Optiver Interview Questions
Practice the exact questions companies are asking right now.
"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."
"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."
Optimize flight and cargo bookings for profit
OptiCargo: make the booking algorithm profitable You are given two streams/lists: - Flights you may attempt to book. Each flight has: - flight_id ...
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 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...
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 balloon stability tracker
Implement a class BalloonFestival to manage hot-air balloons and wind fields over time, and to report rewarded balloons at inspection times. Methods 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 Balloon Festival Simulator
Implement a class BalloonFestival with the following API and rules. Goal Track hot air balloons (yours and competitors), evolving wind fields, and bal...
Compute probabilities and expectations in random processes
You are asked to solve the following probability/expectation questions. Unless stated otherwise, assume all random choices are uniform and independent...
Optimize switching puzzle solution
Consider a switching puzzle on an m×n grid of lights where toggling a cell flips its state and that of its orthogonal neighbors (Lights Out variant). ...
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...
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...
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...
Design a satellite propagation simulator
Implement a SatelliteNetwork class to simulate message propagation over an undirected satellite graph. Provide these methods: ( 1) satellite_connected...
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 an object-oriented queue and compare implementations
You are asked to design an object-oriented Queue abstraction and discuss how it can be implemented internally in different ways. Describe: 1. Queue in...
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...
Compute odds under time pressure
Timed Probability: At Least Two Reds in Three Draws You have an urn with r red, b blue, and g green balls. Let N = r + b + g with r, b, g ≥ 0 and N ≥ ...
Solve probability and expectation problems
Probability and Expectation Practice (Take‑home) Assume all coins and dice are fair unless stated otherwise. Show reasoning and final results. 1) Thre...
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...
Find next terms in sequences
Pattern Recognition: Find the Rule and Next Term You are given 8 number sequences. For each sequence: - Identify a clear rule that generates the terms...