NextRoll Senior Big Data Engineer interview questions

I applied online and was promptly e-mailed by the talent manager. The process was then a ~30min phone screening by the talent manager, a ~45 min tech screen followed by a ~4.5 hour online 'offsite' which consisted of 4 tech ~1hr tech interviews focused on different areas, followed by a ~30min behavioural type interview with the hiring manager. Overall the process was extremely smooth, friendly, engaging and encouraging and all engineers/hiring managers I met were very professional in the way they conducted the interviews as was the talent manager. I ended up turning down the offer for personal reasons.