🏆 Top Rated Upwork Freelancer | Full-Stack Developer | .NET MAUI & Xamarin Migration Specialist
I help businesses build powerful, scalable, and user-friendly mobile and web applications with a strong focus on performance, clean architecture, and long-term maintainability.
With hands-on experience in cross-platform development, backend systems, and quality assurance, I deliver complete solutions that are stable, modern, and ready for real-world users.
🚀 My Core Expertise
📱 Cross-Platform Mobile Development
* .NET MAUI
* Xamarin.Forms
* Flutter
I create smooth, responsive, and high-performance mobile applications for Android and iOS with native-like user experiences.
🔄 Xamarin to .NET MAUI Migration Expert
Successfully migrated 27+ Xamarin applications to .NET MAUI, helping clients modernize their apps, improve performance, and ensure future scalability with Microsoft’s latest technologies.
🖥️ Backend Development
* ASP.NET Core
* REST API Development
* Python Django
* Authentication & Secure APIs
* Database Integration
I build secure and scalable backend systems that support enterprise-level mobile and web applications.
🎨 Frontend & Web Development
* HTML5
* CSS3
* JavaScript
* Bootstrap
* Vue.js
From responsive business websites to dynamic web platforms, I create clean and modern interfaces optimized for speed and usability.
🧪 QA Testing & App Stability
Quality is always a priority. I perform:
* Manual Testing
* Functional Testing
* UI/UX Testing
* Bug Reporting & Tracking
* Release Validation
I ensure applications are polished, stable, and production-ready before deployment.
✅ Why Clients Choose Me
* Top Rated Upwork Freelancer
* 100% Job Success Score
* Strong Communication & Fast Response
* Clean, Maintainable Code
* On-Time Delivery
* Long-Term Client Support
⭐ I focus on building reliable applications that not only work well today but are also easy to scale and maintain in the future.
Whether you need:
* A new mobile app
* Xamarin to MAUI migration
* Full-stack web development
* API integration
* App maintenance & bug fixing
* QA testing support
I’m here to help turn your idea into a successful product.
Let’s build something great together!
XAML
Xamarin
.NET Framework
SQLite
Azure DevOps
JSON
LINQ
Android App Development
Google Maps API
Jira
iOS
Flutter
Mobile App Development
Code Review
Infovisa MAUI
MOHAMMADSUHEL B.
Surat, India
$15/hr
4.7
97 jobs
🏆 Top Rated .NET MAUI & Xamarin / Flutter Mobile Application Developer
📈 $50K+ Earnings | 🎯 100% Job Success | 🕒 2500+ Hours | ✅ 85+ Projects Completed
Delivering high-quality Android & iOS apps.
.NET MAUI Developer | Xamarin.Forms Developer | Flutter Developer | Cross Platform App Developer | Mobile App Development Expert | Android & iOS App Developer | .NET MAUI Migration Expert
Certified Mobile App Developer with 7+ years of experience and 85+ successful projects — developing cross-platform mobile applications using .NET MAUI, Xamarin.Forms, and Flutter that deliver performance, scalability, and seamless user experiences.
My name is 𝙈𝙤𝙝𝙖𝙢𝙢𝙖𝙙 𝙎𝙪𝙝𝙚𝙡, a Full Stack Mobile App Developer specializing in .NET MAUI, Xamarin.Forms, and Flutter. I build high-quality, modern, and user-friendly mobile applications that are responsive, fast, and business-driven — designed to run flawlessly on Android, iOS, Windows, and macOS. Whether you need a new mobile app, a migration from Xamarin.Forms to .NET MAUI, or a Flutter-based solution, I ensure your app is future-ready and performance-optimized.
Completed 30+ Xamarin.Forms → .NET MAUI migration projects, including large-scale, feature-rich, and mission-critical applications.
𝙈𝙤𝙗𝙞𝙡𝙚 𝘼𝙥𝙥 𝘿𝙚𝙫𝙚𝙡𝙤𝙥𝙢𝙚𝙣𝙩 𝙎𝙚𝙧𝙫𝙞𝙘𝙚𝙨 𝙄 𝙊𝙛𝙛𝙚𝙧
.NET MAUI Cross-Platform App Development
Xamarin.Forms Mobile App Development
Flutter App Development (Android, iOS, macOS, Windows)
Xamarin.Forms → .NET MAUI Migration & Upgrade
Custom UI/UX (Figma → XAML / Flutter Widgets)
Firebase, REST API, and Azure Integration
App Store & Play Store Submission
Mobile App Redesign & Performance Optimization
App Maintenance, Debugging & Version Upgrades
𝙈𝙮 𝙎𝙠𝙞𝙡𝙡𝙨 & 𝙀𝙭𝙥𝙚𝙧𝙩𝙞𝙨𝙚
▪ .NET MAUI App Developer
▪ Xamarin.Forms App Developer
▪ Flutter App Developer
▪ Xamarin.Forms to .NET MAUI Migration Expert
▪ Cross Platform App Development (Android, iOS, Windows, macOS)
▪ Firebase & REST API Integration
▪ App Store & Play Store Publishing
▪ MVVM Architecture & Shell Navigation
▪ Offline Support & Push Notifications
▪ In-App Purchases & Subscription Management
▪ C#, XAML, Dart, Kotlin, Swift
▪ Git, Azure DevOps, GitHub, Bitbucket
▪ Clean Code & Performance Optimization
▪ Blazor Hybrid with .NET MAUI
✅ 𝙒𝙝𝙮 𝘾𝙝𝙤𝙤𝙨𝙚 𝙈𝙚 𝘼𝙨 𝙔𝙤𝙪𝙧 𝙈𝙤𝙗𝙞𝙡𝙚 𝘼𝙥𝙥 𝘿𝙚𝙫𝙚𝙡𝙤𝙥𝙚𝙧
✔️ 7+ years of hands-on experience in Mobile App Development
✔️ Expert in .NET MAUI, Xamarin.Forms, and Flutter
✔️ 85+ successful projects completed across global industries
✔️ Specialized in Cross Platform App Development
✔️ Proven Xamarin.Forms → .NET MAUI Migration Expert
✔️ Clean, scalable, and maintainable codebase
✔️ Expertise in App Store / Play Store Deployment
✔️ Reliable long-term support and communication
🚀 𝙇𝙚𝙩’𝙨 𝘽𝙪𝙞𝙡𝙙 𝙔𝙤𝙪𝙧 𝘼𝙥𝙥 𝙏𝙤𝙜𝙚𝙩𝙝𝙚𝙧
When you hire me as your Mobile App Developer, you get:
✔️ High-performance, responsive mobile applications
✔️ Cross-platform apps using .NET MAUI, Xamarin.Forms & Flutter
✔️ SEO-optimized listings and store compliance
✔️ Ongoing updates, maintenance, and optimization
✔️ Dedicated support and post-launch assistance
I’m passionate about crafting user-focused mobile applications that combine modern design, optimized performance, and solid architecture. Whether you need a .NET MAUI app, a Flutter app, or a migration from Xamarin.Forms, I’ll deliver an app that drives results and growth.
📩 Let’s discuss your mobile app project today and bring your vision to life!
🔍 𝙆𝙚𝙮𝙬𝙤𝙧𝙙𝙨
.NET MAUI Developer, Xamarin.Forms Developer, Flutter Developer, Mobile App Developer, Cross Platform App Developer, .NET MAUI App Developer, Xamarin.Forms App Developer, Flutter App Developer, Xamarin.Forms to .NET MAUI Migration Expert, MAUI Developer, Xamarin Developer, .NET MAUI Expert, Flutter App Expert, Mobile App Development, Xamarin.Forms to .NET MAUI Upgrade, Cross Platform Mobile App Development, .NET MAUI Xamarin Flutter Developer, Android App Developer, iOS App Developer, .NET MAUI 9 Developer, Xamarin.Forms Migration, .NET MAUI Mobile App Developer, Flutter Mobile App Developer, Xamarin.Forms Mobile App Developer, Xamarin.Forms to MAUI Migration Specialist, Cross Platform Mobile Developer, .NET MAUI Mobile Developer, Flutter Cross Platform App Developer, Xamarin.Forms Mobile Developer, .NET MAUI App Engineer, Xamarin.Forms Specialist, Flutter App Engineer, MAUI Mobile Developer, .NET MAUI Xamarin.Forms Flutter App Developer, Xamarin.Forms to MAUI Migration Expert, Flutter Cross Platform App Expert, MAUI Xamarin.Forms Developer, .NET MAUI Cross Platform App Developer, Flutter Application Developer, Xamarin.Forms App Specialist, .NET MAUI App Builder, Flutter App Builder, Xamarin.Forms App Engineer, Cross Platform MAUI Developer, Xamarin.Forms Flutter MAUI Developer.
XAML
Xamarin
Mobile App Development
Mobile App
Mobile App Improvement
Infovisa MAUI
Mobile App Strategy
Android
iOS
C#
Model View ViewModel
API Integration
Flutter
FlutterFlow
iOS Development
Nilesh A.
Navsari, India
$40/hr
4.1
76 jobs
👨⚖️ Senior .NET Developer & AI Integration Specialist with 15+ years of experience building scalable web, mobile, and desktop applications.
Core Skills:
• AI Integration Expert.
• AI & LLM Solutions
• Penetration Testing (Web, Mobile & API Security)
• Vulnerability Assessment & Security Auditing
• Application Security Testing & Risk Analysis
• Python, Data Science, LangChain, NLP
• Generative AI.
• .Net MAUI, Xamarin Forms
• C#, .NET, ASP.NET, WebForms, Blazor
• React, Next.js
• SQL Server, SSRS
• WPF, WinForms
• PHP (maintenance & legacy support)
🎖 DOMAIN EXPERTISE
✔️ IRS Integration
✔️ POS
✔️ Banking
✔️ Travel
✔️ E-Commerce
✔️ Restaurant
✔️ Healthcare
✔️ Finance
✔️ Insurance
✔️ Educations
Senior full stack developer extensive hands-on experience developing large scale, mission-critical end-to-end solutions including real-time and complex GUI systems.
💻TECHNICAL EXPERTISE
✔️ More than 15 years of experience in Travel Domain(Hotel, Flight, Tour, Visa, Package, Transfer) Booking website development.
✔️Development Technology : ASP.Net Webforms | SSRS(RDLC Reports) |ASP.NET MVC C#, VB |WEB | ERP & API Integration Specialist
✔️ Expert in third party Hotel API integration like TBO, Hotelbeds, Expedia, Dotw, Agoda, etc
✔️ Expert in third party Flight API integration like FR24, travelport, pkfair, mistify, fairlogics, bebilon, gelelio, flymm domestic myanmar, amedius, etc.
✔️ Microsoft (.Net Core | SignalR | Azure | SQL Server | 365 Identity Authentication (B2C/B2B))
✔️ MAUI
✔️ NopCommerce
✔️ WordPress
✔️ PowerShell Script Expert
✔️ JavaScript Frameworks - Typescript (Angular | React | Node | Knockout | Vue | Next)
✔️ Source Controls (Git | TFS | Tortoise SVN/SG)
✔️ Database (SQL Server | MongoDB | Elastic Search | Amazon Dynamo | MS Document DB)
✔️ Payment Gateway (PayPal | Stripe | FastSpring | Payfort | Authorize .Net | CCAvenue | VIPPS | YourPay | Betalingservice | Alipay | PayU)
✔️Third-Party Integration: (Sendgrid | Twilio | Google APIs | RESTFull APIs | Ali Cloud SMS | Tencent SMS | MailGun | ShipStation | MSG91)
✔️ OAuth (Google | Office365 | Facebook | LinkedIn)
API(REST) | Entity Framework | .Net Core | Angular | KnockoutJS | javascript | jQuery | MERN Stack | Next.js | PHP WordPress | Laravel | Code ignitor.
✔️Mobile Technology : React Native | Flutter | Native Development | Java | Kotlin | iOS | Swift | Objective - C.
✔️Cloud : AWS Cloud Front. S3 Bucket | EC2 | CodePipeline | Beanstalk | Amplify | Azure DevOps
✔️Deployment : CI/CD Pipeline Jenkins | Docker
✔️Azure : Azure AD B2C | Azure Active Directory | Azure SQL Database.
✔️Django, GitLab CI/CD, Django Rest Framework, Celery, Redis, PostgreSQL, Docker, Django-OTP, AWS, Heroku
✔️React, Next.js, Supabase/PostgreSQL, API integrations, subscription/payment management
⚙️ Work Flow
Discuss on idea + Analise + Evaluate + Execution + Testing + Delivery = Success
🕒 Availability & 📧 Communication
I always prefer a quick short call to project discussion or idea-sharing. It saves prospects precious time & energy. I can start work on the project IMMEDIATELY and work more than 8 to 9 hours/day and 45-50 hours/week.
💬 MESSAGE or INVITE me to build your best product. Always available to help to grow your business.
ASP.NET
ASP.NET MVC
.NET Core
Microsoft SQL Server
SQL Server Reporting Services
nopCommerce
jQuery
Angular
MERN Stack
Next.js
Tailwind CSS
PHP
Laravel
Payment Gateway Integration
Mobile App Development
iOS Development
Google Maps API
Azure DevOps
CI/CD
Amazon S3
vishal W.
Noida, India
$20/hr
4.9
35 jobs
I help startups, SaaS companies, and businesses build scalable web, mobile, and enterprise applications using modern Microsoft technologies, cloud infrastructure, and AI-integrated solutions.
With 16+ years of experience in full-stack development and software architecture, I specialize in building high-performance SaaS platforms, enterprise systems, startup MVPs, business applications, and cloud-based solutions using .NET Core, C#, MAUI, Blazor, Azure, Angular, and React.js.
My expertise includes:
• Full-stack web application development
• SaaS platforms & startup MVP development
• Enterprise software & business systems
• AI integrations, AI agents & workflow automation
• Cross-platform mobile app development
• API development & third-party integrations
• Cloud-based architecture & Azure solutions
• Admin dashboards & scalable backend systems
• Application modernization & long-term maintenance
Microsoft & Full Stack Expertise:
• ASP.NET Core & ASP.NET MVC
• C#, .NET Core & Entity Framework
• .NET MAUI & Xamarin development
• Blazor applications & component-based UI
• Azure cloud services & deployment
• Angular & React.js frontend development
• REST APIs & microservices architecture
• SQL Server, MySQL & cloud databases
Mobile & Cross-Platform Development:
• .NET MAUI mobile applications
• Xamarin app development
• iOS & Android cross-platform solutions
• Responsive UI & performance optimization
• Native integrations & device features
AI & Automation Experience:
• OpenAI / ChatGPT integrations
• Claude AI integrations
• AI agents & intelligent assistants
• AI-powered business applications
• Workflow automation systems
• OCR & intelligent document processing
• AI-integrated SaaS platforms
• AI-powered mobile & web experiences
Cloud, DevOps & Architecture:
• Microsoft Azure cloud infrastructure
• CI/CD pipelines & deployment workflows
• Scalable architecture & system optimization
• API integrations & cloud services
• Agile development & project delivery
I have worked on SaaS products, enterprise applications, healthcare systems, eCommerce platforms, fintech solutions, CRM/ERP systems, startup MVPs, and custom business applications across multiple industries.
✔ $80K+ earnings on Upwork
✔ 32 successfully completed projects
✔ 1,480+ hours worked
✔ 16+ years of industry experience
✔ Top Rated Plus profile
I focus on building scalable, maintainable, and business-focused applications with clean architecture, strong performance, and modern user experiences.
Whether you need a SaaS platform, enterprise application, startup MVP, AI-integrated solution, cloud-based system, or cross-platform mobile app using .NET technologies, I can help transform your idea into a reliable and scalable product.
Let’s discuss your project.
Xamarin
.NET Framework
ASP.NET Core
Blazor
MVC Framework
.NET Core
Azure DevOps
ASP.NET MVC
C#
.NET Stack
ASP.NET
Microsoft Azure SQL Database
.NET Compact Framework
Mobile App Development
Microsoft Azure
Dharmandar K.
Saharanpur, India
$25/hr
4.9
42 jobs
I am an experienced Full-Stack Software Developer & Solution Architect with strong analytical and problem-solving skills, delivering scalable, secure, and high-performance applications across Web, Desktop, Mobile, Cloud, Blockchain, and AI-powered systems. I specialize in building real-time, data-intensive, and enterprise-grade solutions that solve complex business challenges.
✅ Core Technical Expertise
______________________________________________________________________
⚙️ Backend / Server-Side Development
C#, .NET Framework, .NET Core, ASP.NET MVC, Web API
Node.js, Express.js
Real-time systems using SignalR & WebSockets
Microservices architecture, RESTful APIs, modular scalable systems
🗄️ Databases & Data Engineering
SQL Server, MySQL, PostgreSQL
MongoDB, NoSQL, distributed data systems
Database optimization, performance tuning, stored procedures
🎨 Frontend Development
JavaScript, TypeScript
AngularJS, modern Angular, React (if applicable)
jQuery, Bootstrap, Knockout.js
HTML5, CSS3, SASS/SCSS, responsive UI, UX-focused development
📱 Mobile & Cross-Platform Development
Android (Native)
Xamarin, PhoneGap/Ionic
ElectronJS for cross-platform desktop apps
🛠 Tools, Libraries & Integrations
Syncfusion, PDFSharp, AngleSharp, HTML Agility Pack
Payment gateways, 3rd-party integrations, automation tools
Reporting, dashboards, multi-tenant systems
☁️ Cloud & DevOps (If you want, I can expand this section)
Azure, AWS basics
CI/CD pipelines (GitHub Actions, Bitbucket Pipelines, Azure DevOps)
Docker, containerized deployments
🧠 AI, Automation & Blockchain
AI/ML integrations, automation scripts, data processing pipelines
Bot development, chatbots, workflow automation
Ethereum blockchain development
Smart contract development (Solidity, Truffle, Web3)
🔄 Project Management & Development Methodologies
Agile, Scrum, Kanban
TDD (Test-Driven Development), Clean Code, SOLID Principles
Git, GitHub, GitLab, Bitbucket, SVN
JIRA, Azure DevOps, Trello, Freedcamp, MS Team Foundation
I follow a structured Software Development Life Cycle (SDLC) to ensure quality, reliability, and maintainability at every stage—from requirements and architecture to development, testing, deployment, and long-term support.
🌟 Why Clients Enjoy Working With Me
______________________________________________________________
Strong logical, analytical, and architectural thinking
Transparent communication and proactive collaboration
Flexible with budgets and project scopes
Committed to meeting deadlines and exceeding expectations
Focused on long-term client relationships and continuous improvement
I’m a highly self-motivated professional who takes ownership of every project. My goal is to deliver solutions that are scalable, secure, user-friendly, and aligned with your business goals.
Xamarin
C#
SQL
React
AngularJS
Knockout.js
ASP.NET
MongoDB
Hybrid App Development
Desktop Application
Apache Cordova
Ionic Framework
Gaurang D.
Ahmedabad, India
$20/hr
4.8
34 jobs
I help individuals, startups, SMBs, and enterprises build reliable, scalable, and user-friendly .NET applications.
With 12+ years of experience in custom software development, I specialize in transforming ideas into high-performing desktop, web, and mobile solutions that drive measurable business results.
➜ 𝐖𝐡𝐚𝐭 𝐈 𝐃𝐨 𝐟𝐨𝐫 𝐘𝐨𝐮
You’ll get more than just coding support — I ensure your software is:
• Reliable & Scalable → Built on robust .NET architecture.
• User-Friendly → Clean UI/UX for smooth adoption.
• Future-Proof → Modern technologies and maintainable code.
• On-Time → Agile approach with frequent updates and demos.
➜ 𝐌𝐲 𝐓𝐞𝐜𝐡𝐧𝐢𝐜𝐚𝐥 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞
• Desktop Apps: WPF, WinUI 3, UWP
• Mobile Apps: Xamarin, MAUI
• Backend & Frameworks: .NET Core, .NET 5/6/8, .NET Framework (3.5+)
• Architectures: MVVM, MVC, PRISM, Singleton, n-Tier, Dependency Injection
• Databases: SQL Server, SQLite, MySQL, Oracle
• Integrations: Google APIs, Social APIs (Facebook, Twitter, LinkedIn)
• UI/Controls: DevExpress, SyncFusion, Telerik
➜ 𝐖𝐡𝐨 𝐈 𝐖𝐨𝐫𝐤 𝐖𝐢𝐭𝐡
• Startups looking to launch MVPs
• SMEs modernizing legacy systems
• Enterprises needing robust desktop, web, or mobile apps
• B2B & B2C businesses seeking tailored software solutions
➜ 𝐌𝐲 𝐏𝐫𝐨𝐜𝐞𝐬𝐬
1. Understand your goals & requirements
2. Propose the most effective technical approach
3. Share similar past work & align expectations
4. Start with a pilot milestone (risk-free)
5. Provide regular updates, demos, and post-deployment support
➜ 𝐖𝐡𝐲 𝐂𝐥𝐢𝐞𝐧𝐭𝐬 𝐂𝐡𝐨𝐨𝐬𝐞 𝐌𝐞
• Top Rated Plus on Upwork with 100% Job Success Score
• Client-Centric Approach: clear communication, flexible engagement
• Confidentiality Assured: NDA & secure contracts
• Proven Track Record: worked with startups and global enterprises
• Easy Collaboration: available via Skype, Teams, Slack, Zoom
I’m not just a developer—I’m a partner in your project’s success. My commitment to understanding your goals and providing ongoing support reflects my dedication to achieving the best outcomes for you.
Let’s work together to create something extraordinary. Updating an existing app, or building something from the ground up — drop me a message, it is free to talk it over.
XAML
Windows Presentation Foundation
Xamarin
Desktop Application
Mobile App Development
C#
VB.NET
.NET Core
DevExpress
.NET Framework
Windows Forms
Windows App Development
Hybrid App Development
Android App Development
Universal Windows Platform
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