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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
OpenAI logo
OpenAI
Medium
Software Engineer Locked

Clarify a Machine Topology Coding Task

Practice recovering an underspecified machine topology coding contract, separating count and topology outputs, designing discriminating tests, and jus...

Software Engineering Fundamentals
14
0
131 people solved
Aug 15, 2026
Hudson River Trading logo
Hudson River Trading
Medium
Software Engineer Locked

Explain C++ Inline Semantics and Trade-Offs

Explain that C++ inline semantics permit suitable definitions across translation units but do not require call-site expansion. Evaluate compiler optim...

Software Engineering Fundamentals
8
0
79 people solved
May 15, 2026
CloudKitchens logo
CloudKitchens
Medium
Software Engineer

Answer static and streaming Top-K queries

Top-K in static and streaming settings (3 variants) You are given integers and asked to answer Top-K queries under three different scenarios. Variant ...

Coding & AlgorithmsHeaps & Priority QueuesData Structure Design
15
0
189 people solved
Aug 20, 2025
Amazon logo
Amazon
Medium
Applied Scientist

Implement binary search lower/upper bounds

Question Given a non-decreasing sorted integer array nums of length n and a target value, implement two functions using binary search: 1. lower_bound(...

Coding & Algorithms
14
0
120 people solved
Sep 6, 2025
Google logo
Google
Medium
Software Engineer Locked

Answer Backend Behavioral Questions with Follow-up Depth

Prepare a structured Google behavioral interview answer for answer backend behavioral questions with follow-up depth. The prompt helps candidates fram...

Behavioral & LeadershipConflict & CollaborationOwnership & Execution
15
0
109 people solved
Jun 5, 2026
Instacart logo
Instacart
Easy
Data Scientist

How to debug an apparent D14 retention drop

Scenario A dashboard shows D14 retention (users retained on day 14 after signup/first activity). In the last week, the chart shows a sharp decline. As...

Analytics & ExperimentationMetric DiagnosticsSegmentation & Cohort Analysis
10
0
125 people solved
Feb 6, 2026
Snapchat logo
Snapchat
Medium
Software Engineer

Implement a thread-safe rate limiter

Design and implement a per-user API rate limiter. Requirements: - Method: boolean allow(String userId, long nowMillis) returns whether the request is ...

Coding & AlgorithmsRate LimitingConcurrency
12
0
139 people solved
Jan 26, 2026
Meta logo
Meta
Medium
Product Manager

North Star, Quality and Guardrail Metrics for AI Assistance in Meta's Chat Apps

You are a PM at Meta responsible for the AI-powered features in its messaging apps. How would you define success for these features, and which metrics...

Analytics & ExperimentationMetrics & KPIsAI Product Management
0
0
6 people solved
Mar 21, 2026
Kikoff logo
Kikoff
Easy
Software Engineer Locked

Validate a Third-Party Identity Payload

Validate a documented third-party identity payload using four required matches and a caller-supplied set of blocked message codes. Separate parsing, s...

Software Engineering Fundamentals
4
0
77 people solved
Jun 27, 2026
OpenAI logo
OpenAI
Hard
Machine Learning Engineer

Design an image/video near-duplicate detection system

Question Design a system to detect near-duplicate images/videos (e.g., reuploads, minor edits, different encodes) at large scale. Requirements - Suppo...

ML System DesignComputer VisionEmbeddings & Vector Search
17
0
236 people solved
Dec 15, 2025
Google logo
Google
Hard
Software Engineer Locked

Minimize maximum height along a grid path

This question evaluates algorithmic pathfinding and graph-modeling skills, specifically reasoning about grid-based route selection where the objective...

Coding & AlgorithmsGrids & MatricesGraphs
20
1
137 people solved
Jan 4, 2026
Google logo
Google
Medium
Machine Learning Engineer

Answer conflict, failure, and proud project questions

Behavioral questions Answer the following behavioral prompts using real examples from your experience: 1. Conflict: Tell me about a time you had a con...

Behavioral & LeadershipConflict & CollaborationFailure & Learning
9
0
134 people solved
Jan 22, 2026
Citadel logo
Citadel
Medium
Software Engineer

Compute BBO and NBBO from order data

You are given a list data of order records. Each record is a 4-tuple: ` (exchange_id, price, quantity, order_type) ` - exchange_id: string/int identif...

Coding & AlgorithmsData Structure Design
25
0
355 people solved
Feb 12, 2026
xAI logo
xAI
Medium
Software Engineer Locked

Design backend to score and classify tweets

This question evaluates backend system design skills including data modeling and ingestion, integration with external LLM-style inference APIs, worker...

System DesignSystem Design FundamentalsData Quality & Validation
19
0
163 people solved
Dec 1, 2025
OpenAI logo
OpenAI
Hard
Machine Learning Engineer

Design a low-latency RAG system

Design a Low-Latency RAG System for Customer Support Problem Statement Design a production-grade retrieval-augmented generation (RAG) system that powe...

ML System DesignRetrieval-Augmented GenerationEmbeddings & Vector Search
31
0
419 people solved
Jul 27, 2025
Otter.Ai logo
Otter.Ai
Medium
Software Engineer Locked

Implement an Arithmetic Expression Evaluator

This question evaluates expression parsing, operator precedence, tokenization, integer arithmetic semantics (including truncation), and handling of ne...

Coding & Algorithms
4
0
32 people solved
May 29, 2026
Capital One logo
Capital One
Medium
Data Scientist

Impute, join, and upsert using SQL and Python

Write both SQL and Python (pandas) to complete the following data-manipulation tasks. Assume today is 2025-09-01 for any time filters. Schema: custome...

Data Manipulation (SQL/Python)
5
0
40 people solved
Oct 13, 2025
Google logo
Google
Hard
Software Engineer

Design distributed log storage service

Design a Distributed Append-Only Log Storage System You are asked to design the storage layer of a distributed, partitioned, replicated append-only lo...

System DesignDatabase InternalsConsensus & Replication
21
0
166 people solved
Sep 6, 2025
Rippling logo
Rippling
Hard
Software Engineer Locked

Design several backend components

This set of prompts evaluates backend system design, API and data-modeling skills, low-level software architecture, and competencies in consistency, c...

Software Engineering FundamentalsLow-Level Design (OOP)Key-Value Stores
16
0
244 people solved
Feb 12, 2026
NVIDIA logo
NVIDIA
Medium
Software Engineer

Construct tree from inorder & postorder

Question LeetCode 106. Construct Binary Tree from Inorder and Postorder Traversal – Given the inorder and postorder traversal arrays of a binary tree,...

Coding & Algorithms
13
0
116 people solved
Aug 4, 2025
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