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Maria Gil

Maria Gil

Expert Data Annotator for Images, Video, Text, and AI Training Datasets

Spain flagLeón, Spain
$12.00/hrExpertAws SagemakerAxiom AIClickworker

Key Skills

Software

AWS SageMakerAWS SageMaker
Axiom AI
ClickworkerClickworker
CloudFactoryCloudFactory
CrowdSourceCrowdSource
CVATCVAT
Data Annotation TechData Annotation Tech
DataloopDataloop
DatasaurDatasaur
Deep SystemsDeep Systems
Figure EightFigure Eight
Google Cloud Vertex AIGoogle Cloud Vertex AI
HumanaticHumanatic
Img Lab
LabelboxLabelbox
Label StudioLabel Studio
LightTagLightTag
LionbridgeLionbridge
Mighty AIMighty AI
MindriftMindrift
OneFormaOneForma
OpenCV AI Kit (OAK)OpenCV AI Kit (OAK)
Redbrick AIRedbrick AI
Scale AIScale AI
Snorkel AISnorkel AI
Surge AISurge AI
TolokaToloka
TelusTelus
V7 LabsV7 Labs
Internal/Proprietary Tooling

Top Subject Matter

No subject matter listed

Top Data Types

AudioAudio
ImageImage
VideoVideo

Top Task Types

Classification
Computer Programming Coding
Data Collection
Function Calling
Mapping

Freelancer Overview

I am an experienced data annotator and AI training specialist with a strong background in labeling images, videos, and text for machine learning applications. Over the years, I have contributed to projects across autonomous vehicles, e-commerce, and multimedia, providing high-quality annotations that enhance model accuracy and performance. My expertise includes object detection, segmentation, classification, and NLP data labeling, ensuring datasets meet rigorous standards for AI training. I am proficient in a variety of data labeling tools such as Labelbox, CVAT, and SuperAnnotate, and I am comfortable working with both structured and unstructured data. Known for my attention to detail, consistency, and efficiency, I have successfully completed large-scale annotation projects while maintaining high-quality standards. My goal is to contribute to AI initiatives by delivering precise, reliable, and well-documented training data.

ExpertFrenchPolishEnglishItalianSpanish

Labeling Experience

Scale AI

Multimedia Data Annotation Specialist for AI Training

Scale AITextBounding BoxEntity Ner Classification
Performed large-scale annotation projects across images, videos, text, and audio for AI and machine learning applications. Tasks included object detection, segmentation, tracking, entity tagging, text summarization, emotion recognition, and audio labeling. Managed datasets ranging from 50,000 to 200,000+ samples, ensuring high-quality annotations that improved AI model accuracy. Applied strict quality control measures, maintained consistency, and followed detailed annotation guidelines to deliver reliable and actionable training data.

Performed large-scale annotation projects across images, videos, text, and audio for AI and machine learning applications. Tasks included object detection, segmentation, tracking, entity tagging, text summarization, emotion recognition, and audio labeling. Managed datasets ranging from 50,000 to 200,000+ samples, ensuring high-quality annotations that improved AI model accuracy. Applied strict quality control measures, maintained consistency, and followed detailed annotation guidelines to deliver reliable and actionable training data.

2024
Labelbox

Autonomous Vehicle Image & Video Annotation Specialist

LabelboxVideoBounding BoxPoint Key Point
Worked on large-scale annotation projects for self-driving vehicle datasets, including labeling pedestrians, vehicles, traffic signs, and road infrastructure in both images and videos. Tasks included bounding boxes, segmentation masks, object tracking, and quality validation to ensure high accuracy for AI training models. Collaborated with a team of annotators to maintain consistency across datasets exceeding 100,000 frames, following strict annotation guidelines and quality assurance protocols.

Worked on large-scale annotation projects for self-driving vehicle datasets, including labeling pedestrians, vehicles, traffic signs, and road infrastructure in both images and videos. Tasks included bounding boxes, segmentation masks, object tracking, and quality validation to ensure high accuracy for AI training models. Collaborated with a team of annotators to maintain consistency across datasets exceeding 100,000 frames, following strict annotation guidelines and quality assurance protocols.

2022
Labelbox

NER (Named Entity Recognition) Specialist for LLM Training

LabelboxImageRelationshipClassification
Annotated and labeled large-scale text datasets for training large language models, focusing on named entity recognition (NER) for entities like persons, organizations, locations, dates, and products. Tasks included entity tagging, relationship labeling, and classification to ensure high-quality training data. Reviewed and validated annotations for consistency and accuracy across 50,000+ text samples, adhering to strict annotation guidelines and quality control processes.

Annotated and labeled large-scale text datasets for training large language models, focusing on named entity recognition (NER) for entities like persons, organizations, locations, dates, and products. Tasks included entity tagging, relationship labeling, and classification to ensure high-quality training data. Reviewed and validated annotations for consistency and accuracy across 50,000+ text samples, adhering to strict annotation guidelines and quality control processes.

2020 - 2021

Education

U

University Isabel I - IEAD

Master's Degree, Fintech and Blockchain

Master's Degree
2024 - 2024
U

University Isabel I - IEAD

Master's Degree, Big Data

Master's Degree
2024 - 2024

Work History

B

Banco Santander

Data Scientist & Big Data Analyst

Salamanca
2025 - Present
A

Arsoft Tech

Data Scientist Jr.

Salamanca
2024 - 2024