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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
Capital One logo
Capital One
Medium
Software Engineer

Find the Top-Left Submatrix Matching a Grid Pattern With Letter Variables

You are given a matrix of integers and a pattern grid with p rows and q columns. Each pattern cell is either a number, which must equal the matrix val...

Coding & AlgorithmsGrids & Matrices
2
0
23 people solved
Aug 4, 2026
Whatnot logo
Whatnot
Medium
Software Engineer Locked

Dot Product of Two Vectors (Dense, then Sparse)

This question assesses proficiency in array manipulation and algorithmic efficiency by asking for a vector dot product, first over dense arrays and th...

Coding & Algorithms
9
0
70 people solved
Jun 11, 2026
Attentive logo
Attentive
Medium
Software Engineer

Design a Product Catalog Ingested From Full Retailer Snapshots With Admin Overrides

Design a product catalog system. Retailers send their catalogs to the platform as snapshot files, users browse the resulting catalog, and platform adm...

System DesignSystem Design FundamentalsETL & Data Pipelines
0
0
5 people solved
Sep 24, 2026
Amazon logo
Amazon
Medium
Software Engineer Locked

Find the Kth Smallest Value in a Binary Search Tree

Build a binary search tree from a breadth-first serialization and return its kth smallest value. The prompt defines one-based rank, explicit nulls, im...

Coding & Algorithms
3
0
57 people solved
Aug 26, 2026
Apple logo
Apple
Medium
Software Engineer Locked

Object-Oriented Design: Hotel Room Booking System

This question evaluates object-oriented design skills through modeling a hotel room booking system with availability checks and reservations. It is co...

System DesignLow-Level Design (OOP)Concurrency
18
0
229 people solved
Jun 30, 2026
Amazon logo
Amazon
Medium
Software Engineer

Deliver an Important Project Under a Tight Deadline

Describe an important project you delivered under a tight deadline, including the tradeoffs and business impact. Constraints & Assumptions Use a real ...

Behavioral & LeadershipOwnership & ExecutionPrioritization & Tradeoffs
1
0
11 people solved
Sep 14, 2026
Bnsf logo
Bnsf
Hard
Software EngineerSenior+ Locked

Maximize Valid Trains from Shared Equipment

Optimize a fleet of locomotives and railcars into the largest possible number of valid trains, then maximize used railcar length. Respect capacity, le...

Coding & Algorithms
10
0
91 people solved
Jul 23, 2026
Confluent logo
Confluent
Medium
Software EngineerSenior+

Solve Signature, File, and Queue Problems

Solve the following interview-style problems: 1. Function signature matching You are given a registry of function definitions. Each function has an...

Coding & AlgorithmsData Structure DesignOperating Systems
20
0
189 people solved
Feb 22, 2026
Amazon logo
Amazon
Easy
Software Engineer

Demonstrate Project Ownership and In-Depth Investigation

Use examples from your past projects to explain how you take ownership of work and investigate a problem in depth. Describe your personal actions, the...

Behavioral & LeadershipOwnership & ExecutionAmbiguity & Decision Making
1
0
15 people solved
Aug 30, 2026
Kikoff logo
Kikoff
Easy
Software Engineer Locked

Build a Robust Log Parser and Prefix-Operator Search

Design a tool that parses a list of server-log strings into structured records with timestamp, level, service, message, and optional user identifier. ...

Software Engineering Fundamentals
5
0
57 people solved
Jul 31, 2026
OpenAI logo
OpenAI
Hard
Software Engineer Locked

Lead Through Technical Difficulty and Project Conflict

Prepare one coherent example that shows how you led people through a technically difficult project, resolved a project conflict, and delivered an outc...

Behavioral & Leadership
7
0
70 people solved
Aug 4, 2026
Figma logo
Figma
Medium
Software Engineer

Check Graph Reachability For File Permissions

You are given a graph representing simplified file permission inheritance. In part 1, the graph is directed and may contain cycles. Return whether the...

Coding & Algorithms
8
0
140 people solved
Apr 9, 2026
Sierra logo
Sierra
Medium
Software Engineer

Process time intervals and detect overlaps/gaps

You are given n time intervals representing debug log segments. Each interval has a start time, an end time, and an associated text message. - Each in...

Coding & AlgorithmsIntervals & Scheduling
70
1
700 people solved
Nov 14, 2025
Anthropic logo
Anthropic
Hard
Software Engineer Locked

Build a Progressive Banking Ledger

Implement a timestamped banking ledger with deposits, transfers, spender rankings, scheduled payments, cashback, account merges, and historical balanc...

Coding & AlgorithmsData Structure DesignSimulation & State Machines
9
0
158 people solved
Jul 8, 2026
Baseten logo
Baseten
Hard
Software Engineer Locked

Parallelize Blocking API Calls with a Thread Pool

Replace sequential blocking API calls with a bounded thread pool while preserving each result's input association and return order. Define worker limi...

Software Engineering FundamentalsConcurrency
23
0
170 people solved
Jul 26, 2026
Jane Street logo
Jane Street
Easy
Software Engineer

Validate order book data across multiple databases

Assume your organization stores order book–related data in multiple databases (e.g., one for raw exchange messages, one for normalized orders, one for...

System DesignData Quality & Validation
128
0
1579 people solved
Dec 15, 2025
UiPath logo
UiPath
Medium
Machine Learning Engineer

Probability a draw-until-threshold score ends at or below a limit

A player starts with 0 points and draws repeatedly. Each draw adds an integer chosen uniformly at random from 1 to max_points (inclusive) to the playe...

Coding & AlgorithmsDynamic ProgrammingProbability
0
0
9 people solved
Sep 9, 2026
Snapchat logo
Snapchat
Hard
Machine Learning Engineer Locked

Explain Core ML Training, Evaluation, and Transformer Concepts

Review overfitting, class imbalance, optimizer behavior, classification metrics, and Transformer architecture in one focused ML fundamentals discussio...

Machine Learning
4
0
39 people solved
Aug 28, 2026
Imc logo
Imc
Easy
Hardware Engineer Locked

Choose Between Two Machines and Allocate Work from Performance Curves

Choose between two machine types using latency-throughput curves, request shape, batching, queueing, cost, and service objectives. The solution covers...

System Design
1
0
28 people solved
Aug 24, 2026
Rippling logo
Rippling
Easy
Software Engineer

Design a news aggregator system

Rippling Onsite — Two Parts This Software Engineer onsite has two parts: a system design and a short coding follow-up. Both are below. Treat them as o...

System DesignSearch & Feed SystemsRanking Models
218
0
1616 people solved
Dec 5, 2025
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