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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
11.9k
Companies
569
Updated
10.02.2026
11.9k Questions 569 Companies10.02.2026
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
Sybill logo
Sybill
Medium
Software Engineer

Implement an unbiased array shuffle

Implement an unbiased array shuffle Implement an in-place function shuffle(arr) in JavaScript that returns a uniformly random permutation of the input...

Coding & Algorithms
3
0
58 people solved
Aug 10, 2025
Amazon logo
Amazon
Medium
Data Scientist

Answer core behavioral questions for data roles

Answer core behavioral questions for data roles You are interviewing directly with a hiring manager who is known to be very selective. The interview i...

Behavioral & Leadership
4
0
71 people solved
Jul 29, 2025
Lyft logo
Lyft
Easy
Software Engineer

Design a Fault-Tolerant Wikipedia Archiver

Question Design a distributed system that archives all Wikipedia pages and keeps the archive current. You have one reliable primary machine, about one...

System Design
2
0
30 people solved
Apr 14, 2026
TikTok logo
TikTok
Hard
Software Engineer

Define and measure project metrics

Design and Measurement: Metrics, Instrumentation, and Experiment Plan Context (added for clarity) You are shipping "Freshness Boost," a change to the ...

Analytics & Experimentation
5
0
54 people solved
Sep 6, 2025
Expedia logo
Expedia
Hard
Software Engineer

How do you learn new knowledge quickly?

Behavioral questions 1. How do you learn new knowledge/technology quickly? Provide a concrete example. 2. What was the most challenging project you wo...

Behavioral & Leadership
5
0
76 people solved
Jan 6, 2026
Capital One logo
Capital One
Medium
Data Scientist

Impute, join, and upsert using SQL and Python

Write both SQL and Python (pandas) to complete the following data-manipulation tasks. Assume today is 2025-09-01 for any time filters. Schema: custome...

Data Manipulation (SQL/Python)
2
0
20 people solved
Oct 13, 2025
Salesforce logo
Salesforce
Medium
Software Engineer

Help a Colleague Resolve a Difficult Problem

Prompt Tell me about a time you helped a colleague resolve a difficult problem. Explain how you learned what they needed, how you contributed without ...

Behavioral & Leadership
0
0
10 people solved
Apr 11, 2026
Meta logo
Meta
Medium
Software EngineerSenior+ Locked

Troubleshoot a single-node web outage

This question evaluates operational troubleshooting, root-cause analysis, and resilience design skills for a single-node web server, testing a candida...

System Design
4
0
67 people solved
Jan 22, 2026
Disney logo
Disney
Hard
Data ScientistSenior+

Demonstrate influential product leadership under ambiguity

Behavioral & Leadership: Influencing Without Authority Under Tight Deadlines Scenario You are a Senior Data Analyst supporting a streaming product. Fo...

Behavioral & Leadership
8
0
62 people solved
Oct 13, 2025
LinkedIn logo
LinkedIn
Medium
Software Engineer

Reverse a linked list

Question LeetCode 206. Reverse Linked List — Given the head of a singly linked list, reverse the list and return the reversed list. https://leetcode.c...

Coding & Algorithms
6
0
35 people solved
Jul 29, 2025
Bitkernel logo
Bitkernel
Medium
Software Engineer

Trace first pass of heap sort

Given the integer array [7, 6, 3, 5, 4, 1, 2], you apply heap sort to sort it in ascending order using a max-heap implementation. After building the i...

Software Engineering Fundamentals
3
0
49 people solved
Oct 24, 2025
Uber logo
Uber
Hard
Data Scientist

Explain grocery-specific product strategy and scrappy XP

Launching Grocery Delivery in NYC: Product and Experimentation Plan Context A delivery platform that is strong in restaurant delivery is launching a g...

Behavioral & LeadershipExperiment Design (A/B Testing)Metrics & KPIs
4
0
80 people solved
Oct 13, 2025
Capital One logo
Capital One
Hard
Data Scientist

Evaluate merchant partnership for high-value customers

Partnership evaluation to acquire high‑LTV cardholders: Home‑sharing (RH) vs Big‑box retailer Context C1, a credit‑card issuer, is considering marketi...

Analytics & Experimentation
5
0
67 people solved
Oct 13, 2025
Meta logo
Meta
Hard
Data Scientist

Demonstrate leadership under ambiguity

Behavioral & Leadership Prompt (Data Scientist) Describe one high-stakes project where priorities changed mid-stream and you had to influence without ...

Behavioral & Leadership
5
0
49 people solved
Oct 13, 2025
Sealth logo
Sealth
Easy
Machine Learning Engineer Locked

Implement Beam Search With Length Normalization

This question evaluates understanding and implementation of sequence decoding algorithms—greedy decoding and beam search—alongside sequence scoring wi...

Machine LearningML Coding
15
0
107 people solved
Apr 19, 2026
Roblox logo
Roblox
Medium
Data Scientist

Defend a metric choice under scrutiny

Describe a time you chose a non-obvious primary metric (e.g., time-per-session over total time) and were challenged by a senior stakeholder. 1) How di...

Behavioral & LeadershipMetrics & KPIs
6
0
94 people solved
Oct 13, 2025
Coinbase logo
Coinbase
Medium
Data Scientist

Write SQL and Python for funnels/retention

Given the following schema and small samples, answer Parts A–C. Assume timestamps are UTC and "today" is 2025-09-01. Schema: users(id INT, country STR...

Data Manipulation (SQL/Python)
2
0
17 people solved
Oct 13, 2025
Meta logo
Meta
Easy
Data Scientist Locked

Evaluate new shop-ads ranking algorithm

This question evaluates a data scientist's skills in online experimentation, causal inference, and marketplace analytics—covering A/B test design, ran...

Analytics & ExperimentationExperiment Design (A/B Testing)Experiment Analysis & Readout
32
0
204 people solved
Jan 17, 2026
Paramount Commerce logo
Paramount Commerce
Hard
Software Engineer

Design a Go music player with playlists

Design and Implement an Object-Oriented Music Player in Go You are asked to design and implement a small, object-oriented music management and playbac...

System DesignLow-Level Design (OOP)Concurrency
12
0
84 people solved
Sep 6, 2025
Uber logo
Uber
Medium
Software Engineer Locked

Return sorted squares of a sorted array

This question evaluates array-processing and algorithmic optimization skills, including handling negative values, element-wise transformations, and pr...

Coding & AlgorithmsTwo Pointers & Sliding Window
8
0
84 people solved
Jan 10, 2026
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