Hi Thank you for visiting my profile. I have been developing iOS/Android Apps for over 6 years in great Mobile Company in Ukraine. Main focused on the Tinder like Dating apps, WhatsApp like Chatting apps, Video conference Apps and web-based mobile applications with XMPP, Openfire, OpenTOK, PubNub, Quickblox, WebRTC, RTMP/RTSP/HLS, Restful Web services, MapKit, JSON data encoding/decoding and web backend apis. My main skills: - Media Streaming: Wowza, SoundCloud, HLS, RTMP, FFMpeg, H.264, H.323, VP8, MPEG-4, Speex, G.723, G.729, gstreamer, vlc, JWPlayer, ExoPlayer - Social Network: Facebook, Twitter, LinkedIn, Instagram, Youtube, Pinterest, Vimeo, Google+ - Chat & Messaging Engine: XMPP, Jabber, Openfire, OpenTok, WebRTC, Quickblox, Jabber, Ejabberd - Video Conference: VOIP, SIP, Asterisk, FreePBX, VicDial, OpenSIPS, Kamailio, Freeswitch - Video/audio/image processing: OpenCV, GPU Image, CoreAudio, EZAudio, Pitch Control, Bass, AVFoundation - Web Service: XML/JSON, REST/SOAP - Cloud backend: Parse.com, Parse SDK, Parse REST, Parse Cloud Code, Amazon S3 EC2 AWS, Firebase, Twillio - Place Service: Google Map, Foursquare, Yelp, Geolocation, GPS - Cloud services: iCloud, Rackspace, Azure, AWS, EC2, Dropbox - Back-end: RESTful API, Parse.com, Amazon Web Service & Amazon S3, GAE, XML, JSON - Source control: Mantis, BaseCamp, Huddle, Git, Github, Bitbucket I am always looking forward to long-term relationship based on client satisfaction!

I am a 🏆🏆TOP RATED PLUS MOBILE APP DEVELOPER 🏆🏆and provide cutting-edge mobile application development solutions for your business. I've built hybrid and native applications using React Native, Flutter, Android, Ionic, Android studio, Android SDK, JAVA frameworks, Angular, React, Node.js, etc. I have a proven track record with almost 100% Job Success and deployed applications on the app store and play store. 💪 Below are my technical skills: ⭐️ Android Mobile App Development: Android SDK, Android NDK, ANSI, JAVA, SQLite, MySQL, SQL Server, PostgreSQL, Oracle, MS Access, Android studio, Eclipse, HTML, XML, Android Debugger, SQLite, Activity, Intent, Broadcast Receiver, Content Provider, UI components & controls, Action Bars, Widgets, Fragments, API, Web Service Integration (SOAP, REST, API, XML, JSON), Multi-threading / Scheduling / IPC / Memory Management, GCM (Google Cloud Messaging), FCM (Firebase Cloud Messaging), Google ARkit and Google Map. ⭐️ IOS Mobile App Development: iPhone app development, iPad, iPhone application Support, iPad, Objective c, ios development, Swift IOS/iPhone development, X Code ⭐️ Hybrid Mobile App development: React Native, Flutter, Phonegap, Ionic4, Ionic, Cordova, ⭐️ API Integration: Payment Gateway API's (Stripe, Paypal, Braintree), Universal image loader, httpOK, Rest APIs, Google Map Integrations, Google Locations, Google Analytics, Volley, JSON APIs, etc. 🌐INDUSTRIES I WORKED FOR: • Social Networking Apps • Blockchain ICO & dAPP • Crypto Gaming • Taxi Apps • Fleet Management • E-Learning Apps, LMS, EdTech • Real Estate Apps • Smart City Apps • Chat & Dating Apps • Shopping Apps • Health & Fitness Apps • Food & Drink Apps • Photo Editing & Sharing Apps • Travel & Booking Apps • Music & Video Player Apps • Quiz & Poker Games 💡 Offered Services : - Enterprise Solutions - Website Development & Design - Mobile App Development - Web Application Development - Blockchain Development - UI/UX - Content Management System (CMS) - E-Commerce Development/E-commerce Solutions - Cloud Solutions (AWS & Azure) I am sure my experience will be beneficial in working on complex projects. Let's Talk

Are you looking for a developer who doesn't just write code, but builds products that scale? With extensive experience in React, Next.js, and React Native, I help businesses transform complex logic into seamless, user-centric digital experiences. having Rich experience in developing applications with complex business logic and always adhere to adding business value to the product with user centric approach. developed user engaging applications with state of the art cutting edge technologies including Reactjs, React Native, Nextjs and TypeScript. Here is the list of technologies I use: Languages: JavaScript, TypeScript, HTML, CSS Client/Frontend Side: ReactJS, ReactNative, NextJs Bootstrap, Tailwind, Material, Redux, SCSS API Integration: Social Login, Stripe, In-App Purchase, Google maps, Firebase, PubNub Project Management/Workflow: Github, GitLab, Slack, Trello, ClickUp I find myself a responsible, self-motivated, solution-driven developer and always meet clients expectations in terms of code quality and turnaround.

Welcome to my profile. I'm an experienced and professional mobile and software developer doing freelance, working remotely (telecommute) and looking for great projects to work on. Summary of Qualifications • Expert understanding of core mobile technologies standards • Development of software, mobile web apps and hybrid mobile apps (PhoneGap) • Solid understanding of how the android OS works for the best performance • Passionate about all aspects of development • Modern tooling and workflow • Ability to write high-performance, maintainable and reusable code • Appreciation for quality, usability, user experience (UX), accessibility and compatibility • 1.5+ years of experience • Highly motivated, self-starter, fast learner, hard worker, organized, attentive to details and a team player • Good communication skills. Fluent in English , both written and verbal • Sense of aesthetic and design • Always up-to-date with the latest technologies, techniques, optimizations and best practices My expertise is -Native Mobile App iOS/Android Mobile Apps(Social Networking Mobile App, Chat & Communication Base Mobile App, Geolocation & Phone Tracking Mobile App and E-Commerce & Business App, Payment Mobile Apps.) -Hybrid Mobile App Ionic, Meteor.js, Sench Touch, Framework7 -Web App MEAN application stack (MongoDB, Expressjs, Angularjs and Node.js). Backbone.js, Ext.js, DHTMLX -Web Service PHP, Javascript, Node.js based RESTful Webservice, Real-time communication providing Server Development. Thank you very much.

With 4+ years of experience in full-stack development, I specialize in building scalable, high-performance web applications using Django, FastAPI, Next.js, NestJS, Node.js, and Docker. Whether you need secure, optimized APIs, real-time messaging solutions, or AI-driven automation, I can help bring your vision to life. 💡 What I Offer 🏗 Backend Expert: Django, FastAPI, Node.js, NestJS, Express.js, TypeORM 🎨 Frontend Mastery: React, Next.js, JavaScript, TypeScript, 🛠 DevOps & Cloud: Docker, Kubernetes, CI/CD, AWS, DigitalOcean 📊 Databases: PostgreSQL, MongoDB, Oracle, MySQL, RDS 🤖 AI, Automation & Real-Time Communication 🚀 AI & Bot Development: AI-driven chatbots, workflow automation 💬 Real-Time Communication: PubNub, WebSockets, Twilio 📱 Messaging APIs: WhatsApp API, Meta API, Twilio SMS 🧠 Agentic AI: AI-powered assistants, autonomous agents I focus on efficiency, security, and seamless user experience to ensure your project is scalable, maintainable, and high-performing. Let’s build something great together! 🚀

Senior Full Stack Engineer | Vue/Nuxt 3 • React • React Native • NodeJS • Python/FastAPI • GCP I'm a Senior Full Stack Engineer currently building and scaling a high-traffic e-commerce platform serving customers across Pakistan and beyond. I work across the entire stack — from Nuxt 3 storefronts and React Native mobile apps to NodeJS backend services, GCP infrastructure, and CI/CD automation. I'm not just a "coder who can do anything." I'm an engineer who ships production systems that real businesses depend on every day — code that's tested, observable, and built to survive growth, traffic spikes, and the messy reality of running a real product. What I bring to your project: 🔹 Frontend at Scale — Vue 3, Nuxt 3, React, NextJS, React Native. SSR, SEO, Core Web Vitals tuning, image optimization, and conversion-focused UI work. 🔹 Backend Services — NodeJS, ExpressJS, REST APIs, Redis caching, queue workers, PHP for legacy integration and migrations. 🔹 Cloud & DevOps — Google Cloud Platform (Cloud Run, Cloud Deploy), AWS (EC2, S3), Docker, Terraform / Infrastructure-as-Code, secrets management, staging/prod environments done right. 🔹 CI/CD & Quality — GitHub Actions pipelines with lint, typecheck, unit + integration tests, coverage gates, and automated rollouts. Bugs get caught in CI, not by users. 🔹 Real-Time Features — Live chat, notifications, presence, and dynamic UIs with PubNub and Socket IO. 🔹 Mobile — React Native cross-platform apps (iOS + Android) sharing infrastructure with the web stack — fewer bugs, faster shipping. 🔹 Databases & Caching — PostgreSQL, MySQL, Redis. Schema design, query optimization, indexing, and caching strategy for read-heavy workloads. Real-world experience that matters: ✅ Production e-commerce experience — high traffic, real revenue, real users. I've debugged checkout flows at 2 AM and shipped fixes the same hour. ✅ End-to-end ownership — I take services from design → build → deploy → monitor → iterate. No throwing code over the wall. ✅ Deep CI/CD discipline — lint, typecheck, tests, coverage, and IaC validation all run before anything ships. Velocity without chaos. ✅ Principal-level code reviewer — I write code my teammates can read a year later, and I review others' code with the same standard. ✅ Cross-team collaboration — comfortable working with product managers, designers, QA, and DevOps. I translate technical tradeoffs into language non-engineers can act on. Project types I excel at: Custom e-commerce platforms and marketplaces (Shopify alternatives, B2B portals, multi-vendor systems) SaaS products — dashboards, admin panels, billing integration Real-time apps — chat, notifications, live dashboards Mobile apps (React Native) tied to existing web backends Legacy modernization — migrating PHP / jQuery codebases to modern Vue / React stacks Performance audits, refactors, and infrastructure cleanups CI/CD setup and DevOps modernization on GCP or AWS How I work: Clear communication first — I ask the right questions upfront so you don't pay for misunderstandings later Realistic estimates — I'd rather under-promise and over-deliver than win the bid and disappoint Honest tradeoffs — if something's a bad idea, I'll tell you why and suggest a better path Documentation included — code, setup, and deploy steps written for the next person, not just me Time-zone flexible — comfortable working with US, UK, EU, and APAC clients with reliable overlap hours Why clients hire me: 🎯 I think like an owner, not a contractor — your project gets the same care I give my own systems 🎯 You get a senior engineer who can also mentor your juniors, not just push tickets 🎯 Outcome-driven: the goal isn't shipping code — it's shipping the right code 🎯 No ghosting, no surprises, no half-finished work Let's talk. If you're building an e-commerce platform, a SaaS product, a mobile app, or modernizing an aging stack — send me a message with what you're working on. I'll come back with a clear plan, an honest estimate, and a few smart questions to make sure we're aligned before we start. Looking forward to building something great with you.

Mayur is an entrepreneur, Product guy, Blockchain Evangelist, and a firm believer that decentralization and peer-to-peer governance systems can help define a new path for the progress of humanity. I have been into research & development since 2015. It is my passion to explore new things and grab opportunities where found. Since 2015 I have been into product design and Engineering leveraging Blockchain, Data Science and IoT Technologies for startups and Enterprise across 20 countries. I and My team have recently worked on the following projects: 1: XMPP Based Chat Application design and development 2: IoT Product Development leveraging Golang as the Backend Technology 3: Push Notification Microservice Development leveraging PubNub and Golang 4: News Feed Design and Engineering leveraging Cassandra and Golang 5: Stock Exchange POC leveraging Golang, Rocks DB and MariaDB If you believe your idea is the next game-changer and need a team member then hire me.

I specialize in optimizing last-mile operations with over two years of hands-on experience in fast-paced fulfillment environments. My tenure as an Operations Team Lead has equipped me with a deep understanding of capacity planning and operational execution, particularly for high-value product categories. I have a strong background in operational analytics, where I successfully streamline processes and drive resource optimization by monitoring workflows of approximately 1,500 daily operations to serve customers within ~500km radius. My proactive approach allows me to identify gaps and implement solutions that enhance supply chain efficiency and customer satisfaction. If you are looking for a detail-oriented professional who can elevate your operations and foster growth, let’s connect to discuss how I can contribute to your success.

Here are a few bio variations for the short "Bio" / tagline field on Upwork (the one that sits under your name, usually 150 characters or so). I'll give you a few options at different lengths so you can pick what fits. Short Bio Options (Under 150 chars — for the tagline field) Option 1 — Stack-focused: Full-Stack Engineer | 4+ yrs shipping React Native & Next.js apps to App Store, Play Store & production. AI, Firebase, AWS. Option 2 — Outcome-focused: I ship production apps — not prototypes. React Native, Next.js, Node.js, and AI integrations. 4+ years, multiple live apps. Option 3 — Confident & direct: Full-Stack Dev with shipped App Store apps. React Native + Next.js + AI (GPT-4, Whisper). I build it, deploy it, and maintain it. Option 4 — Niche-leaning (AI angle): React Native & Next.js engineer specializing in AI-powered apps. GPT-4, Whisper, n8n automation. Live on App Store & Play Store. Medium Bio (300–500 chars — for "About Me" style sections) Full-Stack Software Engineer with 4+ years building production-ready apps across mobile and web. I work in React Native, Next.js, and Node.js, with hands-on experience integrating AI (GPT-4, Whisper) and deploying to AWS. My work is live on the App Store and Play Store — including MWI AI and Quality Boat Salvage. I take full ownership: design to deployment to maintenance. Long Bio (for LinkedIn "About" section or Upwork "Specialized Profile" intro) I'm a Full-Stack Software Engineer based in Karachi, Pakistan, with 4+ years of experience shipping production apps that real users rely on every day. My focus is on the intersection of mobile, web, and AI — I build React Native apps that ship to the App Store and Play Store, Next.js web platforms optimized for performance and SEO, and AI-powered features using GPT-4 and Whisper that solve real workflow problems. Recent shipped work includes MWI AI (an AI documentation platform for marine engineers, live on the App Store), Quality Boat Salvage (real-time maritime logistics on iOS, Android, and web), and a custom Zendesk chat widget that cut customer response times by 40%. I also handle the parts most developers avoid: AWS EC2 deployments, PM2 process management, App Store submissions, and n8n automation pipelines that connect everything together. Open to freelance projects, contract work, and remote full-time roles. If you have something to build, send me a message — happy to scope it out.

I develop high-performance Android applications, leveraging a decade of experience in both large-scale and niche projects. My expertise includes improving existing apps through bug fixes, performance enhancements, and user experience audits. I've collaborated with prominent brands and startups, creating robust mobile solutions from scratch and employing modern stacks like Kotlin and Compose Multiplatform. My unique background in both iOS and Android development offers me a comprehensive perspective on mobile challenges. Whether you need a fresh app or enhancements to an existing one, I ensure your vision is transformed into a seamless, maintainable product. Let’s connect to discuss how I can help elevate your mobile initiatives.