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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
Meta logo
Meta
Medium
Data Scientist

Run a clean A/B test for recommendations

You must run an A/B test to evaluate the new hashtag recommender starting on 2025‑09‑01. 1) Define the randomization unit (user/session/impression) an...

Analytics & Experimentation
4
0
47 people solved
Oct 13, 2025
Turo logo
Turo
Medium
Software Engineer

Route HTTP requests to pods in a cluster

In a Docker/Kubernetes-like container cluster running multiple replicas (pods) of a service, explain how an incoming HTTP request reaches a specific p...

System Design
9
0
77 people solved
Feb 12, 2026
Meta logo
Meta
Medium
Software Engineer

Extend cloud file system with copy and compression

In-Memory Cloud File System V2: Copy, Capacity Updates, Compress/Decompress Design an in-memory file system with per-user quotas and additional operat...

Coding & AlgorithmsLow-Level Design (OOP)Heaps & Priority Queues
11
0
82 people solved
Feb 11, 2026
Uber logo
Uber
Medium
Data Scientist Locked

Evaluate UberEATS priority delivery and membership

This question evaluates a data scientist's competency in pricing strategy, marketplace economics, causal experimentation, metric selection, and estima...

Analytics & ExperimentationExperiment Design (A/B Testing)Business Case Analysis
7
0
81 people solved
Feb 28, 2026
Upstart logo
Upstart
Medium
Data Scientist Locked

Interpret A/B results with p-values and uncertainty

This question evaluates proficiency in statistical inference for A/B testing, covering confidence intervals, p-values, multiple-testing correction (Be...

Statistics & MathExperiment Analysis & ReadoutHypothesis Testing
6
0
126 people solved
Oct 13, 2025
Coinbase logo
Coinbase
Medium
Data Scientist

Calculate Cumulative Sum for Each Integer in Table

numbers +-----+ | num | +-----+ | 1 | | 2 | | 13 | | 14 | | 15 | +-----+ Scenario You have a table containing one integer per row; for each row...

Data Manipulation (SQL/Python)
15
0
18 people solved
Jul 12, 2025
Meta logo
Meta
Hard
Data Scientist

Estimate revenue of organic shopping tab

Estimate Monthly Revenue for a New Shopping Tab (Organic Only) Context You are evaluating the potential monthly revenue impact of launching a new Shop...

Analytics & Experimentation
5
0
41 people solved
Oct 13, 2025
OPPO logo
OPPO
Medium
Data Engineer

Walk through resume and project highlights

Resume Walkthrough — Data Engineer Technical Screen Context You are interviewing for a Data Engineer role. The interviewer wants a concise, impact-foc...

Behavioral & Leadership
8
0
83 people solved
Aug 14, 2025
Meta logo
Meta
Medium
Software Engineer

Compute left and right views once

Given the root of a binary search tree, output two lists: the nodes visible from the left side and the nodes visible from the right side, from top to ...

Coding & Algorithms
5
0
42 people solved
Sep 6, 2025
Microsoft logo
Microsoft
Medium
Software Engineer

Cluster city name variants into canonical entities

Normalize City Names for Vote Aggregation Context You have voting records containing a free-text city field. The same city may appear in many forms (e...

Machine Learning
9
0
67 people solved
Sep 6, 2025
Instacart logo
Instacart
Medium
Data Scientist

Define what you seek next, with trade-offs

Behavioral & Leadership — Role Fit, Trade‑offs, and 90‑Day Fit Check (Data Scientist) Task Articulate what you need to thrive in your next Data Scient...

Behavioral & Leadership
5
0
84 people solved
Oct 13, 2025
Zest AI logo
Zest AI
Hard
Data Scientist

Diagnose overfitting from error curves

You are evaluating a supervised machine learning model. You are shown a plot where the x-axis is training epoch or model complexity and the y-axis is ...

Machine Learning
4
0
45 people solved
Apr 5, 2026
Amazon logo
Amazon
Medium
Data Scientist

Optimize Predictive Analytics: Feature Engineering to Model Evaluation

End-to-End Predictive Analytics Project Walkthrough You are interviewing for a Data Scientist role. The interviewer asks you to describe a predictive ...

Machine Learning
23
0
91 people solved
Jul 12, 2025
LinkedIn logo
LinkedIn
Medium
Software Engineer

Design a max-stack with efficient operations

Design a max-stack with efficient operations Design a stack that supports push (x), pop(), top(), peekMax(), and popMax(). The popMax operation must r...

Coding & AlgorithmsData Structure DesignStacks & Queues
12
0
100 people solved
Aug 8, 2025
NVIDIA logo
NVIDIA
Medium
Software Engineer

Decide on competitive comparison policy

Comparative Benchmarking Blog Post: Go/No-Go and Ethical Positioning You are a software engineer asked whether the company should publish a blog post ...

Behavioral & Leadership
5
0
39 people solved
Sep 6, 2025
Attentive logo
Attentive
Hard
Data Scientist

Explain switch to product analytics and company fit

Behavioral & Leadership Technical Screen (Attentive, Data Scientist) Context You are interviewing for a Data Scientist role where you are expected to ...

Behavioral & Leadership
4
0
40 people solved
Oct 13, 2025
NewsBreak logo
NewsBreak
Medium
Machine Learning Engineer

Walk through a key project

Walk through a key project Behavioral/Technical Prompt: Most Impactful Project Provide a concise, structured walkthrough of the most impactful project...

Behavioral & Leadership
9
0
79 people solved
Aug 9, 2025
TikTok logo
TikTok
Hard
Software Engineer

Design overload protection with load shedding

Design overload protection with load shedding Design: Maintain p99 Latency SLOs During Sudden Traffic Spikes Context You are designing a user-facing, ...

System Design
5
0
61 people solved
Jul 15, 2025
Wells Fargo logo
Wells Fargo
Medium
Software EngineerSenior+ Locked

Getting Unblocked When Your Tech Lead Won't Help

This behavioral question assesses a software engineer's self-direction, ownership mindset, and professional communication when navigating organization...

Behavioral & Leadership
3
0
30 people solved
Jun 24, 2026
ByteDance logo
ByteDance
Medium
Software Engineer Locked

Design An Ad Creative Relationship Processing System

Prepare for a system design interview about processing ad creative plans, videos, keywords, and relationship results from an external model API. The p...

System Design
3
0
24 people solved
Jun 17, 2026
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