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Fábio Resende

@fbioresende

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I build scalable iOS applications, modernize legacy codebases, and improve mobile platform reliability.

Brazil

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What I'm looking for

I'm looking to build and modernize scalable iOS products, improving architecture, performance, reliability, testing, and engineering quality.

I've built and modernized iOS products at Wynk, AllTrails, Getnet, Cast IT Group, and the Apple Developer Academy. My work spans scalable mobile applications, payments platforms, map experiences, loyalty programs, and offline-first systems.

At AllTrails, I helped migrate the primary map experience from UIKit to SwiftUI for a product used by tens of millions of users worldwide. I also developed real-time weather filters, migrated Objective-C code to Swift, and implemented CoreData persistence for reliable offline access to map and park data.

At Wynk, I helped scale the platform to approximately 400k users in Brasília while owning iOS architecture and serving as the sole iOS developer for roughly two to three years. I've built payment and loyalty features, CI/CD pipelines, automated testing strategies, documentation, and onboarding practices that supported team growth.

I'm focused on Swift, SwiftUI, MVVM, modern Apple frameworks, code quality, performance, and maintainable architecture. I bring more than 10 years of experience improving mobile products from early-stage applications to large-scale platforms.

Experience

Work history, roles, and key accomplishments

Current

Senior iOS Engineer

Current

Wynk

Aug 2025 - Present (1 year)

Returned to lead modernization of the iOS application, refactoring legacy components and introducing modern Swift and SwiftUI patterns. Designed and implemented features for digital payments, loyalty programs, and customer engagement.

Swift SwiftUI Combine MVVM UIKit SPM XCTest Git Scrum Kotlin

Senior iOS Engineer

AllTrails

Jan 2024 - Aug 2025 (1 year 7 months)

Played a key role in migrating the app's primary map experience from UIKit to SwiftUI, modernizing a codebase used by tens of millions of users. Implemented offline-first data persistence using CoreData and applied Swift Concurrency and Combine.

Swift SwiftUI Combine MVVM Objective C Amplitude UIKit Cocoapods SPM XCTest Git Scrum

Senior iOS Engineer

Getnet

Nov 2022 - Dec 2023 (1 year 1 month)

Contributed to a payment terminal management platform within a large-scale fintech infrastructure. Participated in unifying two internal applications and increased unit test coverage to approximately 92%.

Swift Firebase UIKit RxSwift Alamofire Cocoapods XCTest Bitbucket Scrum

iOS Engineer

Cast IT Group

Nov 2016 - May 2017 (6 months)

Contributed to development and maintenance of the Banco do Brasil Ourocard mobile application. Implemented bug fixes and maintenance tasks within a large Objective-C codebase.

Objective C MVVM Scrum GitHub

iOS Engineer

Apple Developer Academy

Jan 2015 - Dec 2015 (11 months)

Selected to participate in the Apple Developer Academy, an intensive program focused on software engineering, product development, and design. Designed and developed iOS applications from concept to delivery.