Senior iOS Engineer · São Paulo

Hello, I'm Bruno Mello

Crafting exceptional mobile experiences with 8+ years in Swift, SwiftUI, and Clean Architecture — building scalable, performant apps for PayPal, WHOOP and Venmo, now reaching into Spatial Computing.

PortfolioView.swift
import SwiftUI

struct PortfolioView: View {
  var body: some View {
    VStack(spacing: 16) {
      Text("Hello, World!")
        .font(.largeTitle)
      Spacer()
    }
    .animation(.spring())
  }
}
Scroll

01 — About

The human behind the craft

I'm a Senior iOS Engineer with over 8 years building apps that are fast, reliable and a pleasure to use. I started in Objective-C, quickly embraced Swift and SwiftUI, and I'm now diving into Spatial Programming on Vision Pro.

I've designed scalable architectures — MVVM, VIPER, TCA — and lean on Combine and RxSwift to keep apps testable, modular and decoupled.

Whether integrating APIs, squeezing out performance, or shaping clean, maintainable code, I enjoy every step of building products people genuinely love.

0+
Years crafting iOS
0+
Roles & shipped apps
0%
Swift native

02 — Experience

A flight path through iOS

Ten roles, one obsession: shipping apps that feel inevitable.

iOS Software Engineer

PayPal Mar 2024 — Present
  • Developed new features in Swift and UIKit
  • Maintained and improved legacy Objective-C code
  • Implemented RxSwift for reactive data flows
  • Wrote unit and automation tests for reliability and performance
  • Used Crashlytics & Firebase Remote for feature management

iOS Software Engineer

WHOOP Feb 2023 — Feb 2024
  • Built features with SwiftUI and Combine
  • Maintained older code in Objective-C
  • Integrated RESTful APIs for data synchronization
  • Used Google Analytics & Crashlytics to monitor usage and resolve bugs

iOS Software Engineer

Klever Apr 2021 — Jun 2023
  • Developed with SwiftUI 3.0, Combine and TCA
  • Implemented gRPC services via Protocol Buffers
  • Gained hands-on experience with blockchain technologies
  • Improved readability with VIPER and MVVM patterns

iOS Software Engineer

Venmo May 2022 — Feb 2023
  • Worked on modularization, Deep Links & Dynamic Links
  • Developed features with RxSwift and RxCocoa
  • Led CI/CD with Buildkite for efficient deployments
  • Held high accessibility standards for inclusive usage

iOS Software Engineer

SKY Brasil Aug 2020 — Aug 2021
  • Optimized existing algorithms for better performance
  • Designed components following the company Design System
  • Performed extensive testing for reliability and quality

iOS Software Engineer

ModalMais Home Broker Mar 2020 — Aug 2020
  • Implemented innovative features to enhance UX
  • Optimized workflows with Coordinators
  • Developed reactive functionality with RxSwift

iOS Software Engineer

PagSeguro PagBank Jul 2019 — Mar 2020
  • Developed new features while maintaining legacy code
  • Implemented accessibility support for inclusive UX
  • Optimized performance via Firebase Analytics error analysis

iOS Developer

Megaleios Mobile Jan 2019 — Jul 2019
  • Built features in Objective-C and Swift, improving stability
  • Integrated Firebase & Cloud Firestore for real-time updates
  • Implemented geolocation with Google Maps, Mapbox and MapKit

iOS Developer

Mobile Saúde Jan 2018 — Jan 2019
  • Maintained Objective-C legacy and added Swift features
  • Used TestFlight for testing and debugging
  • Connected the app to Firebase for real-time updates

iOS Jr Developer / Trainee

Pag! Jan 2017 — Jan 2018
  • Developed features in Swift and improved performance
  • Integrated RESTful APIs and Firebase for sync
  • Conducted testing and debugging via TestFlight

03 — Skills

An engineer's toolkit

Languages, frameworks and patterns I reach for.

Languages

Swift Objective-C Java C/C++

iOS Frameworks

SwiftUI UIKit Combine RxSwift

Architecture

MVVM VIPER TCA Clean Arch

Data & Backend

REST APIs gRPC Firebase CoreData

Tooling

GitHub Xcode Cloud Fastlane Vision Pro SDK

Testing & Analytics

Unit Testing Crashlytics Analytics UI Testing

04 — Selected Work

Apps in millions of pockets

WHOOP
SwiftUI Combine HealthKit

WHOOP

Built iOS features for the premium fitness & recovery platform athletes rely on to track performance.

Klever
Swift Core Data Clean Arch

Klever

Built components for the crypto wallet platform — securely managing, trading and staking digital assets.

Glance
SwiftUI Combine TCA

Glance

Developed features for the customer-experience platform, surfacing insights that improve every interaction.

05 — Education

Always calibrating

Computer Science, Bachelor

Centro Universitário FMU · FIAM-FAAM

2024 — Completed

Java Development

Caelum

2017

Oracle Database 12c

Instituto Infnet

2017

Scrum Master

Scrum.org

2017

06 — Based in

São Paulo, Brazil

São Paulo

The largest city in Brazil and Latin America's leading tech hub — home to countless startups, scale-ups and innovation centers.

Tech Hub
Innovation
Global City
Maps — São Paulo, BR

07 — Contact

Let's build something

Have a project, a role, or a spatial idea? My inbox is open.