Profile photo of Marcos Antonio

Hello, I am Marcos

A Full-Stack Developer

Building complete solutions, combining the development of modern, functional interfaces with the implementation of robust back-end architectures

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Campina Grande, Paraiba, Brazil

About Me

I started my journey in development in 2019 when I joined the technical course in Informatics at IFPB – Santa Luzia (PB). That’s where I had my first contact with web development, working with HTML5, CSS3, and JavaScript. Since then, I’ve been continuously building my skills, with a strong focus on modern frameworks, especially React.js, which has been my main development tool ever since.

Over the years, I’ve deepened my knowledge of the React ecosystem, working with technologies like TypeScript, Styled Components, Axios, and Next.js, as well as databases like PostgreSQL. I also gained experience testing APIs with Postman and exploring Oracle APEX, which helped me broaden my understanding of web development and system integration.

I'm passionate about learning, delivering clean and efficient code, and creating great user experiences. I believe my hands-on experience, adaptability, and results-driven mindset can bring value to any team — especially when it comes to building responsive interfaces and integrating systems seamlessly.

I'm excited to take on new challenges, collaborate with passionate teams, and keep growing both personally and professionally.


My Experience

Aug 2025 - Present

Full-Stack Developer

Creatorsfy Enterprise

I joined the company focused on back-end and, over time, expanded my work to the front-end. On the back-end, I build and maintain services with NestJS, Drizzle ORM and PostgreSQL, create data processing (ETL) pipelines and work with event-driven communication using Kafka. On the front-end, I build responsive interfaces and reusable components with Next.js, Tailwind CSS and TanStack Query.

May 2026 - Aug 2026

Front-End Developer

Applied Intelligent Computing Laboratory (LACINA), Campina Grande, Paraíba, Brazil

I worked as a front-end developer on a multi-tenant web ERP, first as a volunteer (20 hours a week) and later as a scholarship fellow. I built the interface with React, TypeScript and Tailwind CSS, used TanStack Query to consume the APIs and React Hook Form with Zod for forms and validation.

Nov 2022 - Jul 2023

Front-End Developer and Scrum Master

CODEX Junior Enterprise (Campina Grande, Paraíba, Brazil)

I developed web applications with React.js, TypeScript, Axios, HTML5, and CSS3, building reusable components and implementing state management solutions. As Scrum Master, I led agile ceremonies and helped improve team workflows, while also participating in code reviews and technical planning.

Aug 2021 - Oct 2021

Front-End Developer

Municipal Government of Junco do Seridó (Paraíba, Brazil)

I developed a responsive institutional website using HTML5, CSS3, and JavaScript. I worked on designing and structuring web pages to ensure a clean, user-friendly experience across different devices. In addition, I collaborated with the internal team to gather requirements and transform them into functional solutions.


Featured Project

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TypeScriptPython

VerificaJus Sigilo

A full-stack dApp built with UFCG and the Paraíba State Court (TJPB) to validate confidential juvenile court documents. Institutions sign in with an Ethereum wallet and get access through on-chain profiles, while anyone can check a document's status on a public QR code page. Built with FastAPI, Solidity and Web3.py on the back end and a TypeScript front end.

React.JsNextJsTypeScriptDrizzle ORMPostgreSQLDockerZod

Let Me Ask

A full-stack web app developed during NLW Agents by Rocketseat at 2025 for live streams and broadcasts, which uses an AI agent to predict answers to questions in real time.

NextJsNestJsDrizzle ORMPostgreSQLDockerTanStack QueryShadcn UIZod

Management Platform for Networking Groups

A web platform for managing networking groups, with tools to organize members, membership requests, and invitations. Built with a NestJS (Node.js) API and a Next.js (React) web app.

See other projects on my GitHub

Contact Me

Have an opportunity or a project in mind? feel free to get in touch.

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