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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
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
Meta logo
Meta
Medium
Software Engineer

Impact and Conflict Stories for a Level-Calibrating Behavioral Interview

This behavioral interview weighs heavily in level calibration: a weak performance can lead to a candidate being leveled one step below the level they ...

Behavioral & LeadershipProject Deep DiveConflict & Collaboration
1
0
16 people solved
Sep 14, 2026
Quantbot Technologies logo
Quantbot Technologies
Hard
Data Scientist

Implement GLM Training and Prediction from an Explicit Family and Link

Explain how you would implement training and prediction for a generalized linear model (GLM) from scratch. Define the model, objective, optimization p...

Machine LearningRegression & Statistical Modeling
1
0
16 people solved
Sep 13, 2026
Google logo
Google
Medium
Software EngineerSenior+ Locked

Design a Large-Scale Polite Web Crawler

Design a polite distributed web crawler for roughly ten billion pages and periodic recrawls. Cover a host-aware frontier, robots enforcement, deduplic...

System DesignSystem Design FundamentalsJob Scheduling & Workflows
16
0
290 people solved
Aug 6, 2026
Microsoft logo
Microsoft
Medium
Software EngineerSenior+

Respond to a Reliability Regression Shortly After Deployment

A new version has been deployed, and 10–15 minutes later latency or reliability worsens. Explain how you would detect the problem, decide whether to r...

Software Engineering FundamentalsReliability & SRECI/CD & Deployment
2
0
24 people solved
Sep 10, 2026
Verkada logo
Verkada
Medium
Software Engineer Locked

Validate a Partially Filled Sudoku Board

Validate a partially filled Sudoku board by checking every row, column, and three-by-three box for duplicate digits. The prompt distinguishes validity...

Coding & Algorithms
8
0
68 people solved
Sep 4, 2026
Digitalocean logo
Digitalocean
Medium
Software Engineer

Specify House-Selection Constraints Before Choosing a Robbery Dynamic Program

Discuss a house-robbery optimization problem in which a set of houses has values and some choices cannot be combined. Explain which constraints must b...

Software Engineering FundamentalsDynamic Programming
2
0
16 people solved
Sep 16, 2026
Mixpanel logo
Mixpanel
Medium
Data Scientist

Compare First-Week Retention by Plan Type

Compare First-Week Retention Across Plan Types You have these tables: | Table | Column | Meaning | |---|---|---| | users | user_id | User identifier. ...

Data Manipulation (SQL/Python)SQLSegmentation & Cohort Analysis
2
0
17 people solved
Sep 14, 2026
OpenAI logo
OpenAI
Medium
Software Engineer

Implement a Simple Memory Allocator

Design and implement a simplified memory allocator exposing malloc(size) and free(ptr) over a single fixed-size heap (a contiguous byte array). The al...

Software Engineering FundamentalsMemory ManagementData Structure Design
60
0
620 people solved
May 29, 2026
Instacart logo
Instacart
Medium
Software EngineerSenior+

Evaluate a Variable from Chained Assignments with +/- Expressions and Cycle Detection

Given a set of assignments and a target variable, return the value of the target. For example, with the target T1 and the assignments `text T1 = T2 T2...

Software Engineering FundamentalsParsing & InterpretersGraphs
1
0
19 people solved
Sep 10, 2026
OpenAI logo
OpenAI
Hard
Software Engineer Locked

Design a Dependency-Aware Concurrent Tool Scheduler

Design a dependency-aware concurrent tool scheduler with validated per-agent DAGs, a global execution limit, fair ready queues, atomic state transitio...

Software Engineering FundamentalsJob Scheduling & WorkflowsConcurrency
23
0
240 people solved
Aug 16, 2026
LinkedIn logo
LinkedIn
Medium
Software Engineer

Explain a Project with a Diagram and Deep Dive into Your Design

Explain a previous engineering project to another engineer using a simple diagram, then take a technical deep dive into its design and the part you pe...

Software Engineering FundamentalsProject Deep Dive
3
0
25 people solved
Sep 17, 2026
Tesla logo
Tesla
Hard
Software EngineerSenior+

Flatten a Linked List with Nested Side Branches into One Doubly Linked List

A singly linked list becomes a doubly linked list once every node also links back to its predecessor. This problem extends that conversion. Besides it...

Coding & AlgorithmsLinked Lists
3
0
26 people solved
Sep 7, 2026
Snapchat logo
Snapchat
Medium
Software EngineerSenior+

Design and Implement a Thread-Safe LRU Cache

Design and Implement a Thread-Safe LRU Cache Design an in-memory cache with fixed positive capacity and operations get(key) and put(key, value). - get...

Software Engineering Fundamentals
2
0
40 people solved
Aug 28, 2026
Microsoft logo
Microsoft
Medium
Software EngineerSenior+

Resolve Technical Disagreement and Work Across Different Styles

Describe a technical disagreement with an engineer or lead and how it was resolved. Also explain how you worked effectively with a colleague whose wor...

Behavioral & LeadershipConflict & CollaborationCommunication & Stakeholders
1
0
20 people solved
Sep 10, 2026
Rippling logo
Rippling
Hard
Software Engineer AI Locked

Implement a Searchable Logger Pipeline

This question evaluates proficiency in software design, data structures, and algorithmic text search by requiring a transformation pipeline, ordered i...

Coding & AlgorithmsData Structure Design
47
2
357 people solved
May 31, 2026
OpenAI logo
OpenAI
Hard
Software Engineer Locked

Design a Digital Game Distribution Platform

Design a digital game distribution platform spanning transactional purchases, refunds and entitlements, immutable builds, chunked CDN downloads, offli...

System Design
19
0
150 people solved
Aug 16, 2026
OpenAI logo
OpenAI
Hard
Software Engineer

Build a Rectangle Board with Remove-at-Cell, Batch Remove, and Undo

Implement a 2D board that holds axis-aligned rectangles. The requirements arrive one at a time, and each Part builds on your code from the previous on...

Software Engineering FundamentalsData Structure Design
3
0
23 people solved
Aug 30, 2026
Google logo
Google
Hard
Machine Learning Engineer

Detect and Prevent Reward Hacking

Detect and Prevent Reward Hacking Explain how reward hacking appears during language-model post-training and how you would detect, limit, and respond ...

Machine Learning
9
0
76 people solved
Aug 14, 2026
Pinterest logo
Pinterest
Hard
Software Engineer

Behavioral Deep Dive: Owned Project Metrics, Fast Decisions, Feedback, and Conflict

You are in the behavioral round of a software engineering onsite. The interviewer works through a standard set of leadership questions one at a time. ...

Behavioral & LeadershipProject Deep Dive
3
0
30 people solved
Sep 2, 2026
Waymo logo
Waymo
Medium
Software Engineer

End-Picking Number Game: Can the First Player Win Under Optimal Play?

Two players play a game on a row of non-negative integers nums. They alternate turns, and Player 1 moves first. On each turn, the current player remov...

Coding & AlgorithmsDynamic Programming
2
0
25 people solved
Sep 10, 2026
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