I'm looking for a FREE dataset of connections beetwen programming(business) skills (e.g. html, python, ios, data structure, unix, api, business development, teamwork) and programming(business) titles (e.g. Business Analyst, Software Architect, Data Engineer, Front End Developer, iOS Developer, Embedded Developer, Engineering Manager).
I'm going to do machine learning on that data and after that machine will know, for example, the connection beetwen the role "iOS Developer" and the skill "css" is very weak, say 10%, or the connection beetwen the role "Front-end developer" and the skill "html" is very strong, say 97%.
So all I need is a data which contains such connections. Any suggestions?