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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
18.6k
Companies
980
Updated
11.12.2026
18.6k Questions 980 Companies11.12.2026
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
Intuit logo
Intuit
Medium
Data Scientist

Explain a non-linear industry switch

Behavioral Interview Prompt — Transition from Semiconductor to SaaS Analytics You are in an HR screen for a Data Scientist role. The interviewer chall...

Behavioral & LeadershipMotivation & FitAmbiguity & Decision Making
13
0
102 people solved
Oct 13, 2025
DoorDash logo
DoorDash
Medium
Software Engineer

Implement and compare round-robin and consistent hashing

Implement a round-robin load balancer that selects among service nodes, skipping unavailable nodes and wrapping around correctly. Fix typical pitfalls...

Coding & AlgorithmsData Structure DesignPartitioning & Consistent Hashing
15
0
238 people solved
Sep 6, 2025
Pinterest logo
Pinterest
Medium
Software Engineer

Demonstrate culture fit with examples

Behavioral & Leadership Interview (Software Engineer Onsite) You are preparing for an onsite behavioral and leadership interview for a Software Engine...

Behavioral & LeadershipConflict & CollaborationAmbiguity & Decision Making
22
0
177 people solved
Sep 6, 2025
Google logo
GoogleAmazonMicrosoftGoldman Sachs

Also asked at Microsoft, Goldman Sachs

Hard
Software Engineer

Schedule Tasks with the Least Starting Energy

Problem Each pair in tasks is [actual, minimum]: a task requires at least minimum energy before starting and consumes actual energy on completion. Fin...

Coding & AlgorithmsGreedySorting
1
0
10 people solved
Google logo
Google
Medium
Software Engineer Locked

Design an Online Coding Judge Platform

This question evaluates a candidate's competencies in large-scale system design, secure multi-tenant execution and sandboxing, capacity planning, queu...

System DesignSandboxing & IsolationSystem Design Fundamentals
142
0
976 people solved
May 2, 2026
Qube Research & Technologies logo
Qube Research & Technologies
Hard
Software Engineer Locked

Compute expected days until no whole pills

This question evaluates understanding of probability and expected value, modeling of state-based stochastic processes (Markov chains), and the ability...

Coding & Algorithms
10
0
97 people solved
Jan 15, 2026
ByteDance logo
ByteDance
Medium
Data Scientist

Compute Minimum Parentheses Additions

Given a string s consisting only of the characters '(' and ')', compute the minimum number of parentheses that must be inserted anywhere in the string...

Coding & Algorithms
5
0
75 people solved
Apr 19, 2026
Uber logo
Uber
Medium
Software EngineerSenior+ Locked

Implement stream queries and bounded-difference subarrays

This question evaluates proficiency in data structures and algorithmic problem-solving, covering streaming uniqueness tracking (first-non-repeated ele...

Coding & AlgorithmsStacks & QueuesTwo Pointers & Sliding Window
14
0
89 people solved
May 8, 2026
Aurora logo
Aurora
Hard
Software Engineer

Implement a reference-counted smart pointer

Implement a minimal C++ reference-counted smart pointer similar to std::shared_ptr. Requirements: - Create a class template SharedPtr<T> that manages ...

Coding & AlgorithmsMemory ManagementProgramming Languages
6
0
129 people solved
Jan 28, 2026
OpenAI logo
OpenAI
Medium
Machine Learning Engineer Locked

Find the First Working Version

This question evaluates understanding of search algorithms, version normalization, and monotonic predicates, along with competency in parsing and orde...

Coding & Algorithms
17
0
110 people solved
Feb 1, 2026
Pinduoduo logo
Pinduoduo
Hard
Software EngineerSenior+ Locked

Present Evidence for Professional Strengths and Weaknesses

Present a professional strength and development area using concrete work evidence, honest progress, and actions within your control.

Behavioral & LeadershipSelf-Awareness & Growth
2
0
22 people solved
Aug 22, 2026
LinkedIn logo
LinkedIn
Medium
Data Scientist

Implement fast sampling for weighted k-sided die

You must sample from a categorical distribution over k outcomes with probabilities p1..pk (sum to 1) without using built-in categorical samplers. You ...

Coding & AlgorithmsProbabilityMath & Number Theory
6
0
127 people solved
Oct 13, 2025
Meta logo
Meta
Medium
Software EngineerSenior+ AI

Solve Three Coding Interview Problems

The interview included three coding tasks: 1. Common ancestor in an N-ary tree You are given the root of an N-ary tree and two target nodes. Determ...

Coding & Algorithms
8
0
102 people solved
Feb 2, 2026
OpenAI logo
OpenAI
Hard
Machine Learning Engineer

Build and troubleshoot image classification and backprop

Build and troubleshoot image classification and backprop CIFAR-like Noisy Dataset: Baseline, Data Quality Plan, and First-Principles Backprop Context:...

Machine LearningML CodingAnnotation & Label Quality
94
0
715 people solved
Jul 27, 2025
Google logo
Google
Medium
Software EngineerNew Grad Locked

Reason About an Endpoint-Only Interval Score

Derive why an interval-minus-interior score depends only on its endpoints, then solve the linear selection problem while making tied-index behavior ex...

Software Engineering Fundamentals
3
0
28 people solved
Jun 7, 2026
Axon logo
Axon
Medium
Software Engineer

Answer tough self-awareness and team questions

In a director-level behavioral interview, answer the following questions clearly and professionally: 1. What is something people have misunderstood ab...

Behavioral & LeadershipSelf-Awareness & GrowthMentoring & Team Growth
27
0
232 people solved
Feb 8, 2026
Visa logo
Visa
Medium
Software EngineerSenior+ Locked

Count Connected Groups in a Relationship Matrix

Count the transitive connected groups represented by a symmetric relationship matrix. Candidates should explain graph traversal or union techniques, v...

Coding & Algorithms
5
0
83 people solved
Aug 3, 2026
Amazon logo
Amazon
Medium
Software Engineer Locked

Explain What You Want in Your Next Role

Explain next-role motivation by connecting personal goals and evidence-backed strengths to verified team needs, while acknowledging open questions and...

Behavioral & LeadershipMotivation & Fit
1
0
16 people solved
Sep 14, 2026
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
3
0
60 people solved
Feb 10, 2026
Amazon logo
Amazon
Medium
Product Manager

Root-Cause a 10% Decline in Amazon Website Users and Plan the Response

You are a product manager at Amazon. The team has just reported that the number of users on an Amazon website is down 10%. Explain how you would work ...

Analytics & ExperimentationMetric DiagnosticsSegmentation & Cohort Analysis
1
0
13 people solved
Apr 20, 2026
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