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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
12.2k
Companies
569
Updated
10.14.2026
12.2k Questions 569 Companies10.14.2026
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
Instacart logo
Instacart
Medium
Software Engineer

Evaluate dependent variable expressions

Question Given a target variable name and a list of assignment strings of the form 'Ti = expression' where the expression is either a number, a single...

Coding & Algorithms
32
0
163 people solved
Jul 29, 2025
Waymo logo
Waymo
Medium
Software Engineer

Find Shortest Paths to Target Nodes

You are given a weighted directed graph representing distances between nodes. - There are n nodes labeled from 0 to n - 1. - edges[i] = [u, v, w] mean...

Coding & Algorithms
8
0
88 people solved
Apr 8, 2026
Google logo
Google
Medium
Software Engineer

Maintain streaming median and loosemedian

Maintain streaming median and loosemedian Design a data structure for an online stream of positive integers supporting insert (x). After each insertio...

Coding & AlgorithmsHeaps & Priority Queues
18
0
129 people solved
Aug 8, 2025
Citadel logo
Citadel
Medium
Software Engineer

Explain hash maps and solve array intersection

1) Explain the internal implementation of a hash map: underlying array/bucket layout, hash function choice, collision resolution strategies (separate ...

Coding & AlgorithmsData Structure DesignArrays & Strings
19
0
164 people solved
Jul 26, 2025
Microsoft logo
Microsoft
Medium
Software EngineerSenior+

Design device telemetry pipeline for real-time and batch

Design a distributed system that ingests telemetry from millions of devices and supports both: - Real-time analytics (near-real-time dashboards/alerts...

System DesignData Ingestion & CDCBatch & Stream Processing
7
0
135 people solved
Dec 17, 2025
Applied Intuition logo
Applied Intuition
Medium
Software Engineer Locked

Find first and last occurrence in sorted array

This question evaluates proficiency in array search algorithms and algorithmic reasoning, specifically the use of binary search techniques and careful...

Coding & Algorithms
4
0
47 people solved
Feb 12, 2026
SoFi logo
SoFi
Hard
Software Engineer

Implement a React CRUD Table

Implement a React CRUD Table React CRUD Data Table — Build and Explain Context Design and implement a React application that renders a data table with...

Software Engineering FundamentalsReact & UI FrameworksState Management
19
0
144 people solved
Jul 16, 2025
Salesforce logo
Salesforce
Medium
Software Engineer

Describe the Team Environment in Which You Do Your Best Work

Prompt Describe the team environment in which you do your best work. Go beyond a list of pleasant qualities: explain the concrete behaviors, decision ...

Behavioral & Leadership
2
0
20 people solved
Apr 11, 2026
DoorDash logo
DoorDash
Medium
Software Engineer

Compute Driver Pay with Double-Pay Windows

You are building payroll logic for a delivery platform. Given a list of order records for one delivery driver, compute the total amount the driver sho...

Coding & Algorithms
4
0
83 people solved
Mar 8, 2026
Amazon logo
Amazon
Medium
Software Engineer

Implement two array-cost minimization algorithms

Implement two array-cost minimization algorithms that appeared back-to-back in an AWS SDE online assessment. Each can be solved independently. Part 1 ...

Coding & Algorithms
11
0
87 people solved
Aug 7, 2025
OpenAI logo
OpenAI
Medium
Software Engineer Locked

Design a Conversational AI Assistant

This question evaluates system design, distributed systems, and real-time inference-serving competencies for building large-scale conversational AI pr...

System DesignReal-Time SystemsLLM Applications
24
0
219 people solved
Jan 29, 2026
Uber logo
Uber
Medium
Software Engineer

Count paths with prime-ending jumps

You are given an integer n representing the top of a staircase, where you start at step 0 and want to land exactly on step n. In one move, you may jum...

Coding & Algorithms
4
0
51 people solved
Jan 15, 2026
DoorDash logo
DoorDash
Easy
Data ScientistSenior+ Locked

Find Monthly Top Customers Excluding High-Frequency Users

A PostgreSQL interview problem about ranking monthly customers while excluding users who meet a high-frequency threshold. Candidates must build the el...

Data Manipulation (SQL/Python)SQL
5
0
60 people solved
Jul 27, 2026
Amazon logo
Amazon
Medium
Data Scientist

Design idempotent daily loads with deduping

You need to load the last 7 days of orders into a large fact table from a noisy staging feed. Assume today is 2025-09-01. Requirements: idempotent rer...

Data Manipulation (SQL/Python)ETL & Data PipelinesData Cleaning & Wrangling
7
0
121 people solved
Oct 13, 2025
Microsoft logo
Microsoft
Hard
Software Engineer Locked

Solve cache, grid path, and substring problems

This multipart question evaluates algorithmic problem-solving and data structure design skills, covering a capacity-bounded cache with eviction behavi...

Coding & Algorithms
5
0
70 people solved
Feb 11, 2026
Fleetworks logo
Fleetworks
Medium
Software Engineer Locked

Fetch and Rank Articles from a Paginated API

Fetch paginated article data from an HTTP API and rank usable titles by comment count with deterministic tie-breaking. Handle title fallback, missing ...

Software Engineering Fundamentals
4
0
39 people solved
May 14, 2026
Snapchat logo
Snapchat
Medium
Machine Learning Engineer

Determine and print expression to reach target

You are given four numbers and a target T (e.g., 24). Using +, −, ×, ÷ and parentheses, and using each number exactly once, determine whether you can ...

Coding & Algorithms
6
0
71 people solved
Sep 6, 2025
Amazon logo
Amazon
Medium
Software Engineer Locked

Dive Deep to Find the Root Cause of a Problem

Describe a technical investigation in which the first plausible explanation was incomplete or wrong. Trace the symptoms, competing hypotheses, evidenc...

Behavioral & Leadership
0
0
14 people solved
Jul 31, 2026
Arista logo
Arista
Easy
Software Engineer

Remove Target Values from a Linked List

Given the head of a singly linked list and an integer target, remove every node whose value equals target and return the new head of the list. The tar...

Coding & Algorithms
6
0
76 people solved
Mar 25, 2026
Amazon logo
Amazon
Hard
Applied ScientistSenior+

Explain Collaborative Filtering Approaches

Collaborative Filtering for Recommendations: Approaches, Losses, Regularization, Cold Start, Bias, Evaluation, and Scale Context You are designing a r...

Machine LearningRecommendation SystemsModel Evaluation
17
0
117 people solved
Sep 6, 2025
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