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Bruna Lorena Sousa Oliveira

@brunalorenasousaoliv

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AI Trainer and Data Annotation Specialist who evaluates audio, video, and text for AI training.

Brazil

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What I'm looking for

I'm seeking work in media evaluation, data annotation, data collection, AI training, transcription, or audio evaluation.

As an AI Trainer, I conducted audio evaluation and voice recording tasks for AI training projects, applying RLHF and SFT methodologies to improve AI model performance.

I evaluated video, text, and audio content against project guidelines, designed and optimized prompts for large language models, and performed quality assurance and response evaluation.

As a Data Annotation Specialist, I annotated and categorized data for machine learning and AI development, including text, audio, and image classification projects.

At Prefeitura Municipal de Parauapebas, I provided administrative support in various departments and organized documents and entered data.

Experience

Work history, roles, and key accomplishments

Administrative Assistant

Prefeitura Municipal de Parauapebas

Dec 2015 - Jan 2026 (10 years 1 month)

Provided administrative support in various departments, including document organization and data entry.

Data Annotation Specialist

Freelancer

Annotated and categorized data for machine learning and AI development, working on text, audio, and image classification projects. Performed object tagging and labeling across various content types.

Data Annotation Machine Learning Text Classification Audio Classification Image Classification Object Tagging And Classification Labeling

AI Trainer

Freelancer

Conducted audio evaluation and voice recording tasks for AI training projects. Applied RLHF and SFT methodologies to improve AI model performance, evaluated content, and designed prompts for large language models.

RLHF SFT Audio Evaluation Voice Recording Prompt Engineering Quality Assurance Object Tagging And Classification Labeling