Otabek T.
Senior iOS & Mobile Engineer | React Native| Flutter |AI Apps
Hi, I’m Otabek – a Senior Mobile Engineer with 5+ years of experience building production-ready iOS, Android, and cross-platform applications for startups and growing businesses. ✔️ Future Engineers National Competition Winner 🏆 ✔️ 30+ Projects Delivered | Trusted by 20+ Global Clients ✔️ 100% Job Success Score 📈 ✔️ Top Rated Freelance - by Upwork Top 10% ☆ ✔️ 5+ years of Experience in Mobile App Development ✔️ 24/7 Availability I specialize in turning ideas into polished mobile products with clean architecture, smooth user experiences, and scalable code. Whether it’s building a new app from scratch, improving an existing codebase, integrating AI, or preparing an app for the App Store, I focus on delivering solutions that are reliable and built to last. What I build • Native iOS Apps (Swift, SwiftUI, UIKit) • React Native Applications • Flutter Applications • AI-Powered Mobile Apps • AI-Assisted App Development • FlutterFlow Projects • Lovable & Base44 Applications • MVP Development • Existing App Improvements • Legacy Code Modernization • ARKit & 3D Scanning Applications • Firebase & Backend Integrations Technical Expertise Swift • SwiftUI • UIKit • React Native • Flutter • FlutterFlow • Lovable • Base44 • Cursor • Windsurf • Claude Code • GitHub Copilot • Firebase • Supabase • PostgreSQL • REST APIs • Node.js • OpenAI • Claude API • Gemini API • Core ML • Vision • ARKit • StoreKit 2 • RevenueCat • Git • TestFlight Industries I’ve Worked With * AI & Productivity * Health & Wellness * Social & Community Apps * Marketplace Platforms * Business Management Systems * On-Demand Services * AR / 3D Scanning * Subscription-Based Apps Why clients work with me * Clean, scalable, production-ready code * Experience working with existing codebases * Pixel-perfect UI implementation from Figma * Fast issue investigation and debugging * Long-term product mindset, not just task completion * Rescue unfinished AI-generated apps * Productionize MVPs built with no-code & AI tools * Performance optimization * Clear communication and regular updates Many founders today start their products using AI tools like Lovable, FlutterFlow, Base44, Cursor, or Bolt.new. Those tools are great for getting started, but production apps require experienced engineering. I specialize in taking AI-generated or no-code projects to the finish line - improving architecture, fixing bugs, integrating APIs, adding missing features, optimizing performance, and preparing apps for successful App Store and Google Play releases. Let’s build something great.
Earnings and projects
Last 6 months ÷ 6
Last 6 months: $4.5k
Billed in all: $17,049$17k
$565 in the last 6 months
Across 16 contracts
Earnings, last 30 days
Skill rankings: Top 11% in Mobile Payment Functionality
Ranked by MRR among everyone on Upwork with the skill.
- #5Mobile Payment Functionality47 freelancers · 🇺🇿 #1Top 11%🇺🇿#1 of 1
- #34ARKit189 freelancers · 🇺🇿 #1Top 18%🇺🇿#1 of 1
- #44App Store302 freelancers · 🇺🇿 #2Top 15%🇺🇿#2 of 5
- #70macOS393 freelancers · 🇺🇿 #1Top 18%🇺🇿#1 of 1
- #166ChatGPT API Integration984 freelancers · 🇺🇿 #1Top 17%🇺🇿#1 of 2
- #169SwiftUI951 freelancers · 🇺🇿 #2Top 18%🇺🇿#2 of 8
- #527Swift3,634 freelancers · 🇺🇿 #4Top 15%🇺🇿#4 of 16
- #545Mobile App3,535 freelancers · 🇺🇿 #1Top 15%🇺🇿#1 of 9