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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
12.1k
Companies
579
Updated
10.10.2026
12.1k Questions 579 Companies10.10.2026
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
Datologyai logo
Datologyai
Easy
Software Engineer

Text Editor with a Cursor: Typing, Backspace, and Four-Way Cursor Movement

Implement a TextEditor class that holds one document and a cursor. The cursor sits between two characters, or at the start or end of the text, and eve...

Software Engineering FundamentalsData Structure DesignStacks & Queues
1
0
20 people solved
Jan 1, 2026
Verkada logo
Verkada
Medium
Software Engineer

Design access control and heartbeat systems

Design two backend systems. Part A: Door access control system Design a service that manages which people can open which doors. The system must suppor...

System DesignSystem Design FundamentalsAuthentication & Authorization
22
0
205 people solved
Jan 23, 2026
Anthropic logo
Anthropic
Medium
Software Engineer

Why Anthropic and its values?

This interview evaluates culture fit, value alignment, and critical thinking for Anthropic. Prepare one coherent discussion that addresses all of the ...

Behavioral & LeadershipMotivation & FitEthics & Responsibility
54
0
391 people solved
Oct 19, 2025
Snowflake logo
Snowflake
Medium
Frontend Engineer Locked

Design Calendar Frontend State for Recurring Events

Design frontend state and APIs for a calendar with bounded views, recurring series, and single-occurrence rescheduling. Separate normalized server dat...

System Design
7
0
85 people solved
Aug 3, 2026
Amazon logo
Amazon
Medium
Machine Learning Engineer

Implement Multi-Head Attention with a KV Cache and Cached Grouped-Query Attention

Implement the attention layer of a decoder-only transformer from scratch, in three steps that build on each other: standard multi-head attention, a ke...

Machine LearningTransformers & AttentionML Coding
2
0
25 people solved
Jan 3, 2026
Applied Intuition logo
Applied Intuition
Easy
Software Engineer

Find intersection of two line segments

Problem Given two 2D line segments AB and CD, determine whether they intersect. Each segment is defined by its endpoints: - A(x1, y1), B(x2, y2) - C(x...

Coding & Algorithms
6
0
92 people solved
Feb 12, 2026
Anthropic logo
Anthropic
Hard
Software Engineer Locked

Answer culture-fit reflection questions

This question evaluates intrinsic motivation and accountability, probing sustained self-driven curiosity and the ability to recognize and own mistakes...

Behavioral & LeadershipConflict & CollaborationFailure & Learning
74
0
532 people solved
May 11, 2026
Anthropic logo
Anthropic
Medium
Software Engineer Locked

Path Resolution with Symbolic Links

This question evaluates a candidate's ability to implement filesystem-style path resolution, including handling relative and absolute paths, dot compo...

Coding & Algorithms
5
0
77 people solved
Jun 23, 2026
Applied Intuition logo
Applied Intuition
Medium
Software Engineer

Build a File-Driven Data Visualization and Replay UI

Build a small web app that loads a data file and visualizes its contents. Include controls to replay the visible data over time. Constraints & Assumpt...

Software Engineering FundamentalsReact & UI FrameworksParsing & Interpreters
1
0
18 people solved
Jun 17, 2026
Apple logo
Apple
Medium
Software Engineer

Design a Service for the Top K Most-Visited URLs over a Sliding Time Window

Design a system that reports the top K most-visited URLs over a recent time window. Every page visit or link click produces an event that names the UR...

System DesignReal-Time SystemsBatch & Stream Processing
0
0
4 people solved
Aug 31, 2026
Mercor logo
Mercor
Medium
Software Engineer

Compare streaming frameworks and delivery semantics

Name popular streaming/data-processing frameworks (e.g., Kafka-based stacks, Flink, Spark Streaming, etc.). Explain at-most-once, at-least-once, and e...

System DesignMessaging & Event-DrivenBatch & Stream Processing
21
0
234 people solved
Jan 17, 2026
Brex logo
Brex
Medium
Software Engineer

Build a React color multi-select dropdown UI

Implement a React UI that lets users multi-select colors from a dropdown and view details. You are given a JavaScript object where each key is a color...

Software Engineering FundamentalsReact & UI FrameworksState Management
7
0
126 people solved
Feb 10, 2026
Salesforce logo
Salesforce
Medium
Software Engineer Locked

Count the Ways to Split a Digit String into Primes

This question evaluates dynamic programming combined with number theory, specifically counting valid partitions of a digit string under a primality co...

Coding & Algorithms
6
0
44 people solved
Jun 30, 2026
Amazon logo
Amazon
Medium
Software Engineer Locked

Architect an AI Chatbot for Enterprise Users

Prepare for a Amazon system design interview about architect an ai chatbot for enterprise users. This question focuses on requirements, architecture, ...

System DesignLLM ApplicationsAI Safety & Alignment
17
0
164 people solved
Jul 1, 2026
Waymo logo
Waymo
Hard
Software Engineer

Count Squares Formed by Segments

Count Squares Formed by Segments You are given axis-aligned line segments with integer coordinates. Each segment is represented by two endpoints. One ...

Coding & Algorithms
5
0
89 people solved
May 5, 2026
Amazon logo
Amazon
Easy
Software Engineer Locked

Unify Stock-Trading Profit Variants

Implement one stock-profit interface for limited transactions, unlimited transactions, and per-sale fees. Model cash and holding states, handle zero o...

Coding & Algorithms
3
0
31 people solved
Jul 4, 2026
Figma logo
Figma
Medium
Data Engineer

Validate an IPv4 address string

Given a string s, determine whether it is a valid IPv4 address. A valid IPv4 address: - Has exactly 4 parts separated by dots (.): x1.x2.x3.x4 - Each ...

Coding & AlgorithmsArrays & Strings
18
0
215 people solved
Jan 20, 2026
Gimlet Labs logo
Gimlet Labs
Medium
Member of Technical Staff, ML Systems

Design an Offline Inference Platform with Hardware-Aware Routing

Interview Prompt Design an offline large-model inference platform that can place different phases of work on different hardware pools, including older...

ML System Design
4
0
58 people solved
Apr 15, 2026
Datadog logo
Datadog
Hard
Software Engineer

Design an image detection system

System Design: End-to-End Image Object-Detection Service Context Design a production-grade service that ingests user-uploaded images, runs object dete...

ML System DesignSystem Design FundamentalsComputer Vision
43
0
301 people solved
Sep 6, 2025
Box logo
Box
Hard
Machine Learning Engineer Locked

Improve Keyword Search Ranking

This question evaluates an ML engineer's search system design competency, including information retrieval and ranking principles, feature and model se...

ML System DesignRanking ModelsAnnotation & Label Quality
23
0
160 people solved
Jun 5, 2026
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