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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
18.6k
Companies
980
Updated
11.12.2026
18.6k Questions 980 Companies11.12.2026
PLTCHK testimonial
PLTCHK

"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"

_The_TaNk_ testimonial
_The_TaNk_

"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"

Chris testimonial
ChrisSenior SWE, LinkedIn

"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."

sleepy33 testimonial
sleepy33

"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."

Jake testimonial
JakeSenior ML Engineer, Lyft

"Got a Google recruiter call on Monday, interview on Friday. Crammed PracHub for 4 days. Passed every round. This platform is a miracle worker."

nuggetlord testimonial
nuggetlord

"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."

Carlos testimonial
CarlosFull Stack, Shopify

"The solution quality is insane. It covers approach, edge cases, time complexity, follow-ups. Nothing else comes close."

boba.tea.vibes testimonial
boba.tea.vibes

"Legit the only resource you need. TC went from 180k -> 350k. Just memorize the top 50 for your target company and you're golden."

Andy testimonial
AndySWE-II, Google

"PracHub Premium for one month cost me the price of two coffees a week. It landed me a $280K+ starting offer."

couchpotato99 testimonial
couchpotato99

"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."

Shruti testimonial
ShrutiData Engineer, Salesforce

"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."

midnightramen testimonial
midnightramen

"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."

Bianca testimonial
BiancaFrontend Eng, Figma

"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."

tambrahm007 testimonial
tambrahm007

"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."

toa testimonial
toa

"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."

PLTCHK testimonial
PLTCHK

"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"

_The_TaNk_ testimonial
_The_TaNk_

"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"

Chris testimonial
ChrisSenior SWE, LinkedIn

"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."

sleepy33 testimonial
sleepy33

"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."

Jake testimonial
JakeSenior ML Engineer, Lyft

"Got a Google recruiter call on Monday, interview on Friday. Crammed PracHub for 4 days. Passed every round. This platform is a miracle worker."

nuggetlord testimonial
nuggetlord

"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."

Carlos testimonial
CarlosFull Stack, Shopify

"The solution quality is insane. It covers approach, edge cases, time complexity, follow-ups. Nothing else comes close."

boba.tea.vibes testimonial
boba.tea.vibes

"Legit the only resource you need. TC went from 180k -> 350k. Just memorize the top 50 for your target company and you're golden."

Andy testimonial
AndySWE-II, Google

"PracHub Premium for one month cost me the price of two coffees a week. It landed me a $280K+ starting offer."

couchpotato99 testimonial
couchpotato99

"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."

Shruti testimonial
ShrutiData Engineer, Salesforce

"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."

midnightramen testimonial
midnightramen

"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."

Bianca testimonial
BiancaFrontend Eng, Figma

"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."

tambrahm007 testimonial
tambrahm007

"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."

toa testimonial
toa

"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."

Showing 20 results
Furtherai logo
Furtherai
Medium
Machine Learning EngineerSenior+

Cutting Scope to Ship the Core Customer Problem First: Working Pragmatically With Product

This round tests how pragmatically you work with a product team: whether you can cut scope when it is needed, solve the customer's most important prob...

Behavioral & LeadershipOwnership & ExecutionConflict & Collaboration
2
0
15 people solved
Aug 30, 2026
xAI logo
xAIAmazonBloomberg

Also asked at Bloomberg, Google, Apple, Citadel, Yandex, Axon, Meta, Microsoft, Deshaw, LinkedIn, Affirm, Uber, Grammarly, TikTok, Quora, SoFi, Snowflake, DocuSign, IXL Learning

Medium
Machine Learning Engineer

Design O(1) random-sampling set

Randomized Written Variant Implement RandomizedSet, a set of integers with these operations: - RandomizedSet() creates an empty set. - insert(val) add...

Coding & AlgorithmsData Structure Design
32
0
253 people solved
Applied Intuition logo
Applied Intuition
Medium
Software Engineer Locked

Implement a fixed-capacity generic circular buffer

This question evaluates knowledge of data structure design, generic types, in-place memory allocation, and constant-time FIFO operations required for ...

Coding & Algorithms
5
0
62 people solved
Feb 11, 2026
Stripe logo
Stripe
Medium
Data Scientist

Diagnose and validate a ratio trend change

You are shown a weekly dispute_rate time series (disputes/succeeded_payments) that rises sharply, then partially reverts. Diagnose whether the change ...

Statistics & Math
17
0
122 people solved
Oct 13, 2025
Elastic logo
Elastic
Medium
Software Engineer

Review a JavaScript flatten PR

Live PR Review: JavaScript flatten using recursion You are reviewing a pull request that introduces a flatten utility. Intended behavior Implement fla...

Software Engineering Fundamentals
5
0
86 people solved
Nov 13, 2025
Stripe logo
Stripe
Hard
Software Engineer Locked

Calculate Per-User Usage Charges

This question evaluates algorithmic data aggregation, numeric billing computations, and the ability to model proration and threshold semantics across ...

Coding & AlgorithmsArrays & Strings
22
0
204 people solved
Jan 3, 2026
Google logo
Google
Medium
Software Engineer

Design an Enterprise AI Adoption Agent for a Global Company

Design an enterprise AI adoption agent for a global company with internal data, tools, and security constraints. `hint Hint 1 Start by stating assumpt...

System DesignAI AgentsAuthentication & Authorization
22
0
155 people solved
Mar 6, 2026
OpenAI logo
OpenAI
Hard
Data Scientist

Design a free-month experiment

An online subscription product is considering a promotion that gives eligible new users their first month free instead of charging immediately. Design...

Analytics & ExperimentationExperiment Design (A/B Testing)Experiment Analysis & Readout
81
0
578 people solved
Feb 3, 2026
Render logo
Render
Medium
Software Engineer

Count Blocked Rate-Limited Requests

You are given an in-memory request log for a web platform. Each log entry has: - timestamp: an ISO-8601 UTC timestamp - request_ip: the client IPv4 ad...

Coding & Algorithms
13
0
104 people solved
Feb 26, 2026
Qube Research & Technologies logo
Qube Research & Technologies
Medium
Software Engineer

Implement flat_map and design wealth redistribution

Part 1 — Implement a flat_map: Design and implement an associative container flat_map backed by a sorted dynamic array of (Key, Value) pairs. Support ...

Coding & AlgorithmsData Structure DesignBinary Search
22
0
187 people solved
Sep 6, 2025
Amazon logo
AmazonGoogleGoldman SachsBloomberg

Also asked at Goldman Sachs, Bloomberg

Medium
Software Engineer

Find a Same-Direction Cycle in a Circular Array

Find a Same-Direction Cycle in a Circular Array You are given a circular array nums of nonzero integers. From index i, move forward by nums[i] positio...

Coding & AlgorithmsGraphsTwo Pointers & Sliding Window
0
0
4 people solved
J.P. Morgan logo
J.P. Morgan
Medium
Software EngineerSenior+

Implement an O(1) LRU Cache, Then Extend It into an LFU Cache

Implement an in-memory key-value cache with a fixed capacity that evicts the least recently used entry when it is full, then extend it so that it evic...

Software Engineering FundamentalsData Structure DesignLinked Lists
0
0
7 people solved
Aug 18, 2026
Apple logo
Apple
Medium
Software Engineer Locked

Design a Distributed Token-Bucket Rate Limiter

Design a distributed rate limiter using token buckets. Connect requirements and APIs to data modeling, consistency, scaling, failure recovery, observa...

System DesignRate LimitingConsistency & Availability
24
0
214 people solved
Aug 9, 2026
Anthropic logo
Anthropic
Hard
Software Engineer

Design a low-latency ML inference API

System Design: Low-Latency ML Inference API (Real-Time) Context You are designing an in-region, synchronous ML inference API that sits on the critical...

ML System DesignMLOps & Model ServingReliability & SRE
81
0
1020 people solved
Sep 6, 2025
Oracle logo
Oracle
Medium
Software Engineer Locked

Approximate a Square Root Across Values Above and Below One

Approximate the principal square root of any nonnegative real input, including values below one, within a required absolute error of 1e-7.

Coding & Algorithms
6
0
47 people solved
Aug 7, 2026
OpenAI logo
OpenAI
Medium
Machine Learning Engineer

Find earliest supporting dependency version

Question Given a list of dependency versions (e.g. [103.003.02, 103.003.03, 203.003.02]) and a black-box API isSupported(v), design an algorithm to fi...

Coding & AlgorithmsBinary Search
94
0
710 people solved
Aug 4, 2025
Citadel logo
Citadel
Medium
Software EngineerIntern

Simulate 2048 and pack board into uint64

Problem: 2048 move simulation + board compression You are implementing part of the 2048 game on a fixed 4×4 grid. Part A — Simulate a move Given a 4×4...

Coding & AlgorithmsSimulation & State MachinesBit Manipulation
36
0
443 people solved
Feb 11, 2026
CloudKitchens logo
CloudKitchens
Medium
Software Engineer

Design receipt system with combo discounts

Question You are building a point-of-sale ordering UI for a food-ordering workflow. You are given class stubs and a callback you must wire up: - Item(...

Coding & AlgorithmsLow-Level Design (OOP)
26
0
307 people solved
Sep 6, 2025
StubHub logo
StubHub
Medium
Software Engineer Locked

Design Composable Event Recommendations

This question evaluates a candidate's ability to design composable, extensible recommendation logic and ranking for a ticket marketplace, emphasizing ...

Coding & AlgorithmsLow-Level Design (OOP)Recommendation Systems
14
0
127 people solved
Mar 29, 2026
Uber logo
Uber
Medium
Machine Learning EngineerSenior+

Find a Black-Box Convex Function Minimum

You are given access to a black-box function F(x): each call returns the function value at a real number x. You are also given a search interval [a, b...

Coding & Algorithms
6
0
112 people solved
Apr 19, 2026
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