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Marcelo Carvalho

@marcelocarvalho

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I build scalable iOS and tvOS apps that improve ratings, revenue, reliability, and delivery speed.

Brazil

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What I'm looking for

I'm seeking impactful international remote opportunities where I can build scalable iOS and tvOS products, improve architecture and quality, and mentor engineers.

I've built mobile products for Petz, Grupo MAG, and Globoplay, reaching millions of users across Brazil and LATAM.

At Petz, I led a Swift Super App from scratch, unifying services into one e-commerce platform and raising its App Store rating from 4.0 to 4.9. I redesigned the codebase with Clean Architecture, TDD, and modularization, cutting full build time from six minutes to one minute and 30 seconds.

I increased Petz automated test coverage from 0% to 60% and helped raise crash-free sessions to 99.7% across roughly 600K monthly active users. I also built a company-wide design system and mentor engineers through 1:1s and pair programming.

At Grupo MAG, I delivered offline sales capabilities that increased revenue by more than 30%, while at Globoplay I helped ship its Apple TV app and offline downloads. I work across Swift, SwiftUI, UIKit, Combine, iOS, and tvOS, with a focus on modular, testable products.

Experience

Work history, roles, and key accomplishments

Current

Senior Software Engineer

Current

Petz

Aug 2022 - Present (4 years 1 month)

Led development of a Super App from scratch in Swift, unifying services into a single e-commerce platform and raising App Store rating from 4.0 to 4.9. Redesigned architecture using Clean Architecture, TDD, and modularization, cutting delivery time and build times.

Swift SwiftUI UIKit Combine Clean Architecture Test Driven Development Modularization Design Systems XCode Git SPM Cocoapods XCTest Snapshot Testing CI CD

Senior Software Engineer

Grupo MAG (Mongeral)

Jan 2020 - Jul 2022 (2 years 6 months)

Designed and built an offline sales mode using CoreData, increasing app revenue by more than 30%. Shipped the first iPhone version of the app and refactored legacy view controllers using Clean Architecture and TDD.

Swift Core Data Clean Architecture Test Driven Development Programmatic UI iOS

Senior Software Engineer

Globo.com — Globoplay

Jan 2017 - Jan 2020 (3 years)

Core iOS engineer on Globoplay, Brazil's leading streaming platform, partnering with Apple engineers to deliver its Apple TV app. Integrated Google Chromecast support and built offline download features, growing content consumption by more than 20%.