Firstly, 20 min. call from QA director for background and position interest.
Followed 5 rounds of onsite interviews with 2 devs, QA director, CTO and product designer respectively.
In general, smart and nice people with a positive outlook on the product. CEO is very dedicated. Small team. Convenient location just next to Caltrain station. Work-from-home on Wednesdays. Flexible schedule.
QA director is very nice and experienced, very determined to utilize the latest testing technology to streamline the developing process.
Offer negotiation was initiated the next day after onsite interview. Declined before getting official offer due to personal commute issues (not everyone can afford living in the heart of silicon valley).
Very positive experience overall.