Xamarin & .NET MAUI Consultants
We've been building Xamarin apps since the early days. Now we help companies migrate to .NET MAUI, build new cross-platform apps, and keep existing Xamarin projects running. Our founder Michael Ridland was a Xamarin MVP and has been shipping .NET mobile apps for over a decade.
Your .NET MAUI agency, consultants, developers and experts across Sydney, Melbourne and Brisbane.
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You're in Safe Hands
Not many teams left in Australia with genuine Xamarin depth. We've been doing this since before Microsoft bought Xamarin.
Xamarin Since Day One
Our founder was a Xamarin MVP. We were building Xamarin apps years before Microsoft acquired the platform. That kind of depth matters when you're migrating complex apps.
100% Migration Success
Every Xamarin to MAUI migration we've done has shipped successfully. We know where the rough edges are and how to handle them without breaking production apps.
Senior .NET Developers Only
Finding devs who know Xamarin well is hard enough. Ours have shipped real apps with it for years, not just done a tutorial. They know C#, MVVM, and the native platform APIs inside out.
Xamarin & MAUI Services
Whether you're migrating an existing Xamarin app or starting fresh with .NET MAUI, we handle the full lifecycle.
Xamarin to MAUI Migration
Xamarin support ended in May 2024. We migrate your Xamarin.Forms and Xamarin.Native apps to .NET MAUI with minimal disruption to your users and your team.
.NET MAUI New Builds
New cross-platform apps built with .NET MAUI from the ground up. One C# codebase targeting iOS, Android, Windows and macOS with native performance.
Xamarin Forms Maintenance
Still running Xamarin? We can maintain and extend your existing app while you plan the migration. Bug fixes, feature updates, and OS compatibility patches.
Cross-Platform Enterprise Apps
Enterprise-grade cross-platform apps with SSO, MDM, offline sync and backend integration. Built for the compliance requirements large organisations actually deal with.
Xamarin.iOS / Xamarin.Android Native
Platform-specific Xamarin apps that tap into native APIs directly. Camera, Bluetooth, GPS, biometrics -- all the hardware features your app needs, written in C#.
Backend & API Integration
We're a .NET shop through and through. ASP.NET Core APIs, Azure services, SQL Server -- your mobile app and backend speak the same language.
Success Stories
Real .NET mobile projects we've shipped
Award-Winning Mobile Banking App
We built Newcastle Permanent's mobile banking app using Xamarin. It won a Silver Design Award and became the primary channel for customer banking. Built with C# and Xamarin.Forms, now running on .NET MAUI.
Telstra Asset Tracking
Australia-wide IoT asset tracking platform built with Xamarin. Bluetooth beacon integration, offline sync, and 25,000+ field workers using it daily.
Medibank
Healthcare mobile platform with 4.7 rating and 99.9% uptime serving 100,000+ users. Cross-platform .NET mobile app for doctors and patients.
Coast Smoke Alarms
Field service app for technicians doing smoke alarm inspections across Queensland. Offline-capable, built with Xamarin.Forms and synced to a .NET backend.
Need to Migrate Your Xamarin App?
Xamarin support has ended. Talk to us about migrating to .NET MAUI before your app falls behind on OS updates.
Get Your Migration AssessmentWhy We Know Xamarin & MAUI Better Than Anyone
Team 400's roots are in .NET mobile. Our founder Michael Ridland was a Xamarin MVP and well-known contributor in the Xamarin community. He was building commercial Xamarin apps before most agencies had even heard of it.
That heritage means we understand Xamarin at a level most consultancies can't match. We've dealt with the renderers, the linker issues, the platform-specific gotchas. When you bring us a complex Xamarin codebase, we've likely seen something similar before.
- Xamarin MVP founder
Michael Ridland was recognised by Microsoft as a Xamarin MVP for his contributions to the ecosystem
- Early .NET MAUI adopters
We started working with MAUI during the preview releases and have been shipping production apps since GA
- Full .NET stack
Your mobile app, API, and backend all in C# and .NET -- one team, one language, no translation layer
Our .NET Mobile Track Record
"Team 400 knew Xamarin inside out. They migrated our banking app to MAUI without a single day of downtime."
Australian Financial Services Company
"We'd been quoted 12 months by another consultancy. Team 400 had us on MAUI in 4 months."
Enterprise Field Services Company
"Our Xamarin app had 50+ custom renderers. Team 400 mapped every one and migrated them to MAUI handlers. Nothing broke."
Melbourne Manufacturing Company
Why Team 400
We're not AI consultants who started yesterday and can't code. We're top engineers who've been building business software & AI systems for 25+ years.
Top Engineers
Top 5% talent. 10+ years experience each. Principal-level engineers and solution architects. We've built the integrations your AI needs to actually work.
R&D-Driven
Early adopters of Claude Workspaces, AI Agents, and the latest AI tools. We test what's next so you get what actually works in production.
We Make It Work
We don't walk away until it's successful. No matter what obstacles come up, we find a way. Your AI project will work, that's not negotiable.
Michael Ridland
25+ years developing AI-driven software solutions. Founded and scaled an award-winning AI consultancy from startup to 85 professionals. Microsoft MVP Alumni, international speaker, and creator of influential open-source projects.
How We Work
Whether it's a migration or a new build, here's what working with us looks like
Assessment
We audit your existing Xamarin codebase, identify migration risks, and map out what needs to change. For new builds, we scope the full project.
You get:
Migration report + cost estimate
- Codebase audit
- Risk identification
- NuGet dependency check
Planning
We plan the migration path or new app architecture. Which features migrate first, which custom renderers need rewriting, what can stay the same.
You get:
Detailed migration plan + timeline
- Architecture decisions
- Phased migration plan
- Testing strategy
Build & Migrate
Two-week sprints with working builds at the end of each one. You'll see the app running on your device as we go, not just at the end.
You get:
Working builds every 2 weeks
- Sprint delivery
- CI/CD pipeline
- Regular demos
Launch & Support
We handle the App Store submission, monitor the rollout, and stick around to make sure everything runs properly in production.
You get:
Store deployment + 30-day support
- Store submission
- Performance monitoring
- Ongoing maintenance
Why Our Process Works
Predictable Timelines
You'll know the milestones upfront and we'll hit them. No vague timelines or shifting goalposts
You're in the Loop
Regular demos and check-ins so you always know exactly where your migration stands
Zero Downtime
Your existing app keeps running while we build the new version. Users don't notice a thing
What Our Clients Say
Real results from real Australian businesses
"This work team is absolutely outstanding"
CEO
Cargo Guardian
"Your work is great, its going to save us a huge amount of time"
CEO
Coast Smoke Alarms
.NET MAUI Consultants Across Australia
Local Xamarin and .NET MAUI expertise in Sydney, Melbourne and Brisbane -- with deep knowledge of the industries that drive each city.
Xamarin & MAUI Consultants Sydney
Sydney's banking, insurance and enterprise sector runs on .NET. Many of these organisations built their first mobile apps on Xamarin and now need a clear path to .NET MAUI. We've done this for some of the biggest names in Australian financial services.
Banking & Fintech
Migrate banking apps from Xamarin to .NET MAUI with zero downtime. Biometric auth, encryption and APRA compliance intact throughout.
Insurance & Wealth
Portfolio trackers, claims apps and member portals. We handle the migration while preserving complex business logic and integrations.
Enterprise & Government
Large organisations with .NET backends chose Xamarin for mobile. We modernise to .NET MAUI so everything stays on one consistent stack.
Xamarin & MAUI Consultants Melbourne
Melbourne's manufacturing sector, education institutions, and startup ecosystem all rely on cross-platform mobile apps that just work. We help Melbourne companies migrate to .NET MAUI or build new apps from scratch.
Manufacturing & Industrial
Factory floor apps with IoT sensor integration, equipment monitoring and offline capability. One codebase across tablets and ruggedised devices.
Education & EdTech
Student and staff apps for Melbourne's universities. Cross-platform means iOS and Android from one codebase, keeping costs manageable for education budgets.
Startups & Scale-ups
Ship on iOS and Android simultaneously without doubling your dev team. .NET MAUI lets Melbourne startups move fast with native performance.
Xamarin & MAUI Consultants Brisbane
Queensland runs on industries that need field-ready mobile apps -- mining, agriculture, government, logistics. We build .NET mobile solutions with offline capability, rugged device support, and field-ready reliability.
Mining & Resources
Field inspection apps and asset tracking for remote mine sites. Offline-first architecture that works where there's no signal, syncing when connectivity returns.
Government & Defence
Secure cross-platform apps for Queensland government agencies. .NET's security model meets the standards government IT teams require.
Field Services & Agriculture
Job management, digital forms and technician apps. Offline capable with photo capture, GPS tagging and signature collection across vast properties.
Start Risk-Free with a Migration Assessment
Not sure what migrating to MAUI involves? We'll assess your codebase and give you a clear picture before you commit to anything.
Fixed-Price Assessment
- Full codebase audit and compatibility check
- NuGet package migration analysis
- Detailed cost estimate for full migration
- Phased migration roadmap
No Obligation to Continue
- Keep the assessment regardless
- Use our plan with any development team
- Only proceed if you're 100% confident
- Senior .NET developers only -- no juniors
Technologies We Work With
Xamarin & MAUI
- Xamarin.Forms
- Xamarin.iOS & Xamarin.Android
- .NET MAUI
- MAUI Blazor Hybrid
- XAML & C# Markup
- MVVM & MVU Patterns
.NET Platform
- C# & .NET 8/9
- ASP.NET Core
- Entity Framework Core
- Minimal APIs & gRPC
- Azure Functions
- Blazor
Cloud & Services
- Azure App Services
- Azure DevOps & CI/CD
- Azure SQL & Cosmos DB
- App Center & Diagnostics
- Azure Notification Hubs
- Push Notifications
Frequently Asked Questions
Microsoft ended Xamarin support in May 2024. Xamarin.Forms, Xamarin.iOS and Xamarin.Android no longer receive security updates, bug fixes or OS compatibility patches. If your app is still on Xamarin, it will gradually break as Apple and Google release new OS versions. .NET MAUI is the official successor and the migration path Microsoft recommends.
It depends on the complexity of your app. A straightforward Xamarin.Forms app with standard controls can often be migrated in 4-8 weeks. Apps with heavy custom renderers, platform-specific code, or outdated NuGet packages can take 3-6 months. We start with a fixed-price assessment that gives you a realistic timeline before you commit.
Yes. We can keep your Xamarin app running with bug fixes, feature updates and OS compatibility patches while you plan and budget for the migration. Many clients run maintenance and migration in parallel so users are never disrupted.
.NET MAUI (Multi-platform App UI) is Microsoft's evolution of Xamarin.Forms. It uses the same C# and XAML skills but runs on the modern .NET platform with better performance, a unified project structure, and support for iOS, Android, Windows and macOS from a single codebase. Custom renderers are replaced by handlers, which are simpler to write and maintain.
Both. We build brand-new cross-platform apps with .NET MAUI from scratch, and we migrate existing Xamarin apps. If you're starting fresh and your team already knows C# and .NET, MAUI is a strong choice for cross-platform mobile development.
In practice, the best .NET MAUI developers are former Xamarin developers. The platform evolved from Xamarin, so understanding the legacy architecture is critical for migrations. We have both -- developers who know Xamarin inside out and can also build modern MAUI apps.
Yes. We work with companies across all of Australia and have delivered projects for clients in Perth, Adelaide, Hobart and regional areas. Most of our work is done remotely with regular video check-ins, so location isn't a barrier.
It varies based on scope. A migration assessment starts at a fixed price so you know what you're getting into. Full migrations and new builds are quoted per project with clear milestones. We don't do open-ended time-and-materials billing -- you'll know the cost before we start.
Ready to Talk About Your Xamarin or MAUI Project?
Tell us about your project and we'll get back to you with honest advice on the best approach -- whether that's migration, rebuild, or maintenance.
More Services
Xamarin and MAUI are one piece of the puzzle. We also build .NET backends, web platforms, AI solutions and mobile apps across Australia.