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

"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_

"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"

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

"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."

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

"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."

CarlosFull Stack, Shopify

"The solution quality is insane. It covers approach, edge cases, time complexity, follow-ups. Nothing else comes close."

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."

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

"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."

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

"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."

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

"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."

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

_The_TaNk_

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

"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."

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

CarlosFull Stack, Shopify

"The solution quality is insane. It covers approach, edge cases, time complexity, follow-ups. Nothing else comes close."

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."

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

"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."

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

"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."

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

"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."

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

Amazon

Medium

Software Engineer

Demonstrate decision-making and collaboration behaviors

Behavioral & Leadership (Technical Screen) — CARL Format You are interviewing for a Software Engineer technical screen. Answer each prompt using the C...

Behavioral & Leadership

Implement multiplication without using the multiplication operator

Implement int multiply(int a, int b) without using * or /. You may use +, −, bitwise operators, and shifts. Requirements: - Handle negatives, zero, an...

Schedule and execute future payments

Schedule and execute future payments System Design: Scheduled Payments Execution Context You are building a balance-transfer service (e.g., an interna...

System DesignPayments & LedgersJob Scheduling & Workflows

Update No-Intercept Regression Slopes Across Batches

Data arrives in M batches. Each x_batches[b] and y_batches[b] is a matrix with the same number N of columns and the same number of rows within batch b...

Coding & Algorithms

49 people solved

Apr 15, 2026

Resolve Poor Team Collaboration: Identify Issues, Implement Solutions

Resolve Poor Team Collaboration: Identify Issues, Implement Solutions Behavioral & Leadership Interview (Data Scientist) Scenario You are interviewing...

Behavioral & Leadership

Implement percentage RMSE and bootstrap its CI

Given a CSV with columns [country, actual_revenue, predicted_revenue], define percentage RMSE as pRMSE = sqrt(mean_i((pred_i/actual_i − 1)^2)). a) Imp...

Implement island counting with BFS and DFS

Question You are given an m x n grid of characters where '1' represents land and '0' represents water. Count the number of distinct islands (connected...

Coding & AlgorithmsGrids & Matrices

Machine Learning EngineerSenior+

Compare Mixture-of-Experts and Dense Transformers

Compare Mixture-of-Experts and Dense Transformers Compare mixture-of-experts and dense Transformer models. Explain capacity, compute, routing, memory,...

Software Engineer Locked

Solve sliding-window and disjoint-string-pairs tasks

This question evaluates proficiency in string-processing algorithms, sliding-window techniques, efficient set or bitmask representations, and combinat...

Coding & AlgorithmsTwo Pointers & Sliding WindowBit Manipulation

Software EngineerSenior+ Locked

Implement store, evaluator, and parser

This question evaluates implementation skills in data structures and algorithms, covering time-based versioning and TTL in an in-memory key-value stor...

Coding & AlgorithmsKey-Value StoresParsing & Interpreters

Detect intersection of two linked lists

Given two singly linked lists that may converge to share a common tail, determine whether they intersect and return the first node at which they join....

Experiment on increasing order notifications

Experiment Design: Increasing Order‑Related Push Notifications Context You are asked to design, measure, and make decisions about increasing order‑rel...

Analytics & ExperimentationExperiment Design (A/B Testing)Experiment Analysis & Readout

Design locker allocation service

Design a Best-Fit Locker Assignment Component Context You are designing the locker-assignment component for a Locker OS used at physical locker banks ...

Build a causal ML pipeline end-to-end

Policy Targeting from Causal Inference to Production Context You completed a causal-inference project estimating the effect of a binary marketing trea...

Analytics & Experimentation

Should the mulch promotion continue?

A home-improvement retailer is running a seasonal promotion on bagged mulch. Business context - Regular price: $3.50 per bag - Promo price: $2.00 per ...

Analytics & Experimentation

Write SQL with window functions for analytics

Given a table events(user_id, event_time, event_type, value), write SQL to: a) compute each user's rolling 7-day sum of value by day, b) rank each use...

Data Manipulation (SQL/Python)

Applied Scientist Locked

Design an advertiser metrics tracking platform

This question evaluates object-oriented design competencies such as domain modeling, class responsibilities and relationships, service interfaces, ext...

Software Engineering FundamentalsLow-Level Design (OOP)Distributed Transactions & Idempotency

Compute gala vs online break-even donors

A nonprofit must choose one of two fundraising options. Option A (Gala): capacity 100 attendees; fixed cost $20,000; variable cost $100 per attendee. ...

Learning from Failure & Conflict

Google Product Manager Behavioral Screen: Failure, Conflict, and Mission Fit You are in an early behavioral interview for a Product Manager role. Answ...

Behavioral & LeadershipFailure & LearningMotivation & Fit

454 people solved

Jul 4, 2025

Solve Two Backtracking Array Problems

You will solve two independent coding problems. For each problem, first discuss edge cases, then implement a correct solution, and finally explain how...

Coding & AlgorithmsBacktracking & RecursionTwo Pointers & Sliding Window

322 people solved

Apr 27, 2026

Tech Interview Questions

Demonstrate decision-making and collaboration behaviors

Implement multiplication without using the multiplication operator

Schedule and execute future payments

Update No-Intercept Regression Slopes Across Batches

Resolve Poor Team Collaboration: Identify Issues, Implement Solutions

Implement percentage RMSE and bootstrap its CI

Implement island counting with BFS and DFS

Compare Mixture-of-Experts and Dense Transformers

Solve sliding-window and disjoint-string-pairs tasks

Implement store, evaluator, and parser

Detect intersection of two linked lists

Experiment on increasing order notifications

Design locker allocation service

Build a causal ML pipeline end-to-end

Should the mulch promotion continue?

Write SQL with window functions for analytics

Design an advertiser metrics tracking platform

Compute gala vs online break-even donors

Learning from Failure & Conflict

Solve Two Backtracking Array Problems

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