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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 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
Snapchat logo
Snapchat
Hard
Software Engineer Locked

Find minimum-latency path across dependent services

This question evaluates understanding of graph algorithms and shortest-path computation on weighted directed graphs, including handling cycles, multip...

Coding & Algorithms
4
0
62 people solved
Feb 11, 2026
ByteDance logo
ByteDance
Easy
Software Engineer

Describe a Favorite Project and Its Hardest Technical Challenge

Describe a Favorite Project and Its Hardest Technical Challenge Prompt Tell me about a project you are especially proud of or enjoyed working on. Expl...

Behavioral & Leadership
1
0
21 people solved
Apr 17, 2026
Pinterest logo
Pinterest
Medium
Software Engineer Locked

Find First Prefix-Matching Word

This question evaluates proficiency in string processing and prefix-matching within arrays, testing the ability to identify the first occurrence and h...

Coding & AlgorithmsArrays & Strings
13
0
107 people solved
Feb 24, 2026
Netflix logo
Netflix
Hard
Software EngineerSenior+

Compute Earliest Completion Times

You are given n tasks numbered from 0 to n - 1. Each task i has a positive duration duration[i]. You are also given a list of prerequisite relationshi...

Coding & Algorithms
5
0
48 people solved
Apr 5, 2026
Bridgewater logo
Bridgewater
Medium
Machine Learning Engineer Locked

Diagnose Strong Validation and Weak Production Performance

Diagnose why a model shows strong validation metrics but performs poorly in production by ranking and testing competing hypotheses. Examine leakage, s...

Machine Learning
12
0
86 people solved
Jul 8, 2026
LinkedIn logo
LinkedIn
Medium
Software Engineer Locked

Design a Ranked Social Feed with Hybrid Fan-Out

Design a read-heavy ranked social feed that gives authors immediate visibility for their own new posts. Explore hybrid fan-out, durable content and fo...

System Design
4
0
52 people solved
May 13, 2026
Meta logo
Meta
Medium
Data Scientist

Identify Algorithms for Detecting Malicious Duplicated Content

Identify Algorithms for Detecting Malicious Duplicated Content Detecting Malicious Duplicated Text (DOT) Scenario You are selecting technical approach...

Machine Learning
8
0
67 people solved
Aug 4, 2025
Discord logo
Discord
Hard
Software Engineer

Explain C++ alignment and ABI stability

You are interviewing for a senior C++ / systems role. The interviewer asks two low-level fundamentals questions: 1. C++ memory alignment and padding ...

Software Engineering FundamentalsMemory ManagementProgramming Languages
12
0
95 people solved
Dec 8, 2025
Google logo
Google
Hard
Data Scientist

Diagnose and reverse an adoption-rate decline

Problem: Investigating a 7pp Drop in Google Meet Enterprise Adoption Rate Context Over the last 4 calendar weeks, enterprise adoption rate has fallen ...

Analytics & ExperimentationMetric DiagnosticsCausal Inference
6
0
106 people solved
Oct 13, 2025
Shein logo
Shein
Medium
Site Reliability Engineer

Describe an On-Call Incident

Describe a real on-call incident you handled as part of site reliability or production support. Explain how the problem was detected, what alerts or m...

Behavioral & LeadershipReliability & SREObservability
5
0
104 people solved
Apr 3, 2026
Capital One logo
Capital One
Easy
Data Scientist

Handle priority changes and unclear deadlines

Behavioral scenarios (job fit / leadership) Answer the following situational questions. Use a structured approach (e.g., STAR: Situation–Task–Action–R...

Behavioral & Leadership
6
0
62 people solved
Sep 2, 2025
Microsoft logo
Microsoft
Medium
Software Engineer

Count k for consecutive-sum generator

An array generator service produces a consecutive-integers array starting at a positive integer k: [k, k+1, ..., k+m−1] for some m ≥ 1. The service re...

Coding & AlgorithmsMath & Number Theory
17
0
124 people solved
Sep 6, 2025
Microsoft logo
Microsoft
Hard
Software Engineer Locked

Compute product of array except self

This question evaluates understanding of array manipulation, modular arithmetic, and algorithmic optimization by requiring computation of per-element ...

Coding & Algorithms
3
0
58 people solved
Feb 11, 2026
PayPal logo
PayPal
Medium
Data Scientist

Identify Session with Maximum Overlapping Sessions Count

sessions | session_id | start_time | end_time | | 1 | 2023-01-01 09:00:00 | 2023-01-01 10:00:00 | | 2 | 2023-0...

Data Manipulation (SQL/Python)
87
0
510 people solved
Aug 4, 2025
Amazon logo
Amazon
Hard
Data Scientist

Drive stakeholder alignment under trade-offs

Decision Framework: Training Platform (Standard Vendor vs. Premium Vendor vs. Internal Build) Context You are responsible for driving a cross-function...

Behavioral & Leadership
6
0
59 people solved
Oct 13, 2025
Capital One logo
Capital One
Hard
Data Scientist

Build and validate a binary classifier

ML Pipeline with Grouped CV, Imbalance Handling, Calibration, and Thresholding Context: You have a labeled dataset where the target is is_active_30d (...

Machine Learning
10
0
70 people solved
Oct 13, 2025
Uber logo
Uber
Medium
Machine Learning Engineer

Explain XGBoost depth, regularization, and dropout

ML Conceptual Questions (Onsite) Answer the following: (a) Gradient-boosted decision trees: How does maximum tree depth affect bias/variance, overfitt...

Machine LearningML FundamentalsNeural Networks & Training
11
0
159 people solved
Sep 6, 2025
TikTok logo
TikTok
Medium
Data Scientist

Implement streaming SRM detector with late events

Implement a streaming detector for sample ratio mismatch (SRM) across many concurrent experiments. Input is two topic-partitioned streams: assignments...

Coding & AlgorithmsHypothesis TestingBatch & Stream Processing
5
0
95 people solved
Oct 13, 2025
Meta logo
Meta
Hard
Software EngineerSenior+

Design a secure ML data platform

System Design: Secure, Ethical, Multi‑Tenant ML Data and Inference Platform Context Design a cloud-based ML platform used by multiple internal product...

ML System Design
8
0
59 people solved
Sep 6, 2025
Point72 logo
Point72
Easy
Data ScientistIntern

Find kth missing integer and redundant operations

You are given two independent coding tasks. Task 1: K-th missing number You are given an integer array nums (not necessarily sorted) containing distin...

Coding & Algorithms
13
0
95 people solved
Oct 20, 2025
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