I've spent 11 years working with clients of all sizes across a lot of different industries. That breadth means I can adapt quickly to just about any app idea and pick up new domains fast. I know the grind of building out a first MVP and I know how to jump into an existing codebase and find the path of least resistance to get it fixed. Both sides of that equation. What I like most is looking at the long-term picture - planning different stages, thinking through feature releases, watching an app grow. Most of my best client relationships have lasted years because of that. It's good for them and honestly it represents stability for me too. That alignment tends to produce better work. If you're looking for someone to own the mobile side of your product and stick around, send me a message. — Quentin H.

I'm a skilled developer with 10+ years of experience in the software industry, especially within Microsoft, cloud & mobile app solutions. Tell me your needs and I will do my best to help you. Having previously worked with large enterprises as well as many smaller start-ups, I have a broad range of experience and knowledge of the full software delivery lifecycle. Why should you hire me: ✅ I work fast and achieve your goals on time ✅ My total programming experience is 10+ years ✅ 200+ successful projects delivered ✅ Solid logic reasoning and problem-solving skills ✅ Responsiveness and high-quality delivery ✅ Best software development practices using ✅ Highly skilled Full Stack Developer and Mobile Developer team for enterprise solutions I am not interested in "one-hour" or "one-day" jobs. I establish long-lasting relationships with my clients. I always consider a commitment to the result as the first priority. Since 2015, I've been working as CEO at Lvivity - a boutique dev shop that I founded. My team will deliver you the best service, communication, and also reliable, and scalable code that will fulfill your business needs. Here is a list of technologies I have experience with: 🔸 Programming - .NET C# Architect, PM, BA, CEO @ Lvivity.com 🔸 Databases - MSSQL, MySQL, MongoDB, Oracle, Flat files (CSV, XML) 🔸 Source Control - TFS, GIT, SVN 🔸 API's - Google, eBay, Facebook, LinkedIn, Twitter, Amazon 🔸 And much more: ASP.NET MVC / Core2 / WPF / Xamarin / SWIFT, React.Native, Flutter, Azure, AWS So, I guarantee my enthusiasm for work and fulfilling my project with inexpressible efforts.

Welcome to my Upwork profile! I specialize in building high-quality native iOS and Android applications (Swift | Kotlin), as well as cross-platform solutions using React Native, Flutter, and other popular frameworks. My expertise extends to all aspects of mobile app development, including UI/UX design, API integration, performance optimization, testing, and deployment. My top priority is to deliver high quality work that meets my clients' specific needs and requirements. Whether you need a brand new app built from scratch or an existing app revamped and updated, I can provide the expertise and skills needed to get the job done on time and within budget. Some of the services I offer include: Native iOS and Android app development (Swift - 5 years, Kotlin - 5 years, Java - 5 years) Cross-platform app development with React Native, Flutter, etc. (Flutter - 3+ years) Custom UI/UX design and development Integration of third-party APIs and services Performance optimization and app scaling Testing and debugging Deployment to app stores and ongoing maintenance and support. If you're looking for a reliable and experienced mobile developer who can deliver high-quality work on time and on budget, look no further. Let's discuss your project and see how I can help bring your vision to live!

🏆 Top-Rated Full Stack Web & App Developer ⚡ Software Engineer with Amazon Experience 🕗 Working across EST and PST time zones ✔ 11+ Years of Expertise | 100% Client Satisfaction | Full-Time Freelancer Hello, This is Fazeel Tola, who has vast expertise in full-stack development and a background in computer science studies, I am a passionate full-stack web and app developer well-versed in App development, React native, Flutter, React, Node, MongoDB, AWS, and CMS platforms like Wix, webflow, WordPress, Elementor, Shopify, and Squarespace. I have overall 7 years of experience in the development field, My track record includes successfully delivering projects that meet clients' unique requirements, while my efficient project management ensures timely and high-quality outcomes. Why you choose me: - Provides visually appealing and fully functional websites created with pride. - Enhance your online presence through expertly crafted websites. - Top-notch service and seamless collaboration experience guaranteed. - Transform your visions into reality with our collaborative approach. - Elevate your brand and drive your business forward. - Embark on an exciting journey by getting in touch today. Please find my expertise below: ✅ React Native ✅ Flutter ✅ React ✅ Node.JS ✅ Three.JS ✅ VUE.JS ✅ Express.JS ✅ MONGO DB. SQL etc ✅ AWS Server Deployment and Configuration ✅ LARAVEL ✅ PHP ✅ WordPress development ✅ Wix development ✅ Wix Velo ✅ Wix store ✅ Divi theme ✅ Elementor ✅ Woo-Commerce setup ✅ E-commerce ✅ Shopify development ✅ Squarespace development ✅ SEO-optimization ✅ Restful-API integration ✅ Payment methods Integration ✅ HTML 5 ✅ CSS 3 ✅ JavaScript Ready to take your brand to the next level? Let's collaborate and create exceptional designs that captivate your audience. Contact me today, and let's discuss how I can help bring your vision to life! Best Regards, Fazeel Tola.

I am a Senior Mobile & Web App Developer with 10+ years of experience specializing in building high-performance, scalable applications. I have expertise in React Native, Swift, Flutter, GraphQL, Node.js, and AWS and have successfully developed and optimized numerous mobile and web applications for startups and enterprises. 🛠 Tech Stack & Expertise: ✅ Mobile App Development: React Native (Fabric & New Architecture), Flutter, Swift (iOS), Kotlin (Android) ✅ Web Development: React.js, Next.js, Angular, Redux Toolkit, Zustand, TypeScript ✅ Backend: Node.js (Express, Koa), GraphQL (Apollo), Firebase, AWS Lambda, NestJS ✅ Databases: MongoDB, PostgreSQL, MySQL, Firebase Firestore ✅ State Management: Redux, Redux Saga, Zustand, Recoil, MobX ✅ Cloud & DevOps: AWS (S3, Lambda, EC2, DynamoDB), Docker, Vercel, Digital Ocean ✅ Authentication & Security: OAuth, JWT, Single Sign-On (SSO), Firebase Auth, AWS Cognito ✅ Testing & Debugging: Jest, Cypress, React Testing Library, Detox, Reactotron ✅ Performance Optimization: Hermes Engine, React Native Reanimated, Skia, TurboModules ✅ Payment Integrations: Stripe, PayPal, Razorpay, Authorize.net ✅ Third-Party APIs: Twilio (SMS & Video), Google Maps API, OpenAI (ChatGPT & Whisper), WebRTC 🏆 What I Bring to the Table: ✔ Develop and scale features pre & post-release ✔ Fix bugs and optimize app performance for smooth UX ✔ Write clean, maintainable TypeScript code ✔ CI/CD automation & build binaries using App Center, Fastlane ✔ Perform code reviews & submit pull requests ✔ Expertise in migrating projects to React Native’s New Architecture 🚀 Why Hire Me? 📌 Proactive & Transparent: Daily status reports and instant communication 📌 Performance-Oriented: I optimize apps for speed, scalability, and efficiency 📌 Problem-Solver: I love debugging & fixing critical issues 📩 Let’s build something amazing together!

Senior Unity Developer with 5+ years of experience delivering 15+ mobile, WebGL, and XR applications from concept to release. I build clean, well-structured gameplay systems that stay stable as projects grow. I focus on core systems and performance, so new features can be added without breaking what’s already working. WHAT I CAN HELP WITH • Gameplay systems - progression, UI, save/load, input • Multiplayer - Photon (PUN/Fusion), Netcode, matchmaking, session management • Cross-platform builds - iOS, Android, WebGL, Quest, Pico • Performance optimization - profiling & real device tuning (60+ FPS targets) • Custom editor tools - reducing repetitive setup time by ~60% • Backend integrations - Firebase, AWS, Unity Gaming Services WHAT YOU GET • Tested and optimized on target devices • Clean structure, so new features don’t break existing systems • Code that stays manageable as the project grows • Clear communication and realistic estimates • Organized Unity projects that other developers can easily work with SPECIALIZED EXPERIENCE Architecture & Systems Design I structure Unity projects so new features can be added without breaking existing systems. Clean setup from the start means fewer refactors later. Mobile & XR Performance Shipped 10+ VR apps (Quest/Pico) and optimized builds to maintain stable frame rates on target hardware, not just in the editor. Multiplayer & Online Features Integrated multiplayer functionality, authentication flows, and persistent data systems to keep sessions stable and player data reliable. UI & Game Systems Implementation Built scalable UI and gameplay systems that work consistently across different screen sizes, aspect ratios, and platforms. RESULTS • Delivered 15+ applications across mobile, WebGL, and XR • Shipped 10+ VR apps for Quest and Pico • Built real-time tracking and session systems used in production • Created internal tools that reduced content setup time by ~60% • Led core system and UI architecture on cross-functional teams COMMON PROJECT TYPES • “Add multiplayer to my game.” • “Improve performance on mobile/VR.” • “Fix project structure before adding more features.” • “Build core systems properly from the start.” • “Connect Unity to Firebase or other backend services.” • “Build a quick prototype to validate a game idea.” If you need structured Unity development with long-term stability and predictable delivery, feel free to reach out.

I'm an Expert Software developer with 11+ years of experience developing desktop software, websites, and ERPs in ASP.NET, VB.NET, C#, VB6, and ASP.net MVC technologies. During my career, I helped many small, medium, and enterprise organizations to develop ERPs, Software that helps them to make business more productive. Previously I have developed applications like Inventory Management, ERP, CRM, Insurance Management, Client Management Application, POS Applications with Offline & Online, School Management systems, Library Management, Payroll Software, Retail Management, Retail POS systems, Task Management systems, Travel Agent Management Software, Farming ERP, Retail ERP, Lead Management, Insurance Claim Management, Cloud Storage Applications, and many more custom software. * Technical Proficiency: - .Net, including C#, VB.NET, ASP.NET (MVC, Web Forms, and Winforms), Web API 2, LINQ,.Net Windows Forms, WPF. - Anything SQL Server and T-SQL, including writing stored procedures, triggers, functions, jobs, indexes, full-text search, query optimization, database design, setup, backup, import, export, administration, and maintenance. - Other databases like Oracle, MySQL PostgreSQL, SQLite, MS Access - Angular, ReactJS, KnockoutJS, KendoUI, JavaScript, jQuery, Bootstrap, Ajax - CSS, HTML5, Responsive Design - Regular Expressions in general and its implementation in .Net or JavaScript - VBA, VB6 - Crystal Reports, Active Reports - Source controls, git, GitHub, BitBucket, TFS, SVN (Subversion), Source Safe - Third-party Controls: DevExpress, Rad Controls, DotnetBar Controls & Metro Framework Experience in various payment gateway integrations like Stripe, Stripe SCA, Authorize.Net, PP, and First Data. I have experience in repositories like GitHub and BitBucket. As a Project management tool, I have used Jira, Asana, and Basecamp. Further, I have experience working with TFS & VSS. Thank you for taking the time to review my profile

✅Top Rated Plus ✅10+ Years of Experience ✅100% Job success score I am Sagarkumar , a Senior Mobile and Web App Developer with 10+ years of experience in Mobile and Web application Development I have worked with big brands, startups and individuals to create mobile apps for their requirements. I have worked on more than 200+ projects successfully. Many of my developed apps featured in app-store and play-store I have worked with clients from all over the world , such as the USA, UK, Germany, India, and Australia, which has given me a strong understanding of different international markets. I have worked with different Industries including Travel and Tourism, train ticket booking, transport, educational, hospitality, health & wellness, real estate, live streaming, Marketplace, food & delivery, human resources, fitness, financial & banking sectors, e-commerce, dating, sports, Betting, music/audio, and automotive. I specialized in these high-quality Mobile App Design and Development areas: - Android app development - Kotlin, Java, Android SDK, Android Studio - iPhone app development - Swift, SwiftUI, Objective C, iOS SDK, Xcode - Backend Development | Node.js - Cross Platform Mobile App Development using Flutter, Dart - UI/UX: Mobile design - Mobile & Web app design - UX/UI design Web applications: Backend Technologies: Node.js, Nest.js, TypeScript, JavaScript, Express.js, AWS, MongoDB Frontend Technologies: React, Flutter, HTML, CSS Database Management: MySQL, PostgreSQL, JSON, Database Schema Design Architectural Patterns: MVC, Event-Driven Architecture, Serverless Architecture, Clean Architecture, GraphQL Web Services & APIs: RESTful API development, Firebase Cloud Messaging, In-App Purchase Integration Code Optimization: Performance tuning, Design patterns, Material Design, Custom UI Elements, Animation Cloud Services: Firebase Analytics, Database, Storage, Hosting, Crash Reporting, AWS, DigitalOcean Social Integrations: Facebook, Twitter, Google SDK Skills : - Have experience developing, releasing & maintaining applications as a Mobile app developer - Strong skills in executing pixel & animation perfect UI's relative to good app performance - Have great communication skills and ability to work with your team - Have a great understanding of MVC, MVP, MVVM and take great care to ensure each project is well-architecture with best practices and easily maintainable so it can be enhanced as feature grows. - The ability to take initiative and work independently with very little supervision - Application requirement analysis - Translating requirements to technical languages In addition to Mobile app development services, my topic areas of expertise include: - Mobile Application Architect - Native Mobile Application Development consultation - Mobile Application UI/UX design using Figma, Adobe XD - Mobile Application backend services Firebase, AWS Mobile Hub - Mobile Application backend development: Node, Express, TypeScript, JavaScript, MongoDB, MySQL, PHP, RESTful API development, Google App Engine - Website development, Web Scraping, Web Admin Panel, CMS Development - Chatbot development, Facebook Messenger Additional: -Alamofire, SDWebImage, Cocoapods, SQLite, Core Data, Project Management tools: - Jira, Asana, Trello, Clickup If you still think this is right for you, contact me. Thank you in advance for your time and consideration. P.S. - When you work with me your satisfaction is 100% guaranteed. - Every person who ever worked with me got results. EVER! - Even if you don’t hire me now, keep my profile link in case you need a Mobile App Developer later. FAQ Can you provide maintenance support after development? Yes, I provide free of cost maintenance support for 3 months after mobile app development. Can you help with Design? Yes, I offer a UX design as an additional service. Can you help with the landing page website for my mobile app product? • ⁃ Yes, I can help to build the landing page for a mobile app product.

⭐ 10+ years of experience (Swift | Objective-C | SwiftUI) ⭐ Developed app using SwiftUI and Combine framework ⭐ Developed Finance app, Fitness app, Social media apps, Utility apps, E-commerce, Music app, etc. ⭐ Following MVVM, MVC coding pattern, ⭐ Maintaining code using Git, PRs, able to fix conflicts, etc. ⭐ Comfortable using Jira, Trello, Asana, Linear, etc. for task management I can help you to develop High-Quality app for your business. My Expertise: - Migrate Projects -- Convert UIKit project to latest SwiftUI project -- Convert Objective-C project to latest Swift project -- Convert old Swift project to latest Swift Project - Maintain old Objective-C project and add more features over the time - Native iOS - REST APIs Development using Python - Server-less Apps using AWS or Firebase SDKs - Version control using Git, Bitbucket, and GitLab - Task management using Jira, Trello, Asana, GitLab - Extensive knowledge in object-oriented software development, MVC, MVVM, VIPER architecture, multithreading, networking, and memory management. - Universal Links and Deep Link Integration - AI API Integration: ChatGPT API usage as per the client requirements MY CLIENTS SAY: ⭐⭐⭐⭐⭐ "Dhaval understood exactly what I wanted and exceeded my expectations. Very friendly and great communication. He is highly knowledgeable in his field and goes out of his way to explain to customers the technical process of things. He is simply the best developer, and app quality is superb. Highly recommended. A++" ⭐⭐⭐⭐⭐ "Dhaval is a great developer, and he did everything i want excellently. He was always available and open to communication while we were working. I strongly suggest everyone work with him." ⭐⭐⭐⭐⭐ "Thanks Dhaval, much appreciated." I am following MVC or MVVM coding patterns throughout the application. Using best practices to fire REST/SOAP API calls, parse JWT and maintain proper session using it. Store data into data models, properly handle each case of payment(In-App Purchase or 3rd Party SDK like Stripe, Pay_pal), and maintain consistency between app and server. As a full-stack Mobile application developer, I can develop APIs using the python language, and it will be hosted on Google Cloud Functions, and I can consume the REST APIs in the mobile application. I have developed the following types of Application: ♔ Finance App ♔ Health App, which connect with Apple health, Manual health data entry, readings from health devices, etc. ♔ Cruise App which accessible only on Cruise ♔ Utility Apps like NFC, Barcode, or QRCode Read/Write ♔ Social media apps like Create Post, location-based users/post listing, making connections, In-App Purchase for a premium feature ♔ Chatting apps using Firebase Realtime or Firestore database, Signal-R, Socket ♔ Server-less apps using Firebase or AWS ♔ E-Commerce apps with location-based or filtered product listing, cart management, payment gateway integration like Pay_pal SDK, Stripe SDK For App Security, I am using the following things: ♔ JWT Token management ♔ Encode password or required data using AES256 or required Algorithm ♔ Store data sensitive data into Key Chain/ User Defaults To Store/Maintain Data throughout the App Life Cycle, I am using the following: ♔ Data Models - Store and maintain data into Data Models, Arrays, Dictionaries, etc. as per the requirement of the functionality ♔ CoreData - Store/Retrieve data ♔ SQLite - Store/Retrieve data To Develop a Server-less App, I am mainly using either Firebase or AWS Services like below: ♜ Google Firebase: ♘ Authentication - For user management like Signup, login, forgot password, etc. ♘ Realtime Database / Cloud Firestore - For storing custom data in non-relational tree and document database structure, respectively. ♘ Cloud Functions - For hosting functions that can be trigger based on events or create REST APIs ♘ Cloud Messaging - For sending push notifications ♘ Crashlytics - To teach the crashes and solve it quickly ♘ AdMob - To integrate Google Ads ♜ AWS: ♘ Cognito - For user management like Signup, login, forgot password, etc. ♘ DynamoDB - For custom data storing in non-relational Document Database structure ♘ S3 Bucket - For storing files like images, video, etc. ♘ SNS - For sending push notifications ♘ Cloud Watch - For maintaining logs and trigger events ♘ Lambda - For writing functions that can be trigger based on a particular event I am managing my Source Code using the below Version Control systems: ♔ Git ♔ BitBucket Other Technical Expertise And Area Of Domain Field IOS | Android | Native App Development | UIKIT | SwiftUI | IAP | Subscription | App Improvements | Memory Management | Take Over Existing APP | Music App | E-commerce App | Social Media App

I specialize in native mobile application development (> 10 years), bringing extensive experience in Java EE (> 6 years) and a diverse range of mobile and server-side technologies. I am passionate about delivering high-quality, efficient, robust mobile solutions tailored to meet client needs. Whether developing sophisticated mobile apps, integrating complex server-side components, or crafting engaging games, I bring a comprehensive skill set and a commitment to excellence to every project. iOS: - Languages: Swift, Objective-C, C, C++ - UI: UIKit, SwiftUI - Libraries: Core/Foundation, AVFoundation, MapKit, WebKit, Alamofire, SwiftLint Android: - Languages: Java, Kotlin, C, C++, JNI - UI: Android View, Jetpack Compose - Libraries: Dagger 2, Room, Lottie, OkHttp, Retrofit, Glide, LeakCanary, Timber, StrictMode Cross-platform: - React-native, Flutter, Qt - Frameworks: Firebase, GStreamer SDK, FFmpeg, OpenGL, OpenAL - Libraries: libusb, libssl, libcrypt, libzip Tools: - Docker - Sonarqube - CI/CD