GitHub profile Senior Full Stack Developer

Paulo R. Pereira Jr.

Building software systems with AI, architecture, and technical leadership.

Solutions Architect AI Specialist Data Analyst Psychologist Researcher

Paulo R. Pereira Jr. portrait Senior Solutions Architect and AI specialist with more than 25 years of experience in IT since 1998. I design and modernize large-scale distributed systems, lead AI-driven transformations, and support national data projects in Brazil, including Impostômetro and Empresômetro.

I also advocate for digital accessibility and inclusive design as an LGBTQIA+ professional with mobility limitations, keeping the user experience practical, respectful, and usable for more people.

25+
years in IT and product delivery
650+
companies supported across Latin America
AI + Data
architecture, automation, and delivery
GitHub profile LinkedIn

Repositories

Public projects

View all on GitHub

A curated view of public product experiments and personal projects I maintain on GitHub.

TypeScript

Curriculum Tools

Tool FrontEnd AI TypeScript

Local-first CV screening workspace for recruiters and hiring managers that compares resumes against job descriptions with transparent AI-assisted scoring.

Supports PDF and DOCX ingestion with extraction tailored to candidate summaries.
Produces ranking rationale, fit indicators, and quick interview checkpoints.
Works with provider APIs like Gemini, OpenAI, or DeepSeek through user-managed keys.
Designed for privacy-aware teams that need faster triage without losing review quality.
Provider setup screen — connect Gemini, OpenAI, or DeepSeek before using the tools
Provider setup
Candidate CV Reviewer — AI analysis of fit, strengths, and interview questions
Candidate Reviewer
HR CV Ranking & Matrix — batch comparison of multiple candidates with ROI analytics
HR CV Ranking & Matrix
Quality Evaluation Harness — score drift and ranking stability monitoring across prompt and model changes
Quality Harness
Open the tool Open repository
TypeScript

AI Image Detector

Tool FrontEnd AI TypeScript React

Privacy-first browser tool that detects AI-generated images using gradient field PCA and frequency domain analysis — no uploads, no backend, no AI model required.

Gradient field PCA (Sobel + eigendecomposition) for anisotropy, coherence, and energy metrics.
2D FFT spectral analysis to identify diffusion model artefacts and compression patterns.
Viridis-palette gradient heatmap for visual inspection of suspicious regions.
Verdicts: REAL, AI-GENERATED, SUSPICIOUS, POSSIBLE AI, with per-metric breakdown.
AI Image Detector upload and analysis landing screen
Live detector screen
Open the tool Open repository
Python

Rosilda - Mapas de calor

Study Data Python

English: This project aims to create heat maps for Brazil using Python for my friend Rosilda. It uses 2024 data on the number of higher education institutions by Brazilian region across the groups Anima, Cogna, Cruzeiro do Sul, Ser Educacional, Vitru, and Yduqs.

Português: Este projeto tem como objetivo a criação de mapas de calor para o Brasil, utilizando a linguagem de programação Python, para a minha amiga Rosilda. Foram utilizados dados do número de instituições de ensino superior por região do Brasil pertencentes aos grupos Ânima, Cogna, Cruzeiro do Sul, Ser Educacional, Vitru e Yduqs em 2024.

Open repository Open library (Rosilda's Thesis)