👋 Hi, I'm William (Will) Vasconcelos

Senior iOS Developer · Swift | Obj-C | Python 🧑‍💻

📍 Florianópolis, Santa Catarina, Brazil · 💼 Itaú Unibanco

About me 🧠

Senior iOS Developer with 10+ years of experience in the Apple ecosystem, building high-quality and user-friendly applications for banking, payments, consulting, retail, and innovation companies. Currently working at Itaú Unibanco on iOS Foundation and Payments teams, defining and promoting architectural standards and best practices. I leverage Azure DevOps Services, GitHub Actions, GitFlow, SwiftUI, Swift, Objective-C, and functional & reactive programming to support squads with technical guidance, planning, and mentoring. I am passionate about helping developers grow and creating impactful, innovative solutions that improve customer experience and satisfaction.

Experience 💼

Senior iOS Developer

Itaú Unibanco · Full-time · Remote

May 2023 – Present

• iOS development on Foundation and Payments teams, defining and promoting architectural standards and best practices across mobile apps. 📱 • Support squads with technical decisions, planning, and mentoring, leveraging Azure DevOps Services, GitHub Actions, GitFlow, SwiftUI, Swift, Objective-C, and reactive programming. 🤝

iOS Tech Lead / Senior iOS Developer

Banco Modal · Full-time · Remote

Oct 2019 – Dec 2022

• Led the iOS development team and defined architectural standards and best practices for all bank applications. 🧱 • Designed CI/CD standards with Azure DevOps, including automated testing and releases with fastlane. 🚀 • Supported squads with technical guidance, planning, and mentoring. 🤝 • Achieved 4.6 rating on the App Store with 33k+ reviews, 98.6% crash-free users (Firebase), and 70% test coverage on a 100% Swift 5 codebase. ⭐

Senior iOS Developer

PagSeguro UOL · Full-time · São Paulo, Brazil

Jul 2017 – Aug 2018

• iOS development and definition of architectural standards and best practices for the new PagSeguro app. 💳 • Helped select new developers and implement new features. 👥 • Led the refactor of the legacy Objective-C app to Swift using MVVM-C architecture. 🔁

Key Skills 🛠️

Swift 🧡 Objective-C 🐥 iOS Development 📱 SwiftUI 🎨 Reactive Programming (RxSwift) ⚡ MVVM-C 🧱 Azure DevOps ☁️ GitHub Actions 🤖 Git / GitFlow 🌱 Unit Testing ✅ Python 🐍

Education 🎓

FIAP — Artificial Intelligence (Aug 2025 – Aug 2027) iai? - Instituto de Artes Interativas — iOS Developer, Objective-C (2011)

Certifications 📜

Practitioner — Generative AI, Itaú Unibanco (Jul 2025) Practitioner — D&A Foundation, Itaú Unibanco (Mar 2024)

Currently learning & interests 🤖

• Artificial Intelligence and Machine Learning, currently studying AI at FIAP. • Generative AI applied to financial services and mobile apps. • Clean architecture, testing strategies and tooling to improve iOS developer experience.

Projects 📱

Itaú Emps — Conta PJ Digital — iOS project at Itaú Unibanco 🧡 (May 2023 – Present) PagSeguro Minha Conta — iOS project at PagSeguro UOL 💳 (Oct 2017) next — iOS project at Banco Next 💼 (Jul 2016)