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Hey! I'm Mykyta a mobile app developer, react native developer, and full stack developer with 10+ years of experience and 32 successfully released apps. My specialty is end-to-end mobile app development and creating high-performance cross-platform applications for wellness companies, startup projects, and SaaS businesses that actually move the needle. One of my apps earned App of the Day on the App Store. Another helped a startup raise $750k in seed funding. I've scaled products to 100K+ active users and consistently delivered 30%+ growth in user retention. That's not a pitch - that's a track record. 🏄 Why I'm the React Native Expert You're Looking For As a mobile developer, I build apps that feel truly native, not like a cross-platform compromise. Whether you're comparing React Native vs Flutter, need a hybrid approach, or want a flutter developer perspective to make the right framework choice, I help you pick the stack that fits your goals, timeline, and budget. I've shipped apps across iOS and Android using react native, Expo, TypeScript, and JavaScript, handling everything from architecture to App Store deployment. 💻 Full Stack Developer & Web Developer End-to-End Ownership As a full stack developer, I don't just hand off a mobile app and disappear. I own the entire product lifecycle, from web app development to mobile deployment: - Mobile: React Native, Expo, TypeScript, JavaScript, React Navigation, Redux/Flux, GraphQL, Axios, Reanimated, Lottie, Animated, i18Next - Backend & Cloud: Node.js, Nest.js, AWS, Firebase, Supabase, PostgreSQL, MongoDB - APIs, Analytics & Media: Stripe, PayPal, Segment, Appsflyer, DataDog, Sentry, WebRTC, Chart, Image Crop, Video, Push notifications - Auth, Security & Core: Firebase Auth, Auth0, Supabase, KYC/Onfido, React Native Gesture Handler, Device Info, Google Services - DevOps: CI/CD pipelines, Docker, AWS S3, CodePush, Appcenter As a react developer and nextjs developer as well, I complement every mobile product with robust React / Next.js frontends and Node.js-powered backends, so you get one partner for the full stack, not an agency or five freelancers you have to coordinate. 🤖 AI-Powered App Development AI is no longer optional. I build intelligent mobile features that feel natural - LLM integrations, smart recommendations, predictive UX, and personalization layers that make your product stand out. Whether you're a startup or scaling a SaaS product, having an expert in AI-native mobile development on your side is a real advantage. 🚀 MVP & Product Launch - My Specialty I've built MVPs from zero to App Store as an android developer and iOS expert more times than I can count. My process: - Clear milestones and rapid iterations for faster time to market - Secure authentication and scalable user management - UX/UI that converts and retains, I've won Dribbble Awards for this - Post-launch support so your product keeps evolving Clients come to me as a trusted full stack developer partner - not just a coder-for-hire. I've helped businesses double their GPM and achieve at least 42% ROI on their mobile investment. ⚙️ Who I Work With I'm a great fit if you're building: - A React Native cross-platform app for iOS & Android - A SaaS mobile product with a Node.js or Firebase backend - An AI-powered mobile experience -A wellness or health app (deep niche experience) - A web application alongside your mobile product as a web developer who understands mobile-first thinking If you've been evaluating a flutter developer or a full stack developer who can own your entire product lifecycle, I'd love to learn more about your project. I also regularly consult on architecture decisions for teams choosing between React Native, Flutter, and native (kotlin / swift), so even if your stack isn't finalized, that's a great starting point for a conversation. 🛠️ A Note on Stack Flexibility Over 10+ years as a mobile app developer and web developer, I've worked alongside teams using PHP/Laravel backends, and I understand how to build seamless API layers that connect any backend to a React Native frontend. If your existing backend is built on Laravel, Python, or another stack, that's not a blocker; it's just an integration challenge. 📱 Core Expertise ✔️ React Native & Expo - cross-platform mobile app developer ✔️ Full Stack Developer - Node.js, AWS, Firebase, Supabase ✔️ Web Developer & React Developer - Next.js, REST & GraphQL APIs ✔️ Flutter & React Native comparison consulting ✔️ AI app development - LLM integrations and smart UX ✔️ SaaS MVP launch - from wireframe to 100K users ✔️ App Store & Google Play deployment - 32 apps shipped Let's build something that matters. Drop me a message and tell me what you're working on. I'll give you my honest take within 24 hours. Key Words: Flutter Developer | Android Developer | React Native Developer | Nextjs Developer | React Developer | Web App Development | Python Developer | Wordpress Developer | iOS Developer | Android Developer

I help startups, VCs and tech companies de-risk launches and investments as a hands-on CTO, architecture advisor, and technical due diligence partner. Expert-vetted, Top 1% on Upwork. Software development expert with over 16 years of experience in companies of different scale: from startups to world-leading enterprise companies with more than 10 years in leadership roles, always staying hands-on with development activities. Last years I'm focused on Mobile, Web & Backend Apps development (together with all underlying infrastructure it may involve), however, I have experience in variety of technological domains: embedded software, desktop software, mobile (iOS/Android), distributed WEB systems (portals, CRM). I have been working as a contractor CTO for several start-ups, which received more than $2M in seed round funding. As a CTO I was responsible for building the entire product architecture from scratch (Cloud infrastructure, Backend, API, Mobile, Web and Desktop apps), implementing the software, hiring and managing the team, and ensuring stable day-to-day operations, as well as developing the technical strategy. I'm experienced working with AI and ML tasks and integrations, in both AI-first projects, as well as using AI and ML features to add to existing products. Main programming languages: Java (including Android SDK), Kotlin, Swift, Flutter, JavaScript/TypeScript (React.Native, React, Node.JS) I can also provide services in: Python, C/C++, PHP

Greetings, With over 15 years steeped in the world of software development, I’ve dedicated a significant portion of my professional journey to crafting high-quality iOS applications. The path from conceptualizing an idea to witnessing its tangible transformation on an iPhone or iPad is one I've walked many times. As the director of a software testing studio, I bring not only development expertise to the table but also a rigorous standard for software quality and performance. Every application tells a story, and my team and I are committed to ensuring that story is told seamlessly. If you're seeking a seasoned perspective and a reliable hand in bringing your iOS vision to fruition, I invite you to connect. Let's embark on this journey together. Warm regards. Kiryl

I help startups and growing teams design, operate, and optimize reliable cloud platforms with a strong focus on scalability, cost control, and long-term maintainability. I’m a senior DevOps and Platform Architect with hands-on production experience across Azure, AWS, and on-prem environments. I’ve worked with both Kubernetes-focused startups and large enterprises, including AT&T and Dish Wireless, where I supported customer-facing platforms and complex cloud infrastructure. My work typically begins where generic DevOps support ends—when systems become difficult to scale, cloud costs start growing unpredictably, or teams need a platform they can confidently run in production. What I specialize in • Production-grade Kubernetes platforms on AKS and EKS, including private clusters • Ingress and traffic management using NGINX, Application Gateway, and internal load balancers • Secure cloud networking, VNET/VPC design, and hybrid connectivity • Infrastructure as Code ownership using Terraform across multi-cloud and on-prem environments • CI/CD pipelines for applications and infrastructure • Cloud cost optimization and FinOps-focused architecture improvements • Practical AI-assisted DevOps tooling to improve visibility, documentation, and operational decision-making How I work I primarily work on monthly retainers, acting as a long-term DevOps and platform partner rather than a short-term task executor. Typical engagements include platform audits, infrastructure redesigns, cost optimization initiatives, and ongoing ownership of cloud and Kubernetes environments. Background • Worked with Kubernetes-focused companies such as Magalix (Weaveworks) and Kasten(dot)io (Veeam) • Delivered customer projects for AT&T and Dish Wireless • Multi-cloud production experience across Azure, AWS, and on-prem • Certified Kubernetes Application Developer (CKAD) • AWS Developer Associate • Terraform Associate • Udacity DevOps Engineering Nanodegree • Bachelor’s degree in Computer Science If you’re looking for a DevOps partner who can design and operate complex platforms, reduce operational risk, and think ahead about scale, cost, and reliability, I’d be happy to discuss how I can help.

🚀 Hey there! I'm your mobile app wizard! 😃 For over seven years, I've been transforming ideas into stunning mobile applications as a Senior Android developer. My expertise is mostly in the Android platform, and I'm proficient in Kotlin, Java, Swift, Flutter, Android SDK. Here’s a glimpse of what I bring to the table: ✅ Client-server applications with REST GraphQL APIs Apollo ✅ Productivity tools ✅ Social networking applications ✅ Health and wellness platforms ✅ Sport applications ✅ Utility software ✅ AI-driven solutions with ChatGPT OpenAI integration ✅ Audio player apps I have a strong foundation in Object-Oriented Programming and Design OOP OOD, and my skills extend to networking, local data, user interfaces, and deployments. I'm a proponent of design patterns and adhere to development methodologies like Scrum and Agile, always enriching the development process with my insights. Key Skills: ✔️ Cross-Platform Development: Flutter, Dart, In-App Purchases, Performance Optimization, Push Notifications, Localization, Facebook SDK, Google SDK, Firebase, Riverpod, Provider, GetX. ✔️ Android Development: Java, Kotlin, Android Studio, XML Layouts, Activities, Fragments, Material Design, Android SDK, SQLite, Room Database, Gradle, Android App Architecture, Push Notifications, Firebase, RESTful API Integration, Recycler View, Dependency Injection Dagger Hilt, Jetpack Components ViewModel LiveData Navigation, UI, UX Design, Responsive Design, Geolocation, Maps Google Maps API, Performance Tuning, Data Binding, Android NDK, Gradle Plugins, App Distribution, Accessibility, Firebase, Firebase Analytics.