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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
Applied Intuition logo
Applied Intuition
Medium
Software Engineer

Implement a nested object validator

Implement a helper function validate(object, required_style) that checks whether a possibly nested object matches a provided schema. The object may co...

Data Manipulation (SQL/Python)Parsing & Interpreters
18
0
253 people solved
Sep 6, 2025
Pinterest logo
Pinterest
Medium
Data Scientist

Transform nested dicts with pandas apply/lambda

Given a pandas DataFrame df with columns: user_id (int), ts (datetime64[ns]), events (list of dicts), attrs (dict). Example rows (conceptual): user_id...

Data Manipulation (SQL/Python)
5
0
36 people solved
Oct 13, 2025
Armada logo
Armada
Medium
Software Engineer

Fetch paginated data from two APIs

Write a function get_enriched_records(api_a_url, api_b_url). api_a_url returns paginated JSON in the form: `json { "data": [ {"id": 1, "ref_id":...

Coding & Algorithms
6
0
49 people solved
Feb 17, 2026
Upstart logo
Upstart
Medium
Data Scientist

Calculate User Revenue and Session Duration in Python

events +---------+------------+---------+---------------------+ | user_id | event_type | revenue | timestamp | +---------+------------+-----...

Data Manipulation (SQL/Python)
4
0
33 people solved
Aug 4, 2025
Upstart logo
Upstart
Medium
Data Scientist

Estimate and Derive Regression Coefficient for X on y

Estimate and Derive Regression Coefficient for X on y Statistics & Probability Onsite — Two-Part Question Context - You have a simple linear data-gene...

Statistics & MathRegression & Statistical ModelingSampling & Estimation
96
0
379 people solved
Aug 4, 2025
Amazon logo
Amazon
Hard
Applied Scientist

Explain imbalance, metrics, bias-variance, Transformers vs. CNNs

Question You are given a highly imbalanced binary classification problem in a fraud-detection setting (roughly 1% positives). Walk through the core ML...

Machine Learning
14
0
97 people solved
Sep 6, 2025
Amazon logo
Amazon
Medium
Business Intelligence Engineer

Identify Employees with Invalid Department References

EMPLOYEE +-----+-----+--------+ | eid | did | ename | +-----+-----+--------+ | 1 | 10 | Alice | | 2 | 11 | Bob | | 3 | 99 | Carol | +--...

Data Manipulation (SQL/Python)
10
0
32 people solved
Jul 12, 2025
TikTok logo
TikTok
Medium
Machine Learning Engineer

Describe internship and research projects

Describe internship and research projects Behavioral/Leadership Prompt: Two Projects (Internship + Research) Context You are interviewing for a Machin...

Behavioral & LeadershipProject Deep DiveOwnership & Execution
15
0
106 people solved
Aug 8, 2025
Motive logo
Motive
Medium
Software Engineer

Implement Union-Find and track components

Implement a Disjoint Set Union (Union-Find) data structure with union by rank and path compression. Design the API to support union(a, b), connected(a...

Coding & Algorithms
8
0
67 people solved
Sep 6, 2025
Instacart logo
Instacart
Medium
Software Engineer

Answer standard behavioral questions

Question Answer the standard behavioral questions asked in an Instacart Software Engineer onsite. Use the STAR framework and make your specific impact...

Behavioral & LeadershipProject Deep DiveAmbiguity & Decision Making
17
0
195 people solved
Sep 6, 2025
Amazon logo
Amazon
Medium
Software Engineer

Design an OOD restaurant management system

Object-oriented design: Restaurant management system Design an object-oriented system for a dine-in restaurant that supports the following: Functional...

Software Engineering FundamentalsLow-Level Design (OOP)Payments & Ledgers
11
0
111 people solved
Sep 5, 2025
Expedia logo
Expedia
Hard
Software Engineer Locked

Design a natural-disaster notification system

This question evaluates system design competencies including large-scale geospatial data processing, spatial indexing, event-driven notification pipel...

System DesignGeo & Delivery SystemsAPI Design
12
0
106 people solved
Jan 6, 2026
ByteDance logo
ByteDance
Easy
Data Scientist Locked

Explain Train-Test Performance Gap

This question evaluates a candidate's competency in diagnosing model generalization failures for both classical machine learning and deep learning sys...

Machine Learning
2
0
40 people solved
Feb 14, 2026
Rippling logo
Rippling
Medium
Software Engineer

Find minimum of unknown convex function

You are given access to an unknown univariate convex function \(f(x)\) defined on a closed interval \([L, R]\) on the real line. - You cannot see the ...

Machine LearningBinary Search
9
0
137 people solved
Dec 8, 2025
Meta logo
Meta
Medium
Data Scientist

Forecast Next Year's Revenue Using YoY% Analysis

ad_revenue +------------+---------+ | date | revenue | +------------+---------+ | 2023-01-01 | 1000 | | 2023-01-02 | 1200 | | 2024-01-01 |...

Data Manipulation (SQL/Python)
3
0
19 people solved
Aug 4, 2025
TikTok logo
TikTok
Medium
Software Engineer

Solve top-K and string rotation match

Solve top-K and string rotation match 1) Given an unsorted array of integers and an integer k, return the k largest elements in descending order. Impl...

Coding & Algorithms
3
0
71 people solved
Jul 26, 2025
HubSpot logo
HubSpot
Easy
Software Engineer

Find a special person using knows(a,b)

Problem You are given n people labeled 0 to n-1 at a party. You can call an API: - knows(a, b) -> bool: returns true if person a knows person b, other...

Coding & AlgorithmsGraphs
16
0
126 people solved
Dec 15, 2025
Google logo
Google
Medium
Software EngineerNew Grad

Solve Banana Speed and Interval Merge

During two technical phone screens for a new graduate software engineering role, the candidate was asked to solve two coding problems: minimum eating ...

Coding & AlgorithmsBinary SearchIntervals & Scheduling
16
0
107 people solved
Jan 27, 2025
DoorDash logo
DoorDash
Hard
Software Engineer

Design notification and project architecture

Design notification and project architecture System Design: Multi-Channel Notification Platform Design a scalable Notification System that supports re...

System DesignSystem Design FundamentalsFault Tolerance & Failover
12
0
145 people solved
Aug 4, 2025
Meta logo
Meta
Medium
Data Scientist

Determine Unhealthy Oculus Usage with SQL Analysis

oculus_sessions +---------+---------------------+---------------------+---------+------------+ | user_id | session_start | session_end |...

Data Manipulation (SQL/Python)
1
0
24 people solved
Aug 4, 2025
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