man i love this genre...jazzy tech metal...i can reccomend some shit
cynic
spastic ink*
blotted science*
continiou renacer*
copofrago
canvas solaris*-pretty tech and has a little jazz influience
sleep terror*
ephel duath
* indicated instrumental band
thats all i can think of right now...hope that helps
Pestilence
Alarum (kinda unknown but they are a lot like cynic/Atheist)
Nocturnus
Augury
Lykathea Aflame (A bit brutal though)
Blotted Science (instrumental)
Aghora
Not all might sound jazzy(technical for sure) but it's all good stuff.
EDIT: And ya, Both Cynic and Atheist are coming up with new material as well I cant wait!
The thing about Unquestionable Presence is that there's nothing really like it. It's some sort of bizarre fluke that shouldn't really have worked but somehow did. No other tech-death comes close to sounding like that album imo.