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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
11.9k
Companies
570
Updated
10.05.2026
11.9k Questions 570 Companies10.05.2026
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
Amazon logo
Amazon
Medium
Data Scientist

Design an A/B Test for Dashboard Engagement Impact

A/B Test for Energy Dashboard Engagement A product team is launching a redesigned energy-usage dashboard in a consumer app and wants to measure whethe...

Analytics & Experimentation
13
0
64 people solved
Jul 12, 2025
Meta logo
Meta
Medium
Machine Learning Engineer Locked

Compute the next lexicographic permutation

This question evaluates understanding of permutations and lexicographic ordering, in-place array manipulation, and algorithmic reasoning about time an...

Coding & AlgorithmsArrays & Strings
8
0
75 people solved
Feb 12, 2026
TikTok logo
TikTok
Medium
Product Manager

Secretary Problem – Selecting the Most Valuable Painting

Optimal Stopping Prompt: Choosing a Painting from 100 Rooms You are invited to an island with 100 rooms, each containing one painting. You may enter t...

Product / Decision Making
14
0
52 people solved
Jul 4, 2025
ByteDance logo
ByteDance
Medium
Software Engineer

How do you assess database system stability?

You are responsible for a production database (or database platform) used by multiple services. How would you determine whether the database system is...

Software Engineering Fundamentals
2
0
52 people solved
Feb 28, 2026
Pinterest logo
Pinterest
Medium
Data Scientist

Implement LRUCache with O(1) Operations and Thread Safety

Scenario High-traffic API needs constant-time eviction cache. Question Implement an LRUCache supporting get(key) and put(key,val) in O( 1). Describe ...

Coding & Algorithms
19
0
89 people solved
Jul 12, 2025
Meta logo
Meta
Medium
Data Scientist

Calculate Daily Harmful Content View Percentage

VIDEOS +----+-------------+------------+ | id | uploader_id | is_harmful | +----+-------------+------------+ | 1 | 101 | true | | 2 | ...

Data Manipulation (SQL/Python)
3
1
31 people solved
Aug 4, 2025
TikTok logo
TikTok
Medium
Software Engineer

Compute waits and find distance-k node pairs

Part 1 — Array next-higher wait: Given an integer array A where A[i] is the measurement for day i (0-indexed), return an array W of the same length su...

Coding & Algorithms
4
0
46 people solved
Sep 6, 2025
Flatiron Health logo
Flatiron Health
Medium
Data Scientist

Demonstrate concise leadership

You receive feedback that in case interviews you ask many clarifying questions, take a few seconds before answering, and your answers are not concrete...

Behavioral & Leadership
2
0
53 people solved
Oct 13, 2025
Meta logo
Meta
Medium
Data Scientist

Explain Algorithm's Disproportionate Impact on Demographic Segments

Explain Algorithm's Disproportionate Impact on Demographic Segments Ad-Ranking A/B Test: Interpreting Heterogeneous CTR Lifts Context You ran a standa...

Analytics & Experimentation
76
0
260 people solved
Aug 4, 2025
Amazon logo
Amazon
Hard
Data Scientist

Explain complex tech to non-technical stakeholder

Behavioral: Explain a Complex Modeling Decision to a Non‑Technical Sales Leader You are asked to explain a complex modeling decision from a résumé pro...

Behavioral & Leadership
2
0
34 people solved
Oct 13, 2025
Capital One logo
Capital One
Medium
Data Scientist

Describe a project you’re most proud of

Describe the project you’re most proud of using the STAR method. Specify the exact goal and success metrics up front; quantify at least two outcomes (...

Behavioral & Leadership
7
0
49 people solved
Oct 13, 2025
Meta logo
Meta
Medium
Data Scientist

Compare two ad insertion strategies

Ad Insertion Strategies for a 100-Post Feed You are evaluating two ad-insertion strategies on a feed with 100 posts: - Strategy A (Stochastic): Indepe...

Analytics & Experimentation
2
0
40 people solved
Oct 13, 2025
Meta logo
Meta
Medium
Data Scientist

Evaluate emoji reactions launch

A messaging app plans to introduce an emoji reaction feature: users can long-press a message for 5 seconds and attach an emoji instead of sending a te...

Analytics & Experimentation
3
0
38 people solved
Oct 13, 2025
Uber logo
Uber
Medium
Software Engineer Locked

Design Nearby Restaurant Search

This question evaluates competency in large-scale system design for low-latency geospatial search, covering concepts such as geospatial indexing, cand...

System DesignGeo & Delivery SystemsRanking Models
19
0
164 people solved
May 1, 2026
LinkedIn logo
LinkedIn
Medium
Software Engineer

Differentiate Java final, finalize, finally

Differentiate Java's final, finalize, and finally. Define what final means for variables, methods, and classes and give examples; explain what finaliz...

Coding & AlgorithmsProgramming Languages
10
0
94 people solved
Sep 6, 2025
Uber logo
Uber
Easy
Data ScientistSenior+

Measure feature impact with switchback, PSM, and CACE

You work at a ridesharing company and want to measure the impact of a new membership feature on rides-per-user (RPU). Across the parts below you will ...

Analytics & ExperimentationCausal InferenceExperiment Design (A/B Testing)
46
0
316 people solved
Dec 11, 2025
TikTok logo
TikTok
Medium
Software Engineer

Explain project choices, metrics, and AI usage

Behavioral / Project deep-dive You’ll be asked to walk through a recent project you worked on (preferably one with meaningful technical and business i...

Behavioral & LeadershipProject Deep DivePrioritization & Tradeoffs
9
0
84 people solved
Mar 1, 2026
Amazon logo
Amazon
Hard
Product Manager

Amazon New-Service Launch Cases

Amazon New-Service Launch Cases You are asked to outline how Amazon could launch three distinct products: a restaurant table-booking app, a flower-del...

Product / Decision Making
9
0
75 people solved
Jul 4, 2025
Meta logo
Meta
Medium
Software Engineer

Solve grid shortest path and robot cleaning

Question LeetCode 1091. Shortest Path in Binary Matrix; LeetCode 489. Robot Room Cleaner https://leetcode.com/problems/shortest-path-in-binary-matrix/...

Coding & Algorithms
5
0
59 people solved
Aug 4, 2025
Uber logo
Uber
Medium
Frontend Engineer Locked

Implement a Constant-Time Random Pool

This question evaluates a candidate's ability to design and implement an efficient data structure supporting average O(1) add, remove, and uniform ran...

Coding & Algorithms
2
0
24 people solved
May 4, 2026
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