Pros
First and foremost, the people and the culture. I feel at home and am comfortable around my colleagues and managers including the CXOs. I love how everyone expresses their ideas and concerns freely and how things are dealt with in a rational manner. Everyone has a say. No inhibitions! Second, excellent exposure to business analytics, cutting edge technologies and client executives which comes bundled with the role of a consultant. (imho, now is the time to get into data science & being a consultant means much needed exposure to many successful companies) Third, nice perks to make your life easy. Despite being a startup, you get a good annual salary, full benefits like 401k, insurance, travel reimbursements, conferences, offsite training and bonuses etc. Last but not the least, the immigration help and the legal team. My mangers, HR and lawyers worked with me meticulously on my complicated visa case and delivered!
Cons
All the cons that come with working as a consultant for a start up. The role is very distinct and is not for everyone. You need to balance technical skills with people skills, take initiative and be proactive all the time, be a jack of all trades, work with offshore teams, be very adaptable and it can get overwhelming at times.