Senior C# .NET Developer

We're looking for a Senior C# .NET web developer. For an existing startup, the current founder is looking for an additional pair of hands (10-20 hours / week for now). The application architecture consists of a C# .NET (ASP.NET MVC) application, SQL database running on Azure. The mobile app consists of Xamarin forms.

This is an existing application, so looking for someone to implement enhancements, changes, etc.

Must-have:
- Senior (5+ years) experience in C# .NET development
- Experiended with SQL Server / Azure
- Near-fluent in English
- Values quality code, security, maintainability & performance
- Pragmatic and pro-active attitude, self-starter

Nice-to-have:
- Experience with Xamarin Forms and/or Javascript is appreciated!