Doug S.
Senior iOS Engineer | Swift, SwiftUI, UIKit, Architecture
Senior iOS Engineer with 10+ years of experience building high-quality apps, fixing critical performance issues, and shipping features end-to-end. I specialize in jumping into existing codebases, diagnosing what’s wrong fast, and delivering clean, maintainable solutions without slowing your team down. I’ve led development on large-scale consumer apps, including high-traffic retail and e-commerce systems, and I’m extremely comfortable with modern Swift, SwiftUI, UIKit, concurrency, Combine, and architectural patterns (MVVM-C, modularization, dependency injection, etc.). What I’m great at: 🔹 Building new features from scratch 🔹 Fixing crashes, optimizing performance, and improving stability 🔹 Cleaning up messy or legacy UIKit code 🔹 Refactoring for modularity and long-term maintainability 🔹 Rapid MVP builds for startups 🔹 Quick bug fixes, triage, and App Store compliance issues I work fast, communicate clearly, and deliver work that holds up long after the project ends. If you need a senior engineer who can ship, not just talk about architecture — I can help. Hourly Rate: $95–$120 (depending on scope and urgency)
Earnings and projects
Last 6 months ÷ 6
Last 6 months: $3.4k
$3.4k in the last 6 months
Earnings, last 30 days
Skill rankings: Top 11% in UIKit
Ranked by MRR among everyone on Upwork with the skill.
- #22Code Refactoring118 freelancers · 🇺🇸 #4Top 19%🇺🇸#4 of 13
- #94UIKit818 freelancers · 🇺🇸 #7Top 11%🇺🇸#7 of 44
- #108RESTful Architecture795 freelancers · 🇺🇸 #12Top 14%🇺🇸#12 of 61
- #303Software Architecture & Design1,465 freelancers · 🇺🇸 #46Top 21%🇺🇸#46 of 207
- #510GraphQL3,404 freelancers · 🇺🇸 #34Top 15%🇺🇸#34 of 197
- #582Swift3,634 freelancers · 🇺🇸 #71Top 16%🇺🇸#71 of 343
- #639Mobile App3,535 freelancers · 🇺🇸 #78Top 18%🇺🇸#78 of 281
- #675iOS3,908 freelancers · 🇺🇸 #70Top 17%🇺🇸#70 of 296