Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions

12.1k

Companies

579

Updated

10.10.2026

12.1k Questions 579 Companies10.10.2026

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_

"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"

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

"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."

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

"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."

CarlosFull Stack, Shopify

"The solution quality is insane. It covers approach, edge cases, time complexity, follow-ups. Nothing else comes close."

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."

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

"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."

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

"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."

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

"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."

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

_The_TaNk_

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

"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."

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

CarlosFull Stack, Shopify

"The solution quality is insane. It covers approach, edge cases, time complexity, follow-ups. Nothing else comes close."

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."

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

"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."

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

"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."

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

"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."

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

Describe a failed project and lessons learned

Describe a project you worked on that ultimately failed or did not meet its goals. Explain: - What the project was trying to achieve and your role. - ...

Behavioral & Leadership

Discuss mentorship experience and outcomes

Behavioral Prompt: Mentorship Experience (Software Engineer HR Screen) Provide a concise, metrics-backed overview of your mentorship experience. 1) Sc...

Behavioral & Leadership

Market a new AI technique

Market a new AI technique Context You are a software engineer introducing a new technique and planning a public blog post to drive developer adoption....

Implement sliding-window device anomaly

Streaming detection algorithm: Implement a function process_logins(stream) that consumes a time-ordered stream of login events (user_id, ts, device_id...

Compute urn-draw probabilities and expectations

Urn Drawing Probabilities (Without Replacement) You have an urn with 12 balls: 5 red (R) and 7 blue (B). You draw two balls uniformly at random withou...

Compute same-day acceptance metrics last week

Assume today is 2025-09-01; interpret 'last week' as 2025-08-25 through 2025-08-31 inclusive, using UTC dates. You have the following schema and sampl...

Data Manipulation (SQL/Python)

Explain a graphics testing project in depth

Explain a graphics testing project in depth Behavioral: End-to-End Walkthrough of a Graphics Testing Project Context: You are interviewing for a softw...

Behavioral & LeadershipProject Deep DiveTesting & Quality

Machine Learning Engineer Locked

Walk Through an ML Project

This question evaluates end-to-end machine learning engineering competencies, including problem framing and impact, individual ownership, data and mod...

Behavioral & LeadershipProject Deep DiveOwnership & Execution

Software Engineer Locked

Merge overlapping time intervals

This question evaluates competence in interval and array manipulation, sorting-based algorithm design, overlap detection, and efficient time/space com...

Coding & AlgorithmsIntervals & SchedulingSorting

Compute permutations with repeated letters

Counting Strings with Repeated Characters Problem Given two nonnegative integers m and n, how many distinct strings can be formed that contain exactly...

Statistics & MathMath & Number Theory

Identify Repeat Advertisers from Consecutive Weeks

Data Manipulation (SQL/Python)

17 people solved

Aug 4, 2025

Analyze Recent Calling Behavior in France Using SQL

Data Manipulation (SQL/Python)

Set second tree values by subtree sums

Given the roots of two complete binary trees T1 and T2 that have identical structure and the same number of nodes, replace each value in T2 with the s...

Coding & AlgorithmsTrees

Explain Your Resume and Behavioral Examples

Behavioral & Leadership Technical Screen — Data Engineer Context You will be assessed on impact, decision-making under ambiguity, stakeholder manageme...

Behavioral & Leadership

Update No-Intercept Regression Slopes Across Batches

Data arrives in M batches. Each x_batches[b] and y_batches[b] is a matrix with the same number N of columns and the same number of rows within batch b...

Machine Learning Engineer Locked

Design an ML Platform Portal

This question evaluates design and engineering skills for building an end-to-end machine learning platform, including experiment tracking, model regis...

ML System DesignMLOps & Model ServingModel Monitoring & Drift

Compute subarray span for each element

You are given an integer array nums of length n. For each index i (0 <= i < n), define ans[i] as the maximum possible length of a contiguous subarray ...

Model and measure trading transaction costs

Modeling and Incorporating Transaction Costs in an Event-Driven Trading Strategy Context You are designing an event-driven trading strategy that react...

Analytics & Experimentation

Compute reachability and minimal-time same-type scheduling

1) Given four integers a, b, c, d (1 <= a, b, c, d <= 1000), you may perform the following operations any number of times and in any order: (a, b) -> ...

Detect intersection of two linked lists

Given two singly linked lists that may converge to share a common tail, determine whether they intersect and return the first node at which they join....

Coding & Algorithms

83 people solved

Sep 6, 2025

Tech Interview Questions

Describe a failed project and lessons learned

Discuss mentorship experience and outcomes

Market a new AI technique

Implement sliding-window device anomaly

Compute urn-draw probabilities and expectations

Compute same-day acceptance metrics last week

Explain a graphics testing project in depth

Walk Through an ML Project

Merge overlapping time intervals

Compute permutations with repeated letters

Identify Repeat Advertisers from Consecutive Weeks

Analyze Recent Calling Behavior in France Using SQL

Set second tree values by subtree sums

Explain Your Resume and Behavioral Examples

Update No-Intercept Regression Slopes Across Batches

Design an ML Platform Portal

Compute subarray span for each element

Model and measure trading transaction costs

Compute reachability and minimal-time same-type scheduling

Detect intersection of two linked lists

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Blind 75

ML System Design

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