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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
Headlands logo
Headlands
Medium
Data Scientist

What Cross-Validation Reduces: Bias, Variance, Type I or Type II Error

A multiple-choice statistics question asks: what is cross-validation used to reduce? - A. Bias - B. Variance - C. Type I error - D. Type II error Choo...

Machine LearningML FundamentalsModel Evaluation
2
0
19 people solved
Aug 30, 2026
eBay logo
eBay
Easy
Applied Scientist

Behavioral: beyond-scope ownership, manager conflict, and a skip-level deadline at risk

These questions probe ownership and how you handle disagreement and deadline pressure with the people above you. Answer each part with a specific exam...

Behavioral & LeadershipOwnership & ExecutionCommunication & Stakeholders
0
0
8 people solved
Sep 24, 2026
Akuna Capital logo
Akuna Capital
Medium
Software Engineer

Find the Maximum Value in a Binary Tree Recursively

Find the Maximum Value in a Binary Tree Recursively Given the following C++ binary-tree node shape, implement and explain a recursive depth-first func...

Software Engineering Fundamentals
4
0
39 people solved
Aug 26, 2026
Stripe logo
Stripe
Medium
Software EngineerIntern

Schedule Welcome and Expiration Emails from Subscription Records

A subscription service sends automated emails at set points in each customer's subscription, such as a welcome email when the subscription starts and ...

Software Engineering FundamentalsSorting
25
0
171 people solved
Dec 19, 2025
Ramp logo
Ramp
Medium
Software Engineer

Find an Exit in a URL Maze

You are given a starting URL for a web-based maze. Each URL represents one room in the maze. Your task is to write a program that discovers whether th...

Coding & AlgorithmsGraphsAPI Integration & HTTP Clients
54
0
658 people solved
Apr 21, 2026
Glean logo
Glean
Medium
Machine Learning Engineer

Find Earliest Train Route

You are given a discrete train timetable and need to find a valid route through the train network. Each train has an itinerary represented as a sequen...

Coding & Algorithms
18
0
188 people solved
Apr 23, 2026
Plaid logo
Plaid
Easy
Software Engineer

Resolve routing-number to bank mapping

You are given bank-routing data coming from one or more JSON sources. Each source provides a list of records like: `json { "routing": "026009593", "ba...

Coding & AlgorithmsData Cleaning & Wrangling
43
0
477 people solved
Feb 4, 2026
Robinhood logo
Robinhood
Medium
Software EngineerSenior+

Design Payment Processing with Idempotency and Reconciliation

Design a payment-processing service. It accepts payment requests from clients, sends them to an external payment provider, records each outcome durabl...

System DesignPayments & LedgersDistributed Transactions & Idempotency
2
0
25 people solved
Sep 4, 2026
Applied Intuition logo
Applied Intuition
Medium
Software Engineer Locked

Design Sensor Data Processing With AI-Assisted Implementation

Prepare for a sensor-data processing system design prompt where an AI-assisted coding exercise leads into storage and scaling questions. The interview...

System Design
14
0
101 people solved
Jul 5, 2026
Cisco logo
Cisco
Easy
Software Engineer

Python Multiple Inheritance: Which Parent Method Runs When Names Collide

Two classes each define a method with the same name. A third class inherits from both of them. When that method is called on an instance of the third ...

Software Engineering FundamentalsProgramming Languages
0
0
6 people solved
Sep 19, 2026
Amazon logo
Amazon
Medium
Software Engineer

Resolve a Significant Disagreement with a Manager or Colleague

Describe a significant disagreement with a manager or colleague and how you resolved it. Constraints & Assumptions Use a real example and distinguish ...

Behavioral & LeadershipConflict & CollaborationCommunication & Stakeholders
1
0
11 people solved
Sep 14, 2026
Databricks logo
Databricks
Hard
Software Engineer Locked

Design Chat APIs, Storage, and Core Message Flows

Design chat APIs and storage for direct and group conversations, message history, membership changes, and recipient visibility. Define idempotent send...

System DesignAPI DesignDistributed Transactions & Idempotency
11
0
184 people solved
Jul 25, 2026
Netflix logo
Netflix
Easy
Software Engineer Locked

Implement a Key-Value Cache with Per-Entry Expiration

Design a byte-limited key-value cache with independent expiration per entry and oldest-live-entry eviction. Define replacement age, exact expiry behav...

Software Engineering Fundamentals
7
0
77 people solved
Aug 21, 2026
Pinterest logo
Pinterest
Medium
Software Engineer Locked

Rebalance Experiment Buckets with Minimal Reassignment

Rebalance experiment buckets to exact target percentages while retaining as many existing assignments as the contract allows. The challenge focuses on...

Coding & AlgorithmsArrays & Strings
11
0
178 people solved
Jul 23, 2026
Google logo
Google
Medium
Software EngineerSenior+ Locked

Compute the Union of Two Sorted Interval Lists

Compute the union of two sorted, nonoverlapping lists of closed intervals. Merge the two streams in linear time, combining endpoint-touching, duplicat...

Coding & AlgorithmsIntervals & SchedulingTwo Pointers & Sliding Window
45
0
315 people solved
Aug 6, 2026
xAI logo
xAI
Medium
Frontend Engineer

Build a React Typeahead with Async Suggestions and Keyboard Navigation

Build a typeahead component in React: a search input that shows a dropdown of suggestions while the user types. Suggestions come from an asynchronous ...

Software Engineering FundamentalsUI Components & AccessibilityReact & UI Frameworks
1
0
19 people solved
Sep 5, 2026
Oracle logo
Oracle
Medium
Software Engineer Locked

Design a Five-Minute Top-K Error Log Service

Design a fault-tolerant log service that ranks microservices by error count over a trailing five-minute window. The solution separates durable ingesti...

System Design
5
0
44 people solved
Sep 5, 2026
Vanta logo
Vanta
Medium
Software Engineer Locked

Implement Adjacent-Line Uniq

Implement adjacent-line uniq behavior without sorting, grouping only consecutive lines that share the selected exact or case-folded key. Support all, ...

Coding & Algorithms
10
0
136 people solved
Jul 13, 2026
Google logo
Google
Medium
Software Engineer

Design a customer support agent dispatcher that handles mid-request breaks

Design and implement the core of a dispatcher for a customer support team. Customers contact support and wait for help. Human support agents sign in, ...

Software Engineering FundamentalsLow-Level Design (OOP)Simulation & State Machines
0
0
9 people solved
Sep 21, 2026
Amazon logo
Amazon
Medium
Software EngineerNew Grad Locked

Compute Edit Distance

Implement a function that returns the minimum insertions, deletions, and replacements needed to transform one lowercase string into another. Handle em...

Coding & AlgorithmsDynamic Programming
58
1
488 people solved
Jul 15, 2026
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