Scale Engineer

Software Engineer

Software EngineerSoftware Engineer IIMedium to Hard

The Trade Desk is looking for a Software Engineer II to join our dynamic team. This role involves designing, developing, and maintaining scalable software solutions that power our advertising platform. You will collaborate with cross-functional teams to deliver high-quality products and contribute to the continuous improvement of our systems.

Rounds·3

Timeline·~10d

Experience·2 - 5 yrs

Comp band·US$110000 - US$150000

Interview time·150 min

Evaluation

What they measure.

  • Problem-solving skills
  • Algorithmic thinking
  • Data structure knowledge
  • Coding proficiency (cleanliness, efficiency, correctness)
  • System design capabilities
  • Scalability and performance considerations
  • Communication skills
  • Teamwork and collaboration
  • Adaptability and learning agility
  • Behavioral fit with company culture

Preparation

How to prepare.

Tips

  1. Review fundamental data structures and algorithms (arrays, linked lists, trees, graphs, hash maps, heaps).
  2. Practice coding problems on platforms like LeetCode, HackerRank, or AlgoExpert, focusing on medium to hard difficulty.
  3. Study system design principles, including scalability, availability, consistency, and common design patterns (e.g., load balancing, caching, message queues).
  4. Understand distributed systems concepts and trade-offs.
  5. Prepare to discuss your past projects in detail, focusing on your contributions, challenges, and learnings.
  6. Research The Trade Desk's business and technology stack to understand the context of the role.
  7. Prepare STAR method (Situation, Task, Action, Result) answers for common behavioral questions.
  8. Practice explaining your thought process clearly and concisely, especially for coding and system design problems.

Study plan

Fig · Study plan — 04 phases

01 / 04
01

Phase 01 of 04

Data Structures and Algorithms

Weeks 1-2: Data Structures & Algorithms fundamentals. Practice 2-3 problems/day.

Weeks 1-2: Focus on core data structures and algorithms. Practice problems related to arrays, strings, linked lists, trees, and hash maps. Understand time and space complexity analysis. Aim for 2-3 coding problems per day.

Questions

Commonly asked.

  • Tell me about yourself.
  • Describe a challenging project you worked on.
  • How do you handle tight deadlines?
  • What are your strengths and weaknesses?
  • Design a system for [specific problem, e.g., a real-time notification service].
  • Write a function to [specific coding task, e.g., find the kth largest element in an array].
  • Explain the difference between TCP and UDP.
  • How would you optimize the performance of a web application?
  • What is your experience with cloud platforms?
  • How do you approach code reviews?
  • Tell me about a time you disagreed with a teammate.
  • Why are you interested in The Trade Desk?

Locations

Regional differences.

Fig · Regions — 03 locations

01 / 03

Location

San Francisco, CA

Interview focus

System Design: Emphasis on distributed systems, scalability, and fault tolerance.Problem-Solving: Ability to break down complex problems and propose efficient solutions.Coding Proficiency: Clean, efficient, and well-tested code.Behavioral: Teamwork, communication, and adaptability.

Common questions

  • How would you design a system to handle real-time bidding for ad impressions?
  • Describe a challenging technical problem you solved and how you approached it.
  • Explain the trade-offs between different database technologies for a high-throughput system.
  • How do you ensure the scalability and reliability of your code?
  • What are your thoughts on microservices vs. monolithic architectures in the context of ad tech?

Tips

  • For San Francisco: Be prepared for in-depth system design questions related to large-scale data processing and real-time systems.
  • For New York: Expect a strong focus on algorithmic problem-solving and data structures, with an emphasis on practical application.
  • For Remote: Demonstrate strong communication skills and the ability to articulate your thought process clearly, as collaboration might be more distributed.

Rounds

Round-by-round.

Expand a step for evaluation criteria, sample questions, and prep notes.

DSA

Coding questions at The Trade Desk.

Frequently reported on The Trade Desk loops

View all at The Trade Desk

Other guides

More at The Trade Desk.