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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
11.9k
Companies
570
Updated
10.05.2026
11.9k Questions 570 Companies10.05.2026
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
xAI logo
xAI
Easy
Software Engineer

Implement an in-memory database with TTL and backup

In-Memory Database (Levels 1–4: TTL and Backup/Restore) Implement an in-memory database that stores records identified by a string key. Each record co...

Coding & AlgorithmsData Structure Design
129
2
1243 people solved
Jan 6, 2026
ByteDance logo
ByteDance
Medium
Software Engineer

Design an Asynchronous Video Moderation Pipeline with ML Risk Scores and a Rules Engine

Design a simplified video content moderation system. Video upload is out of scope: assume an existing system delivers each newly published, already-up...

System DesignSystem Design FundamentalsFault Tolerance & Failover
1
0
12 people solved
Sep 6, 2026
Falconx logo
Falconx
Medium
Software Engineer

Longest Single-Venue Execution Window Within Price-Range and Slippage Limits

You are building an audit module for a high-frequency trading platform. It receives trade-execution logs from several exchanges (venues) as an asynchr...

Coding & AlgorithmsTwo Pointers & Sliding WindowStacks & Queues
1
0
9 people solved
Sep 6, 2026
Rippling logo
Rippling
Medium
Software Engineer AI Locked

Design a Driver Payroll System

This question evaluates a candidate's understanding of data structure design, time-series aggregation, and algorithmic complexity for in-memory accoun...

Coding & AlgorithmsData Structure DesignHeaps & Priority Queues
29
0
239 people solved
Mar 21, 2026
Siemens logo
Siemens
Medium
Machine Learning EngineerSenior+

Compare GRPO and PPO and Explain Sparse Versus Dense Rewards

Compare Group Relative Policy Optimization (GRPO) with PPO for language-model post-training. Explain GRPO's advantages and limitations, and assess whe...

Machine LearningReinforcement LearningFine-Tuning & Alignment Techniques
1
1
18 people solved
Sep 4, 2026
Instacart logo
Instacart
Medium
Software Engineer

Make a Variable Resolver Safe for Production Use

A variable resolver accepts definitions whose right-hand sides are either integer literals or other variable names. Discuss its time complexity and ho...

Software Engineering FundamentalsCode Quality & MaintainabilityGraphs
1
0
16 people solved
Sep 11, 2026
Airwallex logo
Airwallex
Medium
Software EngineerSenior+ Locked

Design a Large-File Analysis Report System

Design an authenticated large-file upload and analysis service with resumable storage, idempotent async jobs, versioned reports, and tenant isolation.

System Design
3
0
65 people solved
Sep 2, 2026
Mercor logo
Mercor
Medium
Machine Learning Engineer

Design Candidate Search And LLM Evaluation Tasks

Prepare for an MLE onsite with three themes: finding top candidates from a job description, reasoning about an unreliable deterministic comparator, an...

ML System DesignRetrieval & Candidate GenerationRanking Models
26
0
237 people solved
Apr 21, 2026
Stripe logo
Stripe
Hard
Software Engineer

Detect Trigger and Resolve Events

You are given transaction logs sorted by non-decreasing timestamp. Each log record has four fields: - timestamp: integer time in seconds - merchant_id...

Coding & AlgorithmsTwo Pointers & Sliding WindowSimulation & State Machines
20
1
321 people solved
Jan 15, 2026
Google logo
Google
Medium
Software Engineer Locked

Approach a Forced-Choice Work-Style Assessment Consistently

Approach a forced-choice work-style assessment through truthful, stable evidence rather than a manufactured ideal profile. The discussion explains rel...

Behavioral & Leadership
1
0
34 people solved
Aug 16, 2026
LinkedIn logo
LinkedIn
Medium
DevOps EngineerSenior+ Locked

Explore an Unknown Grid and Return a Robot Path

Design a robot algorithm that explores an initially unknown finite grid and returns a shortest traversable path from the start to a known target, or r...

Software Engineering Fundamentals
4
0
31 people solved
Aug 1, 2026
Anthropic logo
Anthropic
Medium
Software Engineer Locked

Same-Domain Web Crawl (BFS)

This question evaluates a candidate's ability to implement graph traversal using breadth-first search while applying a domain-matching filter and dedu...

Coding & Algorithms
5
0
73 people solved
Jun 23, 2026
Robinhood logo
Robinhood
Medium
Software Engineer Locked

Maintain Fractional Stock Inventory Across Orders

Simulate sequential customer buy and sell orders while keeping a firm's fractional stock inventory between zero and one share. The task uses scaled in...

Coding & Algorithms
8
0
72 people solved
Jun 22, 2026
Anthropic logo
Anthropic
Medium
Software Engineer

Convert stack samples to trace events

Question Implement convertToTrace(samples) that, given a chronologically ordered vector of stack samples (each sample contains a timestamp and a call-...

Coding & AlgorithmsStacks & QueuesSimulation & State Machines
219
4
1296 people solved
Jul 29, 2025
DoorDash logo
DoorDash
Hard
Software Engineer Locked

Explain Why You Are Changing Roles

Craft a credible, respectful reason for changing roles that links proven experience with specific growth and ownership goals.

Behavioral & Leadership
1
0
24 people solved
Sep 1, 2026
Amazon logo
Amazon
Hard
Software EngineerSenior+ Locked

Implement a Half-Open Interval Range Module

Implement a range module over half-open intervals with add, remove, and full-coverage query operations. Handle merging adjacent ranges, splitting trac...

Coding & Algorithms
7
0
85 people solved
Jul 5, 2026
Google logo
Google
Medium
Software EngineerIntern Locked

Find Minimum Rooms Needed

This question evaluates understanding of interval scheduling and conflict detection in time ranges, along with algorithmic reasoning and appropriate d...

Coding & AlgorithmsIntervals & Scheduling
178
1
1495 people solved
Mar 19, 2026
OpenAI logo
OpenAI
Medium
Machine Learning Engineer Locked

Implement 1NN with NumPy

This question evaluates implementing a 1-nearest-neighbor classifier with NumPy, testing skills in vectorized numerical computation, distance metrics,...

Machine LearningML Coding
317
4
3000 people solved
May 19, 2026
Disney logo
Disney
Medium
Software Engineer

Discuss Your Proudest Project and Interest in a Role

Describe the project you are most proud of and explain why you are interested in the role you are interviewing for. Connect your contribution and lear...

Behavioral & LeadershipProject Deep DiveMotivation & Fit
0
0
8 people solved
Sep 8, 2026
Amazon logo
Amazon
Medium
Software Engineer

A Problem That Needed Deep Analysis: Knowing You Focused on the Right Things

Tell me about a problem you had to solve that required in-depth thought and analysis. How did you know you were focusing on the right things, and what...

Behavioral & LeadershipAmbiguity & Decision MakingProject Deep Dive
0
0
9 people solved
Sep 10, 2026
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