Soldato
go for the one that is most appealing, which I believe is the BBC one because you are considering it against a full time position on more money and more chance to progess.
Follow your heart
Follow your heart
R&D for the BBC is an incredibly fulfilling role, and is what sets them apart from other broadcasters. I say go for it.
you've not really given much information
you've said one job is better paid and 'senior' and the other job is not even perm, at the top of the pay band, uncertain prospects...
with all else being equal how is even a question?
I've done a lot of work with the BBC and know a number of people over in their IP/Networks department,
It's actually a very good place to work, not just in terms of the sorts of things they're doing - but in IP and Telecoms, it's generally seen as highly positive to have worked for a big media company such as the BBC/Sky/etc - so certainly a good move as far as career progression is concerned, there's a big future in it
If you're good at what you do - you could eventually land a good position at somewhere like Netflix or Amazon - and any of those roles is likely to blow anything else out the water, in terms of the job itself and the salary, (they pay enormous amounts)
Out of curiosity how would one get into these roles starting from scratch?