10/16/2026 updated

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100 % available

Senior Full-Stack Developer / React, Nodejs, Python, three.js, React Native, Ionic / Healthcare

București, Romania
Worldwide
București, Romania
Worldwide

RustTailwind CSSFlutterC (Programming Language)HTMLJavaScript.NET FrameworkAndroid (Software)IOS ApplicationsHTML5C Sharp (Programming Language)C++ (Programming Language)Cascading Style Sheets (CSS)Mobile Application DevelopmentDjangoFabric Application Interface StandardsMobile Application SoftwarePython (Programming Language)MongoDBMySQLNode.jsIonicNext.jsSQL DatabasesWebRTCThree.js.NET CoreReact.jsSwiftuiSwift (Programming Language)Vue.jsBackendKotlinFull Stack DevelopmentReact NativeFintechDocker
Senior Full-Stack Developer (Web & Mobile) with 8+ years of experience building scalable, secure, high-performance applications from concept to launch. I specialize in React, Node.js, Python, three.js, React Native and Ionic, with deep domain expertise in Healthcare and a proven track record across EdTech, AdTech, Logistics, Fitness and more.

Web Frontend
React, Next.js, Vue.js, Nuxt, Angular, Svelte, TypeScript, JavaScript, Redux, Zustand, Tailwind CSS, Material UI, three.js, WebGL, D3.js

Backend
Node.js, Express, NestJS, Python (Django, FastAPI, Flask), Rust (Actix, Axum), Go, PHP (Laravel), Java (Spring Boot), C# (.NET), REST, GraphQL, WebSockets, Microservices

Mobile
React Native, Expo, Flutter (Dart), Swift (SwiftUI, UIKit), Kotlin (Jetpack Compose), Ionic, Capacitor, PWA

Databases, Cloud & DevOps
PostgreSQL, MySQL, MongoDB, Redis, Firebase, Supabase, DynamoDB, AWS, Google Cloud, Azure, Docker, Kubernetes, CI/CD (GitHub Actions)

APIs & Integrations
Google Maps & Places API, Stripe, PayPal, Twilio, WebRTC, Zoom SDK, HL7/FHIR, OpenAI & LLM integration, Socket.io, Push Notifications

Industry Experience
- Healthcare: HIPAA-compliant telemedicine apps, EHR/EMR integration (HL7/FHIR), patient portals, appointment scheduling
- EdTech, LMS & E-Learning: course platforms, SCORM/xAPI, live classes, quizzes, progress tracking
- AdTech: campaign dashboards, real-time analytics, ad tracking and reporting
- Fitness & Wellness: workout tracking apps, Apple HealthKit / Google Fit integration, subscriptions
- Carpool, Ride-Sharing & Car Rental: driver/rider matching, live GPS tracking, in-app payments
- Logistics & Delivery: fleet management, route optimization, shipment tracking
- Booking with Google Maps: location-based booking for services, venues and rentals
- FinTech: payment gateways, digital wallets, banking dashboards, secure transactions and KYC
- E-commerce: online stores, Shopify & WooCommerce, cart and checkout, inventory management
- Real Estate: property listings, map-based search, 3D virtual tours (three.js), agent CRM
- SaaS: multi-tenant platforms, subscription billing, admin dashboards, role-based access
- Travel: booking engines, itinerary planners, hotel and flight API integration
- Food Delivery: ordering apps, restaurant dashboards, real-time order and courier tracking
- Company Websites: fast, SEO-optimized corporate sites and landing pages with CMS (WordPress, Strapi, Sanity)

What I Deliver
- End-to-end development: UI/UX, architecture, backend, web and mobile apps, deployment
- Clean, tested, maintainable code built to scale
- Clear communication, on-time delivery and long-term support


Experience

Professional experience5 - 10 years
Freelancer since2018

Languages

EnglishNative speaker

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