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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
12.0k
Companies
570
Updated
10.05.2026
12.0k 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
Siemens logo
Siemens
Medium
Machine Learning EngineerSenior+

Explain SFT, DPO, PPO, and the Role of KL Regularization

Explain the objectives and practical differences among supervised fine-tuning (SFT), Direct Preference Optimization (DPO), and PPO-based language-mode...

Machine LearningFine-Tuning & Alignment TechniquesReinforcement Learning
2
0
19 people solved
Sep 4, 2026
AMD logo
AMD
Medium
Software Engineer

Find the Largest K Elements with Partitioning

Return the largest k values from an array, preserving duplicate occurrences. Compare a heap solution with a partition-based selection approach and exp...

Coding & AlgorithmsSortingHeaps & Priority Queues
1
0
17 people solved
Sep 14, 2026
Nuro logo
Nuro
Hard
Software Engineer

Design an Autonomous-Vehicle Simulator

Design an autonomous-vehicle simulator for testing how a driving model responds to road situations. Clarify how the model connects to the simulator, w...

System DesignSimulation & State MachinesModel Evaluation
2
0
27 people solved
Aug 31, 2026
Figma logo
Figma
Medium
Software Engineer Locked

Validate a Balanced INDENT and DEDENT Token Stream

Validate whether an INDENT and DEDENT token stream remains balanced at every prefix and closes all open levels at the end. This compact problem tests ...

Coding & AlgorithmsStacks & Queues
16
0
167 people solved
Jul 21, 2026
Latent logo
Latent
Hard
Software EngineerSenior+

Add Status, Pharmacist Worklists, and Digests to Prior Authorization

Extend an existing prior-authorization platform with status lookup, pharmacist worklists, and an end-of-workday digest email. The existing platform si...

System DesignSystem Design FundamentalsDistributed Transactions & Idempotency
1
0
18 people solved
Sep 2, 2026
Meta logo
Meta
Medium
Software EngineerSenior+

Design a Reliable Notification System

Design a notification system. Explain the storage choices, recipient fanout strategy, behavior under high traffic, and reliability model. Include the ...

System DesignReal-Time SystemsDistributed Transactions & Idempotency
4
0
58 people solved
Aug 25, 2026
Brex logo
Brex
Medium
Software Engineer

Splendor-Style Card Purchases with Gem Costs, Color Discounts and Concurrent Buys

Build a small simulation of buying cards in a game modeled on the board game Splendor. Players hold gems in five colors: Blue (B), White (W), Green (G...

Software Engineering FundamentalsLow-Level Design (OOP)Concurrency
1
0
15 people solved
Aug 21, 2026
Mixpanel logo
Mixpanel
Medium
Data Scientist

Calculate First-Week Retention by Signup Cohort

Compute First-Week Retention by Signup Week You have these tables: | Table | Column | Meaning | |---|---|---| | users | user_id | User identifier. | |...

Data Manipulation (SQL/Python)SQLSegmentation & Cohort Analysis
1
0
14 people solved
Sep 14, 2026
Databricks logo
Databricks
Medium
Machine Learning Engineer

Implement Simple Linear Regression with Gradient Descent from Scratch

Write simple linear regression trained with gradient descent, from scratch. Given training inputs x (one feature per example) and targets y, learn a s...

Machine LearningML CodingML Fundamentals
1
0
14 people solved
Sep 11, 2026
J.P. Morgan logo
J.P. Morgan
Medium
Software Engineer Locked

Reason About Top K Frequent Values at Scale

Explain top-k frequency counting with a bounded heap and extend it to key-partitioned local counting and global aggregation without inventing tie or o...

Software Engineering Fundamentals
5
0
45 people solved
Aug 17, 2026
Jane Street logo
Jane Street
Easy
Software Engineer

Sort trade executions into a canonical order

You are building a small component in a trading system that consumes trade execution records from an upstream feed. The records may arrive out of orde...

Coding & AlgorithmsSorting
113
0
806 people solved
Dec 15, 2025
LinkedIn logo
LinkedIn
Easy
Software Engineer

Arrange Nonnegative Integers to Form the Largest Number

Arrange Nonnegative Integers to Form the Largest Number Given a list of nonnegative integers, arrange all of them so that their decimal representation...

Coding & Algorithms
5
0
52 people solved
Aug 19, 2026
Anthropic logo
Anthropic
Medium
Software Engineer Locked

Improve an ML Inference Service

Improve an ML inference service with cost-aware admission, dynamic batching, load shedding, scoped caching, and exact idempotency semantics.

ML System Design
8
0
120 people solved
Aug 12, 2026
Medium
Analytics Engineer

Number Entries Within Each Conversation

Number Entries Within Each Conversation The source relation is named entries for this exercise and has these columns: | Column | Meaning | |---|---| |...

Data Manipulation (SQL/Python)SQL
2
0
15 people solved
Sep 12, 2026
Oracle logo
Oracle
Medium
Software Engineer

Count Islands and Return the Largest Island Size

Given a two-dimensional land/water grid, return both the number of islands and the size of the largest island. An island is a maximal group of land ce...

Coding & AlgorithmsGrids & MatricesStacks & Queues
1
0
10 people solved
Sep 11, 2026
Oracle logo
Oracle
Medium
Software Engineer

Troubleshoot a Frontend Failure in a Client-Server Application

A frontend application in a client-server architecture has started failing. Explain how you would locate the failure across the browser, network, back...

Software Engineering FundamentalsDebuggingAPI Integration & HTTP Clients
1
0
12 people solved
Sep 11, 2026
DoorDash logo
DoorDash
Hard
Software Engineer Locked

Resolve a Workplace Conflict

Prepare a grounded conflict-resolution story that demonstrates listening, evidence, ownership, and a durable working agreement.

Behavioral & Leadership
3
0
49 people solved
Sep 1, 2026
Box logo
Box
Easy
Software Engineer

Implement a Leaky Bucket Rate Limiter

Implement a leaky bucket rate limiter. You are given a class template for a rate limiter that controls whether incoming requests should be accepted or...

Coding & Algorithms
13
0
114 people solved
Apr 17, 2026
Rippling logo
Rippling
Medium
Software Engineer Locked

Implement an In-Memory File System

This question evaluates understanding of file-system abstractions, tree-based data structures, path parsing, and stateful directory and file managemen...

Coding & Algorithms
11
1
187 people solved
May 30, 2026
Tesla logo
Tesla
Medium
Software Engineer

Use Metrics and Logs to Establish a Production Root Cause

Explain how you use metrics and logs to investigate the root cause of a production problem. Walk through a concrete incident or an explicitly hypothet...

Software Engineering FundamentalsDebuggingObservability
2
0
20 people solved
Sep 1, 2026
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