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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
Walmart Labs logo
Walmart Labs
Medium
Software Engineer

Implement lexicographically smallest Two Sum

You are given an unsorted integer array nums and an integer target. Return the indices [i, j] (0-based) such that i < j and nums[i] + nums[j] == targe...

Coding & AlgorithmsArrays & Strings
33
0
370 people solved
Mar 4, 2026
Gimlet Labs logo
Gimlet Labs
Medium
Member of Technical Staff, ML Systems

Design CPU-Cycle Window Alignment for Misaligned Time Series

Interview Prompt Design and implement an algorithm that buckets two CPU-cycle time series whose timestamps do not align and produces time windows on a...

Software Engineering Fundamentals
3
0
47 people solved
Apr 15, 2026
Wayfair logo
Wayfair
Medium
Applied Scientist

Rank Homepage Modules for an E-Commerce Product

Design a ranking system for modules on an e-commerce homepage. Candidate modules include trending products and seasonal or holiday sales. Focus on the...

ML System DesignMetrics & KPIsExperiment Design (A/B Testing)
0
0
5 people solved
Sep 10, 2026
Netflix logo
Netflix
Medium
Software Engineer Locked

Design a Scheduler for ML Training and Batch Inference Jobs

Design a scheduler for training, batch inference, and lower-priority evaluation jobs across shared compute resources. Model workload-specific needs, a...

System Design
4
0
61 people solved
Jun 24, 2026
Ambience logo
Ambience
Hard
Machine Learning Engineer

Design an ICD-10 Prediction System for Clinical Records

Design a machine learning system that takes a clinical case record and predicts the relevant ICD-10 diagnosis codes. Explain the prediction target, ho...

ML System DesignModel EvaluationAnnotation & Label Quality
2
0
21 people solved
Sep 3, 2026
Vercel logo
Vercel
Medium
Software Engineer

Design hit counter for last 5 minutes

You are launching a new webpage and need a last-minute server-side metric to track popularity in real time. Implement a hit counter that supports the ...

Coding & AlgorithmsData Structure DesignStacks & Queues
28
0
194 people solved
Jan 1, 2026
Instacart logo
Instacart
Medium
Software Engineer

Respond to Negative Feedback About Your Work

Describe a time you received negative feedback about your work. What was the feedback, how did you determine what was valid, and what did you do in re...

Behavioral & LeadershipConflict & CollaborationCommunication & Stakeholders
2
0
23 people solved
Aug 28, 2026
Atlassian logo
Atlassian
Medium
Software Engineer

Design an access control system (RBAC + resource-based)

Design an authorization system that supports both: - Role-Based Access Control (RBAC): users/groups have roles (e.g., Admin, Editor, Viewer) that gran...

System DesignAuthentication & AuthorizationAPI Design
22
1
183 people solved
Jan 5, 2026
Microsoft logo
Microsoft
Medium
Software Engineer Locked

Reason About Alien Dictionary Ordering

Understand Alien Dictionary graph construction, prefix invalidity, cycle detection, and why source-permitted multiple orders need semantic validation.

Software Engineering Fundamentals
2
0
33 people solved
Aug 29, 2026
Squarepoint logo
Squarepoint
Medium
Risk Technology Software EngineerSenior+ Locked

Find a Target Sum Using Two Sorted Arrays

Determine whether two sorted arrays contain one value each that sum to a target using opposite-end pointers and overflow-safe arithmetic.

Coding & Algorithms
3
0
35 people solved
Aug 16, 2026
Disney logo
Disney
Medium
Software Engineer

Discuss Your Proudest Project and Interest in a Role

Describe the project you are most proud of and explain why you are interested in the role you are interviewing for. Connect your contribution and lear...

Behavioral & LeadershipProject Deep DiveMotivation & Fit
0
0
8 people solved
Sep 8, 2026
Amazon logo
Amazon
Medium
Software Engineer Locked

Choose Work-Style Assessment Responses

This question evaluates work-style and behavioral competencies such as initiative, adaptability, dependability, attention to detail, and internal cons...

Behavioral & Leadership
25
0
207 people solved
May 28, 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
270 people solved
Mar 1, 2026
Imc logo
Imc
Medium
Data ScientistIntern Locked

Motivation for Quantitative Research

Give a truthful, role-specific explanation for pursuing quantitative research, grounded in hypotheses, noisy data, mathematics, coding, and uncertaint...

Behavioral & Leadership
2
0
20 people solved
Aug 14, 2026
Databricks logo
Databricks
Medium
Software Engineer

Implement a snapshotable set with iterators

Implement a SnapshotSet data structure with the following API: add(x), remove(x), contains(x), snapshot() -> sid, and iterate(sid) -> iterator over th...

Coding & AlgorithmsData Structure Design
52
0
757 people solved
Aug 11, 2025
Apple logo
Apple
Medium
Frontend Engineer Locked

Build an Accessible Recursive Expand-and-Collapse Tree in React

Implement an accessible recursive React tree whose expandable branches keep independent state as users toggle other nodes. The exercise covers stable ...

Software Engineering Fundamentals
5
0
57 people solved
Jul 13, 2026
Runloop logo
Runloop
Medium
Software Engineer Locked

Return a Topological Order or Detect a Cycle

Return a deterministic topological ordering of a directed graph or an empty result when a cycle exists. Ignore duplicate edges and choose the smallest...

Coding & Algorithms
2
0
26 people solved
Aug 23, 2026
Expedia logo
Expedia
Medium
Software Engineer Locked

Discuss Production Recovery, Mentoring, Challenge, AI, and Conflict

Prepare concise real examples about production recovery, mentoring, a challenging project, responsible AI work, and substantive conflict. Effective an...

Behavioral & Leadership
3
0
27 people solved
Jul 16, 2026
Snowflake logo
Snowflake
Medium
Software Engineer

Solve Array Distance and Wiki Navigation

You are given two independent coding tasks. For each task, clarify edge cases, implement the function, and write meaningful test cases. Task 1: Minimu...

Coding & Algorithms
8
0
96 people solved
Apr 23, 2026
Amazon logo
Amazon
Easy
Data Scientist

Solve two string DP/hash problems

Solve the following two coding questions. 1) Unique Morse Code Transformations You are given an array of strings words (lowercase English letters). Us...

Coding & AlgorithmsBacktracking & Recursion
92
0
697 people solved
Feb 13, 2026
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