A type rating is of no use without a basic licence.
You need 3-5 years experience of working on a/c in a 145 organisation before you can hold a licence. The experience requirement is determined to by how you gain your licence.
The caa website has documents called ELGD which tells you the requirements for gaining a licence.
You've either wasted a number of years at uni or need to look at what options your qualifications will open up for you, you would have to start again if you now decide you want to become an a/c certifier.