As far as company culture goes it’s work casual no one really has ever commented on the dress code. However a real life anecdote during my interview I was so nervous meeting with Mr. Soiffer (my now supervisor) that I wore:
black dress shoes,
with black dress pants
held up by black straps for pants,
over a black shirt
with a grey Tie on.
I must’ve looked like a Gothic clerk Simon a colleague who showed me around the office that day told me I looked great which was a great relief. But ever since then I just dressed work casual.