Netflix
Streaming platform with a data-driven culture and freedom & responsibility ethos.
3 Rounds
~14 Days
Hard
The Interview Loop
Recruiter Screen (30 min)
Standard fit check, behavioral questions, and resume overview.
Technical Loop (3-4 Rounds)
Deep dive into domain knowledge, coding, and system design.
Interview Question Bank
Cloud Engineer
•
Coding
•
hard
Implement an algorithm to find the optimal placement of compute workloads across different AWS Availability Zones to minimize cross-AZ data transfer costs while maintaining high availability. You are given a graph of microservice dependencies and traffic volumes.
#Optimization
#Graph Algorithms
#Cloud Costs
Data Engineer
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Coding
•
medium
Given an array of user viewing intervals represented as [start_time, end_time], write an algorithm to find the maximum number of concurrent viewers at any given time.
#Sweep-line Algorithm
#Sorting
#Arrays
Data Scientist
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Coding
•
hard
Given an array of integers representing the bandwidth available at different servers and an integer K representing the required bandwidth for a streaming session, write an algorithm to find the number of contiguous server sub-arrays that can support the stream.
#Sliding Window
#Prefix Sum
#Optimization
Data Scientist
•
Coding
•
medium
Write a Python function to calculate the similarity between two users based on their viewing history using cosine similarity. Assume the input is highly sparse. How would you scale this for 200 million users?
#Python
#Linear Algebra
#Scalability
Machine Learning Engineer
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Coding
•
medium
Given a stream of movie IDs watched by users in real-time, write a function to return the top K trending movies over the last 1 hour. Optimize for high throughput.
#Heaps
#Sliding Window
#Stream Processing
Machine Learning Engineer
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Coding
•
hard
You have K sorted lists of recommended movie IDs from different microservices (e.g., 'Because you watched X', 'Trending', 'New Releases'). Write an algorithm to merge them into a single ranked list based on a global score.
#Divide and Conquer
#Heaps
#Pointers
Machine Learning Engineer
•
Coding
•
medium
Given a list of TV shows and a list of dependencies (e.g., Show A must be watched before Show B), write a function to determine if it is possible for a user to watch all the shows without violating dependencies.
#Graphs
#Topological Sort
#Cycle Detection
Software Engineer
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Coding
•
medium
Design and implement an LRU (Least Recently Used) Cache. How would you modify your implementation to be thread-safe for a high-concurrency environment like a metadata caching layer?
#Hash Map
#Doubly Linked List
#Concurrency
Software Engineer
•
Coding
•
medium
You are given a list of personalized movie recommendation lists from different ML microservices. Each list is sorted by relevance score. Write a function to merge them into a single sorted list.
#Linked Lists
#Priority Queue
#Divide and Conquer
Software Engineer
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Coding
•
medium
You are given a string representing a user's search query and a dictionary of valid movie titles. Write a function to determine if the query can be segmented into a space-separated sequence of valid titles.
#Dynamic Programming
#Trie
#Strings
Software Engineer
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Coding
•
hard
Given an array of server CPU loads over time, find the maximum load in every sliding window of size K to monitor streaming health anomalies.
#Sliding Window
#Deque
#Arrays
Software Engineer
•
Coding
•
hard
Implement a data structure that supports adding streaming latency metrics as they arrive and retrieving the median latency in O(1) or O(log N) time.
#Heaps
#Data Streams
#System Monitoring
Difficulty Radar
Based on recent AI-sourced data.
Meet Your Interviewers
The "Standard" Interviewer
Senior EngineerFocuses on core competencies, system constraints, and clear communication.
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Think Out Loud
Always explain your thought process before writing code or drawing architecture.