The training will help the professional beer taster go far beyond determining whether or not they like a beer. They will learn to identify subtle nuances. That'll be important because the tasters are working with researchers at the university's Sensory Science Centre to answer questions about "how the aroma and flavor changes as the alcohol content is altered and time passes," among many other topics.
The project is sponsored by breweries, maltsters, and hop producers who will use the research to play with new ideas and improve their products. So, you'd be doing the whole world a service by drinking beer. You'd be a hero to your people.
It's a long-term project, expected to last three-to-four years, and the job is only a couple hours a week. So, it's probably not a job you're moving to Nottingham over. On the other hand, you would be getting paid to drink beer, so maybe it's worth it.