I applied through a recruiter. The process took 2 weeks. I interviewed at The Trade Desk (London, England) in Nov 2020
Interview
First stage was a chat with the hiring manager to discuss the role in a bit more detail. The next stage was an online phone screen with CodeSignal. The two major problems I had with the phone screen was that it uses proctoring so they monitor your webcam and your screen and also it gives you 4 questions in just an hour. It wouldn't be an issue if they were vaguely interesting questions but they were such tedious string manipulation type questions that I just didn't have the willpower to continue through with them all. The last questions looked more interesting but in the example they only told you the counts of the subarrays they were looking for but without telling you what those subarrays looked like, making it virtually impossible to see how the count of subarrays should be derived.
Call with recruiter, hiring manager, then schedule 4 technical rounds in the same week, 2 days after last technical section offer is released. Recruiter explained the process and reason behind each section very well, so I can expect what will happen and how I can prepare. Instructions within the round are very clear, interviewers are helpful and collaborative, so even the questions are not that easy the process is actually quite enjoyable and I feel respected. The process is very efficient, from they receive my application to offer accepted takes around a month
Interview questions [1]
Question 1
problem solving questions that might not need to execute the code but need to explain, need to debug an existing codebase, a Leetcode medium algo question, system design question
I applied online. I interviewed at The Trade Desk (Singapore) in Feb 2026
Interview
1. Applied Online.
2. Received/Completed Hackerrank Online Assessment.
3. Recruiter call about the role, salary expectations and leveling -- expecting next technical interview
4. One week later recruiter reached out that the role has been filled.
I applied online. The process took 2 months. I interviewed at The Trade Desk in Sep 2025
Interview
Online Assessment, followed by a Hiring Manager interview that was System Design + Behavioral. Didn't pass that stage, was not given a reason, but I assume it was the system design portion. Next stage would have been a loop (2 coding + 1 system design).