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Tech challenge, in a pair programming format, that starts with simple problems. As you solve them, you progress to more complex data structures and algorithms questions. Your solutions are discussed considering time and memory complexity, as well as

It's a long process, but it is very clear. It starts with one Skype interview about general things, followed by a second Skype interview about coding. If everything goes well, the next stage is an on-site set of interviews (four in total) covering

The process takes about 3 months. After the online interview, they contacted me 3 days later. After the onsite interview, they took 1 month to respond. At first, I had a problem because they tried to contact me on a very old email I had (msn, XD).