I applied online. I interviewed at The Trade Desk (London, England) in Feb 2018
Interview
Take-home project. Write an N-way set-associative cache, then sort of a code review process. The guy who reviewed my code had very little clue as to what n-way set-associative cache is, why it would be used, and when. I got it after his first feedback, and I didn't expect it to go nicely. In the end he even seemed to take offence at me explaining him the obvious. I was disappointed with the level. Maybe, I was unlucky. Just wasted a day of my life.
Interview questions [1]
Question 1
Write an N-way set-associative cache in C#, Java, or python
60 mins - Algorithm questions. it was generally leetcode med level algorithm questions and they asked 2 questions. They were kind of rushing the interview and didn't seem like they cared about the interview.
I applied through a recruiter. I interviewed at The Trade Desk
Interview
Initial Screen: A 30-minute phone call with a recruiter to discuss resume, experience, and interest in The Trade Desk.
Technical Assessment/Case Study:
Engineering: A 90-minute online assessment (often via CodeSignal) simulating real-world projects, focusing on algorithms and data structures.
Commercial/Trading: A take-home case study or data presentation prepared in advance and presented to the team.
Panel/On-Site Interviews: Multiple (4-5) 30-minute, back-to-back, or virtual interviews with team members and hiring managers. Questions focus on past experiences, behavioral scenarios, and problem-solving.
Final Presentation/Cultural Fit: A final, often in-person, interview focused on ensuring candidates align with the company's culture and possess the confidence and skills needed for role
Interview questions [1]
Question 1
Banking System Design: A multi-level challenge where you start by implementing basic deposits/withdrawals and scale to "Top K" transaction ranking, scheduled payments, and merging account histories.
I applied online. I interviewed at The Trade Desk (Sydney) in Oct 2025
Interview
I applied for a SDE position in Sydney AU. Online accessed + recruiter call + 4 rounds onsite rounds. The recruiter was super efficient and professional, some interviewers were very professional and friendly, however, the hiring manager had astonishingly bad manners, he gave an ambiguous and topic and didn’t collaborate or specify what aspects to focus on, as I continued to seek clarification, he became visibly frustrated and started yelling. Would recommend the company to improve the mental maturity of this hiring manager from HK before allowing him to become an interviewer again. The hiring manager's terrible manner explains why the same job has been posted again and again on Linkedin but never been filled over the last 2 months.
