Open to opportunities

Lucas Bighi

@lucasbighi

Senior iOS Developer, 6+ yrs. Cut crashes 90%, raised app ratings to 4.5. Swift/SwiftUI expert — Itaú Unibanco, Mercado Bitcoin, Prodesp.

Brazil

Message

What I'm looking for

I’m looking for full-time remote opportunities in the US and international markets, where I can own iOS architecture, modularization, performance, and CI/CD—shipping scalable fintech-grade mobile experiences with strong reliability.

Senior iOS Developer with 6+ years of experience building scalable, high-availability mobile applications for fintech and government platforms used by millions of users. I specialize in iOS architecture (MVVM-C, Clean Architecture, VIPER), feature modularization, performance optimization, and CI/CD pipelines using Swift, SwiftUI, and UIKit.

At Itaú Unibanco — Latin America's largest bank — I refactored the onboarding module into a reusable product now adopted across all business units. At Prodesp, I helped raise the SOU SP super-app's rating from 1.9 to 4.5, and at UZZO Pay I cut crashes by ~90% while improving performance by ~20%. I've also architected a multi-currency digital wallet from scratch as the sole iOS developer at Biz Payment Solutions.

I'm currently at Mercado Bitcoin, working on core revenue-generating features. Open to full-time remote opportunities, especially roles with strong overlap with US business hours.

Experience

Work history, roles, and key accomplishments

Current

iOS Developer

Current

Mercado Bitcoin

Apr 2025 - Present (1 year 3 months)

Refactored the Asset Management feature using Swift, SwiftUI, and MVVM-C to improve modularization, CI/CD pipeline efficiency, and scalability. Fixed critical SwiftUI UI bugs through cross-functional collaboration with design and QA.

Swift SwiftUI MVVM CI CD IOS SDK Scalability

iOS Developer

Prodesp

Jun 2023 - Apr 2025 (1 year 10 months)

Developed civic features for the SOU SP super-app, including Proof of Life, Medical Absence, SPPREV Functional IDs, and Public Security integrations using Swift and SwiftUI. Improved app stability and store rating through unit testing, CI/CD pipeline improvements, mobile performance optimization, and UX fixes.

Swift SwiftUI MVVM Coordinator Pattern Unit Testing CI CD Mobile Optimizations UX Fixes Public Security Integrations SPP Rev Functional IDs

Software Engineer (iOS)

Itau Unibanco

Jul 2021 - Jun 2023 (1 year 11 months)

Refactored the onboarding module into a reusable standalone product using Swift, UIKit, Clean Architecture, and CocoaPods feature modularization, applying SOLID principles and Dependency Injection. Collaborated on WhatsApp Pay integration and resolved Apple Wallet issues using Swift, UIKit, Apple Pay, Clean Swift, and XCTest (unit and UI testing).

Swift UIKit Clean Architecture Cocoapods SOLID Dependency Injection WhatsApp Pay XCTest Unit Testing UI Testing

iOS Developer

Biz Payment Solutions

Apr 2020 - Jul 2021 (1 year 3 months)

Architected and built a B2B white-label multi-currency digital wallet (fiat and crypto) from scratch, defining iOS architecture, Swift versioning, and feature modularization strategy using Swift 5, RxSwift, and VIPER. Implemented offline-first persistence with CoreData and applied SOLID principles and Dependency Injection.

Swift RxSwift VIPER IOS Architectures Offline First Core Data SOLID Dependency Injection

iOS Developer

UZZO Pay

Jun 2019 - Apr 2020 (10 months)

Reduced crashes by ~90% and improved mobile performance by ~20% by fixing Crashlytics-reported issues and refactoring legacy Swift 5 code using VIPER architecture and iOS SDK best practices. Helped raise the app store rating from 2.0 to 4.5 through stability and performance improvements.

VIPER Crash Reduction IOS SDK