Engineering · Product · Leadership

Frontend Architecture for products that cannot afford to fail.

I turn complex problems into scalable, accessible digital products designed to evolve.

Portrait of Vagner Leitte

About

Hi, I’m Vagner.

For over 10 years, I have turned engineering challenges into digital products built to evolve. My experience spans enterprise and financial systems, frontend architecture with React and Angular, micro frontends, and accessibility.

I lead technical decisions, help teams deliver with clarity, and build independent products. I also explore how AI can amplify — not replace — the judgment of people who create software.

How I build

Engineering Principles

  1. Build for maintainability.

    Readable code and explicit decisions keep products healthy over time.

  2. Architecture should accelerate teams.

    Clear boundaries reduce dependencies and increase delivery autonomy.

  3. Accessibility is part of quality.

    Inclusive experiences are a product responsibility from day one.

  4. Measure before optimizing.

    Evidence guides priorities and prevents complexity without returns.

  5. AI should amplify engineers.

    Intelligent tools should elevate human capability and critical thinking.

Where I create impact

Expertise

Architecting solutions that balance immediate business needs with long-term technical sustainability.

Frontend Architecture

Resilient technical boundaries that scale with applications, products, and teams.

Micro Frontends

Independent delivery strategies that reduce coupling and speed up teams.

React & Angular

Responsive, sustainable products with choices guided by context.

Technical Leadership

Clear direction, mentorship, and decisions that move teams forward.

AI-assisted Engineering

AI applied to engineering workflows to expand quality and velocity.

Accessibility

Inclusive systems from architecture to the smallest interface detail.

Independent work

Products & Initiatives

Independent products combining architecture, experience, and purpose.

Petal app displayed on an iPhone
Available on the App Store

Petal

Last updated
Aug 2026

A habit-tracking platform designed to provide a lightweight, private, and offline experience, with no ads or reliance on cloud services, putting users in control of their own data.

  • React Native
  • Expo
  • Offline-first
  • Local-first
EquiProvas platform dashboard displayed on a monitor and laptop during an equestrian competition
In development

EquiProvas

Last updated
Aug 2026

EquiProvas centralizes equestrian competition management, bringing registrations, events, horses, competitors, and results into one modern platform. Its first discipline at launch will be barrel racing.

  • Equestrian management
  • Barrel racing
  • Web platform

The next challenge

Turning ideas into products that make sense.

If you’re building a product, leading a team, or solving a technical challenge, let’s talk.