Software Engineer II
This interview process is designed to assess candidates for a Software Engineer II position at Reddit. It evaluates technical proficiency, problem-solving skills, system design capabilities, and cultural fit within the company.
3
~14 days
2 - 5 yrs
US$120000 - US$160000
150 min
Overall Evaluation Criteria
Technical Skills
System Design
Behavioral & Cultural Fit
Preparation Tips
Study Plan
Data Structures & Algorithms
Weeks 1-2: DSA Fundamentals (Arrays, Lists, Trees, Graphs, Hash Maps, Sorting, Searching, DP, Graph Traversal).
Weeks 1-2: Focus on core data structures (arrays, linked lists, trees, graphs, hash maps) and algorithms (sorting, searching, dynamic programming, graph traversal). Practice problems on platforms like LeetCode, HackerRank, and Cracking the Coding Interview.
System Design
Weeks 3-4: System Design (Databases, Caching, Load Balancing, Message Queues, Microservices, Distributed Systems).
Weeks 3-4: Dive into system design concepts. Study topics like database design, caching, load balancing, message queues, microservices, and distributed systems. Practice designing common systems like Twitter feed, URL shortener, or a chat application.
Behavioral Preparation
Week 5: Behavioral Prep (STAR Method, Teamwork, Problem-Solving, Leadership).
Week 5: Prepare for behavioral questions. Reflect on past experiences related to teamwork, problem-solving, leadership, and conflict resolution. Use the STAR method (Situation, Task, Action, Result) to structure your answers.
Company & Role Research
Week 6: Company Research & Question Preparation (Reddit's Tech, Products, Culture).
Week 6: Research Reddit's tech stack, products, and company culture. Understand their business model and recent news. Prepare questions to ask the interviewer about the role, team, and company.
Commonly Asked Questions
Location-Based Differences
San Francisco Bay Area
Interview Focus
Common Questions
How would you design a URL shortener for Reddit?
Discuss a time you had to deal with a difficult stakeholder.
What are your thoughts on the current state of web development frameworks?
Tips
Remote
Interview Focus
Common Questions
How would you optimize a feed algorithm for a specific demographic?
Describe a challenging debugging scenario you encountered.
What are your favorite open-source projects and why?
Tips
Process Timeline
Interview Rounds
3-step process with detailed breakdown for each round
Technical Coding Round 1
Coding challenge focusing on DSA.
This round focuses on your fundamental computer science knowledge. You will be presented with coding problems that require you to apply data structures and algorithms to find efficient solutions. The interviewer will assess your ability to understand the problem, devise a strategy, write clean and working code, and analyze its time and space complexity.
What Interviewers Look For
Evaluation Criteria
Questions Asked
Given an array of integers, find the contiguous subarray with the largest sum.
Implement a function to reverse a linked list.
Find the kth smallest element in an unsorted array.
Preparation Tips
Common Reasons for Rejection
System Design Round
Design a scalable system.
This round assesses your ability to design complex, scalable, and reliable systems. You will be given an open-ended problem, such as designing a social media feed or a URL shortener, and expected to discuss various components, data models, APIs, and potential bottlenecks. Emphasis is placed on your ability to reason about trade-offs and justify your design decisions.
What Interviewers Look For
Evaluation Criteria
Questions Asked
Design a system to handle Reddit's front page.
How would you design a real-time analytics dashboard for user engagement?
Design a distributed rate limiter.
Preparation Tips
Common Reasons for Rejection
Behavioral & Manager Round
Assessing behavioral and cultural fit.
This interview focuses on your behavioral and cultural fit. The hiring manager will ask questions about your past experiences, how you handle challenges, work in teams, and your motivations. They are looking for evidence of collaboration, problem-solving, and alignment with Reddit's values. Be prepared to share specific examples using the STAR method.
What Interviewers Look For
Evaluation Criteria
Questions Asked
Tell me about a time you had to work with a difficult teammate.
Describe a challenging technical problem you faced and how you solved it.
Why are you interested in working at Reddit?
Preparation Tips
Common Reasons for Rejection
Commonly Asked DSA Questions
Frequently asked coding questions at Reddit