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leosimoes/README.md

Leonardo Simões

Full Stack Software Engineer

LinkedIn

6+ years of experience building web applications with TypeScript/React and Python/FastAPI.

I work with AI agents as part of my daily workflow — especially Claude Code, for agentic coding, prototyping, and code review.

Previously worked with Java/Spring and data analysis projects.

Skills

  • Front-end: TypeScript, React, TailwindCSS, JavaScript, HTML, CSS
  • Back-end: Python, FastAPI, Node.js, REST, GraphQL, Java, Spring Boot
  • Data & Infrastructure: PostgreSQL, MongoDB, SQL, Pandas, Streamlit, Docker, AWS, CI/CD, Git
  • AI & Productivity: AI Agents, Claude Code, Claude Design, GitHub Copilot, Prompt Engineering

Certifications

  • GitHub Copilot (GH-300) — 03/2026
  • GitHub Foundations (GH-900) — 09/2025
  • Microsoft Certified: Azure AI Fundamentals (AI-900) — 05/2025
  • Microsoft Certified: Azure Data Fundamentals (DP-900) — 05/2025
  • Microsoft Certified: Azure Fundamentals (AZ-900) — 02/2025
  • AWS Certified Cloud Practitioner (CLF-C02) - 12/23

Education

  • UERJ — Bachelor's Degree in Computer Engineering
  • Udacity — Data Analyst Nanodegree · AWS Machine Learning Engineer Nanodegree

Experience

  • Freelancer — Full Stack Developer (2020 – present)
  • Quantum Finance — Back-end Development Intern

Pinned Loading

  1. Java-Spring-GraphQL-Articles Java-Spring-GraphQL-Articles Public

    Java project with Spring and Gradle to create a GraphQL application from articles.

    Java

  2. Java-Spring-JJWT Java-Spring-JJWT Public

    Java project with Spring and Gradle for authentication using Java JSON Web Token (JJWT).

    Java

  3. UERJ-TCC-Analisador-Dados UERJ-TCC-Analisador-Dados Public

    Trabalho de conclusão de curso (TCC) em Engenharia de Computação. Aplicativo Web para preparação e análise de dados, criação de gráficos e modelos de regressão linear e logistica.

    Python 1

  4. DataScienceAcademy-PowerBI-3.0 DataScienceAcademy-PowerBI-3.0 Public

    Projetos do curso Microsoft Power BI Para Data Science Versão 3.0 da DataScienceAcademy. Dashboards para diversos casos de negócios.

    Text 1

  5. DataHackers-State-of-Data-Brazil-2021 DataHackers-State-of-Data-Brazil-2021 Public

    Análise dos dados do State of Data Brazil 2021. Informações da área profissional de dados no Brasil em 2021.

    Jupyter Notebook 1

  6. Udacity-Wrangle-and-Analyse-Data-Tweets Udacity-Wrangle-and-Analyse-Data-Tweets Public

    Project 4 of the Udacity Data Analyst Nanodegree Program. Data Wrangling of tweets from three different sources, with different file extensions.

    Jupyter Notebook 1