Two sigma I think is better than citadel for swe, but both are top tier names. TS is more tech focused and citadel is hybrid (though it depends on securities v HF for citadel)
Two Sigma by far. I used to be an HFT dev. It's not even close. Citadel is know for stress and job insecurity. Two Sigma is known for being full of super smart people and having an intellectual environment.
There’s nothing special about Citadel, it’s probably growing into a sweatshop. TS will look far more impressive.
Two sigma- heard really good reviews of the company
Just watch out for ligma.
Opportunities wise, Google would open more doors in the future. Although prestige wise both are equally good.