Open to opportunities

Cesar Giupponi

@cesargiupponi

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Senior iOS engineer building reliable, testable mobile experiences in Swift.

Brazil

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What I'm looking for

I seek a mobile engineering role where I can build high-quality iOS products, mentor teammates, improve test coverage and CI/CD, and work collaboratively in an agile, product-focused team.

I am a Senior iOS Engineer with 10+ years of experience building production-grade mobile applications across fintech and software industries, specializing in Swift, UIKit and SwiftUI. I focus on end-to-end feature development, automated testing, code quality, and cross-functional collaboration with Product, Design, and Backend teams.

My work has reduced defect rates, sped development, and improved user satisfaction—examples include shipping six reusable iOS frameworks, rebuilding a managerial app to production in 11 months, and mentoring engineers to raise team iOS best-practice knowledge by 20%.

Experience

Work history, roles, and key accomplishments

Current

Senior iOS Engineer

Current

Itaú

Apr 2021 - Present (4 years 5 months)

Led development of end-to-end iOS features, delivered 6 reusable iOS frameworks and an executive app in 11 months, reducing defect rate by 25% and improving user satisfaction by 15%. Drove observability and bug fixes that cut a chat access error rate from 28% to 1% for 1M+ customers.

Swift SwiftUI UIKit XCTest CI CD MVVM Unit Testing Fastlane Git

iOS Engineer

Itaú

May 2020 - Mar 2021 (10 months)

Implemented interactive branch map and chat/FAQ features, increasing user adoption 15–30% and reducing call center volume by 20%; raised test coverage by 80% and cut defect rate through automated UI and unit tests.

Swift UIKit Socket.IO FBSnapshotTestCase Automated Testing TDD

iOS Engineer

NTT DATA

Mar 2019 - May 2020 (1 year 2 months)

Migrated two legacy Objective-C frameworks to Swift (100% migration), achieving 75%+ unit test coverage and a 5% increase in Swift codebase; integrated voice capabilities to boost mobile recharge and transfers by 20%.

Swift Objective C XCTest Swiftlint Speech Framework Unit Testing Code Migration CI CD

Junior Mobile Developer

Totvs

Aug 2017 - Mar 2019 (1 year 7 months)

Developed and submitted a cross-platform mobile app to App Store and Play Store and built five production features (medical history, reimbursement, provider search, virtual cards, bank slips) using Ionic and Angular.

Ionic TypeScript Angular Android iOS REST APIs