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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
18.6k
Companies
980
Updated
11.12.2026
18.6k Questions 980 Companies11.12.2026
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
Hard
Software Engineer Locked

Design an Inventory Management System

Design an inventory platform for receipts, reservations, releases, adjustments, fulfillment, and movement history across locations. The case examines ...

System DesignSystem Design FundamentalsTransactions & Isolation
9
0
126 people solved
Jun 30, 2026
Coinbase logo
Coinbase
Easy
Software Engineer

Clarify CodeSignal partial credit and score access

CodeSignal Multi‑Level Task Scoring and Score Visibility Context You are completing a multi‑level coding task on CodeSignal as part of a take‑home ass...

Behavioral & LeadershipTesting & Quality
30
0
211 people solved
Sep 6, 2025
Capital One logo
Capital One
Medium
Data Scientist

Design theme-park profit model and bid decision

Theme Park Pricing and Land-Acquisition Case Context You manage pricing analytics for a Disney-like theme park. Baseline demand is steady. A land auct...

Analytics & ExperimentationBusiness Case AnalysisGrowth & Monetization
22
0
145 people solved
Oct 13, 2025
CVS Health logo
CVS Health
Medium
Data Scientist

Calculate Medical Claims by Age and Gender in 2024

MEMBERSHIP +----+----------+--------+---------+ | id | age_band | gender | zipcode | +----+----------+--------+---------+ | 1 | 18-25 | F | 9...

Data Manipulation (SQL/Python)
80
0
320 people solved
Aug 4, 2025
Roblox logo
Roblox
Medium
Software Engineer Locked

Design a Scalable Like Counter

This question evaluates a candidate's competence in large-scale system design, covering scalability, high-throughput write handling, read-optimized co...

System DesignSystem Design FundamentalsData Ingestion & CDC
11
0
133 people solved
Sep 25, 2025
Amazon logo
Amazon
Easy
Software Engineer Locked

Describe Delivering Under a Tight Deadline

This question evaluates ownership, judgment, prioritization, and the ability to deliver results under time pressure, including how the candidate balan...

Behavioral & LeadershipOwnership & Execution
19
4
303 people solved
May 2, 2026
Stripe logo
Stripe
Medium
Software Engineer Locked

How to find the cheapest flight within K stops

This question evaluates understanding of graph algorithms and constrained shortest-path modeling, focusing on reasoning about weighted directed edges,...

Coding & AlgorithmsGraphsDynamic Programming
20
0
187 people solved
Feb 11, 2026
OpenAI logo
OpenAI
Hard
Data Scientist Locked

Assess free-month promotion impact

This question evaluates a data scientist's competency in experimental design, causal inference, metric definition and prioritization, bias identificat...

Analytics & ExperimentationCausal InferenceMetrics & KPIs
19
0
288 people solved
Jan 22, 2026
Two Sigma logo
Two Sigma
Medium
Data Scientist

Analyze NYC taxi trips efficiently over last 7 days

Use today = 2025-09-01. Consider NYC taxi trip data over the last 7 days inclusive (2025-08-26 to 2025-09-01, America/New_York). You receive two datas...

Data Manipulation (SQL/Python)
4
0
73 people solved
Oct 13, 2025
Teradata logo
TeradataGoogleAmazon

Also asked at Amazon, Uber, Meta

Medium
Software Engineer

Reach the Last Index with Prime Jumps

Reach the Last Index with Prime Jumps You are given an integer array nums of length n. Start at index 0 and reach index n - 1 using as few jumps as po...

Coding & AlgorithmsGraphsMath & Number Theory
0
0
5 people solved
Amazon logo
Amazon
Hard
Software Engineer Locked

Responding to a Difficult Engineering Challenge

Build a concrete behavioral answer about diagnosing and resolving a difficult engineering challenge under uncertainty. The prompt probes personal cont...

Behavioral & Leadership
15
0
110 people solved
Aug 30, 2026
Apple logo
Apple
Medium
Machine Learning Engineer Locked

Design a CPA system for ad bidding

This question evaluates a candidate's competency in ML system design for online advertising, covering modeling conversion probability and value (e.g.,...

ML System Design
7
0
108 people solved
Mar 1, 2026
OpenAI logo
OpenAI
Medium
Software Engineer

Design a Reliable Payment Processing System

Design a Reliable Payment Processing System Design a payment-processing service for merchants. A client creates a payment, the service submits it to a...

System Design
8
0
79 people solved
May 2, 2026
Meta logo
Meta
Hard
Data Engineer

Write SQL for car rental utilization by city

SQL / Data Query Prompt (Car Rental) You are given four tables: user - user_id location - location_id - city car - car_id - car_size (e.g., compact, m...

Coding & AlgorithmsSQL
15
3
228 people solved
Dec 1, 2025
Illumio logo
Illumio
Hard
Software EngineerSenior+ Locked

Design a Time-Series Database

Design a time-series database for sustained measurement ingest and range queries across labeled series. Explore partitioning, immutable storage, label...

System Design
1
0
37 people solved
Jul 9, 2026
DoorDash logo
DoorDash
Medium
Software Engineer

Find max distance between alive tree nodes

Find max distance between alive tree nodes Given a binary tree, define alive nodes. Base case: alive nodes are the leaves. Find the maximum distance (...

Coding & Algorithms
12
0
100 people solved
Jul 28, 2025
Microsoft logo
Microsoft
Medium
Software Engineer Locked

Reconstruct DNA from tagged fragments

This question evaluates understanding of sequence reconstruction, graph modeling, and traversal/orientation constraints, focusing on ordering labeled ...

Coding & AlgorithmsGraphs
9
0
159 people solved
Mar 1, 2026
Zomato logo
Zomato
Medium
Product Manager

Growing Restaurant and Delivery-Partner Supply on Zomato's Food Delivery Marketplace

You are a product manager at Zomato. How would you strengthen the supply side of its marketplace? `hint Pin down what supply means On a food delivery ...

Product Design & StrategyGrowth & Monetization
1
0
8 people solved
May 1, 2026
Two Sigma logo
Two Sigma
Medium
Software Engineer

Autoscale a Server Fleet from Throughput Readings

You run a service on a fleet of identical servers behind a load balancer. Each server can handle at most limit units of throughput. A monitoring syste...

Coding & Algorithms
8
0
89 people solved
Sep 19, 2025
Google logo
Google
Medium
Data Scientist

Simulate Coin Flips to Determine Fairness via Empirical Distribution

Scenario You must test whether a coin is fair by simulation. Question Write code that repeatedly simulates n coin flips, records the number of heads, ...

Coding & AlgorithmsHypothesis TestingProbability
14
0
135 people solved
Aug 4, 2025
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