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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
11.9k
Companies
569
Updated
10.02.2026
11.9k Questions 569 Companies10.02.2026

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>Build a 30-day plan from PracHub's Meta SWE questions.

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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
Mercor logo
Mercor
Medium
Machine Learning Engineer

Design a workflow orchestration system that runs multi-step jobs reliably

Design a workflow system. Users define a workflow as a set of steps with dependencies between them, start runs of that workflow, and the system execut...

System DesignJob Scheduling & WorkflowsFault Tolerance & Failover
6
0
67 people solved
Sep 25, 2026
Google logo
Google
Medium
Data Scientist

Explain P-values and Confidence Intervals in Simple Linear Regression

Explain P-values and Confidence Intervals in Simple Linear Regression Discuss p-values, confidence intervals and simple linear regression. To make the...

Statistics & MathHypothesis TestingRegression & Statistical Modeling
6
0
97 people solved
Sep 23, 2026
Apple logo
Apple
Medium
Software Engineer

Unit Ratio Queries Across Independent Unit Families with Modular Answers

There are n units of measure, numbered 0 to n - 1. The units fall into several independent families: units in the same family can be converted into on...

Coding & AlgorithmsGraphsMath & Number Theory
4
0
55 people solved
Sep 27, 2026
Citadel logo
Citadel
Medium
Software EngineerIntern

Order Book With Per-Exchange BBO and Cross-Exchange NBBO Queries

Design and implement an in-memory order book that aggregates resting quantity from several exchanges. Every record has an exchange name, a price, a qu...

Software Engineering FundamentalsData Structure DesignHeaps & Priority Queues
11
1
127 people solved
Sep 10, 2026
Google logo
Google
Medium
Software Engineer

Determine Whether the Last Array Index Is Reachable by Forward Jumps

You are given a list of non-negative integers nums and start at index 0. The value nums[i] is the longest jump you may make from index i: from i you m...

Coding & AlgorithmsGreedy
12
1
119 people solved
Sep 7, 2026
IBM logo
IBM
Medium
Software Engineer

Count Index Triplets Whose Max Minus Min Is at Most d

You are given an integer array arr and a non-negative integer d. A triplet is a choice of three distinct positions i < j < k of arr. Its spread is the...

Coding & AlgorithmsTwo Pointers & Sliding Window
3
0
33 people solved
Sep 30, 2026
Anthropic logo
Anthropic
Medium
Software Engineer

Review a Batched GPU Inference API Design Doc: Flaws, Throughput, Mixed-Model GPUs

This system design round is a design-document review rather than a whiteboard design: you are handed a short design doc for a model inference API and ...

System DesignGPU Infrastructure
8
0
79 people solved
Sep 18, 2026
Together AI logo
Together AI
Easy
Software Engineer

Investigate a Server Saturated by Logging

A server is being overwhelmed and logs may be involved. Explain how you would trace the cause, stabilize the service, and prevent the problem from rec...

Software Engineering FundamentalsDebuggingObservability
5
0
93 people solved
Sep 15, 2026
OpenAI logo
OpenAI
Hard
Machine Learning Engineer

Debug a Small PyTorch Transformer with Four Bugs, Then Add a KV Cache

This machine learning coding round has two parts. First, a small decoder-only transformer language model and its training step contain four bugs; find...

Machine LearningML CodingTransformers & Attention
9
0
76 people solved
Sep 20, 2026
Anthropic logo
Anthropic
Medium
Software Engineer

Design a Telemetry Pipeline That Handles Inconsistent Metric Names from Old Clients

Design a telemetry system for a data infrastructure team. A large fleet of deployed client software reports telemetry: each record names what is being...

System DesignObservabilityData Ingestion & CDC
10
0
88 people solved
Sep 18, 2026
Ramp logo
Ramp
Medium
Software Engineer

Spreadsheet String Concatenation with Dependent Cells

Implement a 26-column, 100-row spreadsheet that stores strings and supports formulas that concatenate other cells. When a referenced cell changes, fut...

Coding & AlgorithmsGraphsArrays & Strings
4
0
91 people solved
Sep 18, 2026
LinkedIn logo
LinkedIn
Easy
Software Engineer

Merge Two N-ary Trees by Matching Node Keys

You are given two rooted n-ary trees in which every node carries an integer key. Merge them by key: a node of the first tree and a node of the second ...

Coding & AlgorithmsTrees
3
0
73 people solved
Sep 21, 2026
Waymo logo
Waymo
Medium
Data Scientist

Sample Points Uniformly from a Unit Disk

Sample Points Uniformly from a Unit Disk Write a function that takes the requested number of points, n, and returns n random two-dimensional points di...

Coding & AlgorithmsProbabilityMath & Number Theory
6
0
47 people solved
Sep 28, 2026
Anthropic logo
Anthropic
Hard
Software Engineer

Route and Batch Inference with Eight GPUs

Discuss an inference API design, concentrating on load balancing and batching. Then address a cluster with eight GPUs: one large model needs all eight...

ML System DesignGPU InfrastructureMLOps & Model Serving
29
0
199 people solved
Sep 8, 2026
Anthropic logo
Anthropic
Medium
Software Engineer

Why Anthropic, What AI Safety Means to You, and AI Misuse: Recruiter Screen Prep

This is the initial recruiter screen at Anthropic, typically about 30 minutes. Candidates report that it skips small talk and spends most of its time,...

Behavioral & LeadershipMotivation & FitEthics & Responsibility
4
0
84 people solved
Sep 18, 2026
Google logo
Google
Medium
Software Engineer

Find the first larger value for every element of a circular array

You are given an integer array nums that is treated as circular: after the last element, scanning continues from the first element. For every index i,...

Coding & AlgorithmsStacks & Queues
3
1
51 people solved
Sep 21, 2026
OpenAI logo
OpenAI
Medium
Software Engineer

Design power grid device monitoring over an unreliable public internet

Design a system that monitors devices on a power grid. Devices in the field report their status to a central monitoring system over the public interne...

System DesignObservabilityFault Tolerance & Failover
4
0
40 people solved
Sep 28, 2026
Meta logo
Meta
Medium
Machine Learning Engineer

Implement the Forward Pass of Multi-Head Attention From Scratch

Implement the forward pass of a multi-head attention layer from scratch. The interviewer provides no test cases, so correctness has to be argued from ...

Machine LearningTransformers & AttentionML Coding
4
0
52 people solved
Sep 25, 2026
Anthropic logo
Anthropic
Medium
Software Engineer

Performance-Model a Sharded Matrix Multiply: FLOPs, Memory, Network and Roofline

This round is a performance-modeling exercise for machine learning systems, done by hand. Consider the matrix multiplication C = A × B, where A has sh...

ML System Design
8
0
75 people solved
Sep 18, 2026
Decagon logo
Decagon
Medium
Software Engineer

Shopping Cart with Undo and Redo for Add and Remove Operations

Implement a shopping cart that supports undo and redo. The cart holds items and their quantities. A user can add items and remove items, undo their mo...

Software Engineering FundamentalsLow-Level Design (OOP)
5
0
77 people solved
Sep 18, 2026
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