Bruno Stivanin
@brunostivanin
Self-motivated AI Trainer with expertise in language evaluation.
BrazilWhat I'm looking for
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.
Core Competencies
AI & LLM Evaluation (English and Brazilian Portuguese), AI Quality & Safety, Prompt/Response SxS, Data Annotation (Text, Image, Video, Audio), RLHF, Fact-Checking, Proofreading, Content Moderation.
Language Proficiency
Portuguese (Native), English (Fluent), Spanish (Fluent), French (Elementary).
Experience
Work history, roles, and key accomplishments
Video annotation for AI training data.
Annotate and evaluate Portuguese language content.
AI Trainer
Meridial Marketplace by Invisible
Apr 2026 - Present (3 months)
Review and evaluate AI-generated responses within assigned projects.
Data Annotator
Latamways
Nov 2025 - Present (8 months)
Review and annotate audio and video content.
Annotate and label audio and video data.
Data Annotator/AI Trainer
Abaka AI
Oct 2025 - Present (9 months)
Annotate and evaluate image, video, and audio data to support AI model training and improvement.
Annotate data accurately, provide feedback on patterns, and ensure quality and consistency throughout the process.
Provide remote AI training for Portuguese language models, specializing in Artificial Intelligence (AI) evaluation to enhance model performance.
Conduct remote AI evaluation tasks, focusing on improving AI models.
Train and evaluate AI models to enhance their ability to generate high-quality Brazilian Portuguese text, contributing to data integrity and data entry processes.
AI Trainer
VerityLab AI
Dec 2025 - Apr 2026 (4 months)
Contract. Dec 2025 – Apr 2026.
Labeled, annotated, and evaluated datasets (text, audio, video) for AI training.
Online Tutor
LatinHire
Jul 2022 - Mar 2025 (2 years 8 months)
Answered and proofread questions from various subjects.
Provided private English lessons to students. Gained extensive experience in teaching English as a Second Language.
Administrative Intern
SANASA – Water Supply and Sanitation Company S/A of Campinas
May 2012 - Dec 2012 (7 months)
Handled administrative tasks, including managing emails, documents, reports, and schedules. Scheduled activities for the Minha Escola na SANASA Program.
Evaluated and reviewed audio recordings and transcriptions (short-term project).
Education
Degrees, certifications, and relevant coursework
Senac Mogi Guaçu – SP – Brazil
Technical Course in Human Resources, Human Resources
2017 - 2018
ESAMC Campinas – Brazil
MBA in Marketing Management, Marketing Management
2014 - 2015
PUC-Campinas – Brazil
Bachelor’s in Business Administration (Emphasis on Foreign Trade), Business Administration
2008 - 2012
Tech stack
Software and tools used professionally
Availability
Location
BrazilAuthorized to work in
Social media
Job categories
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