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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
12.2k
Companies
569
Updated
10.14.2026
12.2k Questions 569 Companies10.14.2026
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
Xiaopeng logo
Xiaopeng
Medium
Software Engineer Locked

Maintain the Median of a Data Stream

Process a stream of integers and return the median after every insertion. Work through the function contract, boundary cases, correctness argument, an...

Coding & Algorithms
2
0
19 people solved
Jul 22, 2026
Airtable logo
Airtable
Medium
Software Engineer

Implement a Connection Pool

You are given an existing DBConnection class that simulates a physical database connection. It exposes the following methods and must not be modified:...

Software Engineering FundamentalsLow-Level Design (OOP)
21
0
179 people solved
Jan 25, 2026
Microsoft logo
Microsoft
Medium
Software Engineer Locked

Implement Memory Allocation and In-Memory Records

This question evaluates implementation skills in memory management and in-memory data modeling, covering first-fit allocation semantics, free/merge be...

Coding & Algorithms
2
0
36 people solved
May 7, 2026
Google logo
Google
Hard
Data Scientist Locked

Build and evaluate illegal-video classifier

This question evaluates competency in end-to-end Machine Learning system design, including multimodal modeling (vision, audio, text), data engineering...

Machine LearningML System DesignAI Safety & Alignment
14
0
104 people solved
Oct 13, 2025
Waymo logo
Waymo
Easy
Data Scientist

Estimate total attendance from size-biased reservation sample

You run a restaurant with N = 10,000 reservations in a day. Each reservation j has: - Reserved party size: \(R_j\) (positive integer) - Actual number ...

Statistics & MathSampling & Estimation
42
0
295 people solved
Nov 11, 2025
HubSpot logo
HubSpot
Medium
Software Engineer Locked

Design a video streaming platform like Netflix/YouTube

This question evaluates a candidate's competence in designing large-scale video streaming systems, covering distributed systems architecture, scalabil...

System DesignFile & Media StorageCaching
22
0
157 people solved
Jan 22, 2026
xAI logo
xAI
Medium
Machine Learning Engineer

Identify all bad nodes with group tests

You have N nodes. Each node is either good or bad (unknown to you). You can call a function test(S) on a subset of nodes S: - test(S) = True iff all n...

Coding & Algorithms
18
1
293 people solved
Sep 22, 2025
Tubi logo
Tubi
Medium
Machine Learning Engineer

Machine Learning Fundamentals: Tree Models, Training, Evaluation, and Embeddings

Machine Learning Fundamentals: Tree Models, Training, Evaluation, and Embeddings This is a concept-check round for an early-career ML engineer. The go...

Machine Learning
2
0
50 people solved
Feb 10, 2026
Anthropic logo
Anthropic
Medium
Software Engineer

Design high-throughput hashing for kernels

Design a high-throughput hash-based lookup to be called inside a tight kernel. Choose between open addressing and chaining, specify the load factor, p...

Coding & AlgorithmsData Structure DesignMemory Management
23
0
243 people solved
Sep 6, 2025
Amperity logo
Amperity
Medium
Software Engineer

Resolve a Difficult Project Challenge

Resolve a Difficult Project Challenge Describe a difficult project challenge or conflict, how you diagnosed what was blocking progress, the action you...

Behavioral & Leadership
1
0
19 people solved
Aug 19, 2026
StackAdapt logo
StackAdapt
Easy
Machine Learning Engineer Locked

Maintain the Median of an Integer Stream

Design a MedianFinder that supports arbitrary integer insertions and constant-time median queries. Use balanced max and min heaps for the lower and up...

Coding & Algorithms
3
0
58 people solved
Aug 10, 2026
Databricks logo
Databricks
Medium
Software Engineer

Answer behavioral screen questions

Answer behavioral screen questions HR Screen — Behavioral Questions (Software Engineer) Context: You are interviewing for a Software Engineer role in ...

Behavioral & LeadershipMotivation & Fit
25
0
194 people solved
Jul 15, 2025
Jane Street logo
Jane Street
Hard
Software Engineer

Reach a Target Using Each Number At Most Once

Reach a Target Using Each Number At Most Once You are given an array of integers nums and an integer target. Decide whether you can build an arithmeti...

Coding & AlgorithmsBacktracking & Recursion
25
0
246 people solved
Sep 14, 2022
Amazon logo
Amazon
Medium
Software Engineer

Explain work-simulation approach under ambiguity

Behavioral: Prioritizing and Delivering Under Ambiguity in a Time-Boxed Simulation Context You are a software engineer in a technical screen. You are ...

Behavioral & Leadership
7
0
74 people solved
Sep 6, 2025
Medium
Data Scientist

Write mini-batch gradient descent

Implement a generic mini-batch gradient descent routine: inputs are differentiable loss L(θ; x), initial θ0, batch size b, steps T, and learning-rate ...

Coding & Algorithms
6
0
61 people solved
Oct 13, 2025
Anthropic logo
Anthropic
Medium
Software Engineer

Detect n-length consecutive sequences

Given an unsorted collection of integers and a parameter n > 0, determine whether there exists a set of n distinct integers that form a run of consecu...

Coding & AlgorithmsArrays & Strings
30
0
284 people solved
Aug 13, 2025
Instacart logo
Instacart
Medium
Software Engineer

Design an inventory system

Design an Inventory Management System with Real-Time Stock and Ordering Problem You are designing an inventory management service for a retail/marketp...

System DesignTransactions & IsolationDistributed Transactions & Idempotency
34
0
375 people solved
Aug 4, 2025
Instacart logo
Instacart
Hard
Software Engineer Locked

Decode a password string into letters

This question evaluates string parsing and encoding/decoding skills, specifically mapping numeric tokens and handling delimiter characters within the ...

Coding & AlgorithmsParsing & Interpreters
17
0
154 people solved
Jan 22, 2026
Shopify logo
Shopify
Medium
Data Scientist

Analyze Trends to Optimize Pirate-Theme Product Strategy

Analyze Trends to Optimize Pirate-Theme Product Strategy Scenario You have explored and summarized the performance of the "Pirate" theme for the Shopi...

Analytics & ExperimentationProduct StrategyPrioritization & Tradeoffs
30
0
101 people solved
Aug 4, 2025
Bank of America logo
Bank of America
Medium
Data Scientist Locked

Show Initiative, Analytical Judgment, and Relationship Building

Practice examples of taking initiative, solving a complex problem through careful analysis, and building a trusted relationship with a teammate or cli...

Behavioral & LeadershipOwnership & ExecutionAmbiguity & Decision Making
1
0
17 people solved
Sep 10, 2026
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