I applied online. The process took 4 weeks. I interviewed at The Trade Desk (London, England)
Interview
1) The first conversation with the recruiter. 2) A one-hour session of live coding to improve an existing codebase. 3) A one-hour interview focused on system design. 4) A one-hour interview assessing problem-solving skills, covering both system design and coding. 5) A one-hour coding interview centered around algorithmic questions.
Interview questions [1]
Question 1
The initial coding task was around refactoring and making a caching library thread safe. The recruiter sent me a file in advance to have a look around LRU and associative caching which was useful. In the second interview I was asked to design an RTB stack. The third interview was around designing an elevator system and write the code. And the last interview was around parsing JSON.
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 Sept 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).
I interviewed at The Trade Desk (San Francisco, CA)
Interview
- recruiter
- hiring manager chat about exp
- coding screen
- onsite
Overall pretty standard interview and good experience hence why i joined. interviews were collaborative and practical rather than obscure algorithms
