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Roger Gonzalez March

Roger Gonzalez March

Multilingual AI trainer with expertise in text analysis and labeling

Spain flagBarcelona, Spain
$40.00/hrIntermediateAppenLabel StudioScale AI

Key Skills

Software

AppenAppen
Label StudioLabel Studio
Scale AIScale AI
SuperAnnotateSuperAnnotate

Top Subject Matter

No subject matter listed

Top Data Types

Geospatial Tiled ImageryGeospatial Tiled Imagery
TextText
VideoVideo

Top Task Types

Bounding Box
Classification
Data Collection
Entity Ner Classification
Geocoding

Freelancer Overview

I am an Applied Machine Learning Analyst and Urban Data Scientist with hands-on experience in curating, labeling, and evaluating datasets for AI model development. My work spans text, geospatial, and multimodal data — from annotating social media content for misinformation detection to designing labeling pipelines for urban digital twins. I have used tools like Label Studio, Prodigy, and Doccano to create high-quality labeled datasets supporting NLP, sentiment analysis, and stance detection models. With a background in theoretical physics and AI research, I bring strong analytical and modeling skills to every project. My labeling expertise is complemented by experience developing BERT-based classifiers, evaluating LLM outputs, and integrating human-in-the-loop validation workflows. I focus on ensuring data consistency, clarity, and interpretability — key factors for training reliable, transparent, and high-performing AI systems.

IntermediateCatalanEnglishSpanish

Labeling Experience

No Data Labeling experience added

Roger G. hasn’t added any AI Training or Data Labeling experience to their OpenTrain profile yet.

Education

U

Universitat Pompeu Fabra

Master's Degree, Intelligent Interactive Systems

Master's Degree
2023 - 2024
U

Universitat de Barcelona

Bachelor's Degree, Physics

Bachelor's Degree
2017 - 2021

Work History

B

Barcelona Supercomputing Center

Urban Data Scientist

Barcelona
2024 - Present
E

Eurecat

Internship Data Scientist

N/A
2024 - 2024