Matthias Keiser

I'm a software consultant from Switzerland. I have many years of experience in building quality software for iOS, OS X, POSIX, and the web. Since 2014 I work for SkilRoute as Chief Product Officer.
I like working for start ups. I like to fulfill the needs of my clients, but if I think you're wrong, I'll tell you. I'm a VLC Media Player contributor.

What people say about me

“Matthias has terrific work ethic and pours his heart into the work he undertakes. He has almost always over-delivered on his promise. Within the first few interactions and short time working with him, I came to completely trust his work and commitment.I look forward to working with him as much as I can.”

- Raghav Badinger, CEO SkilRoute.

“Matthias is a great coder and a great communicator. An absolute pleasure to work with. Really absorbed the spec and had great suggestions. Awesome iOS coder. Highly recommended!”

- Daniel Swirsky, AlphaPatent Associates Ltd.

What I recently worked on

SkilRoute video player

I developed the SkilRoute video player for both iOS and OS X, which shows up to four video streams simultaneously and allows you to life resize the individual streams. More info is available at the at the SkilRoute website.

Soon to be available on the AppStore.

SkilRoute video recorder

I also developed the SkilCapture video recorder and video editor for OS X. It is able to simultaneously record up to four videos from connected USB cameras or nearby iOS devices running a companion app. It is also a multi track video editor which is used to produce the videos for SkilRoute.

Soon to be available on the AppStore.


airfy beacon is a home automation app that uses Apples iBeacon technology to control the environment, for example Phillips Hue® lights. It's available on the AppStore.


Sonja is a unique music education app. It lets you read, write, record, and edit music easily, and you don't have to know music theory or notation. It's available on the AppStore.

Open Source

I contribute to the VLC media player. I'm the author of the CoreAudio demuxer module. I also contributed a series of patches that implement the correct handling of rotated videos (as produced by i.e. iPhones), which was rather involved - it was the most requested feature for 5+ years and had an open €2000 bounty for all these years. It was meantioned as the most important feature at VLC 2.2 presentation at FOSDEM15 (video).

I released a small iOS component that implements a tab view as seen in Mobile Safari. It is very flexible and uses an intuitive API thats inspired by iOS' UITableViewSource. It's available on GitHub and CocoaPods.


Matthias Keiser