Luis Gustavo

Software Engineer building products across platforms.

With 7+ years of experience, I design and build production software across iOS, Android and cross-platform ecosystems, combining product thinking, architecture and engineering to solve complex problems.

Software Engineering

Mobile

Architecture

Product

Luis Gustavo at Apple Park during WWDC24

Selected Work

Engineering across products

Platform Engineering · Server-Driven UI

Beagle · Server-Driven UI Platform

01 · Context

At Zup Innovation, I worked directly on Beagle, an open-source Server-Driven UI framework designed to let product teams create and evolve native experiences driven by backend-defined structures. The framework was adopted inside large enterprise environments, including Itaú. My work spanned both evolving the framework itself and helping teams successfully adopt it in production applications.

02 · Engineering Question

How do you let products evolve dynamically from the server without sacrificing native behavior, architecture, testability and maintainability?

Helped build the Server-Driven UI platform other teams built their products on, not just used it.

Fintech · Platform Architecture

Shared Onboarding & Platform Architecture

01 · Context

BTG has multiple digital product experiences, including banking and investment applications. Important product journeys can exist across more than one application, duplicating the same business logic independently in each one creates maintenance cost, inconsistent behavior, duplicated implementation and a larger regression surface.

02 · Engineering Question

How do you build a critical financial journey once and safely reuse it across multiple applications and platforms?

Turned an onboarding flow duplicated across apps into a shared foundation, later extended to Flutter.

Streaming · Media Engineering

Shared Streaming Architecture & Playback Analytics

01 · Context

FreeCast maintains streaming experiences across iPhone, iPad and tvOS. The products share important streaming and business behavior but have different interaction and UI requirements, raising an architectural question: what should be shared across platforms, and what should remain platform-specific?

02 · Engineering Question

How do you share streaming behavior across iOS and tvOS while preserving platform-specific UI, and still understand exactly how playback behaves in production?

Shared business logic across iOS/tvOS, hardened AVPlayer flows, and built the analytics layer that observes how both actually behave.

Engineering Across Platforms

Engineering beyond the stack.

Building production software goes beyond frameworks. It involves architecture, delivery, performance and understanding the platform itself.

Native experiences across Apple's ecosystem, from mobile interfaces to streaming applications.

Core

Swift · SwiftUI · UIKit

Platform

iOS · tvOS

Architecture

Modular Architecture

Media

Video Playback

Performance

Xcode Instruments

Quality

XCTest · XCUITest

Production Engineering

From code to production.

The platform is only part of the system. Shipping reliable software takes delivery discipline, quality practices and continuous feedback.

CI/CD & Delivery

Moving code from a commit to something real users depend on.

Automated Builds

Release Management

Environment Management

Observability & Reliability

Understanding what happens after software reaches production.

Xcode Instruments

Diagnostics

Performance Monitoring

Analytics & Product Insights

Using production data to inform product decisions, not marketing ones.

Production Data

Product Decisions

Quality & Testing

Building confidence into the development lifecycle instead of treating testing as a final step.

XCTest

XCUITest

Appium

Automated Testing

Code Review

Swift

Kotlin

Flutter

React Native

React

Architecture

About

I'm a Software Engineer working across mobile and web platforms. Over 7+ years, I've built products using Swift, Android, Flutter, React Native and React, in environments ranging from financial platforms to streaming applications. I care about architecture, product thinking and the details that make software feel considered rather than just functional. In my spare time, I enjoy sharing what I learn through talks at tech events.

Elsewhere

Education

Faculdade UNIESSA

Information Systems · 2019 – 2025

Graduated

Languages

Portuguese

Fluent

English

Intermediate

WWDC24 · Apple Park, Cupertino

Experiencing Apple's developer ecosystem from the inside

In 2024, I had the opportunity to attend Apple's Worldwide Developers Conference in person. It was an experience that brought together many of the things that shaped my work as a software engineer: platforms, design, developer tools and the engineering behind the Apple ecosystem. Walking through Apple Park, trying the latest hardware and meeting engineers from across the industry reinforced how deliberate great platform engineering has to be.

Swift

SwiftUI

Apple Platforms

Developer Ecosystem

Apple Park visitor hallway overlooking the campus

Standing under the rainbow installation at Apple Park

Group photo with fellow attendees at WWDC24

Engineering Journey

From building my first production applications to designing software across multiple platforms, each step expanded how I think about products, architecture and engineering.

2019

Present

Application Development

2019 – 2020
2019 – 2020
Building the foundation
The beginning of my professional journey: production applications, real business requirements and working closely with development teams.

2020 – 2021
2020 – 2021 · Mobile
Mobile
Expanding into mobile
Zup
Growing into mobile engineering, no longer just learning technologies but shipping production mobile products.
Flutter
Kotlin
Android
2021 – 2023
2021 – 2023 · Fintech
Fintech
Large-scale products
BTG Pactual · Itaú
Moving into larger engineering environments, working on financial products where architecture, scalability and complex business rules matter.
SwiftUI
UIKit
Architecture
2023 – 2024
2023 – 2024 · Apple Ecosystem
Apple Ecosystem
Apple ecosystem depth
Going deeper into the Apple ecosystem, from SwiftUI to platform-level architecture decisions.
Swift
SwiftUI
UIKit
2024
2024 · Apple Ecosystem
Apple Ecosystem
WWDC 2024
Attended Apple's Worldwide Developers Conference in person, strengthening my connection with the Apple developer ecosystem and the technologies shaping modern Apple platforms.
2024 – 2025
2024 – 2025 · Streaming
Streaming
Multi-platform engineering
FreeCast
Moving across platforms while maintaining consistent engineering principles, from streaming experiences to shared product behavior.
iOS
tvOS
Android
Flutter
React Native
React
TypeScript

2025 – Present
2025 – Present
Software Engineering
Today, my work spans platforms rather than being defined by one framework. I focus on engineering decisions that make products scalable, maintainable and consistent across different environments.
Mobile
Architecture
Product
Performance