About

Portrait of Marcello Ronald

Hello!! I am Marcello Ronald!

// Who am I?

I am a developer passionate about building intuitive, accessible and high-performance applications. I study Software Engineering at the Federal University of Goiás and I am enthusiastic about technology and innovation.

// What I do

Software Engineering is the discipline of designing, building, and maintaining reliable, scalable systems — from data models and APIs to the interfaces real users touch. I specialize in full-stack web development: React/Next.js frontends, structured backends, and the architectural decisions that keep codebases maintainable over time.

AI in my workflow

I use AI tools as active collaborators — for research, code review, and rapid prototyping. I treat them as force-multipliers: they handle the mechanical work, I own the decisions and the architecture.

ClaudeGitHub Copilot
// My story
  1. EducationOngoing

    Software Engineering · Federal University of Goiás (UFG)

    Studying Software Engineering at UFG, with a strong focus on web development, HCI, software quality and scalable architectures.
  2. ExperiencePersonal & academic projects

    FullStack Development

    Building production-style web apps with React, Next.js and TypeScript: SEO-friendly content sites, internal tools, prototypes and accessibility-focused interfaces. See more on: My GitHub
  3. InternshipOct 2024 → Present · On-site, Goiânia

    Software Development Intern · Secretaria de Estado de Administração (SEAD) - GEDS

    Part of the Systems Development Management department, contributing to multiple government systems across Goiás. Key work includes:
    • Developed an internal Angular app for PDF comparison & data extraction, plus new features on an existing internal system.
    • Researched CI/CD practices and presented a technical overview with a practical pipeline demo.
    • Contributed to the front-end of a state-level application from requirements gathering through full MVP delivery.
    • Worked in an agile Scrum team; applied modularization and maintainability principles throughout.
    Stack: Angular · TypeScript · Git · Scrum
  4. Project focusWhat I optimize for

    Performance, accessibility & DX

    Fast first paint, low JS overhead, keyboard-friendly UIs, strong typing and clean component APIs. I treat performance and a11y as features, not afterthoughts.
  5. Current roleMay 2025 →

    Junior Full-Stack Software Engineer · CognX

    Joining CognX to develop and evolve digital systems end-to-end. Responsibilities include full-stack development (frontend & backend), database design, structured API integration, and contributing to technical decisions with a focus on quality and innovation — building simple, testable, and scalable code that advances the company's strategic goals.