Freelance Software Development

25+ years professional expert experience with (but not limited to):

- Software architecture and design;
- Cross platform development (Windows, Linux, OS X);
- High performance C++ trading systems;
- Rock solid C# backend and mobile solutions;
- Low-level Windows programming;
- Full-stack JavaScript web development;
- iOS and Android apps with Xamarin and React Native;
- DevOps with Docker;

Write Sebastian at sebbarg@gmail.com for more information.

Here is his resume and here is his LinkedIn profile.