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Igor S.
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Igor S.

iOS Developer | Swift, UIKit, SwiftUI | AI & Map-Based Apps

Give me an app idea, a broken product, a Figma design, or an existing codebase, and I’ll turn it into a clean, stable, App Store-ready iOS product. My focus is simple: build mobile apps that are not only technically solid, but also useful for real users and aligned with the business behind them. If you send me an invitation or message, I can review your idea, app, or requirements and explain how I may be able to help. A little more about me: I help founders, startups, and businesses build, improve, and scale iOS applications using Swift, SwiftUI, UIKit, APIs, AI integrations, Firebase, fintech flows, subscriptions, maps, and scalable mobile architecture. Whether you need to launch an MVP, rebuild an existing app, integrate AI features, improve UX/UI, fix bugs, connect a backend, add payments, or prepare your app for the App Store, I can help turn the technical chaos into a working product. Over the past 7 years, I’ve worked on educational startups, AI micro-projects, fintech apps, marketplace products, and client mobile applications. Selected work includes: • AI-powered faith app with Bible reading, religious learning chat, daily tasks, and marketplace-focused engagement • Online banking app with money transfers, currency exchange, in-app messaging, card issuing, UI direction, and UX improvements • Footnotes, a London city exploration app built around places, stories, local context, and map-based discovery What I can help with: • MVP iOS app development • Swift and SwiftUI development • UIKit development and legacy code improvement • AI app development and ChatGPT / OpenAI API integration • FinTech app development • Marketplace app development • SaaS mobile app development • API integration and backend connection • Firebase, Firestore, authentication, and real-time database logic • In-App Purchases, subscriptions, and monetization • MapKit, CoreLocation, location-based apps • App Store release and TestFlight setup • Bug fixing, refactoring, performance improvement, and feature development I don’t just write code from a task list. I help translate business goals into clear product logic, clean user flows, and scalable iOS architecture, so your app is easier to launch, test, improve, and grow. If you’re looking for an iOS Software Engineer who understands Swift, SwiftUI, UIKit, AI apps, fintech products, marketplaces, SaaS apps, API integrations, and mobile product development, send me a message. 🔧 EXPERTISE: iOS Development | iOS App Development | Swift | SwiftUI | UIKit | Mobile App Development | AI App Development | OpenAI API | ChatGPT Integration | FinTech App Development | Marketplace App Development | SaaS App Development | Firebase | Firestore | REST API Integration | API Integration | In-App Purchases | Subscriptions | MapKit | CoreLocation | MVVM | Clean Architecture | App Store Submission | TestFlight | Bug Fixing | Refactoring | UI/UX Improvements | Mobile App Architecture | AI-Driven apps | map-based apps | Mapbox | MapKit | OpenAI API | Apple Intelligence

🇩🇪Konstanz, Germany$41/hr100% JSS4.98 (7)Since Jun 2022

Earnings and projects

MRR
$0

Last 6 months ÷ 6

World#109,557 / 412k
🇩🇪Country#786 / 3,842
Revenue, last 30 days
$0
Total earnings
$30k

Billed in all: $31k

World#109,557 / 412k
🇩🇪Country#786 / 3,842
Per project
$3.4k

$0 in the last 6 months

Projects, last 6 months
1
0% fixed100% hourly
World#128,092 / 412k
🇩🇪Country#1,059 / 3,842
Projects in all
9

Across 11 contracts

64% fixed36% hourly
World#212,268 / 412k
🇩🇪Country#1,898 / 3,842

Earnings, last 30 days

$31.2kNothing earned in the last 30 daysBilled in all, before Upwork's fee · drag across the chart to see what was earned in any stretch
$30.5k$31.0k$31.5k$32.0kOct 8Oct 23Nov 7

Skills