Freelancers using Python in São Paulo
Freelancers using Python in São Paulo
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Sharles Maurício Mariano
A2INET – Alzheimer’s Disease MRI Classification
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10
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Andre Muniz
I'm currently building Omnicrm.chat (http://OmniCRM.chat). A CRM and multichannel communication platform designed to keep customer conversations, sales opportunities, and operational workflows in a single workspace. Most teams still manage WhatsApp, Telegram, email, proposals, tasks, and customer records across multiple disconnected tools. The result is lost context, duplicated work, and a fragmented customer experience. With OmniCRM.chat (http://OmniCRM.chat), conversations can evolve into opportunities, projects, and tasks without manual data entry. The goal is to connect communication, CRM, and execution into one platform, while creating a foundation for future AI-driven automation across the entire customer lifecycle.
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Henrique Oliveira Dos Santos
HenriqueOs98/sb-backend-challenge
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7
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Guilherme Farinassi
Bug Bounty Research - Web Vulnerability Discovery Conducted independent bug bounty research on public VDP and paid programs (Bugcrowd/HackerOne). Discovered and reported multiple valid vulnerabilities including IDOR exposing PII, stored XSS in user-controlled fields, SSRF via internal metadata endpoint, authentication bypass via JWT manipulation, and sensitive data exposure through misconfigured S3 buckets. Findings spanned government agencies, SaaS platforms, and financial services targets. Documented all findings with full reproduction steps, CVSS scoring, and business impact analysis following responsible disclosure guidelines.
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Fernando Freitas
Insights AI | Web app for auto data analysis
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Thiago Oliver
I designed the UI and user experience for +Saúde, a wellness app focused on healthy habits, daily progress, and personal care. The project includes: ✨ Gamified daily goals ✨ XP, levels, and rewards system ✨ Clean and intuitive dashboard ✨ Appointments, digital ID card, and medication tracking ✨ Modern and minimal UI built for everyday usability Each screen was crafted with clarity, motivation, and user-friendly interaction in mind, delivering a functional and engaging experience. If you need app design, professional UI/UX, or a complete modern interface for your project, I’m open to new collaborations.
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Rodrigo Faria
Microtutorials
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7
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Caio Sanches
Automating SAP Login and Data Update with Selenium and Python
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4
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Eduardo Takemura
Handwritten Digits Classifier
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5
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Daniel Paschoalino
Automation Collection NBA Players
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Elvis Cavalcante
AI-Powered Customer Support Workflow Optimization
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4
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Sharles Maurício Mariano
ADNI CNN Dense Classifier
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Andre Muniz
Most OCR systems stop at text extraction. The real value starts after the document is read. In this project, I built an AI-powered OCR pipeline capable of extracting text from invoices, contracts, reports, and forms while also classifying the document type and identifying key information automatically. Instead of returning raw text only, the system structures the data into usable outputs for automation workflows, CRMs, ERPs, and AI agents. This reduces manual processing time and makes documents immediately actionable inside business operations. The stack combines OCR engines with LLM-based processing for contextual understanding, keyword extraction, and intelligent classification. The result is a more reliable document processing flow that can integrate directly with APIs, databases, and automation systems. This is where AI engineering becomes practical: transforming unstructured files into structured business data at scale
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Guilherme Farinassi
API Security Assessment - REST and GraphQL Endpoints Performed a black-box API security assessment covering REST and GraphQL endpoints for a fintech platform. Identified BOLA/IDOR vulnerabilities allowing unauthorized access to other users financial data, mass assignment flaws exposing admin-only fields, broken function-level authorization on privileged endpoints, and GraphQL introspection exposing internal schema. Also found SSRF via webhook URL parameter and JWT algorithm confusion (RS256 to HS256). Delivered OWASP API Top 10 aligned report with curl-based PoC for each finding and remediation guidance.
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Rodrigo Faria
SMB/Entrepreneur Robots
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12
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Caio Sanches
Fraud detection
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4
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