I applied through a recruiter. The process took 3 months. I interviewed at bitFlyer (Tokyo) in Feb 2017
Interview
Multiple interviews over several months, including a session with a panel of existing employees. Final interview was with CEO and CTO. Informal process which went thoroughly into the suitability.
Interview questions [1]
Question 1
Various questions about background and interests. Puzzles (technical and non-technical).
I applied through a recruiter. I interviewed at bitFlyer (Tokyo) in Jan 2021
Interview
I was actually contacted by a recruiter about a position in BitFlyer. Initially it was said just to be a Software engineer position, but as it was a crypto currency company the work would include blockchain concepts.
But at the interview, (actually I didn't get to the interview, just a technical test), the test was all about blockchain. Even if you were the best software engineer in the technology you were applying for, it was impossible to get anything done without knowing Blockchain concepts very well.
Interview questions [1]
Question 1
The test asked to calculate the Merkle root (Bitcoin), with functions for generating proof and verifying proof.
I applied online. The process took 3 weeks. I interviewed at bitFlyer in Jan 2019
Interview
They have been giving the same old coding test (0/1 knapsack) for years, which I believe makes no sense at all. Then a technical interview by a 2-member panel about the basics. This was followed by a HR interview. They rushed through the interview process since I told them I wanted a conclusion soon. The next round was a mere formality since the interviewer hardly asked any detailed questions. It was pretty clear they did not wish to proceed. It would have been more respectful to just cancel the interview.
Well, I had a hunch since all 5 reviews before me said the same thing ;)
Interview questions [1]
Question 1
0/1 Knapsack, OOPS concepts, Java, data structures
I applied online. The process took 1 week. I interviewed at bitFlyer in July 2018
Interview
There was a laughably easy coding test, but they fail most people for unknown reasons. Clearly they're fishing for other information and trying to select candidates based on some other criteria. Really awkward experience.
Interview questions [1]
Question 1
Please solve the highest value that can fit under a certain byte limit given this sample data.