✨ Native iOS/macOS Apps Developer 👨‍💻 I have been building iOS apps since 2011, and I love it. I know what it's like to start an indie project, launch a startup, and grow a product with millions of users. I'm eager to use that experience to ensure your business success. What I offer: • iOS Engineering: ◦ Swift / Objective-C ◦ SwiftUI / UIKit / Autolayout / Lottie ◦ Firebase ◦ Software Design: Clean Architecture, MVVM / MVC / MVVM+R / VIPER ◦ Concurrency: GCP, Operation Queue, and Modern Concurrency (async / await) ◦ Payments: In-App Purchases and In-App Subscriptions. ◦ CocoaPods, Swift PM, Carthage, git ◦ Unit / Integration / UI Tests ◦ Networking: HTTPs, REST, WebSocket using native APIs / Alamofire / Kingfisher / Starscream, etc. ◦ Persitance: Core Data, Sqlite, Realm ◦ OpenAI API / CoreML / CreateML ◦ Bluetooth LE / working with external hardware • Code review: I can perform an audit on your project to ensure it's ready for shipment / assess its quality, and maintainability. • Consulting: ◦ Estimate time/costs on a scope you provide ◦ Determine whether some idea is feasible ◦ Research the best engineering solution for your idea

I am an iOS Developer with over 4 years of experience in developing and maintaining mobile applications. My expertise focuses on iOS app development, with a strong ability to create efficient, user-friendly, and high-performance solutions. I am ready to help you build innovative and high-quality iOS applications.

I’m a Senior iOS Engineer with 11+ years of professional experience, helping startups and enterprises build stable, scalable, and App Store–ready iOS applications. I’ve delivered 45+ production apps across fintech, healthcare, AI, IoT, and enterprise domains. My focus is not just features, it’s clean architecture, long-term maintainability, and performance-safe code that teams can confidently scale. I specialize in modern iOS development using Swift 6+, Xcode 26, SwiftUI, UIKit, Swift Concurrency (async/await), Combine, and Swift Package Manager. I design modular systems, reusable frameworks, and SDK-level integrations that remain clean and reliable as products grow. What I do best: Build production-grade iOS apps & SDKs Design scalable architectures (MVVM, VIPER, Coordinator) Create reusable frameworks & SPM modules Deliver SwiftUI & UIKit apps with smooth UI and animations Handle complex integrations (AI, AR, IoT, networking, native bridges) Ensure testing, CI/CD, and safe long-term maintenance I take full ownership from architecture and technical decisions to implementation, testing, and final delivery. Clients work with me when they want a senior engineer who gets it right the first time. If you’re looking for a reliable, experienced iOS developer who can build and scale your product with confidence, I’m ready to help.

Hello! I’m Konstantine, a skilled iOS developer with extensive experience building high-quality, native iOS applications for iPhone and iPad. I specialize in turning your ideas into innovative, user-friendly mobile apps using Swift, Objective-C, and the latest Apple development tools. Whether you need a brand-new app or improvements to an existing one, I’m ready to deliver results that exceed expectations. What I Offer: 📲 Native iOS App Development Expertise in building scalable, performant iOS apps with clean code architecture from concept to App Store deployment. ⚙️ App Maintenance & Support Ongoing app updates, optimization, and feature enhancements to keep your app secure, up-to-date, and fully functional. 🔧 Bug Fixing & Troubleshooting Rapid identification and resolution of bugs to ensure your app delivers smooth, crash-free user experiences. 🖇️ API & Third-Party Integration Seamless integration of RESTful APIs, Firebase, payment gateways, and other external services to extend app capabilities. Why Work With Me: ✅ Proven iOS Development Track Record Delivered apps in e-commerce, social networking, healthcare, education, and more — tailored to diverse client needs. ⏱️ On-Time & On-Budget Delivery Efficient project management ensures timely delivery without compromising quality or budget. 🗣️ Clear Communication & Collaboration Regular updates and transparent communication keep you informed and involved throughout the project lifecycle. 🤝 Client-Focused Approach Your satisfaction is my priority — I collaborate closely to bring your vision to life with attention to detail and creativity. ✂️ Problem Solving & Innovation Skilled at tackling complex technical challenges and finding smart, scalable solutions. ⸻ Ready to build your next iOS app? Whether it’s a startup MVP or a full-featured enterprise solution, let’s connect and create something amazing together! Reach out today.

High expertise in iOS development, specially on tackling complex problems. Focus on "done is better than perfect", always making the best tradeoffs between effort and value. With my management experience, I can either coordinate long-term projects with larger teams or take on short-term tasks to achieve quick wins. I'm also strong in troubleshooting and navigating unknown codebases, which is helpful to figure out issues with existing apps or simply adding new features.

I develop efficient, high-performance Apple Ecosystem apps (iOS, iPadOS, and macOS) using Swift, SwiftUI, and UIKit. I build clean, scalable, and well-structured solutions that turn your ideas into high-quality apps. I also work with Flutter when needed. ✔️ SwiftUI & UIKit specialist ✔️ Pixel-perfect UI and seamless UX design ✔️ Strong architecture knowledge (MVVM, VIPER, TCA, Clean Architecture) ✔️ API integration with REST, GraphQL, gRPC and Firebase ✔️ App Store deployment and maintenance experience ✔️ Cross-platform support with Flutter 🧰 Additional Tech Stack CloudKit, Firebase, Google Cloud, AWS, App Store Connect, App Clip I’m passionate about developing efficient, high-quality iOS apps that help businesses grow. Feel free to reach out. I’d love to connect and start building something great for your business.

I’m an experienced iOS developer with a strong focus on crafting high-performance mobile applications using Swift and SwiftUI. I excel in building intuitive, secure, and scalable apps, with extensive knowledge in API integration, Firebase, and payment systems like Stripe. Whether you need a new app developed from the ground up or enhancements to an existing project, I’m committed to delivering top-quality work on schedule and within your budget. In addition to my technical skills, I’m passionate about creating seamless user experiences and ensuring that every app I develop meets the highest standards of functionality and design. I’m eager to collaborate on projects that challenge my abilities and contribute to your success.

Senior full‑stack iOS engineer (Swift/SwiftUI/UIKit) who can ship the mobile app + the backend end‑to‑end (Node.js + TypeScript). If you have an existing app that needs to scale, stabilize, or move faster, I can step in, quickly get context, and start delivering. What I do best • iOS/iPadOS/macOS development in Swift (SwiftUI + UIKit) • API design + implementation (Node.js/TypeScript), Firebase, REST/GraphQL integrations • Architecture & codebase health: MVVM, DI, modularization, testing • Performance & reliability: profiling, crash fixes, memory leaks, smooth UI • Legacy modernization: UIKit → SwiftUI, Objective‑C → Swift Typical engagements 1) Audit (3–5 days, fixed price): quick assessment + prioritized plan + first fixes 2) Stabilization/feature sprint (1–2 weeks, fixed): ship milestones, unblock releases 3) Ongoing retainer (monthly): predictable delivery cadence + support Recent outcomes ✓ Built apps with 100k+ monthly active users ✓ Helped startups gain early adopters via MVP + TestFlight ✓ Modernized legacy codebases and improved performance/stability If you share your repo/API constraints and your top 1–2 goals for the next 2 weeks, I’ll propose a tight plan with milestones.

🚀 The Top 3% of Talent in iOS & 𝐀𝐈-𝐏𝐨𝐰𝐞𝐫𝐞𝐝 Mobile Development ⚡ 𝐀𝐈-𝐀𝐬𝐬𝐢𝐬𝐭𝐞𝐝 Development Workflows Accelerating Delivery by 30–40% ⚡ Experience Building 𝐀𝐈-𝐏𝐨𝐰𝐞𝐫𝐞𝐝 Mobile Apps, SaaS Platforms & Enterprise Solutions 🤖 Leveraging Modern 𝐀𝐈 𝐓𝐨𝐨𝐥𝐬 Including Cursor, Claude Code, GitHub Copilot, GPT-4/GPT-4o & Claude Sonnet 👉 WHAT YOU GET ✔️ Senior iOS Developer & AI App Developer - 10+ years experience, intelligent high-performance builds, extreme client impact, end-to-end ownership. ✔️ Swift iOS Developer - native modern interfaces, 18–27% user engagement lift, custom ChatGPT integration, and ultimate trust. ✔️ iOS Mobile App Developer - 30–40% faster release cycles, cleaner AI/UX workflows, stronger user retention across Mobile SaaS platforms. 👉 ACHIEVEMENTS ✔️ 10+ years, 17,000+ hours, dozens of products delivered as a native iOS developer, swift developer, and senior full stack developer ai and mobile application developer workflows. ✔️ Massive client impact and direct revenue generated through full-cycle development as a top-performing iOS developer ai specialist and Apple app developer. ✔️ 100,000+ active users on a popular festival companion app where native iOS mobile app development execution lifted repeat engagement by 27%. ✔️ 10,000+ users in Healthcare App and medical-compliant systems where iOS application development cut data friction by 40% using an intuitive doctor directory website layout. ✔️ High-converting generative AI pipelines, 34% faster action handling in E-commerce Marketplace App, smart assistants, and Fintech App deployments as an experienced iOS developer. ✔️ 90% faster mobile processing and local LLM execution, 80% lower client-side crash workload, 65% fewer server-roundtrips through clean API Integration, push notifications, and iOS developer ai features. ✔️ 5–8 weeks shorter Startup MVP to Pilot Launch, 35% fewer bugs through refactor existing codebase tasks, smart automation, and clean App Store submission pipelines. 👉 WHERE I DELIVER ✔️ As an iOS developer ai specialist - engineering smart features, OpenAI API configurations, Claude API integration, voice AI, and generative AI features into native mobile application development. ✔️ As a SwiftUI developer - dynamic systems with pixel-perfect design, smart assistants, local storage, and complex UI layout across iOS mobile app development and Mobile SaaS infrastructures. ✔️ As an experienced iOS developer - native applications and AI-powered mobile application frameworks built from scratch, delivering 30–40% faster iteration cycles. ✔️ As a native iOS developer - clean MVVM, MVC, and Clean Architecture implementation with secure backend API integrations from Early-Stage Prototype to live product launch. ✔️ As an iPhone app developer - complex core features including OAuth, Apple Sign-In, image & vision processing, audio transcription, in-app purchase setups, and multi-tier subscription systems with RevenueCat. ✔️ As a mobile software engineer - handling advanced audio/video solutions, geolocation services, location tracking, Apple Maps, and real-time chat messaging using WebRTC. ✔️ As a long-term iOS developer - driving ongoing maintenance, smart feature enhancement, bug fixing, and performance tuning as a reliable long-term collaboration partner. 👉 INDUSTRY IMPACT ✔️ AI Mobile App & Smart Assistants - ChatGPT integration, custom AI chatbot agents, voice AI features, generative AI prompts, LLM tools, and automated smart recommendations. ✔️ Fintech App & Wallet Systems - secure mobile banking apps, online payment setups with Stripe and PayPal, and robust local data storage solutions. ✔️ Healthcare App & Telemedicine - secure health tracking platforms, medical records access, and real-time data sync for complex health environments. ✔️ Marketplace App & Booking Systems - scalable service marketplaces, real-time booking, automated push notifications via APNs, and interactive user reviews. ✔️ Fitness App & Workout Platforms - custom sports systems, automated coaching apps, and full-cycle development for high-end Golf Training & Coaching Platforms. 👉 HOW I BUILD ✔️ 10+ years as a mobile app developer: engineering applications with Swift, SwiftUI, UIKit, Xcode, OpenAI API, Claude API, and Objective-C for legacy codebase migration and system scaling. ✔️ Architectural patterns and clean execution: utilizing MVVM, MVC, Clean Architecture, and VIPER alongside Core Data, Realm, and Firebase Cloud Messaging. ✔️ End-to-end product deployment: driving the entire cycle from Proof of Concept, prototype development, QA & DevOps integration, up to a successful publish to App Store workflow. Looking for an elite Senior iOS Developer, Swift Developer, or a trusted ai mobile app developer who can build an iPhone application from scratch, build an AI-powered iOS application, or handle full-cycle end-to-end development? Let's connect! Send an invite and let’s talk about your project goals. ☎️

Welcome! I’m a Senior iOS Engineer with 5+ years of experience and a proven track record, having worked on 10+ projects from scratch and as a key team member on large-scale apps like Obimy (8M+ downloads and top 100 in SocialMedia category). I focus on building robust, scalable iOS apps using the latest tech stack and industry best practices. Tech Stack: Swift, SwiftUI, Combine, MVVM+C OpenAI, Firebase, Realm, CoreData, CloudKit, Lottie, Alamofire, GraphQL, WebRTC, WebSocket, RevenueCat, Superwall, GoogleMobileAds, MobileVLCKit, GoogleCast, Lokalise, netfox, Adjust, Amplitude, PushNotifications, etc. Services: =====Consultation==== In-depth technical advice on app architecture, design patterns, and best practices for iOS development. =====MVP Development===== Build your Minimum Viable Product from scratch, providing end-to-end development with a clean, scalable codebase. =====Feature Implementation===== Add new features to your app, such as notifications, in-app purchases, or third-party integrations like payment gateways. =====Code Refactoring & Audits===== Review and optimize your codebase for performance, scalability, and maintainability. And much more else! 📱