4 years ago, the process was extremely thorough and inclusive of different cohorts in the interview process. A candidate would interview with a variety of teammates to help them get a sense for the candidates fit for the role and environment. This, to me, started the relationship that a new hire would have with their team; the person would essentially have a friendly face to reference post-interview and a step up in bonding with their new colleagues.
The process has changed. Different cohorts are not involved in the interview process. Instead people managers, engagement managers, and other high-level positions interview. This sometimes means that the candidate is interviewing with folks that have been disconnected from the position that a candidate is interviewing for. Or, worse, that person interviewing is so senior that they lack the same empathy that they may have once had for a new person in a lower role.
Anyone looking to interview with athena should do their homework differently. While knowing the company is important, successful candidates will understand the vision (not literally) and focus of athena and how the position he/she is seeking fits into the bigger picture.
Candidates should be prepared to paint a picture of themselves and help the interviewing team understand the who and why of his/her personality. Since culture is so very important to the company, it is not as important to prepare for answering the questions themselves but being able to articulate it in a way that supports your point of view.
Be professional regardless of the demeanor and approach of the person interviewing you. Many candidates have missed their opportunities by arrogantly assuming that a "great" interview was all that was needed. Those people often stopped selling themselves long before a final decision is made. Remember, hiring at athena is a collaborative process.
Lastly, don't talk about the "fun stuff" you've heard about from your friends who've worked at athena in your interviews. Share your interest for the work, culture, reputation...something. Yes, athena employees have been known to have a good time. That is true. Remember, however, that it is also after a lot of very busy, trying, frustrating days and nights. What you've heard and seen may be the equivalent of kicking off your shoes after a long days/weeks/years work.