Contacted by recruiter on LI for a contract position (remote). First round: self serve coding similar to leetcode (dynamic programming question). Second round: in-person coding using my language of choice (C++) on topics of sparse linear algebra and image processing. Perhaps, I am not used to this type of interviews, but I found it a bit hard to communicate and understand how my solution needs to be delivered and what are the given requirements; the interviewee seemed to be distracted throughout the whole time, obviously switching between the windows; that made it a bit difficult to fully focus. At the end I could not answer on how to further optimize my final solution; it was only 2 minutes left. Was ghosted by the recruited afterwards. Even an automated reply would be nicer.
Interview questions [1]
Question 1
Coding of sparse vectors operations; 2d convolution followed up by optimization questions (you need to know the underlying math for all and ready to think fast).
Took about a month altogether, which felt longer given the intensity of the process. Kicked off with a technical screening, followed by two rigorous coding interviews. The DSA question on binary tree vertical order traversal hit me hard at first, but then I recognized the prompt instantly — I had just worked through something similar on PracHub. The final round was focused on system design, and while I ended up receiving an offer, I ultimately declined it. Overall, a challenging experience that definitely sharpened my skills.
1 leetcode med, 1 leetcode hard. make sure you know your DSA and leetcode questions. I wasn't able to get an offer bc i didnt complete the second question. Got a reply 2 days later saying they would move on
Overall, the process took a little over two weeks, which felt a bit longer than I anticipated. After a quick screening, I went through two technical rounds focusing on coding and DSA concepts. One of the questions was a classic palindrome check; mid-way through, I realized it was something I had practiced on PracHub just days earlier. The final step was a casual behavioral interview. I was relieved to get an offer shortly after, which I happily accepted.
Interview questions [1]
Question 1
Given a string, determine if it is a valid palindrome considering only alphanumeric characters and ignoring case.