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Sean C.
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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).

🇨🇦Richmond Hill, Canada$75/hr100% JSS4.77 (3)Since Sep 2010

Earnings and projects

MRR
$5k

Last 6 months ÷ 6

World#5,372 / 412k
🇨🇦Country#169 / 7,133
Revenue, last 30 days
$4.9k

Last 6 months: $30k

World#5,851 / 412k
🇨🇦Country#179 / 7,133
Total earnings
$363k

Billed in all: $385k

World#5,377 / 412k
🇨🇦Country#160 / 7,133
Per project
$73k

$30k in the last 6 months

World#413 / 412k
🇨🇦Country#14 / 7,133
Projects, last 6 months
1
0% fixed100% hourly
World#128,092 / 412k
🇨🇦Country#1,897 / 7,133
Projects in all
5

Across 7 contracts

29% fixed71% hourly
World#266,042 / 412k
🇨🇦Country#4,681 / 7,133

Earnings, last 30 days

$385k+$4.9k earned in the last 30 daysBilled in all, before Upwork's fee · drag across the chart to see what was earned in any stretch
$377.5k$380.0k$382.5k$385.0kOct 8Oct 23Nov 7

Skill rankings: Top 0.97% in Chat & Messaging Software

Ranked by MRR among everyone on Upwork with the skill.

  1. 2watchOS97 freelancers · 🇨🇦 #1Top 2%
  2. 3Apple Watch66 freelancers · 🇨🇦 #2Top 5%
  3. #6Location-Based Service138 freelancers · 🇨🇦 #1Top 4%
  4. #9Chat & Messaging Software924 freelancers · 🇨🇦 #1Top 0.97%
  5. #11User Authentication698 freelancers · 🇨🇦 #1Top 2%
  6. #12UIKit818 freelancers · 🇨🇦 #1Top 1%
  7. #18JSON1,293 freelancers · 🇨🇦 #1Top 1%
  8. #19iPad App Development446 freelancers · 🇨🇦 #2Top 4%