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Hire the Best Xamarin Developers

Clients rate our Xamarin Developers
Rating is 4.7 out of 5.
4.7/5
Based on 1,217 client reviews
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Aiyaar O.

Hangu, Pakistan

$23/hr
4.7
74 jobs

🏗️ Most developers build mobile apps. I build mobile products that survive version 2. Top Rated · $90K+ Earned · 100% Job Success · 7+ Years Experience There's a difference between an app that launches and an app that lasts. After 7+ years and 50+ production apps — built for startups shipping their first product and enterprises modernizing legacy Xamarin codebases — I know exactly what separates the two: architecture decisions made on day one. I specialize in .NET MAUI for cross-platform iOS & Android, with deep roots in Flutter, Xamarin, and ASP.NET Core backend. Whether you're starting fresh or inheriting a mess, I'll tell you the truth about what it takes — then build it. WHY CLIENTS CHOOSE ME ✅ Cross-platform apps that feel native — without the native price tag ✅ Clean MVVM + Dependency Injection architecture you won't rewrite in 12 months ✅ CI/CD pipelines, automated testing, and App Store deployment handled end-to-end ✅ Clear communication, regular updates, zero ghosting ✅ Long-term thinking — I build for your product's future, not just the current sprint WHAT I BUILD 📱 Mobile Apps (iOS & Android) → .NET MAUI with Shell navigation, MVVM, CommunityToolkit & Dependency Injection → Flutter with Dart, Provider / Riverpod / Bloc, and native integrations → Pixel-perfect responsive UI, 60fps animations, platform-specific optimizations → Offline-first architecture with local SQLite / Realm databases 🔄 Xamarin → .NET MAUI Migrations → Full codebase audit, renderer → handler migration, performance benchmarking → Upgraded to modern .NET 8/9 with Hot Reload and improved startup time → Custom controls rewritten with the new MAUI Graphics API ⚙️ Backend & Cloud → ASP.NET Core REST APIs with JWT auth, rate limiting & Swagger docs → Azure (App Service, Functions, Blob Storage, Notification Hubs, AD B2C) → Firebase (Auth, Firestore, Realtime DB, FCM push notifications) → Real-time features with SignalR — chat, live dashboards, instant notifications → GraphQL APIs and third-party integrations (Stripe, Twilio, Google Maps, SendGrid) 🤖 AI-Powered Features → On-device OCR with ML Kit & Tesseract → OpenAI / GPT-powered chatbots and voice-to-text (Whisper API) → Image recognition with Azure Vision & TensorFlow Lite → Smart search and recommendation engines 🛒 Complex App Features → Stripe & in-app purchase subscriptions (App Store / Play Store billing) → Real-time booking systems with calendar sync and push reminders → Google Maps / Mapbox with geofencing and live location tracking → Multi-role user systems with granular permissions and admin panels APPS I'VE SHIPPED TrinDocs · Crushfit · Slice & Spin · CV Wallet · HBoxTV — and 45+ more TECH STACK AT A GLANCE Mobile → .NET MAUI · Flutter · Xamarin Backend → ASP.NET Core · Node.js · GraphQL · SignalR Cloud → Azure · Firebase · AWS Database → SQL Server · PostgreSQL · SQLite · Firestore DevOps → GitHub Actions · Azure DevOps · App Center · Fastlane HOW WE'LL WORK TOGETHER You send a message describing your project We jump on a free 15-minute discovery call I send a clear proposal with architecture plan, timeline & milestones We build — with weekly demos, clean git history, and zero surprises Ready to build something great? Send me a message — I typically respond within a few minutes.

  • Xamarin
  • iOS Development
  • Mobile App Development
  • Azure DevOps
  • Mobile App
  • Flutter
  • FlutterFlow
  • OpenAI API
  • GraphQL
  • SignalR
  • Microsoft Azure
  • Firebase
  • CI/CD
  • UI/UX Prototyping
  • API Integration
  • Stripe
  • .NET Core
  • ASP.NET Core
  • Unit Testing
  • Android App Development
Usama I.

Mandi Bahauddin, Pakistan

$35/hr
5.0
15 jobs

I help companies migrate Xamarin applications to .NET MAUI, fix difficult ASP.NET Core issues, and rescue legacy .NET systems that other developers struggle to stabilize. Clients usually hire me when: • A Xamarin → .NET MAUI migration is failing or incomplete • An ASP.NET Core backend issue has remained unresolved • Performance problems are slowing down production systems • A legacy .NET application needs modernization without downtime • A desktop/mobile system requires reliable long-term architecture Recent work includes: • Migrating production Xamarin apps to .NET MAUI • Resolving long-standing ASP.NET Core issues unresolved by previous freelancers • Building high-performance middleware for machine communication • Developing POS and enterprise systems using ASP.NET Core, Blazor, and WPF I focus on fast diagnosis, maintainable architecture, and reliable delivery with minimal hand-holding. Core Expertise: • .NET MAUI & Xamarin Migration • ASP.NET Core MVC / Web API • Blazor & Enterprise Web Applications • WPF Desktop Applications • SQL Server Optimization & Entity Framework Core • REST APIs & Backend Architecture • Middleware & Hardware Communication Systems • Performance Optimization & Debugging Technical Stack: C#, .NET MAUI, Xamarin, ASP.NET Core, Blazor, WPF, Entity Framework Core, SQL Server, SignalR, REST APIs, Azure App Services, Web API, JavaScript Currently working full-time on enterprise ASP.NET Core systems, REST APIs, SQL optimization, and large-scale .NET applications. I communicate clearly, work independently, and write clean, scalable code designed for long-term maintainability.

  • Xamarin
  • ASP.NET Core
  • .NET Core
  • C#
  • Blazor
  • .NET Framework
  • React
  • SQL
  • Web API
  • Microsoft Azure
  • Entity Framework
  • JavaScript
  • RESTful API
  • Mobile App Development
  • Desktop Application
  • SignalR
  • AI Model Integration
  • App Store Upload
  • Microsoft SQL Server Administration
  • iOS Development
Dhaval J.

Surat, India

$15/hr
4.3
28 jobs

I help startups build and launch high-performance mobile apps in 4–8 weeks using Flutter. From MVP to scalable production apps, I focus on speed, stability, and real business outcomes. I specialize in building Flutter mobile apps with scalable backend systems for startups and growing businesses. 👉 Over the past few years, I have: • Built 20+ mobile apps (iOS + Android) • Helped startups launch MVPs in under 6 weeks • Improved app performance by 30–50% • Delivered apps supporting 10K+ users 🚀 What I Can Help You With • Flutter app development (iOS + Android) • MVP development (fast launch, scalable base) • API integration & backend (Node.js / .NET) • Real-time features (chat, notifications) • Payment integration (Stripe, Razorpay) • App performance optimization 💡 Why Clients Hire Me • I focus on launching products fast, not just writing code • Clean architecture → easy to scale later • Strong communication → no confusion, no delays 🤜 Send me your idea, and I will help you turn it into a working app.

  • Xamarin
  • Flutter
  • FlutterFlow
  • Mobile App Development
  • App Development
  • Mobile UI Design
  • C#
  • Artificial Intelligence
  • Android
  • iOS Development
  • ASP.NET Core
  • Web Application Development
  • Supabase
  • Firebase
  • Infovisa MAUI
Dhaval P.

Vadodara, India

$35/hr
4.9
60 jobs

👋 Hi, I'm Dhaval — Senior Full Stack Developer | React.js | Node.js | .NET | Cloud With 13+ years of experience, I build modern, scalable, and high-performance web & mobile applications that drive real business results. From US taxation systems to stock exchange (LSE) trading platforms, I’ve delivered reliable, enterprise-grade solutions that stand the test of scale and complexity. 💡 What I Bring to the Table Frontend: React.js, Next.js, Angular, Blazor, Vue.js, Electron Backend: Node.js, C# .NET (ASP.NET Core/MVC), Microservices, REST & GraphQL APIs Integrations: Zoom, QuickBooks, Zoho, Google Maps, Payment & CRM APIs Mobile: React-Native, Xamarin.Forms (Cross-platform) AI & Automation: Smart workflows and ML-driven insights Cloud & DevOps: Azure DevOps, AWS (Lambda, Cognito, API Gateway, DynamoDB) Databases: SQL Server, PostgreSQL, MySQL, MongoDB, DynamoDB ⚙️ Tools & Frameworks I Use Redux, NgRx, Highcharts, AG Grid, Material UI, Ant Design, Bootstrap, jQuery, Sequelize, Mongoose, WCF, MVVM, NServiceBus 🚀 Why Clients Choose Me Proven experience leading architecture and development of complex systems Passion for clean code, scalability, and long-term maintainability Excellent communication, reliability, and on-time delivery Flexible across time zones with a proactive, problem-solving mindset Let’s collaborate to build something impactful — whether it’s a new idea from scratch or enhancing your existing platform. I’m open to both short-term projects and long-term partnerships.

  • Xamarin
  • ASP.NET
  • Amazon Web Services
  • C#
  • Windows Presentation Foundation
  • React
  • Node.js
  • ASP.NET MVC
  • Microsoft Silverlight
  • React Native
  • iOS
  • MEAN Stack Administration
  • Tablet
  • Jest
  • Angular 9
Altaf ur R.

Lahore, Pakistan

$17/hr
4.8
127 jobs

I have 14 years of experience in Java, Android, iPhone, and Web Development. I have developed over 150 Android and iPhone apps, many of which are available on various app stores, along with their corresponding backends and web applications. I am capable of delivering any type of high-quality application on time. ✅ Top Rated ✅ More than 10600 hours of work ✅ SwiftUI, React Native, Flutter, MAUI ✅ Back-end API development (Node.JS / Flask / Django) ✅ Machine Learning

  • Xamarin
  • JavaScript
  • React Native
  • Swift
  • tvOS
  • Objective-C
  • C#
  • Smartwatch
  • Android App Development
  • iOS SDK
  • Flutter
  • Machine Learning
David S.

North Miami, Florida

$100/hr
5.0
7 jobs

Hi, I'm David, a seasoned mobile app developer with extensive experience across diverse client bases, from individuals to Fortune 100 companies. Specializing in Xamarin, I am known for my unwavering dedication and ability to deliver under pressure, making me the go-to developer for mission-critical projects and tight deadlines. My portfolio showcases my proven track record of successful delivery.

  • Xamarin
  • C#
  • iOS Development
  • Android App Development
  • Mobile App Development
  • Mobile App Development Consultation
  • Mobile App Redesign
  • AI Mobile App Development
  • Mobile App Improvement
  • Mobile App Localization
  • Mobile App Bug Fix
  • XAML
  • Mobile Development Framework
  • .NET Stack
  • App Development
  • App Feature Development

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How to Hire Top Xamarin Developers

How to hire Xamarin developers

How do you find the right Xamarin expert to help your business create, develop, or integrate multi-platform software with Mono, Mono-Touch, or Mono for Android? Here’s an overview of what you can do to find, hire, and work with an independent Xamarin professional.

How to write an effective Xamarin developer job post

With a clear picture of your ideal Xamarin professional in mind, it’s time to write your job post. Although you don’t need a full job description as you would when hiring an employee, aim to provide enough detail for a contractor to know if they’re the right fit for the project.

An effective Xamarin job post should include:

  • Scope of work: From specific functionality to documentation, list all the deliverables you’ll need.
  • Project length: Your job post should indicate whether this is a smaller or larger project.
  • Background: If you prefer experience with certain industries or applications, mention this here.
  • Budget: Set a budget and note your preference for hourly rates vs. fixed-price contracts.

Ready to get your software project moving forward? Log in and post your Xamarin job on Upwork today.

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XAMARIN DEVELOPERS FAQ

Frequently asked questions

What is Xamarin?

Xamarin is a San Francisco company responsible for the powerful multi-platform common language interfaces Mono, Mono-Touch, and Mono for Android.

Modern businesses and organizations rely on applications and software suites that are often developed and implemented by businesses in very different high-level programming languages. On top of that, each one is required to interact with a multitude of different platforms and systems.

To help developers and programmers seamlessly integrate different software aspects, common language interfaces have been developed. Xamarin is one of them.

Why hire Xamarin developers?

Xamarin specialists are highly-skilled computer programmers with a wide variety of experience working with the Xamarin Mono products.

These skills can be leveraged to help organize mobile software and applications as well as develop and create networking protocols for different services.

Xamarin specialists are also familiar with the Microsoft .NET framework and can help you leverage both Xamarin products and the .NET framework in powerful and highly customized ways for your business and products.

How much does it cost to hire a Xamarin developer?

Rates can vary due to many factors, including expertise and experience, location, and market conditions.

  • An experienced Xamarin expert may command higher fees but also work faster, have more-specialized areas of expertise, and deliver higher-quality work.
  • A contractor who is still in the process of building a client base may price their Xamarin services more competitively.

Which one is right for you will depend on the specifics of your project.

Native vs. Xamarin

In the world of mobile development, you can either develop native mobile apps specifically for iOS, Android or Windows, or you can opt for two other routes—hybrid apps or cross-platform apps.

While native apps offer incomparable performance and user experience, not every company has the resources to develop native apps for each platform. Cross-platform software in particular has created a flexible, efficient alternative to native apps, yielding apps that can run on multiple platforms and devices without having to be entirely rewritten for each.

But accomplishing a native user experience without native app code comes with a few compromises: larger app file size, differences in performance, more code overhead, and in some cases, the cost of the platform itself. Not all cross-platform softwares are created equal, but some offer advantages that might be better suited to your mobile app goals.

So which route should you take? To help you weigh the pros and cons of native vs. cross-platform before kicking off your mobile project, here’s a comparison of native apps with one of the most popular cross-platform solutions, Xamarin.

What’s the difference between a native app and a cross-platform app?

Native apps can only run on one platform because they’ve been specifically written for that app, whether it’s an iOS app written in Objective-C and Swift, or an Android app written in Java and Kotlin. Being written specifically for that platform has its advantages: the code is optimized for the operating system, it can run natively on the device without compiling or a web wrapper, it has direct access to device features, and it gives users the most native-feeling user interface (UI).

Cross-platform apps have an advantage, however: they allow mobile developers to create one source code for an app using common web technologies, which the platform then converts into code for the native environment. The immediate benefits? There’s a much more native app-like performance than a hybrid app. Also, developers can reuse code that’s already been written, letting the platform handle the compiling. This makes it faster and more cost-effective.

So now that we’ve covered how native apps and cross-platform apps differ, let’s look at a popular cross-platform software, Xamarin, and see how its features and capabilities stack up to a native app.

Xamarin is a cross-platform software that generates native apps with platform-specific user interfaces (UI)s. Xamarin compiles the app’s code base and UI code by accessing native APIs for each platform, whether that’s Android, iOS, or Windows. What you get in a totally native experience you do get in file size—Xamarin has some overhead, but the native experience and launch speed users get is nearly unmatched.

Xamarin basics

  • Programming language: C#—”anything you can do in Objective-C, Swift and Java you can do with C# in Xamarin.”
  • Platforms: iOS, Android, Windows, Blackberry
  • Platforms: iOS, Android, Windows, Blackberry
  • Open-source
  • Xamarin TestCloud: TestCloud allows you to run automated testing on your apps on over 2,000 devices, and build, test and monitor your app in the cloud after development.
  • HockeyApp:  Xamarin’s mobile DevOps support, which allows you to distribute beta versions, collect live crash reports, get feedback from real users and analyze test coverage.
  • Xamarin.Forms library: This is how the native UIs are created and rendered using native controls of each platform.
  • Design patterns: MVC (Model View Controller), MVVM (Model View ViewModel)
  • Companies using Xamarin: Slack, GitHub, Foursquare, jetBlue

With native…

Developers have to write one set of native code for each platform, with that platform’s programming language and frameworks. If you want to create native apps for more than one platform, that often means double the work, double the resources, and more time spent updating, patching, and debugging each app in the future. That code is optimized for that platform, but it can run there and only there.

With Xamarin…

A shared code base requires less time and resources. When you’re working with the one, shared C# code base, that code base can be used among the three platforms, leaving the majority of the effort to creating the platform-specific UIs. Think of it like 70% Xamarin code and about 30% native code—and the Xamarin code is reusable with the .Forms library. Note that it can be helpful to have an experienced Xamarin expert who knows their way around the platform to keep code neat and organized.

Apps are easy to update. One of its core benefits is the ability to make updates, changes, and improvements to the app over the lifespan of an app relatively easily. With native, the process is similar, only it’s duplicated for each version of the app.

If you know C#, it’s not hard to learn. C# is a pretty common programming language that many web developers already know, so it doesn’t require learning another platform-specific language and framework. You’ll need to know languages for the native environments—whether that’s Java and Kotlin or Objective-C and Swift.

You’ll get device API access so your app can fully access device features. This means your app can fully access native capabilities, just like a native app. This is one way Xamarin stands out from other cross-platform softwares.

Wondering which route is best for your mobile app?

The best way to approach your mobile app project is usually to consult with a skilled, experienced freelance mobile developer like those you can find on Upwork—someone who will be able to talk through what you’re looking for from your app so you can choose the option that will give you the best results to fit in your scope, budget, and timeline.

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