Optiver Interview Questions
Practice 51 real interview questions from Optiver. Covers Coding & Algorithms, Statistics & Math, System Design, Behavioral & Leadership. For roles including Software Engineer, Data Scientist.
"I got asked a hardcore MCM DP question and I saw it on PracHub as well. Solved that question in 5 minutes. Without PracHub I doubt I could solve it in 5 hours. Though somehow didn't get hired, perhaps I guess I solved it too fast? /s"
"Believe me i'm a student here jn US. Recently interviewed for MSFT. They asked me exact question from PracHub. I saw it the night before and ignored it cause why waste time on random sites. I legit wanna go back and redo this whole thing if I had chance. Not saying will work for everyone but there is certainly some merit to that website. And i'm gonna use it in future prep from now on like lc tagged"
"10 years of experience but never worked at a top company. PracHub's senior-level questions helped me break into FAANG at 35. Age is just a number."
"I was skeptical about the 'real questions' claim, so I put it to the test. I searched for the exact question I got grilled on at my last Meta onsite... and it was right there. Word for word."
"Got a Google recruiter call on Monday, interview on Friday. Crammed PracHub for 4 days. Passed every round. This platform is a miracle worker."
"I've used LC, Glassdoor, and random Discords. Nothing comes close to the accuracy here. The questions are actually current — that's what got me. Felt like I had a cheat sheet during the interview."
"The solution quality is insane. It covers approach, edge cases, time complexity, follow-ups. Nothing else comes close."
"Legit the only resource you need. TC went from 180k -> 350k. Just memorize the top 50 for your target company and you're golden."
"PracHub Premium for one month cost me the price of two coffees a week. It landed me a $280K+ starting offer."
"Literally just signed a $600k offer. I only had 2 weeks to prep, so I focused entirely on the company-tagged lists here. If you're targeting L5+, don't overthink it."
"Coaches and bootcamp prep courses cost around $200-300 but PracHub Premium is actually less than a Netflix subscription. And it landed me a $178K offer."
"I honestly don't know how you guys gather so many real interview questions. It's almost scary. I walked into my Amazon loop and recognized 3 out of 4 problems from your database."
"Discovered PracHub 10 days before my interview. By day 5, I stopped being nervous. By interview day, I was actually excited to show what I knew."
"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."
"The search is what sold me. I typed in a really niche DP problem I got asked last year and it actually came up, full breakdown and everything. These guys are clearly updating it constantly."
Design low-latency trading infrastructure
System design: low-latency trading system with colocated box You are designing infrastructure for an electronic trading system. - You have a server/lo...
Design a topic-based news subscription system
Topic-Based News Subscription Service — Design and Implementation Context Build an in-memory service that manages subscribers and delivers relevant ne...
Implement price-based order matcher
Design and implement a price-based order matcher for unit-sized orders. You are given an array orders where each element is [type, price]: type = 1 de...
Answer why SWE and why Optiver
Behavioral questions (trading firm SWE intern) You are in behavioral interviews for a SWE internship at a high-frequency/prop trading firm. Prepare st...
Detect currency arbitrage with costs
You are given a K×K matrix R of currency exchange rates where R[i][j] is the amount of currency j obtainable for one unit of currency i, and R[i][i] =...
Design a queue and analyze tradeoffs
Design a FIFO queue data structure that supports enqueue, dequeue, peek, and isEmpty. Compare implementations using a singly linked list, a dynamic ar...
Design a satellite propagation simulator
Implement a SatelliteNetwork class to simulate message propagation over an undirected satellite graph. Provide these methods: ( 1) satellite_connected...
Find missing numbers in sequences
You are given several number sequences (integers and/or rational numbers). Each sequence contains exactly one missing term written as ?. For each sequ...
Design a subscription push service
Object-Oriented Design: Publish/Subscribe Notification Service Design an object-oriented publish/subscribe notification service for user–topic subscri...
Analyze EV, arbitrage, and bet sizing across games
Betting Games: EV, Variance, Arbitrage, and Sizing Context You will be shown payout tables or odds for three independent games. Your task is to quickl...
Design a circular queue data structure
Problem Design and implement a fixed-capacity circular queue that supports constant-time operations. A circular queue stores elements in an array of s...
Solve a Skyscraper puzzle efficiently
Design and implement a solver for the Skyscraper logic puzzle on an N×N grid (3 ≤ N ≤ 7). Each row and column must contain the numbers 1..N without re...
Decide and implement DP/heap and approximation
You have 90 minutes to complete three related coding tasks: a) Dynamic programming: Given an integer array nums (n ≤ 2e 5) and a threshold T, design a...
Plan for timed probability assessment
Timed Probability/Statistics Assessment Strategy (30 Questions, Strict Time Limit) Prompt You are taking a timed online assessment with 30 probability...
Design a satellite propagation simulator
Object-Oriented SatelliteNetwork: Message Propagation Simulator Design and implement an object-oriented SatelliteNetwork that processes a stream of in...
Design and backtest a trading strategy
Minute-Level Mean-Reversion Strategy: Design, Backtest, Validation, and Significance Context You are given minute-level OHLCV data (open, high, low, c...
How to rank statements by likelihood
You are given a "likelihood" / "data interpretation" test. For each question: - You are shown a data representation (e.g., a large table, a scatter pl...
Solve numeric sequence pattern puzzles
Sequence Prediction Task You are given five independent number sequences. For each, determine the next term and briefly explain the rule you used. Ass...
Solve quick probability questions
Rapid-Fire Probability Questions Context Answer the following independent probability questions. Assume fair dice/coin and a standard 52-card deck. Sh...
Match alphanumeric patterns in a stream
Given a reference 7–8 character alphanumeric code and four candidate codes, select the exact match as quickly as possible. Design a system that: - Eff...