Hi,
We have experts in Javascript who have developed apps in Appcelerator/Titanium (but are not Titanium certified). But I believe we can deliver outstanding quality and develop your app with clean, robust, efficient and modular code backed by an ideal architecture.
Please check reviews for quality of our work. You can engage us for a small duration to start with and if you are not satisfied with the output - we will not charge for it.
Looking forward,
Janak