Here is a list of some of the red flags I'd advise to consider:
RED FLAG #1: all the relatives/connections to upper management in roles throughout the company (who get away with egregious HR violations.)
Naturally, insecure, incompetent nepo babies and college buddies don't make for a successfully ran business. This leads to employees that did not get their positions through connections to be stuck cleaning up messes they didn't make and doing work they don't get proper credit for. Burn out is rampant here.
RED FLAG #2: They pressure employees to sing their praises, and punish those who give constructive criticism.
RED FLAG #3: They push unhealthy work/life expectations (of those not in the nepo/connected group.)
Airrosti pressures employees to leave good reviews and vote as a "great place to work" every chance they get, but unless you are connected to the right people, you will be used up and spit out. (I'm sure they'll either directly or indirectly pressure employees to run and post positive reviews after this honest one to try and counter.)
They are sanctimonious and retaliate on anyone that questions their motives or points out errors. They tell employees that they want honest feedback, but it's a trap!
RED FLAG #4: They are dishonest about who they place in positions of leadership, omitting including SOME department heads from their website.
RED FLAG #5: They dismiss an entire religion.
They call their employees "Airrostifarians," a play on "Rastafarian." A quick google search will tell you that Rasta is A RELION BORN OF OPPRESSION AND SLAVERY. What makes this worse is that this has been addressed and advised to change multiple times by employees concerned with this practice. Upper management was not concerned with learning better and doing better, rather dug in their heels. They finally agreed to only use the term internally (as to avoid a potential PR issue), but they do not do a great job of keeping it out of public facing places (one example is its use in the front office of their headquarters.)
In summary: They are not what they proclaim to be. Unless you got offered an overpaid role that you are under qualified for here due to some connection, don't walk, RUN!