Tim Barry-Woods

5.0

(20 reviews)

US$35.00

For every 15 mins

Sessions/Jobs

ABOUT ME

Expert C# .NET Developer & MAUI/WPF specialist.

I’m a senior .NET UI developer with 15+ years of experience, specializing in WPF and .NET MAUI for cross-platform and Windows applications. I’ve worked with startups, enterprises, and financial institutions, helping teams build scalable, high-performance UI solutions.

As a mentor and consultant, I enjoy helping developers level up their skills, solve complex UI problems, and improve their software architecture. Whether you need guidance on a tricky issue, code reviews, or hands-on problem-solving, I’m happy to help.

Expertise

✅ WPF & .NET MAUI – UI development, best practices, and performance optimization
✅ Modernizing legacy apps – migrating from older frameworks, improving maintainability
✅ Code architecture & design patterns – MVVM, dependency injection, scalability
✅ Debugging & troubleshooting – solving tricky UI bugs, performance bottlenecks
✅ General .NET development – C#, asynchronous programming, API integration

I provide one-off mentoring sessions, ongoing guidance, and freelance consulting. If you're working with WPF, .NET MAUI, or need help with UI development, let’s chat!

Italian, English

Kuala Lumpur (+08:00)

Joined April 2018

EXPERTISE

15 years experience | 5 endorsements

I have over a decade of professional C# experience working for international investment banks, startups and freelance clients. I've worke...

I have over a decade of professional C# experience working for international investment banks, startups and freelance clients. I've worked on a range of applications using the full .NET stack, including desktop & web, front-end and back-end development, and API integrations.

Azure WPFWpf mvvm prism multithreading c#

Azure WPFWpf mvvm prism multithreading c#WCF (Windows Communication Foundation) Service ASP.NET Nunit WinForms Visual Studio Telerik

.NET MAUI

2 years experience

I have extensive experience with both .NET MAUI and its predecessor Xamarin.Forms, having worked on multiple cross-platform applications....

I have extensive experience with both .NET MAUI and its predecessor Xamarin.Forms, having worked on multiple cross-platform applications. I developed and maintain a .NET MAUI app for iOS and Android, including its earlier versions built with Xamarin. I have also migrated multiple apps from Xamarin.Forms to MAUI, gaining deep insight into the framework’s improvements, challenges, and best practices. My expertise includes optimizing performance, implementing MVVM architecture, handling platform-specific customizations, and integrating native APIs.

Xamarin

WPF

15 years experience

I've used WPF to develop a range of applications for international investment banks and other clients. I'm comfortable working with Style...

I've used WPF to develop a range of applications for international investment banks and other clients. I'm comfortable working with Styles, Animations, ControlTemplates, DataTemplates, Bindings, Convertors etc. I've developed custom controls and used third-party libraries (Telerik, Infragistics) to create a range of applications, maintaing a focus on performance and slick and intuitive user experiences.

MVVMWpf mvvm prism multithreading c#Mef

MVVMWpf mvvm prism multithreading c#MefWCF (Windows Communication Foundation) Service

Xamarin

4 years experience

I have extensive experience with both Xamarin and .NET MAUI, having worked on multiple cross-platform applications. I developed and maint...

I have extensive experience with both Xamarin and .NET MAUI, having worked on multiple cross-platform applications. I developed and maintain a .NET MAUI app for iOS and Android, including its earlier versions built with Xamarin. I have also migrated apps from Xamarin.Forms to MAUI, gaining deep insight into the framework’s improvements, challenges, and best practices. My expertise includes optimizing performance, implementing MVVM architecture, handling platform-specific customizations, and integrating native APIs.

ASP.NET

2 years experience

I worked on a very popular travel website built in ASP.NET. I developed frontend and backend features, ran A/B tests and extensively over...

I worked on a very popular travel website built in ASP.NET. I developed frontend and backend features, ran A/B tests and extensively overhauled site infrastructure. I've also built internal dashboards using ASP.NET MVC and Web API.

Asp.net web api 2Microsoft SQL Server SQL

JavaScript

2 years experience | 1 endorsement

Developed new UI features and implemented A/B tests in Javascript while working on a popular travel website.

Selenium HTML/CSS jQuery

Selenium HTML/CSS jQuery LESSHtml5, css3 and jquery

Azure

5 years experience

I've used Azure for hosting personal projects using ASP.NET, Web API and MS SQL databases.

REVIEWS FROM CLIENTS

5.0

(20 reviews)

Tony Talwar

June 2019

had another great session to figure our a gnarly API call. Tim figure it out!

Tony Talwar

May 2019

Tim was quickly able to figure out my problem in an area he, admittedly, was not too familiar with - Azure functions - and still work out a solution based on his experience. Explained things very well.

Drew Gorham

May 2019

Tim helped me solve my problem in 8 minutes. Fantastic!

Alex Popa

May 2019

Highly recommended, speedy and efficient, a great help

Salman Mushtaq

August 2018

Tim submits work always on time. Great. Recommended.

Salman Mushtaq

August 2018

Again great work !

Salman Mushtaq

July 2018

Very professional work and also meet the time deadline. Recommended !

Seth Cleaver

July 2018

My initial session with Tim was positive. Tim assisted me with some code, talked about re-use scenarios and pointed me in the right direction. Will use again.

Mike S

June 2018

Tim is superb mentor. Great session

Aline Guetta

June 2018

Definitely the BEST MENTOR I ever had!!! Highly talented, very skilled, with deep knowledge in a bunch of different languages and libraries. He did a wonderful job, I loved how he challenged me and even more how he encouraged me. I learned tons of things in very short time and he was very honest with the price. He gave me great recommendations, he was very patient and super responsive! Looking forward to work with him again! Highly recommended!!!!!

SOCIAL PRESENCE

Stack Overflow

185 Reputation

EMPLOYMENTS

.NET UI Developer (Freelance Consultant)

Visual Service

2019-09-01-Present

• Lead developer for WPF application on Windows.
• Develop and maintain .NET MAUI app for iOS and Android, with primary responsibi...

• Lead developer for WPF application on Windows.
• Develop and maintain .NET MAUI app for iOS and Android, with primary responsibility for the iOS platform.
• Contribute to both feature development and long-term architecture, improving performance, maintainability, and scalability.
• Refine and implement UI/UX designs while enhancing development workflows according to best practices.
• Mentor junior team members and participate in technical and strategic discussions, including hiring and development priorities.

WPF

XAML

WPF

XAML

Xamarin

Xamarin.Forms

JavaScript

.NET

.NET Framework

.NET MAUI

Freelance Full-Stack Software Developer & Mentor

Self-Employed

2018-05-01-Present

• .NET UI Specialist, working primarily with WPF and .NET MAUI to modernize applications.
• Mentor and advisor for developers on C...

• .NET UI Specialist, working primarily with WPF and .NET MAUI to modernize applications.
• Mentor and advisor for developers on Codementor, Arc, and Upwork, specializing in C# and UI development.
• 100% 5-star review record from mentoring sessions and freelance projects.
• Extensive experience with C#, WPF, MAUI, Xamarin, and cross-platform app development.

WPF

Xamarin

WPF

Xamarin

.NET

.NET MAUI

Software Development Engineer

Rome2rio

2017-03-01-2018-01-01

Full-stack developer at travel search web startup with 10 million unique monthly visitors. Conceived, implemented and analysed A/B tests ...

Full-stack developer at travel search web startup with 10 million unique monthly visitors. Conceived, implemented and analysed A/B tests to optimise user experience, revenue and user acquisition, including one experiment that resulted in doubling of hotel revenue. Responsible for all hotels-related features, experiments and partners. Overhauled A/B testing framework and analysis tools. Implemented new features across entire stack: backend logic, communication layer, UI components and styling, data and configuration, configuration management. Shared experimentation results, hotel performance updates and project updates with team via presentations and blog posts.

HTML/CSS

Data Science

JavaScript

HTML/CSS

Data Science

JavaScript

ASP.NET