Detailed insights from real candidates who interviewed at top tech companies
I passed the DoorDash Code Craft round for a Midlevel SWE role. This round was a collaborative exercise focused on building a Payments Service for Dasher payout logic, where I implemented a working so...
A DashMart is a warehouse run by Doordash that houses items found in convenience stores, grocery stores, and restuarants. We have a city with open roads, blocked-off roads, and DashMarts. City Planners want you to identify how far a location is from it's closest DashMart. You can only travel over op...
During a DoorDash phone interview, the candidate was asked to solve a problem involving finding the distance from locations to the closest DashMart in a grid. The problem required navigating a grid wi...
Closest DashMartProblem StatementA DashMart is a warehouse run by DoorDash that houses items found in convenience stores, grocery stores, and restaurants. We have a city with open roads, blocked-off roads, and DashMarts.City planners want you to identify how far a location is from its closest DashMa...
Hi all, I had my phone screen recently with Doordash.Question: https://leetcode.com/problems/binary-tree-maximum-path-sum/description/He called leaf nodes "live nodes" and wanted the maximum sum of a path that starts and ends at a live node. I solved it but missed a corner case.I had to run my code ...
Modification of LRU cache. Alice, an engineer, notices that a database for dasher assignments is slowing down due to the number of dashers and entries in the database. She notices that recently assigned dashers are more likely to be looked up and would like to cache these dashers so that lookup is...
I interviewed for a Staff Software Engineer role at DoorDash in February 2024. My virtual onsite included coding rounds on problems like a twist on 'Swim in Rising Water', 'Max Path Sum with Leaf Node...
Phone screen: A slight twist on Swim in rising water. Virtual onsite: Round 1: Max path sum with leaf nodes only - I solved this iteratively, as I get confused while formulating recursive solutions. It was 2x the amount of code but I made it work and all test cases passed. A follow up was to evaluat...
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