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Nathalia Simoes

Nathalia Simoes

AI Analyst - Language Model Optimization

IRELAND flag
Dublin, Ireland
$20.00/hrIntermediateInternal Proprietary Tooling

Key Skills

Software

Internal/Proprietary Tooling

Top Subject Matter

No subject matter listed

Top Data Types

AudioAudio
DocumentDocument
ImageImage
TextText
VideoVideo

Top Label Types

Audio Recording
Classification
Data Collection
Evaluation Rating
Prompt Response Writing SFT
Question Answering
Text Generation
Transcription
Translation Localization

Freelancer Overview

I bring extensive experience in AI model evaluation, data annotation, and quality assurance, with a strong focus on optimizing language models for accuracy, safety, and compliance. My current work as an AI Analyst at Meta involves conducting risk and quality assessments, collaborating with cross-functional teams to refine models, and mentoring colleagues on best practices for data labeling and annotation. I am skilled in Microsoft Office Suite, CRM platforms, and have foundational knowledge of Power BI, SAP, and Tableau. My background leading multicultural teams and managing large-scale projects in contact centers, sales, and technical support has honed my attention to detail and process improvement abilities. I am passionate about driving the quality and reliability of AI training data, and I thrive in dynamic, fast-paced environments where data integrity and continuous improvement are top priorities.

IntermediateEnglishPortugueseSpanish

Labeling Experience

Generative AI Annotator Analyst

Internal Proprietary ToolingTextClassificationQuestion Answering
Ongoing GenAI data labeling and evaluation project focused on improving large language model safety and response quality for a major social media and AI ecosystem. I review user prompts and AI-generated outputs and label them according to detailed content risk and quality standards, documenting clear rationales to support consistency and downstream training. Tasks include safety classification, response quality rating, identifying policy violations, and handling complex edge cases with strong attention to nuance, context, and multilingual considerations. Quality measures include strict guideline adherence, calibration alignment, consistency checks, and feedback loops to reduce ambiguity and improve labeling reliability. I also support process improvement by flagging recurring error patterns, helping clarify unclear guideline areas, and mentoring teammates on difficult cases to increase overall annotation accuracy and standardization.

Ongoing GenAI data labeling and evaluation project focused on improving large language model safety and response quality for a major social media and AI ecosystem. I review user prompts and AI-generated outputs and label them according to detailed content risk and quality standards, documenting clear rationales to support consistency and downstream training. Tasks include safety classification, response quality rating, identifying policy violations, and handling complex edge cases with strong attention to nuance, context, and multilingual considerations. Quality measures include strict guideline adherence, calibration alignment, consistency checks, and feedback loops to reduce ambiguity and improve labeling reliability. I also support process improvement by flagging recurring error patterns, helping clarify unclear guideline areas, and mentoring teammates on difficult cases to increase overall annotation accuracy and standardization.

2024

Education

T

Technological University Dublin

Postgraduate Certificate, Digital Leadership and Transformation

Postgraduate Certificate
2025 - 2025
A

Anhanguera University of Campinas

Master of Business Administration, Business Management

Master of Business Administration
2017 - 2018

Work History

M

META

AI Analyst

Dublin
2024 - Present
B

Bissoli Motors Limited

Manager

Dublin
2024 - 2024