Sean C.
Mobile App Architect (iOS, Flutter)
o 17+ years of experience building iOS apps – one of the original App Store developers (July 2008) o 22+ years successfully working with dozens of clients from my REMOTE office, as a telecommuter o 30+ Apps published in the Apple App Store and Enterprise o 25+ years of professional software development experience o 20+ years of experience with networking protocols & methodologies: REST, JSON, HTTP, TCP, UDP o 20+ years of experience with source control systems: Git, SVN, CVS, RCS, VSS, Perforce o Keen ability to distill complex concepts and systems into easily understandable terms o Outstanding analytical and problem-solving skills o Ability to work independently and as part of a team o Exceptional attention to detail, remarkably fast learner, excellent communication skills. o Personable, enthusiastic, conscientious. o Languages: Objective-C, C++, Swift, Java, Kotlin, JavaScript, PHP, Python, Perl, C, C#. o Operating Systems: iOS, watchOS, macOS, Windows, Linux, Unix. o IDEs: Xcode, Android Studio, Visual Studio, Eclipse. o Experience with API architecture design. o Strong understanding of multi-threaded and concurrent applications. o Expert understanding of all aspects of the iOS provisioning workflow. o Experience developing in an agile and test-driven environment. o Experience creating dynamic libraries with CocoaPods. o Experience with third-party libraries, APIs, and SDKs. o Hands-on experience with UIKit, CoreData, CoreGraphics, CoreAnimation, Cocoa design patterns. o Experience with a wide variety of analytics platforms, including Firebase (Google), Flurry (Yahoo), AWS, comScore, Nielsen, Adobe, MOAT (Oracle). o Ability to bring designer’s creations to life, with pixel-perfect implementations. o Experience in video and media-based development projects. o Working knowledge of Android development (Android Studio, Java, Kotlin, XML, Gradle, CircleCI).
Earnings and projects
Last 6 months ÷ 6
Last 6 months: $30k
Billed in all: $384,863$385k
$30k in the last 6 months
Across 7 contracts
Earnings, last 30 days
Skill rankings: Top 0.97% in Chat & Messaging Software
Ranked by MRR among everyone on Upwork with the skill.
- watchOS97 freelancers · 🇨🇦 #1Top 2%🇨🇦#1 of 2
- Apple Watch66 freelancers · 🇨🇦 #2Top 5%🇨🇦#2 of 2
- #6Location-Based Service138 freelancers · 🇨🇦 #1Top 4%🇨🇦#1 of 5
- #9Chat & Messaging Software924 freelancers · 🇨🇦 #1Top 0.97%🇨🇦#1 of 10
- #11User Authentication698 freelancers · 🇨🇦 #1Top 2%🇨🇦#1 of 11
- #12UIKit818 freelancers · 🇨🇦 #1Top 1%🇨🇦#1 of 20
- #18JSON1,293 freelancers · 🇨🇦 #1Top 1%🇨🇦#1 of 19
- #19iPad App Development446 freelancers · 🇨🇦 #2Top 4%🇨🇦#2 of 12