Dan K.
Senior Mobile App Developer | iOS & Swift | Build, Rescue & Launch
I’m a senior mobile app developer with deep native iOS expertise in Swift, SwiftUI, and UIKit. I build, rescue, and launch production mobile apps, including backend/API integrations, Firebase, payments, AI integrations, and App Store delivery. You’ll work directly with me. I own the architecture, implementation, technical decisions, client communication, and release work. Recent work includes: • Rescuing and launching an inherited iOS marketplace by fixing crashes, repairing backend order flows, and rebuilding Stripe and Apple Pay checkout. • Building a native iOS + Android mountain-safety system with Firebase, background location, and automated late-back alerts. • Building a SwiftUI AI app with text and image workflows, saved history, StoreKit 2 credit purchases, and API integration. Send me your current app state, main blocker, or next feature. I can start with a focused paid review, fix, or feature and continue through launch and maintenance.
Earnings and projects
Last 6 months ÷ 6
Last 6 months: $8.3k
Billed in all: $18,975$19k
$831 in the last 6 months
Across 11 contracts
Across 21 contracts
Earnings, last 30 days
Skill rankings: Top 5% in App Store Upload
Ranked by MRR among everyone on Upwork with the skill.
- #4StoreKit43 freelancers · 🇨🇦 #1Top 9%🇨🇦#1 of 2
- #9TestFlight63 freelancers · 🇨🇦 #1Top 14%🇨🇦#1 of 2
- #10App Store Upload193 freelancers · 🇨🇦 #1Top 5%🇨🇦#1 of 5
- #37iOS SDK351 freelancers · 🇨🇦 #3Top 11%🇨🇦#3 of 11
- #40Mobile App Improvement281 freelancers · 🇨🇦 #1Top 14%🇨🇦#1 of 4
- #56UIKit818 freelancers · 🇨🇦 #3Top 7%🇨🇦#3 of 20
- #57Mobile App Bug Fix453 freelancers · 🇨🇦 #1Top 13%🇨🇦#1 of 7
- #87Objective-C1,282 freelancers · 🇨🇦 #4Top 7%🇨🇦#4 of 39