Why don't you try to apply in Chipmixer Signature Campaign
https://bitcointalk.org/index.php?topic=1935179.0, it is a long term position if you are chosen to be the accepted applicants among others, I've also joined in that campaign and apparently
Darkstar_ haven't accepted anyone yet, who knows it is for you.
P.S There's a lot of forum member looking with the same term you are offering boltz and none of them get any offer except from zazarb and one other.
You can look at the overview of Signature Campaign in
Mitchell's Thread, and try to look for a different
Open Signature Campaign, albeit I don't know if there's a lot of Signature Campaign having a long term offer, except from Chipmixer, Bitblender, and FortuneJack.