I'm an AI Trainer and Data Annotator specializing in Brazilian Portuguese, with experience in training, evaluating, and annotating AI models to improve text quality. I also have a solid foundation in education, having worked as an English Teacher and Online Tutor.…

Bruno Stivanin

I'm an AI Trainer and Data Annotator specializing in Brazilian Portuguese, with experience in training, evaluating, and annotating AI models to improve text quality. I also have a solid foundation in education, having worked as an English Teacher and Online Tutor.…

Available to hire

I’m an AI Trainer and Data Annotator specializing in Brazilian Portuguese, with experience in training, evaluating, and annotating AI models to improve text quality. I also have a solid foundation in education, having worked as an English Teacher and Online Tutor.

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Skills

Experience Level

Language

Portuguese
Fluent
English
Fluent
Spanish; Castilian
Fluent
French
Beginner

Work Experience

Data Annotator at RWS Group
September 1, 2025 - Present
Annotate data accurately and consistently according to predefined guidelines in the required language. Provide feedback regarding observed patterns in the annotated data and contribute to process improvements. Maintain high attention to detail and quality throughout the annotation process.
AI Trainer for Portuguese at Alignerr
January 1, 2025 - Present
Provide remote AI training for Portuguese language models, specializing in Artificial Intelligence evaluation to enhance model performance.
AI Evaluator at Translated
November 1, 2024 - Present
Conduct remote AI evaluation tasks, focusing on improving AI models.
Brazilian Portuguese Writer for AI Training at Outlier
May 31, 2024 - Present
Train and evaluate AI models to enhance their ability to generate high-quality Brazilian Portuguese text, contributing to data integrity and data entry processes.
Online Tutor at LatinHire
March 1, 2025 - October 9, 2025
Answered and proofread questions from various subjects; delivered remote tutoring.
Private English Teacher at Self-employed
March 1, 2025 - October 9, 2025
Provided private English lessons; gained extensive experience in teaching English as a Second Language.
Administrative Intern at SANASA Campinas
April 30, 2012 - December 30, 2012
Requested services, received and forwarded emails, handled general dispatches, and managed the delivery and receipt of documents, letters, protocols, and memos. Performed general administrative tasks, including telephone and in-person service, and prepared spreadsheets, documents, and reports. Scheduled activities for the Minha Escola na SANASA Program.
Data Annotator/AI Trainer at Abaka AI
October 7, 2025 - Present
Annotate and evaluate image, video, and audio data to support AI model training and improvement.
Data Annotator at Latamways
November 30, 2025 - Present
Review and annotate audio and video content.
Audio/Video Annotator at Uber AI Solutions
November 28, 2025 - Present
Annotate and label audio and video data.
AI Trainer at VerityLab AI
December 20, 2025 - April 2, 2026
Labeled, annotated, and evaluated datasets (text, audio, video) for AI training.
AI Trainer at Meridial Marketplace by Invisible
April 20, 2026 - Present
Review and evaluate AI-generated responses within assigned projects.
Portuguese Data Annotator at TaskUs
May 12, 2026 - Present
Annotate and evaluate Portuguese language content.
Video Data Annotator/AI Trainer at Micro1
May 10, 2026 - Present
Video annotation for AI training data.

Education

Technical Course in Human Resources at Senac Mogi Guaçu – SP – Brazil
January 1, 2017 - December 31, 2018
MBA in Marketing Management at ESAMC Campinas – Brazil
January 1, 2014 - December 31, 2015
Bachelor’s in Business Administration (Emphasis on Foreign Trade) at PUC Campinas – Brazil
January 1, 2008 - December 31, 2012
Technical Course in Human Resources at Senac Mogi Guaçu – SP – Brazil
January 1, 2017 - January 1, 2018
MBA in Marketing Management at ESAMC Campinas – Brazil
January 1, 2014 - January 1, 2015
Bachelor’s in Business Administration (Emphasis on Foreign Trade) at PUC - Campinas – Brazil
January 1, 2008 - January 1, 2012
Technical Course in Human Resources at Senac Mogi Guaçu – SP
January 1, 2017 - January 1, 2018
MBA in Marketing Management at ESAMC Campinas – Brazil
January 1, 2014 - January 1, 2015
Bachelor’s in Business Administration (Emphasis on Foreign Trade) at PUC-Campinas – Brazil
January 1, 2008 - January 1, 2012
Technical Course in Human Resources at Senac Mogi Guaçu
January 1, 2017 - January 1, 2018
MBA in Marketing Management at ESAMC Campinas
January 1, 2014 - January 1, 2015
Bachelor’s in Business Administration (Emphasis on Foreign Trade) at PUC Campinas
January 1, 2008 - January 1, 2012
Technical Course in Human Resources at SENAC Mogi Guaçu – SP – Brazil
January 1, 2017 - January 1, 2018
MBA in Marketing Management at ESAMC Campinas – Brazil
January 1, 2014 - January 1, 2015
Bachelor’s in Business Administration (Emphasis on Foreign Trade) at PUC-Campinas – Brazil
January 1, 2008 - January 1, 2012
Technical Course in Human Resources at Senac Mogi Guaçu – SP – Brazil
January 1, 2017 - January 1, 2018
MBA in Marketing Management at ESAMC Campinas – Brazil
January 1, 2014 - January 1, 2015
Bachelor’s in Business Administration (Emphasis on Foreign Trade) at PUC-Campinas – Brazil
January 1, 2008 - January 1, 2012

Qualifications

Add your qualifications or awards here.

Industry Experience

Education, Software & Internet, Professional Services, Other, Media & Entertainment

Skills

Experience Level