Applied and received an email mentioning a technical challenge and request for references. Expectation is up to 10hrs of time for this challenge but don't expect any feedback if it doesn't live up to their "standards", which are unknown. A courtesy email was sent after a follow-up (which is appreciated) explaining they will not be moving forward with the application but can't give any feedback due to "volume of applications received". Very disappointing since there's expectation and standards set for candidates but not much for the employer.