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👋 My name is Yuri — I'm Upwork's #1 iOS developer in Ukraine. I'm the founder and lead engineer at Helicon, an award-winning mobile development team. Together, we bring decades of experience in building software with a mission of delivering exceptional results at an impressive pace. Are you looking to create an app and need an expert developer who speaks fluent English? I specialize in: — iOS development (UIKit, SwiftUI) — macOS development (Cocoa, SwiftUI) — Vision Pro, Apple Watch, and Apple TV apps — Product management & expert advice for software projects. At Helicon, we are skilled in most of the well-known Swift frameworks as well as third-parties. See the full list below: — UI Frameworks: SwiftUI, UIKit, Combine, RxSwift, The Composable Architecture (TCA) — Backend & Auth SDKs: Firebase, AWS Amplify, Supabase Swift, Auth0, Appwrite — 3D Frameworks: RealityKit, ARKit, SceneKit, Model I/O, Quick Look — Networking Libraries: URLSession, Alamofire, Moya, Apollo iOS, gRPC — Image & Animation Libraries: Kingfisher, SDWebImage, Nuke, Lottie, AVFoundation — Data Persistence Libraries: SwiftData, Core Data, Realm, GRDB, KeychainAccess — Analytics & Monitoring Tools: Firebase Analytics, Mixpanel, Amplitude, Sentry, Branch — Payments & Subscription SDKs: StoreKit, RevenueCat, Adapty, Stripe, Paddle — Developer Tools & Dependency Managers: Swift Package Manager, CocoaPods, Carthage, SwiftLint, SnapKit — Device & Platform Frameworks: CoreLocation, MapKit, HealthKit, CoreBluetooth, WidgetKit I can also assist you with app distribution, marketing, and launch using: — App Store Connect — Apple Developer Platform — Apple Search Ads — Meta Ads Manager (f.k.a. Facebook Ads Manager) My team has first-hand expertise in applying AI models like Claude Opus and GPT-5 to the mobile development workflow, allowing us to offer a great turnaround time for your project without ever sacrificing the human touch. Advanced English proficiency is a requirement for every developer working at Helicon. We also communicate freely, Ukrainian, Polish, and Russian. Don’t hesitate to send me a quick message and we will go over your idea in detail over a video call or through Upwork chat!

If you used tools like Cursor, Claude, Bolt, Lovable, Replit or v0 to speed up development and the app is now stuck at the “almost done” stage I can help you finish it and ship it. Many AI-assisted React Native projects run into the same blockers: unstable code patterns, production-only bugs, broken builds, store compliance issues, and performance that wasn’t optimized. 🏆I’m a React Native developer (Expo + RN CLI) building and stabilizing iOS & Android apps with TypeScript and a production mindset. My focus is turning a shaky MVP into a release-ready product you can safely maintain and scale especially for fast-moving startups (EU time zone). ⚙️ What I typically improve Clean up AI-generated code: structure, consistency, TypeScript hygiene, reliable state patterns Fix “works locally” problems: environment/config, build settings, permissions, native configs Resolve App Store / Google Play blockers: privacy, permissions, guideline compliance, release setup Performance: slow lists, unnecessary re-renders, navigation bottlenecks, memory spikes 🌍Integrations I work with often Backend: Supabase, Firebase Subscriptions: RevenueCat, Adapty, Superwall Analytics & attribution: AppsFlyer, Adjust, Tenjin, Meta SDK, TikTok SDK Push: OneSignal, Expo Notifications / FCM AI APIs: OpenAI, Whisper, Claude API Native features: camera, authentication, payments, deep linking 📱 Mobile Development Expertise: React Native (CLI & Expo) for cross-platform development Firebase (Authentication, Firestore, Cloud Messaging, Push Notifications) API Integration (RESTful APIs, GraphQL) App Testing, Debugging, and Optimization App Store & Google Play Deployment 💼 Industries I Work With: Crypto Apps E-commerce Apps Fitness & Health Tracking Education and Learning Platforms Social Media and Chat Apps Food Delivery and Booking Apps Utility and Productivity Tools 🚀 Why Choose Me: Dedicated developer with strong problem-solving skills Fast learner who adapts quickly to project requirements Clear communication and regular progress updates Focused on long-term collaboration and continuous improvement Passionate about writing clean, maintainable, and scalable code 📞Need a clean build from day one? I also develop apps from scratch with a scalable architecture and a single codebase for iOS/Android, ready for real users and store releases. 🔑 SEO for you my dear client 🙂 React Native, Expo, React Native CLI, TypeScript, iOS, Android, AI App Development, OpenAI, Supabase, Firebase, RevenueCat, OneSignal, AppsFlyer, Adjust, REST API, GraphQL, Performance Optimization, App Store, Google Play.

I specialize in WordPress Website Development and Custom WordPress Development & Design for businesses that need a fast, scalable, and conversion-focused WordPress Website. My work combines WordPress Website Design, Custom WordPress Website Development, Website Development, performance optimization, SEO structure, and clean content management. I don’t just build pages. I help turn a WordPress Website into a working business asset that generates leads, sales, and long-term value. More power with 'My ideal flow'™: Idea → Discovery → Prototype → Design → Development → Testing → Launch → Support. 12+ Years on Upwork $600K+ Total Earnings 200+ Satisfied Clients 80+ Jobs Completed 100% Job Success Score Top Rated Plus Freelancer “Dmitry is always solution orientated and a clear communicator. He is committed to the quality of the project and is very detail oriented. He is always held accountable for outcomes.” Client review For most clients, WordPress Website Development is not just about building pages. Good WordPress Website Development should include structure, speed, usability, SEO basics, and easy content management. My approach to WordPress Website Development is practical: first I understand the business goal, then I plan the content structure, then I handle design, development, testing, launch, and support. That is why my WordPress Website Development process often includes Custom WordPress Development, WordPress Website Design, Website Redesign, WooCommerce, Elementor, ACF, and performance optimization. I am a WordPress Developer, WordPress Website Expert, and Web Developer focused on Custom WordPress Development, WordPress Website Design, WordPress Elementor, WooCommerce, Website Redesign, Website Customization, WordPress Website Optimization, and WordPress SEO. Typical work includes: WordPress Website Development Custom WordPress Website Development Custom WordPress Development WordPress Website Design WordPress Design WordPress Elementor development WooCommerce and Ecommerce Website development Website Redesign Website Customization WordPress Website Optimization WordPress SEO structure ACF, flexible content, and custom admin systems Custom themes and WordPress Theme development WordPress Plugin customization API integrations with CRMs, marketing tools, payment systems, and automation platforms Front-End Development with HTML, CSS, JavaScript, and PHP Most of my projects go beyond standard brochure sites. Clients usually come to me when their current WordPress Website is slow, hard to manage, difficult to scale, or not converting visitors into leads and customers. Some projects require Custom WordPress Development with ACF, Options Pages, flexible content blocks, structured page systems, custom post types, and clean admin logic. Others need WooCommerce functionality, subscriptions, custom checkout flows, payment logic, product structures, or integrations with third-party platforms. From the design side, I focus on WordPress Website Design that supports real business goals: clear user flow, strong content hierarchy, responsive layouts, conversion-focused sections, and SEO-friendly structure. I also work on Website Redesign projects where the existing site already has traffic, but the design, performance, structure, or user experience is holding it back. In those cases, I rebuild the WordPress Website with better UX, better speed, better SEO structure, and easier content management. A large part of my work is built with WordPress Elementor when clients need speed, flexibility, and easy editing. For more complex projects, I use Custom WordPress Development instead of relying only on builders. My projects often include: Custom WooCommerce functionality Performance optimization and Core Web Vitals Large or complex WordPress Websites Multi-language and multi-site structures Advanced ACF usage Gutenberg and custom blocks API integrations Plugin conflict debugging Server-level and database-level issue solving Responsive Front-End Development At the core, every project combines three things: WordPress Website Development, WordPress Website Design, Custom WordPress Development. Not as separate services, but as one system that impacts revenue, user behavior, speed, search visibility, and long-term scalability. I work as a WordPress Developer and WordPress Designer for WordPress Website, WordPress Development, Elementor, WooCommerce, SEO, Website Design, Web Development, and conversion-focused builds. If you are looking for a WordPress Website Developer, WordPress Development Expert, Web Developer, or Website Design partner who can handle both design and development, I can help you plan, build, optimize, and support your WordPress Website from idea to launch.

Hi! 👋 Need a sleek, scalable Web or Mobile app? I help startups and businesses turn ideas into powerful digital products - combining seamless development with stunning UX/UI design. We have experience in such stacks: 📌 Front-end: ReactJS | VueJS | Backbone | JQuery | HTML5/CSS3 📌 Back-end: PHP, Wordpress | NodeJS, Express | Python | API servers | Java (Spring)| Ruby 📌 Mobile development: Swift | Kotlin | Objective-C | React Native | Flutter 📌 UI/UX design, UX audit, logo and branding, wireframing, prototyping 📌 Frameworks and CMS: Symfony | Django | WordPress | CakePHP | CodeIgniter 📌 VR/AR and 3D design: Unity 3D | 3DMax | Visual Studio | Blender 3D | Houdini 📌 QA: manual functional, tests automation 📌 Machine Learning, AI, Data Science You are welcome to schedule a call and I'll be glad to discuss with you the opportunity to cooperate. See you soon!

Hi there! I believe in letting my work speak for itself. Here’s what I bring to the table: 🎨 Clean and intuitive UX/UI design 📐 Strong knowledge of design principles 📱 Familiarity with Human Interface Guidelines 🛠 Proficient in Figma tools: auto layouts, components, and prototyping 🧩 Clear and logical wireframing 🔲 Expertise in the 8-grid layout system 🚀 Responsive design for all screen sizes 🎯 User-centered design focused on solving real problems 🔄 Experience with design systems for consistency and scalability ⚡️ Interactive prototypes to bring ideas to life 📊 Ability to apply user research and feedback to improve designs If you’re looking for thoughtful, user-friendly, and well-structured designs, feel free to reach out - I’m ready to deliver great results! 🔑 Keywords Mobile App Design, UI Design, UX Design, Interaction Design, User Flows, Wireframing, Prototyping, App Redesign, Accessibility Design, Responsive Design, Cross-platform Design, Minimalist UI, Functional Design, Intuitive Design, Scalable Design Systems, Usability Testing, Visual Hierarchy, Typography, Color Theory, iOS App Design, Android App Design, Material Design, Human Interface Guidelines (HIG), App Store Optimization (ASO), Flutter UI Design, SwiftUI Design, React Native UI, Figma, Adobe XD, Sketch, InVision, Zeplin, Protopie, Balsamiq, Miro, Canva, Principle, Axure, Marvel App, Overflow, Modern UI, Clean Design, Flat Design, Minimalism, Neumorphism, Skeuomorphism, Glassmorphism, Dark Mode Design, Light Mode Optimization, Adaptive Design, Micro-Animations, Motion Design, Data Visualization, Infographics, Agile Design, Lean UX, Design Thinking, User Research, A/B Testing, Design Sprints, Storyboarding, Journey Mapping, Competitive Analysis, User Personas, Heatmap Analysis, Branding, Logo Design, Icon Design, Illustration, Custom Icons, Typography Design, Interactive Design, Product Design, Mockups, Clickable Prototypes, Design System Creation, Social Networking App Design, Messaging App UI, E-commerce App Design, FinTech App UI, Health & Fitness App UI, SaaS Platform UI, Utility App Design, Travel App UI, Food Delivery App UI, Educational App Design, Productivity App Design, UI/UX Freelancer, Mobile Design Expert, UI Specialist, UX Consultant, App Design Professional, User-centered Design, Creative Problem Solving, UI Trends, UX Principles

Designer with over 10 years of experience in mobile games and visual content for apps. - Full game art production – from UI/UX to characters, backgrounds, and game scenes - 2D assets – environments, characters, icons, props, menus - Mobile game UI – playful, intuitive, responsive designs (especially for kids’ and casual games) -Promo graphics – eye-catching visuals for stores and marketing -Unity-ready layouts – organized, dev-friendly files ready for implementation I’ve worked on hidden object games, AR apps, and educational games, and can help bring your project to life from concept to final polished assets. I provide clean communication, creative thinking, and results that match both your vision and technical needs. Let’s make your game stand out – visually and functionally!