Available for iOS opportunities

Mario
Duarte.

iOS Developer · Mechatronics Engineer · Santa Catarina, BR

Crafting clean, performant, and user-centric native iOS experiences with Swift & SwiftUI. Published on the App Store in 175 countries.

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595
Recipes in App
175
Countries Reached
6+
iOS Projects
C1
English Level
Portfolio

Featured Projects

A collection of native iOS apps exploring the full breadth of Apple’s frameworks.

Simpsons Encyclopedia

Deep-dive into the Simpsons universe with offline support, async data fetching, and character insights stored locally via SwiftData.

SwiftUISwiftData
View on GitHub →
JP Apex Predators

Interactive dinosaur encyclopedia with MapKit for geographic habitat visualization and advanced type-based filtering.

MapKitSwiftUI
View on GitHub →
Pokédex

Technical showcase of iOS persistence evolution: dual SwiftData vs Core Data implementation, plus interactive Home Screen Widgets.

SwiftDataCore DataWidgetKit
View on GitHub →
Breaking Bad Quotes

Immersive quotes app with a spoiler management system, tab-based navigation, and high-fidelity character-accurate UI.

SwiftUIJSON Parsing
View on GitHub →
HP Trivia

Magical quiz experience with dynamic AVKit audio management and StoreKit in-app purchases, built entirely with Swift 6.

AVKitStoreKitSwift 6
View on GitHub →
My First App

The foundation of my iOS journey, mastering Swift fundamentals, UI layouts, and the Apple developer workflow.

SwiftUISwift
View on GitHub →
Tech Stack

Skills & Expertise

Core — Proficient
Swift / Swift 6 SwiftUI Xcode Git / GitHub
Frameworks — Intermediate
SwiftData Core Data MapKit WidgetKit AVKit StoreKit REST API MVVM
Growing
UIKit XCTest Combine async/await CI/CD
Languages
Portuguese — Native English — C1 Spanish — B2
WEG S.A.
06/2024 → 12/2024
Engineering Intern — BESS Division
  • Built a full CRM system from scratch in VBA for the Battery Energy Storage division of a global leader in electric motors.
  • Automated complete technical & commercial proposal generation from project specs.
  • Integrated live USD exchange rate, auto-fill dates and client data into proposals.
  • Reduced proposal creation time by 90% eliminating all manual processes.
IFSC — Instituto Federal de Santa Catarina
2018 → 2024
B.Eng. Mechatronics Engineering
  • Algorithms & Programming, OOP, Software Engineering, Data Structures, Embedded Systems, Control & Automation.
  • Bachelor’s thesis: high-precision low-cost digital thermometer — hardware + firmware, calibrated by CERTI, validated in industrial environment.
Background

The Engineering Mindset

Mechatronics gave me hardware, software, and systems thinking. iOS gives me the canvas to build things people actually use.

⚙️
Mechatronics Foundation

My engineering degree blended hardware, software, and control systems — giving me a unique perspective when architecting iOS apps. I think in systems, not just features.

📱
Native iOS Focus

I choose Swift and SwiftUI because native matters. Smooth animations, proper HIG compliance, and tight system integration are non-negotiable for great products.

🌍
Shipped to 175 Countries

Easy Meal App is live on the App Store worldwide. Building production software taught me what no course can: how real users interact with your product.

📐
Always Learning

Currently deepening expertise in Swift 6 concurrency, TDD, and the Combine reactive stack. I actively follow WWDC sessions and the full Apple developer ecosystem.

Get in Touch

Let’s build something great

I’m actively looking for my first iOS Developer role. If you’re building something meaningful and care about craft, I’d love to talk.

Email
mariods7@gmail.com
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LinkedIn
marioduartesilveira
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GitHub
github.com/keykenzo
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App Store
Easy Meal App
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