Leonardo Araújo User

At Investidor10, an investment analysis and portfolio management platform, I build backend services, product features, and AI integrations end to end.

→ Designed and shipped the Investidor10 MCP server, connecting the platform to Claude so users can query their portfolios, analyze assets, and record trades in natural language
→ Automated the software development workflow with AI agents and LLMs,

WeCare Connect provides insights for decision-making based on survey findings and reporting. I am responsible for optimizing the platform’s performance. I optimized the application’s performance by redesigning the database schema by denormalizing critical tables in a HIPAA-compliant environment. I refactored key system components to support the new data model without disrupting existing functional

AdAction/AdGem, a leading platform for game and app monetization, required improvements in performance, cost reduction, and efficient support for internal teams.
My mission was to contribute to critical projects such as the AdGem Dashboard, API, and Service Hub, while optimizing the Offer API's efficiency.
Worked on internal tools built on top of Vue/Nuxt and Laravel Livewire that provide support

Brandboom, a global fashion wholesale marketplace, relied on a decade-old legacy system with significant performance and maintainability challenges.
My responsibility was to lead the backend migration from Yii to Laravel, modernizing the system and implementing new frontend functionalities.
Successfully transitioned the system to Laravel, enhancing backend architecture and maintainability. Develop

VOLL needed to modernize a Zend Framework application to improve maintainability and introduce new features integrated with external services.
My role was to lead the migration to Laravel, develop APIs for real-time driver tracking, and integrate with platforms like Uber, 99, and Cabify, while enhancing overall system performance.
Led the backend modernization to Laravel and implemented robust API

Founded a startup focused on product rentals, aiming to deliver an innovative solution for comparing rental offers across different companies.
My responsibility was to design and develop a complete product rental platform, from catalog systems to advanced risk analysis tools and API integrations.
Developed some single-page applications (SPA) using Vue.js/Nuxt.js and a REST API and GraphQL Lighthou

Principal Software Engineer

Project leader of e-commerce at Maquina de Vendas S.A.

Project leader of e-commerce

Worked as Software Engineer at Telemont Engenharia de Telecomunicações S/A.