Matheus Fontes
AI Training Specialist LLM Data Annotator Especialista Em Treinamento De IA Anotador De LLM
Brazil
Summary
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Rockstar🎓
Top SchoolMatheus Fontes is an AI Training Specialist and customer experience professional with 7–8 years of hands-on experience in service desk operations, client support, and LLM data annotation. He blends deep customer-facing expertise—from immigration services to high-volume chat and call centers—with practical skills in evaluating and refining AI outputs for accuracy, safety, and clarity. At iMerit he designs prompts, detects hallucinations and bias, and maintains high-quality annotation standards, while freelance and side projects show his curiosity for front-end development. Matheus is also a front-end developer and computer science student who has built playful automation like a JavaScript script that sends the Shrek script line-by-line via WhatsApp, highlighting a pragmatic, experimental approach to solving problems. Adaptable and analytically minded, he excels at translating real-world customer insights into improvements for AI-driven systems.
7 years of coding experience
1 year of employment as a software developer
Licentiate degree, English Language and Literature, General, Licentiate degree, English Language and Literature, General at Universidade Federal de Sergipe
Github Skills (4)
whatsapp10
javascript10
front-end-development9
web-automation9
Programming languages (5)
Github contributions (5)
Matt-Fontes/SendScriptWhatsApp
Nov 2020 - Aug 2022
Script para enviar o Roteiro do filme Shrek, linha por linha, no WhatsApp
Role in this project:
Front-end Developer
Front-end DeveloperContributions:3 reviews, 15 commits, 7 PRs in 1 year 9 months
Contributions summary:Matheus's contributions primarily involve the development of a JavaScript-based script designed to send a line-by-line Shrek movie script through WhatsApp. They created a JavaScript file to execute the script and then made subsequent updates to refine the script's functionality. This includes adjustments to the timing of sending messages and modifications to the element selectors used for interacting with the WhatsApp web interface.
whatsapp
Matt-Fontes/BBBstatistics
Feb 2021 - Mar 2021
Contributions:67 commits, 66 pushes, 1 branch in 27 days
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