"since as a" is not a correct or usable phrase in written English.
It does not make sense on its own. You cannot use it in this form. If you meant to use it as a transition phrase, it would need to be reworded. For example: "Since I am a teacher, I understand the challenges of teaching."
The cross was likewise considered the "dread of the demons," since as a victory sign it struck terror into the hitherto ruling demonic powers of the world.
Sometimes I think of my whole career since as a kind of penance, still trying to wend my way through the philosophical stage that Noam had set.
Go ahead and take that great deal on a "fixer-upper," since as a young investor you may qualify for substantial home equity lines of credit.
This is what I've tried to practice ever since, as a cook and restaurateur.
I was eager to visit since, as a boy, I had been entranced by stories of this magical mountain.
The new show featured plenty of foul language since, as a satellite show, it falls outside the F.C.C.'s purview.
She could not find a logical reason to decline, since, as a good ecumenical Episcopalian, she had prayed with Sunnis and Sufi Muslims.
It is 16 years since, as a far-left youngish Socialist, he (jokingly?) rattled the railings of the federal chancellery in Bonn shouting, "Let me in".
I'VE had a lingering hesitation about getting to know Filipino food since, as a child, I read an article about papaitan, a goat offal stew made with bile.
"This new funding of $1.5 million would have been duplicative, since, as a state, we already fund sexual violence programs.
He's seen shooting guns in the episode and that's a problem since, as a convicted felon, he's not allowed by law to own or use a firearm.
