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
Machine Learning Engineer
•
Coding
•
hard
Given a stream of cryptocurrency orders (buy/sell, price, quantity), design a data structure to maintain the order book and efficiently match incoming orders.
#Heaps
#Design
#Trading Systems
Machine Learning Engineer
•
Coding
•
medium
Write a function to detect if a cycle exists in a directed graph representing blockchain transactions between wallets.
#Graphs
#DFS
#Topological Sort
Machine Learning Engineer
•
Coding
•
hard
Given an array of historical prices for a cryptocurrency, write an algorithm to find the maximum profit you can achieve with at most two transactions.
#Dynamic Programming
#Arrays
Machine Learning Engineer
•
Coding
•
medium
Given a list of trading intervals [start_time, end_time], merge all overlapping intervals.
#Sorting
#Arrays
Machine Learning Engineer
•
Coding
•
medium
Given a string representing a sequence of crypto ticker symbols, find the length of the longest substring without repeating characters.
#Sliding Window
#Hash Map
#Strings
Machine Learning Engineer
•
Coding
•
medium
Given an array of integers representing the daily trading volume of an asset, return the top K most frequent trading volumes.
#Heaps
#Hash Map
#Sorting
Machine Learning Engineer
•
Coding
•
hard
Given a stream of prices, design a data structure that supports inserting a price, and calculating the median price in O(log N) or better.
#Heaps
#Data Stream
Machine Learning Engineer
•
Coding
•
medium
Find the Lowest Common Ancestor (LCA) of two nodes in a Binary Tree. (Context: Merkle Trees in blockchain).
#Trees
#Recursion
Difficulty Radar
Based on recent AI-sourced data.
Meet Your Interviewers
The "Standard" Interviewer
Senior EngineerFocuses on core competencies, system constraints, and clear communication.
SimulateUnwritten Rules
Think Out Loud
Always explain your thought process before writing code or drawing architecture.