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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
Adobe logo
Adobe
Medium
Product Manager

Adobe feature that lets people with no design training make polished visuals

You are a product manager at Adobe. Plenty of people who are not designers still have to produce visuals, such as social posts, flyers, presentations ...

Product Design & StrategyProduct SenseAI Product Management
1
0
11 people solved
Oct 4, 2026
Oracle logo
Oracle
Medium
Software EngineerSenior+ Locked

Resolve Conflict Within a Team

Tell a fair, specific story about a team conflict that materially affected the work. Explain the underlying disagreement, your own contribution and mi...

Behavioral & Leadership
2
0
20 people solved
Aug 21, 2026
Gong logo
Gong
Medium
Software EngineerSenior+

Driving a Project Forward When Goals and Requirements Are Ambiguous

Tell the interviewer about a project or role in which the goal, the requirements, the ownership or the path forward was unclear, and walk through how ...

Behavioral & LeadershipAmbiguity & Decision MakingOwnership & Execution
1
0
9 people solved
Aug 25, 2026
Robinhood logo
Robinhood
Hard
Software Engineer

Design a Distributed Scheduler with At-Most-Once Runs

Design a distributed background-job scheduler with one-time and recurring jobs, an execution SLA, logs, cancellation, and subscriber notifications. Th...

System DesignJob Scheduling & WorkflowsDistributed Transactions & Idempotency
4
0
52 people solved
Apr 14, 2026
Google logo
Google
Medium
Software Engineer

Maximize coins collected by tokens jumping +3

You are given a single-player board game represented by a string board of length N (1 ≤ N ≤ 100). Each character is one of: - '.': empty cell - 'T': a...

Coding & AlgorithmsGreedyArrays & Strings
18
0
180 people solved
Feb 13, 2026
Circle logo
Circle
Hard
Software Engineer

Design flight-price search service

Design flight-price search service System Design: Cheapest Flight Search Across Multiple Providers Context Design a backend system that searches multi...

System DesignSearch & Feed SystemsCaching
32
0
298 people solved
Jul 17, 2025
Goldman Sachs logo
Goldman Sachs
Medium
Product Manager

Word Compression Algorithm

Algorithm Prompt: String Compression and Decompression with Run-Length Encoding Design algorithms to compress and decompress a string using run-length...

Product / Decision MakingArrays & StringsParsing & Interpreters
12
0
171 people solved
Jul 4, 2025
Goldman Sachs logo
Goldman Sachs
Medium
Software EngineerSenior+ Locked

Design a Workspace Resource Manager

This question tests a candidate's ability to design and implement a tree-structured data model with efficient CRUD operations in memory. It evaluates ...

Coding & Algorithms
9
0
78 people solved
Jun 8, 2026
Optiver logo
Optiver
Hard
Software Engineer

Design and backtest a trading strategy

Minute-Level Mean-Reversion Strategy: Design, Backtest, Validation, and Significance Context You are given minute-level OHLCV data (open, high, low, c...

Analytics & ExperimentationPortfolio Construction & Alpha ResearchHypothesis Testing
29
0
548 people solved
Aug 13, 2025
Capital One logo
Capital One
Medium
Software Engineer Locked

Design a mobile banking app backend

This question evaluates a candidate's competency in designing secure, highly available backend architecture for financial services, including API and ...

System DesignPayments & LedgersDistributed Transactions & Idempotency
30
0
377 people solved
Feb 12, 2026
Stripe logo
Stripe
Medium
Data Scientist

Choose threshold under costs and uncertainty

Incentive Targeting: Threshold Selection, Uncertainty, Calibration, and Drift Context: You deploy a model that sends an incentive to predicted positiv...

Statistics & Math
6
0
65 people solved
Oct 13, 2025
OpenAI logo
OpenAI
Medium
Machine Learning Engineer Locked

Simulate Grid Infection

This question evaluates skills in multi-source breadth-first search, synchronous simulation updates, boundary handling, and off-by-one correctness wit...

Coding & AlgorithmsGrids & MatricesSimulation & State Machines
35
0
238 people solved
Mar 9, 2026
Goldman Sachs logo
Goldman Sachs
Medium
Software Engineer Locked

Return the First Non-Repeating Character

Return the first character whose total frequency is one, preserving input order and defining the result when every character repeats.

Coding & AlgorithmsArrays & Strings
14
0
104 people solved
Sep 1, 2026
Google logo
Google
Medium
Software Engineer

Design a multi-timer using single underlying timer

You are given a Timer class that has access to a single underlying system timer API that can only keep one active timer at a time. Underlying single-t...

Software Engineering FundamentalsHeaps & Priority QueuesData Structure Design
28
0
209 people solved
Dec 4, 2025
TikTok logo
TikTok
Easy
Software EngineerIntern Locked

Explain TLS Handshakes and HTTPS Traffic Inspection

Explain TLS handshakes, certificate validation, and symmetric traffic protection, then distinguish HTTPS proxy interception from passive decryption.

Software Engineering FundamentalsCryptographyNetworking
4
0
63 people solved
Sep 5, 2026
Google logo
Google
Medium
Data ScientistSenior+

Can bootstrap help reduce variance

An interviewer asks: “Can bootstrap help reduce variance?” Answer this question precisely. Distinguish between: 1) Using the bootstrap to estimate var...

Statistics & MathSampling & Estimation
23
0
273 people solved
Nov 24, 2025
LinkedIn logo
LinkedIn
Medium
Software EngineerSenior+ Locked

Compute graph distance and impacted services

This question evaluates proficiency in graph algorithms and traversal (shortest-path/BFS and cycle handling), file-path/tree modeling, dependency grap...

Coding & AlgorithmsGraphs
22
0
246 people solved
Dec 26, 2025
Pinterest logo
Pinterest
Easy
Data Analyst

Compute percent of first-cancel users who never return

You’re analyzing appointment behavior for a scheduling product. Table appointments - appointment_id (STRING, PK) - user_id (STRING) - scheduled_start_...

Data Manipulation (SQL/Python)
10
0
70 people solved
Oct 26, 2025
Rippling logo
Rippling
Hard
Software Engineer Locked

Solve listed algorithm problems

This set of problems evaluates algorithmic problem-solving skills across selection and order-statistics, graph algorithms and traversals, connected-co...

Coding & AlgorithmsBinary SearchGraphs
34
0
234 people solved
Feb 12, 2026
Google logo
GoogleBloomberg
Easy
Software Engineer

First Index Equal to Its Value's Digit Sum

First Index Equal to Its Value's Digit Sum You are given an integer array nums, indexed from zero. Return the smallest index i for which the sum of th...

Coding & AlgorithmsArrays & StringsMath & Number Theory
0
0
4 people solved
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