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cmarciao/README.md

Typing SVG


Cássio Marcião github stats Top Languages

Main skills:

React.js  Next.js  Node.JS  PostgreSQL  Firebase  Nest.JS  AWS  Docker

🚀 About Me

I am a Fullstack Software Engineer with 4 years of experience building web and mobile applications. I enjoy working across the entire stack because it gives me a clear view of how a feature moves from the user interface to the database and cloud infrastructure. My goal is always to write clean, reliable code that solves real problems for users and businesses.

🌟 Key Technical Contributions

  • System Optimization: During my time at Sidia, I identified and addressed a critical database bottleneck by implementing a dedicated system storage solution for file management. This proactive shift prevented database bloat and ensured the application remained performant as data volume scaled.
  • Cross-Platform Development: Contributed to a large-scale automation ecosystem for mass cell phone testing. I worked developing frontend management interfaces and mobile components (Kotlin/Android) to facilitate concurrent testing cycles across multiple devices.
  • Operational Dashboards & Integrations: I developed a performance dashboard that allows teams to track critical metrics like response times and conversion rates. I also have experience building native integrations with Meta’s Conversion API (CAPI) and Google Sheets to automate manual workflows and improve data accuracy.

💻 Developer Profile

I thrive in roles where I can be a versatile developer who dives into the technical details. I have practical experience implementing real-time features with Websockets and MQTT, managing data flows with Apache Kafka, and ensuring reliability through Jest and Cypress testing. My technical curiosity has also led me to build and deploy full-stack applications using AWS (S3, Lambda, API Gateway, Cognito) and React Native, giving me a solid understanding of how to manage and deploy cloud-native environments from end to end.

🛠 Technical Toolkit

  • Frontend: ReactJS, NextJS, TypeScript, React Native, Tailwind CSS, MUI.
  • Backend: Node.js (Express), C# (ASP.NET), Kotlin, Python, Cloud Functions.
  • Real-time & Data: Websocket, MQTT, Apache Kafka, PostgreSQL, MongoDB, Firebase.
  • Infrastructure & Testing: AWS (S3, Lambda, API Gateway, Cognito), Jest, Cypress.

Pinned Loading

  1. waiter-app-web waiter-app-web Public

    The Waiter App streamlines restaurant ordering with a mobile app for waiters to manage orders, a web control panel for kitchen management, and an API for seamless data integration.

    TypeScript

  2. e_commerce-frontend e_commerce-frontend Public

    📃 E-commerce - É uma mini plataforma online de compras, onde você pode escolher seus produtos e "compra-los". Este projeto se trata de um frontend e precisa de sua API Rest.

    TypeScript 1

  3. waiter-app-mobile waiter-app-mobile Public

    The Waiter App streamlines restaurant ordering with a mobile app for waiters to manage orders, a web control panel for kitchen management, and an API for seamless data integration.

    TypeScript 1

  4. design-patterns design-patterns Public

    TypeScript

  5. waiter-app-api waiter-app-api Public

    The Waiter App streamlines restaurant ordering with a mobile app for waiters to manage orders, a web control panel for kitchen management, and an API for seamless data integration.

    TypeScript

  6. e_commerce-backend e_commerce-backend Public

    📃 E-commerce - É uma mini plataforma online de compras, onde você pode escolher seus produtos e "compra-los". Este projeto se trata de uma API Rest.

    TypeScript