I applied through a staffing agency. The process took 2 weeks. I interviewed at Chase (London, England) in Oct 2022
Interview
The first interview stage was way too easy, almost feeling wrong. They ask you to prepare for 90 minutes for a take home exercise, but it barely took me 5 minutes. The second stage had a pair programming exercise which was a bit more challenging, asking to use trees or recursion.
The third stage was again some questions and some pair programming exercise. The first question was how a ConcurrentHashMap works internally, very specific and not everyone knows that, but ok. Moved to questions as time complexity inside different Maps. And finally something about GC's. The exercise part was one of those terrible online tools experience. No debug, no running the code, no auto complete. An algorithmic question, full of edge cases, with some 20 minutes to solve it. Lastly, a question about how to turn a list immutable.
Overall, two first stages too easy, third stage not such a good interview experience.
Interview questions [1]
Question 1
Details of ConcurrentHashMap
Details of GC
Immutability
Easy because the interview was a phone call screening then an oa that took about 2 hours to complete then i spoke to four senior software engineers and spoke to them about behavioral and technical questions
I applied online. The process took 4 weeks. I interviewed at Chase (San Diego, CA) in Sept 2025
Interview
For the technical recruiter round, it was a phone call (called me out of the blue I wasn't ever prepared) but it went suprisingly well. It was more like an informative call. For the technical round, it was an interview with the principal engineer, asked me a lot of high performance computing related questions (since that was what I was interviewing for). I should have prepared better, I tried to cover in breadth, instead I should have just focused on what I actually had experience in.
Interview questions [1]
Question 1
HPC details of my project like the number of parameters, size of the model I was training on the HPC etc
alright, pretty hard, definitely something that required a lot of critical thinking and system design. definitely would not doing this interview again though the interviewer was super hard.alright, pretty hard, definitely something that required a lot of critical thinking and system design. definitely would not doing this interview again though the interviewer was super hard.