You profile:
You need to know enough freeswitch. Languages possible to use for web UI:
1. Priority is Haskell (possible to use Frameworks) (without experimental libraries)
2. C/C++ (possible to use framework WT)
You are able to modify some code in freeswitch packages in C/C++. You need to know well nibble bill mod. You need to be able to make connection between PostgreSQL databases and clustering.
Task.
Before you accept project you will receive file with instructions and if you can do that then you can accept project.
1. You need to code our "sketch" algorythms and code only 2 USER's area web GUI and just 10 variables for Admin WEB UI. You NEED NOT to develop the design for that it must be just simple view with black and white webpage. May be you need to correct our "sketch" algorythms.
2. You need to write paypal/skrill payment gateway or you can use some ready payment gateways to modify it for us.
3. Finally it must be tested with Static and dynamic analysis and the compressed to bz archive with all skripts and configuration files for Centos 6.6.
You can not use this code in other projects for 2 years.
Project is up to 2 weeks.