
Adam Pietrafesa
Verified Expert in Engineering
iOS Developer
Denver, CO, United States
Toptal member since May 1, 2025
Adam is a native iOS Developer with 11+ years of experience. He has worked on various unique and challenging iPhone, iPad, watchOS, and tvOS apps. Adam's expertise spans everything needed to deliver a clean, modern app, including development, design, testing, and App Store distribution.
Portfolio
Experience
- iOS - 11 years
- Objective-C - 11 years
- UIKit - 11 years
- Mobile Development - 11 years
- Xcode - 11 years
- Swift - 6 years
- Android SDK - 5 years
- Android Studio - 4 years
Availability
Preferred Environment
Xcode, Objective-C, Swift, UIKit, iOS, StoreKit, Video Streaming, Apple TV, WatchOS, SwiftUI
The most amazing...
...app I've delivered features a video player that synchronizes with multiple audio players and lets the user control the volume of each player.
Work Experience
Mobile Application Developer
TrueFire
- Built a feature in iOS and Android apps that synchronized a video player with multiple audio players.
- Developed a native audio and video streaming app for iOS and Android.
- Created tools to download and play or view large groups of files, including MP3, MP4, and PDF.
Experience
iOS App for TrueFire
https://apps.apple.com/us/app/truefire-guitar-lessons/id690143001I created this project from scratch for TrueFire and was responsible for every aspect of its development, API integration, and App Store deployment. I also designed the UI for a lot of the newer features of the app. It utilizes many native libraries in order to stream audio and video files, download .mp3, .mp4, and .PDF files, send and receive messages, display push notifications, give users with vision impairments an easier mode to interact with the app, and much more. The app also features a very advanced tool that synchronizes multiple audio players with a video player, giving each player customizable volumes.
BUDDY iOS App for LiveFreely Inc
https://apps.apple.com/us/app/buddy-by-livefreely-inc/id1488656247Android App for TrueFire
https://play.google.com/store/apps/details?id=com.truefire.android3MadAdd - A Minimal iOS Game
https://apps.apple.com/us/app/madadd/id1596218790DFS BFF - A Fantasy Football Tool for iOS
https://apps.apple.com/us/app/dfs-bff/id6444964040Tap-To-Do
https://apps.apple.com/us/developer/adam-pietrafesa/id1007011369Education
Bachelor's Degree in Digital Arts and Sciences and Computer Engineering
University of Florida - Gainesville, FL, USA
Skills
Libraries/APIs
CocoaPods, Google API, iOS API, REST APIs, HealthKit, Fitbit API
Tools
Xcode, Android Studio, AVPlayer, Apple Push Notifications, Git, TestFlight, AutoCAD, Android Jetpack, Apple HealthKit
Languages
Objective-C, Swift, Java, Kotlin, C++, JavaScript, XML
Frameworks
UIKit, StoreKit, Android SDK, iOS SDK, SwiftUI, GameKit, WatchKit, Core Location
Paradigms
UX Design, iOS UI Design, UI Design, Agile, Mobile Development
Platforms
iOS, Apple TV, Android, tvOS, Music Streaming, Mobile, Firebase, WatchOS
Other
Video Streaming, Data Structures, Mathematics, tvOS UI, Accessibility, iOS UX Design, API Integration, APIs, Consumer-facing Products, Online Payments, Minimum Viable Product (MVP), iPadOS, iPad, iPhone, App UI, Streaming, Downloads, HTTP Live Streaming (HLS), Native Mobile Apps, AVFoundation, Audio, Mobile App Development, WatchOS UI, Credit Card Processing, Software Architecture, 3D Modeling, Location Services
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