, assisting colleagues in understanding processes to improve data accuracy. This was a high-volume role requiring punctuality and discipline, completing a large number of tasks daily while maintaining excellent efficiency and accuracy metrics. ● Performed 60–120 daily labeling tasks, maintaining 75–85% accuracy. ● Collaborated on SOP redesigns, reducing ambiguity and errors. ● Assisted colleagues in global consensus projects to ensure high-quality datasets. ● Maintained strict adherence to privacy and security standards while handling sensitive data. ● Demonstrated consistent punctuality and discipline in a fast-paced, high-volume environment.

2023 - 2024

Education

U

Universidad Politécnica

Bachelor, Data Analyst

Bachelor
2023 - 2024
U

Universidad Politécnica Internacional

Data Analyst Technician. , Data Analyst.

Data Analyst Technician.
2023 - 2024

Work History

A

Amazon

Machine Learning Data Associate.

San Jose
2024 - Present
A

Amazon

Seller Partner Support Associate Sr.

San Jose
2024 - Present