Arista Network | Interview Experience | 6+ year of experience

I recently completed my first-round interview with Arista Network. The interview was conducted by a principal engineer and primarily focused on two coding questions. I was presented with the problem Remove Linked List Elements, which I successfully solved within 10 minutes, achieving an optimal O(N) time complexity and O(1) space optimization.

The second question I tackled was Remove All Occurrences of a Substring. For this problem, I demonstrated two distinct approaches: one utilizing C++ Standard Template Library (STL) features and another purely iterative method. Both solutions maintained an overall time complexity of O(N). Throughout the coding session, I made sure to run all test cases provided by the interviewer and thoroughly discussed various corner cases for both problems.

Following the technical segment, we transitioned into a positive discussion regarding my current project. It's worth noting that I was not feeling well on the day of the interview, yet I still joined the call and believe I effectively completed all the Data Structures and Algorithms problems.

However, the feedback I subsequently received from HR indicated that Arista Network was not inclined to move forward with my application. They stated that I was supposedly unable to solve the second question and struggled with basic problem-solving skills. I find this feedback entirely baseless and believe the interviewer may not have fully comprehended my C++ code. As a candidate, I put significant effort into preparing for interviews, and such inaccurate assessments can be incredibly disheartening.