I'm Leonardo, a 25-year-old Data Annotator and Data Analyst working with technology companies and as a freelancer since 2025. I specialize in data annotation, data analysis, and artificial intelligence — transforming raw and complex data into structured, meaningful insights that fuel smarter models and data-driven decisions. My work bridges the gap between human understanding and machine learning, helping businesses build more accurate and efficient AI systems.

Leonardo Fabricio

I'm Leonardo, a 25-year-old Data Annotator and Data Analyst working with technology companies and as a freelancer since 2025. I specialize in data annotation, data analysis, and artificial intelligence — transforming raw and complex data into structured, meaningful insights that fuel smarter models and data-driven decisions. My work bridges the gap between human understanding and machine learning, helping businesses build more accurate and efficient AI systems.

Available to hire

I’m Leonardo, a 25-year-old Data Annotator and Data Analyst working with technology companies and as a freelancer since 2025.
I specialize in data annotation, data analysis, and artificial intelligence — transforming raw and complex data into structured, meaningful insights that fuel smarter models and data-driven decisions. My work bridges the gap between human understanding and machine learning, helping businesses build more accurate and efficient AI systems.

See more

Language

Portuguese
Fluent
Italian
Fluent
English
Fluent
German
Advanced
Spanish; Castilian
Fluent

Work Experience

Data Annotator at Thoth AI
January 1, 2025 - Present
Responsible for annotating and labeling data sets to train AI models. Detecting and correcting errors and inconsistencies in AI outputs. Identifying data patterns to improve model accuracy and performance.
Housekeeping Supervisor at Hof Maran Hotel
December 1, 2021 - February 1, 2025
Ensured room quality control and provided excellent guest service. Organized and supervised staff teams, managed supply requisitions, inventory, and overall service quality.
Sales Manager at King Store
December 1, 2017 - August 1, 2021
Conducted sales and market trend analysis to optimize business performance. Managed inventory, cash flow, and sales reports using accounting spreadsheets. Oversaw staff performance and promoted an efficient and customer-focused sales environment.

Education

Add your educational history here.

Qualifications

Add your qualifications or awards here.

Industry Experience

Software & Internet, Professional Services, Retail, Travel & Hospitality, Other