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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
NVIDIA logo
NVIDIA
Medium
Software Engineer Locked

Design the Control Plane for a Compute Cluster: Host Monitoring + Job Dispatch

This question assesses the ability to design a distributed control plane that tracks live host state across a large compute fleet under high write con...

System DesignSystem Design FundamentalsFault Tolerance & Failover
22
0
204 people solved
Jun 20, 2026
Glean logo
Glean
Medium
Machine Learning Engineer AI

Implement Rate-Limited Wikipedia Crawler

Implement a rate-limited Wikipedia crawler. You may use an AI coding assistant during the interview, such as Cursor or Claude Code. You are expected t...

Coding & Algorithms
5
0
66 people solved
Apr 23, 2026
Oracle logo
Oracle
Medium
Software Engineer

Explain a Team-Owned System Architecture

Explain a Team-Owned System Architecture Explain the business logic and technical architecture of a system your team owned, without exposing confident...

Software Engineering Fundamentals
2
0
16 people solved
Aug 18, 2026
Confluent logo
Confluent
Medium
Software EngineerSenior+

Implement tail -n for a Very Large File

Implement tail -n for a Very Large File Design and implement the core of tail -n: given a seekable file and a non-negative integer n, return the final...

Software Engineering FundamentalsOperating Systems
8
0
119 people solved
Jan 1, 2026
Google logo
Google
Medium
Software Engineer Locked

Consolidate On-Call Rotation Segments

This question evaluates proficiency with interval manipulation, set management, sorting and event ordering, and the use of appropriate data structures...

Coding & Algorithms
21
0
123 people solved
May 25, 2026
Spacex logo
Spacex
Medium
Software Engineer

Dynamic Island Counts

Dynamic Island Counts Implement island_counts(rows: int, columns: int, additions: list[list[int]]) -> list[int]. Begin with a rows by columns grid con...

Coding & Algorithms
6
0
53 people solved
Apr 16, 2026
Netflix logo
Netflix
Medium
Software Engineer Locked

Find the Longest Substring Without Repeated Characters

Implement the length of the longest contiguous substring whose ASCII characters are all distinct. Focus on contiguous-range reasoning, repeated-charac...

Coding & Algorithms
9
0
66 people solved
Jul 31, 2026
DRW logo
DRW
Medium
Software EngineerNew Grad

Largest Number From a 1-and-2 Digit String With Even Counts of Each Digit

You are given a string digits consisting only of the characters '1' and '2'; it represents a positive integer. You may delete zero or more characters ...

Coding & AlgorithmsGreedyArrays & Strings
4
0
44 people solved
Mar 5, 2026
Databricks logo
Databricks
Medium
Software Engineer

Implement a rate-limited hit counter

You are designing a hit counter that records the number of hits received in the past 5 minutes. Implement a class HitCounter with the following method...

Coding & AlgorithmsData Structure Design
30
0
477 people solved
Dec 8, 2025
Harvey logo
Harvey
Medium
Software Engineer Locked

Implement retrieval and evaluation for a simple RAG

This question evaluates understanding of embedding-based retrieval, cosine similarity ranking, and retrieval evaluation metrics (Recall@10 and MRR@10)...

Coding & AlgorithmsRetrieval-Augmented GenerationEmbeddings & Vector Search
17
0
226 people solved
Mar 1, 2026
Anthropic logo
Anthropic
Medium
Software Engineer Locked

Time-Based Key-Value Store

This question evaluates the ability to design a data structure that supports versioned storage and efficient point-in-time lookups. It tests binary se...

Coding & Algorithms
7
0
54 people solved
Jun 23, 2026
Amazon logo
Amazon
Medium
Software Engineer

A Problem That Needed Deep Analysis: Knowing You Focused on the Right Things

Tell me about a problem you had to solve that required in-depth thought and analysis. How did you know you were focusing on the right things, and what...

Behavioral & LeadershipAmbiguity & Decision MakingProject Deep Dive
0
0
9 people solved
Sep 10, 2026
Databricks logo
Databricks
Medium
Software Engineer Locked

Solve Grid Path and Graph Sampling

This question evaluates graph algorithms and probabilistic/combinatorial reasoning, covering multi-criteria shortest-path optimization (minimizing tra...

Coding & Algorithms
12
0
126 people solved
Apr 3, 2026
Oracle logo
Oracle
Medium
Software EngineerSenior+

Design a Synchronously Replicated Hash Map

Design a Synchronously Replicated Hash Map Design a hash map with one writer, one reader, one active replica, and one passive replica. A write must be...

System Design
2
0
22 people solved
Aug 14, 2026
Amazon logo
Amazon
Hard
Software Engineer Locked

Find a Maximum-Sum Window in a Sparse Array

Find the maximum sum of any fixed-length window in an enormous sparse array represented by nonoverlapping constant-value segments. Sweep compressed br...

Coding & Algorithms
8
0
78 people solved
Jul 10, 2026
Squarepoint logo
Squarepoint
Hard
Data Scientist

How Does Removing Zeros Affect Sharpe?

Suppose a return series has 2n observations. Exactly n observations are 0, and the remaining n observations are non-zero returns x1, x2, ..., xn with ...

Statistics & Math
14
0
107 people solved
Mar 27, 2026
Shopify logo
Shopify
Medium
Data ScientistSenior+ AI Locked

Analyze Pirated Theme Usage

This question evaluates competency in temporal data manipulation, interval-overlap logic, aggregations and joins to calculate monthly usage metrics an...

Data Manipulation (SQL/Python)SQLMetrics & KPIs
13
2
134 people solved
May 23, 2026
Nuro logo
Nuro
Hard
Software Engineer

Explain Project Scope, Ownership, and Technical Challenges

Describe a project you worked on. Explain its scope, your personal responsibilities, the overall design, and the hardest technical challenge you encou...

Behavioral & LeadershipProject Deep DiveSystem Design Fundamentals
2
0
20 people solved
Aug 31, 2026
Microsoft logo
Microsoft
Hard
Software Engineer

Find all balanced k in a permutation

You are given a permutation \(p\) of length \(n\) containing each integer from \(1\) to \(n\) exactly once. For each \(k\) where \(1 \le k \le n\), de...

Coding & AlgorithmsArrays & Strings
36
0
268 people solved
Mar 1, 2026
Robinhood logo
Robinhood
Medium
Software Engineer Locked

Maintain Fractional Stock Inventory Across Orders

Simulate sequential customer buy and sell orders while keeping a firm's fractional stock inventory between zero and one share. The task uses scaled in...

Coding & Algorithms
8
0
72 people solved
Jun 22, 2026
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