You are not alone, having lived in Brooklyn in Orthodox areas, I have encountered some ridiculous racism from the orthodox community. Frankly even a trip to Costco in Brooklyn will give you a huge amount of perspective on how many view non-orthodox jews as "Others" and "Non-People".
That said, I also worked with the Safardic Jewish community doing tech in the garment industry and as the token gentile I was loved on and respected for my work.
Like every culture there is a broad spectrum, but if the Orthodox jews of NYC are anything to go on, I am seriously questioning why they are choosing to live here.