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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
Bloomberg logo
Bloomberg
Medium
Software Engineer

Introduce yourself and explain why Bloomberg

Behavioral questions 1. Self-introduction / resume walkthrough - Give a 1–2 minute overview of your background. - Highlight 1–2 projects you’ve ...

Behavioral & LeadershipMotivation & FitProject Deep Dive
24
0
239 people solved
Jan 6, 2026
Meta logo
Meta
Medium
Software Engineer

Design a bank system with scheduled transfers

Bank System (OOD): Accounts, Transfers, Scheduling, Top Spending, Merge Design an in-memory banking system that supports: - account creation - deposit...

Coding & Algorithms
4
0
69 people solved
Feb 11, 2026
Optiver logo
Optiver
Medium
Quantitative Trader

Compare two programs for equivalence

You are given two short programs (or functions) that process an integer array A (|A| ≤ 10^ 5). Determine whether they are functionally equivalent for ...

Coding & AlgorithmsTesting & QualityProgramming Languages
11
0
128 people solved
Sep 6, 2025
DoorDash logo
DoorDash
Medium
Data Scientist

Generate Weekly Revenue and Engagement Summary with Pandas

events | user_id | event_time | event_type | platform | revenue | |---------|---------------------|------------|----------|---------| | 101 ...

Data Manipulation (SQL/Python)Pandas & Python DataSQL
64
0
118 people solved
Jul 12, 2025
Microsoft logo
Microsoft
Medium
Machine Learning Engineer Locked

Find the Lowest Common Ancestor in a Binary Search Tree

Find the lowest common ancestor of two values in a binary search tree represented in level-order form. Use the BST ordering invariant to locate the fi...

Coding & Algorithms
2
0
24 people solved
Jun 21, 2026
Upstart logo
Upstart
Medium
Software Engineer

Professional Introduction for a Recruiter Screen

Professional Introduction for a Recruiter Screen Give a concise professional introduction that connects your current strengths, relevant experience, a...

Behavioral & Leadership
2
0
17 people solved
Jan 15, 2026
Bloomberg logo
Bloomberg
Medium
Software Engineer

Implement anagram check and odd-even linked list

You are given two independent coding tasks. Task 1: Check if two strings are anagrams Implement a function that determines whether two given strings a...

Coding & AlgorithmsArrays & StringsLinked Lists
12
0
99 people solved
Oct 6, 2025
Uber logo
Uber
Medium
Data Scientist

Clean, split, merge, and aggregate with pandas

Given two CSVs, use pandas to clean, split strings, merge, and aggregate. drivers.csv driver_id,name,signup_city D1,Jane Doe,SF D2,Mark S,NYC D3,A...

Data Manipulation (SQL/Python)
2
0
20 people solved
Oct 13, 2025
Meta logo
Meta
Medium
Data Scientist

Evaluate Probability of Positive User Comments and Model Performance

Evaluate Probability of Positive User Comments and Model Performance Social-Media Positivity: Independence and Model Comparison Context You are evalua...

Statistics & Math
109
0
402 people solved
Aug 4, 2025
Snowflake logo
Snowflake
Medium
Software Engineer

Set second tree values by subtree sums

Given the roots of two complete binary trees T1 and T2 that have identical structure and the same number of nodes, replace each value in T2 with the s...

Coding & AlgorithmsTrees
14
1
118 people solved
Sep 6, 2025
Airbnb logo
Airbnb
Medium
Software Engineer

Discuss learning and feedback experiences

Discuss learning and feedback experiences This behavioral set covers self-directed learning and how you respond to feedback. Be ready to walk through ...

Behavioral & LeadershipFailure & Learning
13
0
123 people solved
Aug 4, 2025
Meta logo
Meta
Hard
Data Scientist

Track Success and Guardrail Metrics for Push Notifications

Track Success and Guardrail Metrics for Push Notifications You are designing and evaluating a new push-notification feature for a travel-recommendatio...

Analytics & Experimentation
95
0
402 people solved
Jul 12, 2025
Two Sigma logo
Two Sigma
Hard
Data Scientist

Predicting Stock Prices from Twitter Data

Predicting Stock Prices from Twitter Data Suppose you have access to a large stream of Twitter data — tweets with their text, timestamps, and author m...

ML System Design
10
0
73 people solved
Dec 2, 2025
Meta logo
Meta
Medium
Software Engineer

Design prefix-sum function and max stack

Question LeetCode 303. Range Sum Query – Immutable (design a reusable prefix-sum function) LeetCode 716. Max Stack (similar design question) https://l...

Coding & Algorithms
8
0
48 people solved
Jul 29, 2025
LinkedIn logo
LinkedIn
Medium
Data Scientist

Single Queue vs Multiple Queues — Service Design

Bank Branch Queue Design: Single Queue Versus Multiple Queues A bank branch has c identical tellers. Customers arrive approximately as a Poisson proce...

Analytics & Experimentation
23
0
98 people solved
Jul 12, 2025
Amazon logo
Amazon
Hard
Data Scientist

Derive and compare core ML and RL methods

ML Fundamentals Technical Screen — Multi‑part Question Context: You are given a set of core machine learning topics to address rigorously. For each pa...

Machine LearningML FundamentalsReinforcement Learning
15
0
113 people solved
Oct 13, 2025
Meta logo
Meta
Medium
Data Scientist

Retrieve Top Five Ads by Conversions in 30 Days

ads ad_id | advertiser_id | created_at 1 | 101 | 2024-06-01 2 | 102 | 2024-06-03 3 | 101 | 2024-06-10 ​ ad_i...

Data Manipulation (SQL/Python)
90
0
518 people solved
Aug 4, 2025
Pinterest logo
Pinterest
Medium
Data Scientist

Analyze Global Engagement and Impressions with SQL Queries

impressions +---------+---------+----------+----------------+ | user_id | country | category | impression_cnt | +---------+---------+----------+------...

Data Manipulation (SQL/Python)
49
0
39 people solved
Jul 12, 2025
Lyft logo
Lyft
Hard
Data Scientist

Investigate Causes and Effects of Dynamic Pricing on ETAs

Investigate Causes and Effects of Dynamic Pricing on ETAs Lyft notices that ride wait times, or ETA, increased 20% month over month. The team suspects...

Analytics & ExperimentationMetric DiagnosticsExperiment Design (A/B Testing)
97
0
226 people solved
Jul 12, 2025
LinkedIn logo
LinkedIn
Medium
Software EngineerSenior+ Locked

Solve substring and top‑K pair problems

This multi-part question evaluates algorithm design and data-structure proficiency across string processing (minimum window substring), pair-selection...

Coding & AlgorithmsTwo Pointers & Sliding WindowData Structure Design
16
0
121 people solved
Oct 13, 2025
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