The interview process for a Software Engineer I at The Trade Desk is designed to assess a candidate's foundational technical skills, problem-solving abilities, and cultural fit within the company. It typically involves multiple rounds, starting with an HR screening, followed by technical interviews focusing on data structures, algorithms, and coding proficiency, and concluding with a behavioral and system design interview to evaluate broader engineering thinking and collaboration skills.
Rounds·4
Timeline·~7d
Experience·0 - 2 yrs
Comp band·US$85000 - US$110000
Interview time·195 min
Evaluation
Preparation
Tips
Study plan
Fig · Study plan — 05 phases
01 / 05Phase 01 of 05
Weeks 1-2: Data Structures & Basic Algorithms. Practice implementation and problem-solving.
Weeks 1-2: Focus on core data structures (Arrays, Linked Lists, Stacks, Queues, Trees, Graphs, Hash Maps) and their common operations. Practice implementing them and solving problems related to their usage. Cover basic algorithms like sorting (Merge Sort, Quick Sort) and searching (Binary Search).
Phase 02 of 05
Weeks 3-4: Advanced Algorithms. Focus on DP, recursion, greedy, graph traversal. Analyze complexity.
Weeks 3-4: Dive deeper into algorithms, including dynamic programming, recursion, greedy algorithms, and graph traversal (BFS, DFS). Work on medium-difficulty problems on platforms like LeetCode, focusing on time and space complexity analysis.
Phase 03 of 05
Week 5: System Design Basics. Scalability, caching, databases, APIs. Design simple systems.
Week 5: Begin exploring system design concepts. Understand principles of scalability, load balancing, caching, databases (SQL vs. NoSQL), and API design. Practice designing simple systems like a URL shortener or a Twitter feed.
Phase 04 of 05
Week 6: Behavioral Preparation. STAR method, company values, teamwork, problem-solving.
Week 6: Focus on behavioral preparation. Prepare STAR method answers for common questions related to teamwork, problem-solving, leadership, and handling failure. Research The Trade Desk's values and culture.
Phase 05 of 05
Week 7: Mock Interviews & Final Review. Timed coding, project explanations, system design refinement.
Week 7: Mock interviews and final review. Practice coding problems under timed conditions. Refine explanations of past projects and system design concepts. Review any weak areas identified during practice.
Questions
Locations
Fig · Regions — 02 locations
01 / 02Location
Interview focus
Common questions
Tips
Location
Interview focus
Common questions
Tips
Rounds
Expand a step for evaluation criteria, sample questions, and prep notes.
HR Screening · 30 min · Recruiter/HR
This initial screening call with an HR representative or recruiter is designed to assess your overall fit for the role and The Trade Desk. They will discuss your resume, career aspirations, salary expectations, and availability. It's also an opportunity for you to learn more about the company culture and the specifics of the role.
What they look for
Evaluation
Sample questions
Tell me about yourself and your background.
Why are you interested in The Trade Desk?
What are your salary expectations?
What are your strengths and weaknesses?
Prep for this round
Common rejection reasons
Technical Interview (Coding) · 60 min · Software Engineer
This round focuses on your core programming skills. You will be asked to solve one or two coding problems, typically involving data structures and algorithms. The interviewer will assess your ability to write clean, efficient, and correct code, as well as your approach to problem-solving and your understanding of time and space complexity.
What they look for
Evaluation
Sample questions
Given an array of integers, return indices of the two numbers such that they add up to a specific target.
Implement a function to check if a binary tree is a valid Binary Search Tree.
Find the kth smallest element in a sorted matrix.
Prep for this round
Common rejection reasons
Technical Interview (System Design) · 60 min · Senior Software Engineer / Engineering Manager
This round assesses your ability to design and think about larger-scale systems. You'll be given an open-ended problem (e.g., design a URL shortener, a social media feed, or a rate limiter) and expected to discuss various aspects of the design, including data models, APIs, scalability, and potential bottlenecks. The focus is on your thought process and ability to make reasoned design choices.
What they look for
Evaluation
Sample questions
Design a system like TinyURL.
Design a news feed system for a social media platform.
How would you design a rate limiter?
Prep for this round
Common rejection reasons
Behavioral Interview · 45 min · Engineering Manager / Senior Team Member
This interview focuses on your past experiences and how you handle various work situations. You'll be asked behavioral questions designed to understand your work style, how you collaborate with others, handle challenges, and learn from mistakes. Using the STAR method (Situation, Task, Action, Result) is highly recommended for structuring your answers.
What they look for
Evaluation
Sample questions
Tell me about a time you faced a significant technical challenge and how you overcame it.
Describe a situation where you had to work with a difficult colleague. How did you handle it?
Give an example of a time you failed. What did you learn from it?
How do you prioritize your work when you have multiple competing deadlines?
Prep for this round
Common rejection reasons
DSA
Frequently reported on The Trade Desk loops
Other guides
