There are jobs, but probably, in terms of volume, it's 0.01% of the volume of backend or frontend jobs. Which in itself might not be bad(as there's less graphics programmers to fill these positions as well), but they aren't as geographically distributed as more mundane jobs, which limits your living options.

Also, at least in Europe, they pay much less than doing backend contracts for big corporations with plenty of money. For example, senior graphics dev in a CAD company in UK will make maybe 50-60% of backend contractor's salary.