I applied through a recruiter. The process took 4 weeks. I interviewed at Jet (Hoboken, NJ) in Feb 2016
Interview
Recruiter reached out to me on LinkedIn. Had an initial HR phone screen, then two live coding exercises. They weren't too hard, tested some basic string manipulation, binary search. Also included CS general knowledge questions like the difference between a process and a thread, value types vs reference types, etc.
I was then brought in for onsite interviews. I probably had 5 or 6, although one of them was just an "HR" type interview. Everyone was very friendly, and the offices are pretty amazing. No crazy brain teasers, just coding and system design the whole way through. I got asked to write something imperatively and then recursively a few times, presumably because of their use of F#. Re: the system design questions, it was mostly of the form "design a naive system to do a thing. Now what happens when your data gets bigger. How do you scale?" I was also asked about data races, concurrency vs. parallelism, etc. The system is a whole bunch of distributed microservices with event sourcing used in varying degrees throughout, so it was useful to know about that sort of thing.
Interview questions [1]
Question 1
Design a URL shortener. What are some of the design considerations? How to make it scale with lots of data?
I applied online. I interviewed at Jet in Nov 2020
Interview
Technical and HR - Technical round covered the aspects of the distributed and event driven architecture coupled with retail knowledge use cases. Grilled on the resume. No coding questions. Only the problem solving questions.
Interview questions [1]
Question 1
Design the retail system through the micro services using the event driven architecture?
I applied online. The process took 3 months. I interviewed at Jet (Dublín, Dublín) in Jan 2020
Interview
Stage 1:
Telephonic Interview with HR asking about salary expectations, experience
Stage 2:
Telephonic technical interview asking me about API's, Automation coding examples
Stage 3:
On site(Dublin):
Duration: 3 hours
Round 1: Interviewer asking questions from my CV, projects, Machine learning concepts, white board coding along with time complexity and improvement.
Round 2: Video interview with US engineers about automation background, Agile process, security and API's
Round 3: Design solution interview with product manager. Designed solution in whiteboard. Fairly straightforward and questions about future expectations and goals
Interview questions [1]
Question 1
How will I use Machine Learning and image recognition to automate swipes in tinder based on preferences/looks?
I applied through college or university. The process took 3 months. I interviewed at Jet
Interview
Applied online. Got an invitation to the coding challenge a month later. Then got an invitation to a technical phone interview. The interviewer is friendly and willing to give hints. I didn’t think I did great because I apparently screwed up some stuff. They still let me pass and send me an email to schedule the final round interview with a team manager. We talked about a lot of non-technical things. The conversation was pleasant. Got a call a few days later and accepted the offer. The whole process took me 4 months and I wish it could be faster.