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⚡ Real code, real deadlines, no empty promises. I'm here for your React and React Native projects, whether you're starting fresh or fixing what's broken. I'm Halyna from Koitechs. We fix that: 90+ companies found their React Developer or React Native Developer here - vetted, in-house, matched in 48 hours. 🏆 Why clients work with us ✅ 7+ years of commercial software development experience ✅ 50+ web and mobile projects delivered ✅ 75% repeat clients ✅ 98% client satisfaction rate ✅ 40+ in-house engineers across React, React Native, Node.js, and TypeScript ✅ 48-hour developer matching ✅ 2-week trial period ✅ In-house React Developer s / React Native Developer s only - no freelancers ✅ QA, PM, code review, and CTO oversight available Most companies come to us after missed deadlines, unstable products, or hiring a React Developer or React Native Developer who couldn't deliver in practice. If you're looking for a React Developer, React Native Developer, Frontend Developer, Mobile Developer, Full Stack Developer, or a React / React Native Development team that can contribute from day one, that's exactly where we help. We work with companies that need: • a React Developer for web app development - 30+ web apps shipped • a React Native Developer for MVP development - 70+ MVPs launched • a Full Stack Developer for scaling existing products • a React Native Developer experienced with GPS, payments, chat, and real-time functionality • a Mobile Developer for iOS and Android applications - 500K+ downloads • a Frontend Developer for startup and SaaS products • a Node.js Developer for backend and API development - 1M+ API requests/month • a Full Stack Developer who can join an existing team quickly 💻 React & React Native Development Our React Developer s and React Native Developer s have experience building: • 15+ healthcare and logistics platforms with React and Node.js • 25+ fitness and SaaS products with React Native • 20+ marketplaces and e-commerce apps with React • apps with GPS, chat, and video functionality • $5M+ processed - React and React Native apps with payment integrations • apps with push notifications and real-time features • React and React Native apps connected to complex backend systems built with Node.js Our React Developer s and React Native Developer s help clients launch new web and mobile products, improve existing React applications, scale React Native platforms, and modernise legacy codebases. 🚀 Services • React Web App Development • React Native Mobile App Development • Full Stack JavaScript Development • Node.js Backend Development • MVP Development (Web & Mobile) • Product Scaling • Frontend Development • Application Maintenance & Modernisation • React / React Native Consulting • Team Extension • Performance Optimisation • Feature Development • Application Support 🛠 Tech Stack React, React.js, React Native, Next.js, Node.js, Frontend Development, Full Stack Development, Expo, Mobile App Development, iOS Development, Android Development, TypeScript, JavaScript, Redux Toolkit, React Query, Firebase, Supabase, PostgreSQL, MongoDB, GraphQL, REST API, OAuth, Stripe, AWS, Docker, Vercel, Prisma, Drizzle, Git, Agile, WebSockets, Storybook, Jest, Detox, Push Notifications, App Store, Google Play, SaaS Development, Flutter. Beyond React and React Native Development, our developers also support backend architecture with Node.js, API Integration, payment systems, Next.js applications, OpenAI and Claude API integrations, AI Agent Development, Generative AI, Python, Data Analysis, and product modernisation projects. 🤝 What makes us different ✔ In-house React Developer s / React Native Developer s only ✔ Full Stack Developer s matched to your product needs ✔ Clear communication, weekly reports and demos ✔ 75%+ clients stay with us 6+ months We don't just send CVs. We connect companies with React Developer s and React Native Developer s who have already built similar web and mobile products and can start contributing quickly. Whether you need a React Developer for a new web application, a React Native Developer for ongoing mobile development, a Node.js Developer for backend systems, a Frontend Developer for a growing startup, a Full Stack Developer for end-to-end product work, or a dedicated React / React Native Development team, we can help. React Developer • React Native Developer • Full Stack Developer • Frontend Developer • Node.js Developer • Mobile Developer • React Native Development • React Web Development • Mobile App Development • iOS Development • Android Development • Web Developer • MERN Developer • Scala Developer • WordPress • Laravel • Vue • Angular Let's talk 🤝

Senior Fullstack Engineer and Tech Lead with 6+ years of commercial experience building web and mobile products. I specialize in taking startup ideas from concept or MVP to production by owning the entire technical lifecycle — architecture, implementation, deployment, and long-term evolution. Comfortable making technical decisions independently, leading development, mentoring engineers, and delivering scalable solutions using modern JavaScript/TypeScript technologies. I actively leverage AI to automate routine engineering tasks, accelerate delivery, and focus on high-impact technical decisions.

🎮 VFX & Animation Artist | Unity3D Expert | Game Visuals & Motion Graphics Do you need stunning animations and optimized visual effects that make your game stand out? I help developers and studios bring their ideas to life through high-quality VFX, animation, and gameplay visuals in Unity3D. 🔹 What I do: • Create real-time visual effects, particle systems, and shaders in Unity3D • Animate characters, UI elements, and gameplay interactions • Design motion graphics and promo materials in After Effects • Optimize visual content for mobile and PC performance 🧠 Tools I use: Unity3D, After Effects, Photoshop, Cinema4D, Final Cut Pro, Git, Jira, ClickUp 🚀 Why clients choose me: • 13 years of experience in the game industry • Worked on multiple social casino and casual titles, delivering up to 2 games per month • Fast, reliable, and always focused on visual impact and performance Let’s create visuals that truly engage players and make your game shine!

𝟓+ 𝒀𝒆𝒂𝒓𝒔 𝒐𝒇 𝑬𝒙𝒑𝒆𝒓𝒊𝒆𝒏𝒄𝒆 | 𝑼𝒏𝒊𝒕𝒚 𝑮𝒂𝒎𝒆 𝑫𝒆𝒗𝒆𝒍𝒐𝒑𝒎𝒆𝒏𝒕 | 𝑪𝒓𝒐𝒔𝒔-𝑷𝒍𝒂𝒕𝒇𝒐𝒓𝒎 𝑺𝒐𝒍𝒖𝒕𝒊𝒐𝒏𝒔 (𝑨𝒏𝒅𝒓𝒐𝒊𝒅, 𝒊𝑶𝑺, 𝑷𝑪, 𝑾𝒆𝒃𝑮𝑳) Hi! My name is Victoria, and I am a Unity Developer with over 5 years of hands-on experience building high-quality, well-optimized games for Android, iOS, PC, and WebGL. I work as an independent specialist, and when needed, I collaborate with a small, trusted team. This allows me to deliver full-cycle game development from idea and prototyping to release, post-launch support, and scaling. I am not an agency, which means direct communication, fast decision-making, and no unnecessary overhead. I work both with small MVPs and prototypes as well as full-scale commercial projects. I can develop games from scratch or join existing projects to improve performance, expand features, refactor code, and help bring the product to a successful release. 𝐅𝐮𝐥𝐥-𝐂𝐲𝐜𝐥𝐞 𝐆𝐚𝐦𝐞 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 & 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞 𝑭𝒖𝒍𝒍-𝒄𝒚𝒄𝒍𝒆 𝒈𝒂𝒎𝒆 𝒅𝒆𝒗𝒆𝒍𝒐𝒑𝒎𝒆𝒏𝒕 Concept, game design, prototyping, development, 2D/3D art integration, UI/UX, animation, testing, release, and post-launch support. 𝑷𝒍𝒂𝒚𝒂𝒃𝒍𝒆 𝑨𝒅𝒔 𝑫𝒆𝒗𝒆𝒍𝒐𝒑𝒎𝒆𝒏𝒕 Creation of lightweight, highly optimized playable ads for various advertising networks. 𝑷𝒓𝒐𝒈𝒓𝒂𝒎𝒎𝒊𝒏𝒈 & 𝑨𝒓𝒄𝒉𝒊𝒕𝒆𝒄𝒕𝒖𝒓𝒆 Unity, C#, gameplay systems, architecture, optimization, Zenject, UniTask, Scriptable Objects. 𝑮𝒓𝒂𝒑𝒉𝒊𝒄𝒔 & 𝑽𝑭𝑿 Shader Graph, Particle Systems, VFX Graph, audio integration (FMOD). 𝑴𝒐𝒏𝒆𝒕𝒊𝒛𝒂𝒕𝒊𝒐𝒏 & 𝑨𝒏𝒂𝒍𝒚𝒕𝒊𝒄𝒔 AdMob, Appodeal, IronSource, In-App Purchases, GameAnalytics. 𝑩𝒂𝒄𝒌𝒆𝒏𝒅 & 𝑴𝒖𝒍𝒕𝒊𝒑𝒍𝒂𝒚𝒆𝒓 Firebase (Auth, Realtime Database, Firestore), Photon (multiplayer), REST APIs, WebSockets. 𝑷𝒍𝒂𝒕𝒇𝒐𝒓𝒎𝒔 & 𝑫𝒆𝒑𝒍𝒐𝒚𝒎𝒆𝒏𝒕 Google Play Console, App Store Connect, PC (Windows/Mac), Android, iOS, WebGL. 𝑷𝒓𝒐𝒋𝒆𝒄𝒕 𝑴𝒂𝒏𝒂𝒈𝒆𝒎𝒆𝒏𝒕 & 𝑪𝒐𝒍𝒍𝒂𝒃𝒐𝒓𝒂𝒕𝒊𝒐𝒏 Jira, Trello, GitHub, GitLab, Agile / Waterfall. I offer flexible collaboration models, competitive pricing, and studio-level quality with a personal, hands-on approach. 💡 If you have a game idea, an existing project, or need help with development, optimization, art, testing, or playable ads I’d be happy to discuss and help bring your project to life.

✅I work with SaaS companies and product teams whose codebase can't keep up with growth. I fix what's slowing them down so they ship 4x faster, stop losing users to downtime, and scale with confidence. "He took our legacy SaaS codebase from 520K lines down to 80K. 400% speed boost in development velocity, with zero downtime for our 5000+ users.", — Founder of EdTech Platform 🏆 Senior Full Stack Developer | 6+ years in Next.js, Node.js, React, Laravel and AI SaaS ABOUT ME 8+ years and 45+ products delivered as a Senior Full Stack Developer specializing in Platform, MVP, AI-Powered and Web Application delivery on Next.js and Node.js. $4.2M+ client impact and $1.1M+ direct revenue as a Senior Full Stack Developer working across React, Next.js and Node.js. 22,000+ active users across Web + Mobile products where React frontend paired with Node.js backend lifted engagement by 18-27%. 12,000+ users across Fintech and Payments platforms where a Senior Full Stack Developer's Next.js ownership cut reconciliation time by 40%. 2,600+ completed orders, 520+ registered customers in an Ecommerce and CRM Platform MVP delivered as a Senior Full Stack Developer on Next.js. 90% faster order processing, 80% lower manager workload through workflow automation and React improvements as a Senior Full Stack Developer on Node.js. 1,800+ catalog items, 4-role access, 2.8x operational capacity in a B2B SaaS Marketplace built as a Senior Full Stack Developer on Next.js and Node.js. 5-8 weeks shorter MVP-to-pilot launch, 35% fewer bugs through codebase stabilization and SaaS productionization work as a Senior Full Stack Developer. $1.1M+ in client revenue as a Senior Full Stack Developer on Next.js and React, 8+ years as a Node.js engineer. 18-27% engagement lift, 30-40% faster cycles, cleaner UX and stronger retention as a Senior Full Stack Developer on React, Next.js and Node.js. As a Senior Full Stack Developer, I treat every build as a long-term SaaS asset, not a one-off delivery. ✅ WHERE I DELIVER As a Senior Full Stack Developer on React - 20+ SaaS systems with UI development, dashboards and responsive builds across SaaS Platform, Booking Platform and Ecommerce SaaS products. As a Senior Full Stack Developer on Next.js - 15+ SaaS launches, 30-40% faster iteration through design-to-code and component work. As a Senior Full Stack Developer on Node.js - 25+ end-to-end SaaS builds with backend APIs, data architecture and secure, scalable systems from early-stage MVP to live SaaS Platform. As a Senior Full Stack Developer across React and mobile app builds - UI polish and mobile improvements boosting conversion by 15-22% on SaaS products. 10+ deployed mobile SaaS apps in the App Store and Google Play as a Senior Full Stack Developer. 12-19% better repeat usage through booking, notifications and payments on SaaS platforms built as a Senior Full Stack Developer. As a Senior Full Stack Developer with Python and Django experience - 12+ backend-heavy SaaS products, 28% lower delivery risk. As a Senior Full Stack Developer - 6-18 month cycles scaling existing SaaS platforms as a long-term partner, holding 99%+ delivery consistency across distributed SaaS teams on React, Next.js and Node.js. ✅ INDUSTRY IMPACT Marketplace, B2B SaaS - 55,000+ active listings, 20%+ better lead quality and a 35% increase in conversion rates as a Senior Full Stack Developer on React and Next.js handling $2.3M+ in monthly SaaS transaction volume. Fintech SaaS, Payment Orchestration, PSP Integrations - 12,000+ transactions processed daily, 500+ merchant accounts onboarded, 25%+ faster settlement and 15% fewer failed payments as a Senior Full Stack Developer maintaining 99.9% SaaS uptime on Node.js. AI-Powered SaaS - 6+ products deployed, custom AI agents, RAG chatbots, OpenAI and Claude API integrations as a Senior Full Stack Developer on React and Node.js, processing 16,000+ daily prompts and cutting query time by 40%. Logistics SaaS, ERP - up to 12 hours saved per order cycle, 30%+ faster reporting and a 40% reduction in data-entry errors across 5+ regional hubs as a Senior Full Stack Developer on Next.js. Fintech SaaS, PropTech SaaS, LegalTech SaaS - 18% better adoption, 40% higher retention over 6 months and structured permissions managing 5,000+ users as a Senior Full Stack Developer on React. ✅ HOW I BUILD 25+ SaaS products as a Senior Full Stack Developer on React: React Native, Next.js, TypeScript, JavaScript, HTML5, CSS3, Tailwind, Responsive Design. 15+ SaaS systems as a Senior Full Stack Developer on Node.js: PostgreSQL, MySQL, MongoDB, Firebase, Stripe, integrations across payment, maps, auth and third-party APIs. 10+ SaaS ecosystems as a Senior Full Stack Developer: WordPress, Shopify, PHP, Flask, Python, Django, MERN stack on Next.js and Node.js. 40+ SaaS products as a Senior Full Stack Developer: Git, software architecture, front-end development with an engineer's mindset applied to every SaaS Platform I ship.

🔥 Your reliable tech partner. 💸 I value your time and budget. ❤️ Client-focused. 🎯 I say less, deliver more. ABOUT ME 8+ years and 60+ products as a Full Stack Developer React Node in SaaS Platform, MVP, AI-Powered and Web Application delivery. $3.8M+ client impact, $900K+ direct revenue volume as a React Developer. 20,000+ active users across Web + Mobile Apps where Frontend React Developer execution with n8n supabase lifted engagement by 18–27%. 10,000+ users in Healthcare Web Application and HIPAA-Compliant systems where Frontend React Developer (flutterflow, v0, aws) ownership cut admin friction by 40%. 2,423 completed orders, 489 registered customers in Ecommerce Website and CRM Platform MVP as a Full Stack Developer React Node. 90% faster order processing, 80% lower manager workload through Workflow Automation, Document Workflow, and Frontend React Developer improvements. 1,666+ catalog items, 4-role access, 2.7x operational capacity in B2B Marketplace and Registration and CRM System as a Full Stack Developer React Node. 5–8 weeks shorter MVP to Pilot Launch, 35% fewer bugs through Existing Codebase and Productionise work as a Full Stack Developer React Node $900K+ in client revenue as react next js developer, and 8 years as web app developer react / react app developer $3.8M+ client impact, end-to-end ownership as Full Stack Developer React Node.18–27% engagement lift, clarity and trust as Frontend React Developer 30–40% faster cycles, cleaner UX, stronger retention across SaaS Platform products as React Developer WHERE I DELIVER As a Frontend React Developer - 20+ systems with UI Development, UI/UX, Dashboard Build, Responsive UI Build across SaaS Platform, Booking Platform, Ecommerce Website. As a React Developer - 15+ launches in full stack developer nextjs environments, 30–40% faster iteration through Design-to-Code and Component Development. As a Full Stack Developer React Node - 25+ end-to-end builds with Backend API, Backend System Development, Data Architecture, Secure, Scalable architecture from Early-Stage MVP to Live SaaS Platform. As a frontend developer react, front end developer react, react native expo - web design, UI Polish ( ux designer ), front end development improving conversion by 15–22%. 10+ deployed mobile app in app and google play store as react native developer expo, react native app developer. 12–19% better repeat usage through booking, notifications, payments as front-end developer flutter and mobile app developer. As react frontend developer angular, python developer, python full stack developer django - 12+ backend-heavy products, 28% lower delivery risk ( nodejs ). As a Full Stack Developer React Node - 6–18 month cycles through Scale Existing Platform, Professionalize & Scale, Review, Improve & Launch as a Long-Term Development Partner. As a full stack react developer and full stack developer supabase react - 99%+ delivery consistency across distributed teams ( react developers ethiopia ). INDUSTRY IMPACT Marketplace Platform, B2B Marketplace, Two-Sided Marketplace, B2B Services - 50,000+ active listings, 20%+ better lead quality, and a 35% increase in conversion rates as a Frontend React Developer and Full Stack Developer React Node handling $2M+ in monthly transaction volume. Healthcare Web Application, Clinic Management SaaS, Telehealth, HIPAA-Compliant - 10,000+ active users, 500+ daily appointments processed, 25%+ better staff capacity, and 15% fewer patient no-shows as a Frontend React Developer maintaining 99.9% system uptime. AI-Powered - 5+ products deployed, Custom AI Solutions, AI Agent Platform, AI Chatbot, RAG Chatbot, OpenAI, Claude API, FastAPI as a React Developer and Full Stack Developer React Node, processing 15,000+ daily prompts and reducing manual query resolution time by 40%. Logistics Platform, ERP, Internal Workflow Management System, Owner Dashboard - up to 12 hours saved per order cycle, 30%+ faster reporting, and a 40% reduction in data entry errors across 5+ regional hubs as a Full Stack Developer React Node. Research Platform, LegalTech SaaS, Fintech MVP, PropTech MVP - 18% better adoption, 40% higher user retention over 6 months, and structured permissions managing 3 distinct access levels for 5,000+ users through Frontend React Developer HOW I BUILD 50+ products as a Frontend React Developer: java react, react.js, react native mobile, react next tailwind frontend, javascript, typescript, html, html5, css3, Tailwind CSS, React Bootstrap frontend, Responsive Design, jQuery. 25+ SaaS as a Full Stack Developer React Node: supabase postgres, laravel, MySQL, MongoDB, firebase, stripe. Integrations across payment, maps, auth, and third-party APIs. 10+ projects: wordpress developer, shopify, web3 frontend, php, .net, flask, vue.js, svelte, webflow, mern stack as a react js developer and react web developer. 40+ products: git, Software Development, Software Architecture & Design, Front-End Development with engineer mindset.