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Gustavo Rodrigues Fabiano

Mid-level Full-stack Developer

Full-stack developer with more experience on the frontend and an interest in growing on both sides. I deliver requirements end to end — React, Next.js and TypeScript on the frontend; Node.js, NestJS and RabbitMQ on the backend; React Native on mobile — and maintain an in-house Design System. I use AI every day and set projects up for AI code generation, gaining speed without losing structure or quality. What I enjoy most is building things well.

experience
  1. Big4Tech — Mid-level Full-stack Developer

    Feb 2025 — present

    Londrina, Brazil

    Responsible for several frontend platforms — React, Next.js, TypeScript and an in-house Design System — now with full-stack autonomy to deliver requirements end to end: backend with Node.js, NestJS, TypeORM and RabbitMQ; mobile with React Native and Expo. Use AI every day and prepare the environment for AI code generation, keeping structure and quality while the team gains speed.

    • Built a customer onboarding product with KYC, facial biometrics (liveness), KBA and e-signature.
    • Set up and built an efficient monorepo environment for the frontend systems, with a centralized Design System.
    • Collaborated on building an automated billing pipeline product.
    • Collaborated on building screens for the mobile app and the web CRM.
    • Created an environment ready for AI engineering, with tools and flows for AI-assisted development.
  2. Cash2Pay — Junior Frontend Developer

    Dec 2024 — Feb 2025

    Londrina, Brazil

    Working more autonomously, responsible for the company’s frontend platform, in collaboration with the backend team.

    • Organized, in a structured and planned way, a more efficient environment for the frontend team to deliver with more quality and speed.
  3. MundoInvest — Mid-level Frontend Developer

    Jan 2024 — Dec 2024

    São Paulo, Brazil

    Built and delivered requirements with more freedom, still with guidance, on a platform for tracking investments, the stock market and financial education.

    • Built an online learning environment from scratch — the whole frontend, with support on the backend.
  4. EWZ Capital — Junior Frontend Developer

    Sep 2022 — Dec 2024

    São Paulo, Brazil

    First role in the tech industry, focused on frontend, with many people helping and teaching me along the way. Learned a developer’s routine and had my first contact with agile methodologies.

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