I work for Kony Labs Pvt Ltd. as a Hybrid Mobile Application developer.

I use wide variety of Programming languages and tools such as

1. Kony Visualizer 7.0 and above version which helps to develop mobile applications faster than any other hybrid application programming tools.
2. ECMA6 as the Kony Visualizer Supports Javascript right from the beginning.
3. Kony Mobile Fabric to deploy application on their cloud based server. Its beautiful as it helps the developer to focus on the services integration and it could SOAP/Restful or ASAP or XML or etc., . The developer can test the services then and there itself.
4. Android Studio to write FFI(Foreign Functional Interfaces) to communicate at core native level while programming at hybrid level.
5. Swift to write FF, Apple Watch Application and etc.,
6. Restful and SOAP webservices.