For employers

Hire this AI Trainer

Sign in or create an account to invite AI Trainers to your job.

Invite to Job
J
João B.

João B.

Senior Offensive Security Analyst

Brazil flagBrasília, Brazil

Key Skills

Software

No software listed

Top Subject Matter

Cibersecurity
Regulatory Compliance & Risk Analys
Vulnerability Management & Pentesting

Top Data Types

TextText
DocumentDocument
Computer Code ProgrammingComputer Code Programming

Top Task Types

ClassificationClassification
Red TeamingRed Teaming
Computer Programming/CodingComputer Programming/Coding
Text GenerationText Generation
Evaluation/RatingEvaluation/Rating
Data CollectionData Collection
Text SummarizationText Summarization

Freelancer Overview

Senior Offensive Security Analyst in Contract Review, Compliance, and Legal Research. Brings 15+ years of professional experience across complex professional workflows, research, and quality-focused execution. Education includes Technologist Degree, Uniplan and Postgraduate Degree, Estácio Brasília.

Labeling Experience

"I haven't done formal data labeling work as a freelancer, but I've been an active AI user for a long time

"I haven't done formal data labeling work as a freelancer, but I've been an active AI user for a long time. In practice, I regularly evaluate AI-generated responses — comparing outputs, identifying errors, assessing tone and accuracy, and refining prompts to get better results. Some concrete examples: I built an investment application using Claude Code, wrote two e-books with ChatGPT, and have other projects currently in progress. Through this hands-on experience, I've developed a strong intuition for what makes a good AI response and where models tend to fall short."

Not specified

Education

E

Estácio Brasília

Postgraduate Degree, Network Management and Security

Postgraduate Degree
Not specified
U

Uniplan

Technologist Degree, Computer Networks

Technologist Degree
Not specified

Work History

S

Sicoob Confederação

GRC and Security Lead

Brasília
2025 - Present
S

Sicoob Confederação

Offensive Security Analyst

Brasília
2021 - 2025