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Melina Aldana Perez

Melina Aldana Perez

5.01 reviews

AI Trainer

ARGENTINA flag
Rosario, Argentina
$14.00/hrIntermediateData Annotation TechLabelboxMercor

Key Skills

Software

Data Annotation TechData Annotation Tech
LabelboxLabelbox
MercorMercor
OneFormaOneForma
Internal/Proprietary Tooling

Top Subject Matter

LLM evaluation in Spanish
Text Generation in Spanish and English
Text, Video and Image Classification

Top Data Types

AudioAudio
ImageImage
TextText

Top Label Types

Audio Recording
Bounding Box
Classification
Evaluation Rating
Prompt Response Writing SFT
Translation Localization

Freelancer Overview

I am a bilingual professional with hands-on experience in AI training, data annotation, transcription, and subtitling, working fluently in both Spanish and English. My background includes crafting and evaluating prompts for chatbot fine-tuning, labeling and classifying multilingual text data, and ensuring quality control across AI projects. I am skilled at narrative content annotation, dialogue evaluation, and AI response assessment, with a strong attention to detail and a passion for improving interactive narratives. My digital literacy with tools like Google Workspace and Microsoft Office, combined with my experience in creative writing and feedback collaboration, allows me to deliver high-quality, consistent results in natural language processing and language model training environments.

Intermediate5.0SpanishEnglish

Labeling Experience

OneForma

Image Labeling

OneformaImageBounding Box
Labeled images from a large batch which contained sports images mostly showing sports objects or football-related actions.

Labeled images from a large batch which contained sports images mostly showing sports objects or football-related actions.

2025 - 2025

English Text Classification

Internal Proprietary ToolingTextClassification
The project focuses on classification and evaluation of text contents and ensuring they have the correct tags that an AI model have selected for them

The project focuses on classification and evaluation of text contents and ensuring they have the correct tags that an AI model have selected for them

2025 - 2025
Data Annotation Tech

Prompt Engineer and Response Evaluation in Spanish

Data Annotation TechTextEvaluation RatingPrompt Response Writing SFT
Designed challenging prompts in Spanish in order to find the AOI and issues of the models based on specific guideleness. I evaluated each model´s response, reported issues and choosed the better response to continue with more iterations.

Designed challenging prompts in Spanish in order to find the AOI and issues of the models based on specific guideleness. I evaluated each model´s response, reported issues and choosed the better response to continue with more iterations.

2024 - 2025

AI Trainer

Internal Proprietary ToolingTextEvaluation RatingPrompt Response Writing SFT
Tagged and categorized text data to support ML model training. Maintained high accuracy rates under tight deadlines.

Tagged and categorized text data to support ML model training. Maintained high accuracy rates under tight deadlines.

2024 - 2024

Spanish & English Audio Transcription

Internal Proprietary ToolingAudioTranslation LocalizationAudio Recording
The project consisted of recognizing emotions from Spanish audios, transcribing Spanish and English Audios and translating specific words from English to Spanish.

The project consisted of recognizing emotions from Spanish audios, transcribing Spanish and English Audios and translating specific words from English to Spanish.

2024 - 2024

Education

T

Testing Para Todos

Manual Testing , Manual Testing

Manual Testing
2023 - 2024
I

Instituto Immanuel Kant

Bacherlor´s in Physical Education, Physical Education

Bacherlor´s in Physical Education
2021 - 2024

Work History

M

Mercor

Spanish Writer

Rosario
2025 - Present
A

Amara Platform

Subtitler

Remote
2024 - Present