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Carina Martins

Carina Martins

Versatile Data Annotator with expertise in Text, Image & Video tasks

Portugal flagCastro Marim, Portugal
$15.00/hrEntry LevelCrowdsourceData Annotation TechLabelbox

Key Skills

Software

CrowdSourceCrowdSource
Data Annotation TechData Annotation Tech
LabelboxLabelbox
MindriftMindrift
OneFormaOneForma
Other

Top Subject Matter

No subject matter listed

Top Data Types

AudioAudio
ImageImage
TextText

Top Task Types

Audio Recording
Classification
Data Collection
Translation Localization

Freelancer Overview

I am a detail-oriented professional with experience in data labeling and AI training workflows, specializing in both text and image annotation. My background in administrative and financial support has strengthened my organizational skills, accuracy, and ability to follow complex guidelines, which translates directly into high-quality data annotation and evaluation. I have worked with Natural Language Processing (NLP) tasks such as text classification, sentiment analysis, and prompt evaluation, as well as Computer Vision projects involving image labeling and quality review. Skilled in ensuring consistency and precision, I bring reliability, adaptability, and a commitment to delivering clean and accurate datasets that improve AI performance.

Entry LevelEnglishSpanishPortuguese

Labeling Experience

Multilingual Data Work:

OtherTextQuestion AnsweringTranslation Localization
Performed annotation and evaluation tasks in English, Portuguese, and Spanish, with a focus on linguistic nuance, cultural context, and accuracy.

Performed annotation and evaluation tasks in English, Portuguese, and Spanish, with a focus on linguistic nuance, cultural context, and accuracy.

2025
OneForma

Text Annotation & NLP Tasks

OneformaTextTranslation LocalizationPrompt Response Writing SFT
Classified and annotated large sets of text data for sentiment analysis, intent recognition, and topic categorization. Experienced in prompt evaluation, grammar checking, and text quality assessment for LLM training.

Classified and annotated large sets of text data for sentiment analysis, intent recognition, and topic categorization. Experienced in prompt evaluation, grammar checking, and text quality assessment for LLM training.

2025

Education

M

Master D Faro

Professional Course, Administrative Assistance

Professional Course
2020 - 2021

Work History

F

Funeral Agency Portugal

Administrative Assistant

N/A
2021 - Present