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A Windows Phone developer builds, tests, and deploys mobile applications for Microsoft's Windows Phone and Windows Mobile platforms using technologies like XAML, C#, and the Universal Windows Platform (UWP). These freelancers handle everything from concept and architecture to publishing apps on the Microsoft Store, ensuring smooth performance across supported Windows-powered devices. Whether you need a legacy Windows Phone 8.1 app maintained, a UWP application built for enterprise rollout, or a Silverlight project ported to a modern stack, hiring a specialist gets the job done without the overhead of a full development team.
A freelance Windows Phone developer produces functional, store-ready mobile software aligned with your business goals. The work spans new builds, feature additions, bug fixes, performance tuning, and ongoing maintenance for apps already in production. Strong developers also handle backend integration, push notifications, in-app purchases, and analytics so the app does more than just run — it generates measurable business outcomes.
Typical deliverables include source code, signed application packages (APPX or MSIX), Microsoft Store submission assets, technical documentation, and unit tests. Many clients also commission UI mockups, prototype builds for stakeholder review, and post-launch support agreements covering OS updates and device compatibility.
Windows Phone development covers a wider stack than the platform name suggests. Most modern projects sit on the Universal Windows Platform, which lets a single codebase target Windows Phone, Windows 10 Mobile, Surface devices, HoloLens, and Xbox. Skilled freelancers move comfortably across the following areas:
Experienced Windows Phone developers work daily with Visual Studio, Microsoft's primary IDE, alongside the Windows SDK and Microsoft Store dashboard. Source control typically runs through Git on Azure DevOps or similar. Common adjacent tools and technologies include:
Windows Phone and UWP development still carries weight in sectors where Microsoft's enterprise ecosystem is entrenched. Field service, logistics, healthcare, manufacturing, and government agencies frequently run line-of-business apps on Windows-powered handhelds and ruggedized tablets. Common project types include warehouse scanning apps, inspection checklists, point-of-sale software, internal communication tools, and employee directories tied into Active Directory or Microsoft 365.
Smaller engagements often involve maintaining published apps for legacy users, porting Silverlight code to UWP, or rebuilding Windows Phone apps for Windows 11 desktop and Surface devices.
Strong candidates should demonstrate published apps in the Microsoft Store, sample code repositories on GitHub, and clear experience with the specific Windows version your project targets. Look for fluency in C#, XAML, and asynchronous programming patterns, plus familiarity with MVVM architecture. Experience with Azure services, REST APIs, and continuous integration is a strong signal for any non-trivial build.
Useful interview questions you can copy and use:
Freelancer.com gives you direct access to a global community of Windows Phone, UWP, and Xamarin developers with experience across the full Microsoft mobile stack. Because the talent pool spans every continent, you can find specialists in legacy Silverlight maintenance as readily as developers focused on modern UWP and .NET MAUI work. Clients set their own budgets and receive competitive bids, with profile ratings, verified reviews, and portfolio samples available for every freelancer. Milestone Payments hold funds in escrow until you approve completed work, giving you confidence whether you are commissioning a small bug fix or a multi-month enterprise app build.
Ready to get started?
Hiring a Windows Phone developer on Freelancer.com is straightforward when you approach it with a clear brief and a structured review process. The steps below walk you through posting your project, assessing bids, and choosing the right developer for your UWP, Silverlight, or Xamarin work.
The clarity of your project post directly determines the quality of bids you receive. A well-scoped Windows Phone brief filters out generic mobile developers and attracts specialists who already work with C#, XAML, and the Microsoft Store submission process. Head to the
Bids on Freelancer.com are short proposals, not just price tags. Each one signals how the developer interprets your brief, what architecture they would propose, and whether they have shipped comparable Windows Phone or UWP work. Read carefully and shortlist candidates whose understanding of the project matches your requirements.
Final selection should combine the strength of the proposal with hard evidence on each freelancer's profile. Look for consistency across past work rather than a single standout project, since Windows Phone and UWP builds reward depth of experience with the Microsoft stack.
Yes, particularly for enterprise and legacy use cases. Many organizations still run line-of-business UWP apps on Windows-powered handhelds, tablets, and Surface devices, and existing Microsoft Store apps need ongoing maintenance, OS compatibility updates, and feature additions.
Windows Phone development originally targeted Windows Phone 7, 8, and 8.1 using Silverlight or the Windows Runtime. UWP, introduced with Windows 10, replaced that model with a single codebase that runs across Windows phones, desktops, Xbox, and HoloLens. Most freelancers experienced in Windows Phone work also handle UWP projects.
Yes. Many Windows Phone developers also work in Xamarin or .NET MAUI and can port a legacy Silverlight or WP8.1 app to UWP, Android, and iOS using shared C# code. Discuss your existing codebase, business logic, and target platforms with candidates so they can scope the migration accurately.
Timelines depend on scope. A bug fix or store re-submission may take a few days, while a new UWP app with backend integration, push notifications, and Microsoft Store launch typically runs several weeks to a few months. Ask each freelancer for a milestone-based schedule before awarding the project.
For most projects, a skilled freelancer or small team handles the full lifecycle from architecture through Microsoft Store submission. Agencies are useful only for very large, multi-platform programs requiring dedicated project management, QA, and design teams.

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