How difficult to get a job as bigdata administrator or developer



I have 15 years experience from 2001 to 2008 I worked as a maintenance engineer in steel and construction domains.From 2008 to till now iam working as industrial applications engineer,my job is to implement a production application in manufacturing sector in this job I learn about SQL (not in depth).As iam having Passion in IT. I was thinking to change my domain to a Pure IT.I enrolled in bigdata from BITS for PG in Bigdata Engineering course.Iam ready to start as a fresher.will I get job in future in Bigdata domain