Scale Engineer

Software Engineer

Software EngineerSenior SWEHard

Moloco's Senior Software Engineer interview process is designed to assess a candidate's technical expertise, problem-solving abilities, system design skills, and cultural fit. The process typically involves multiple rounds, including technical interviews, a system design interview, and a behavioral/managerial interview.

Rounds·3

Timeline·~7d

Experience·5 - 10 yrs

Comp band·US$150000 - US$200000

Interview time·150 min

Evaluation

What they measure.

  • Technical Proficiency (Data Structures, Algorithms, System Design)
  • Problem-Solving Skills
  • Communication Skills
  • Collaboration and Teamwork
  • Leadership Potential
  • Cultural Fit

Preparation

How to prepare.

Tips

  1. Review fundamental computer science concepts: data structures, algorithms, operating systems, databases, and networking.
  2. Practice coding problems extensively, focusing on medium to hard difficulty. Pay attention to time and space complexity.
  3. Study system design principles for scalable and distributed systems. Understand concepts like load balancing, caching, databases, message queues, and microservices.
  4. Prepare to discuss your past projects in detail, highlighting your contributions, challenges, and learnings.
  5. Research Moloco's products, services, and company culture. Understand their business model and the problems they solve.
  6. Prepare for behavioral questions by using the STAR method (Situation, Task, Action, Result) to structure your answers.
  7. Practice explaining complex technical concepts clearly and concisely.
  8. Prepare thoughtful questions to ask the interviewers about the role, team, and company.

Study plan

Fig · Study plan — 04 phases

01 / 04
01

Phase 01 of 04

Data Structures and Algorithms

Weeks 1-2: DSA fundamentals and practice (2-3 problems/day).

Weeks 1-2: Focus on Data Structures and Algorithms. Cover arrays, linked lists, trees, graphs, hash tables, heaps, sorting, searching, dynamic programming, and greedy algorithms. Practice problems on LeetCode and HackerRank, aiming for 2-3 problems per day.

Questions

Commonly asked.

  • Design a URL shortening service like TinyURL.
  • How would you design a system to count unique visitors to a website in real-time?
  • Explain the difference between TCP and UDP.
  • What is a deadlock, and how can it be prevented?
  • Describe a situation where you had to deal with a difficult stakeholder. How did you handle it?
  • Tell me about a time you failed. What did you learn from it?
  • How do you approach debugging a complex issue in a distributed system?
  • What are the trade-offs of using a microservices architecture compared to a monolith?
  • Design a rate limiter for an API.
  • How would you scale a social media feed?

Locations

Regional differences.

Fig · Regions — 02 locations

01 / 02

Location

USA

Interview focus

Deep understanding of distributed systems and scalability.Proficiency in cloud-native technologies.Experience with large-scale data processing.Strong problem-solving and debugging skills.Ability to mentor junior engineers.

Common questions

  • How would you design a distributed caching system for a high-traffic website?
  • Discuss a challenging technical problem you solved in a previous role.
  • Explain the trade-offs between different database technologies for a specific use case.
  • How do you ensure scalability and reliability in your code?
  • Describe your experience with cloud platforms (AWS, GCP, Azure).

Tips

  • Familiarize yourself with Moloco's tech stack and products.
  • Prepare to discuss your contributions to open-source projects or significant personal projects.
  • Be ready to articulate your thought process clearly and concisely.
  • Research common challenges faced by companies in the ad-tech industry.
  • Highlight instances where you've led technical initiatives or mentored others.

Rounds

Round-by-round.

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

DSA

Coding questions at Moloco.

Frequently reported on Moloco loops

View all at Moloco

Other guides

More at Moloco.