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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
Affirm logo
Affirm
Medium
Data AnalystSenior+

Choose the Next Product or Vertical for a Lending Business

Choose the Next Product or Vertical for a Lending Business A lending business is deciding which product or industry vertical to invest in next. Propos...

Product / Decision MakingBusiness Case AnalysisProduct Strategy
2
0
43 people solved
Sep 27, 2026
Goldman Sachs logo
Goldman Sachs
Medium
Software Engineer

Binary Tree Completeness Check, Then B-Tree Indexes and Why Not Index Every Column

This phone-screen round started with a short binary-tree coding problem and then followed the tree into database internals: B-trees, and when to add i...

Software Engineering FundamentalsIndexing & Query PerformanceDatabase Internals
3
0
26 people solved
Oct 5, 2026
Microsoft logo
Microsoft
Medium
Software EngineerSenior+ Locked

Find the First Value Repeated During a Left-to-Right Scan

Find the earliest repeated value in scan order, then analyze sorted-input and no-built-in-set variants without losing the original ordering rule.

Coding & AlgorithmsArrays & Strings
9
0
126 people solved
Sep 10, 2026
OpenAI logo
OpenAI
Hard
Software Engineer Locked

Follow Graph with Cheap Snapshots and Top-K Follow Recommendations

Build a one-directional follow graph that supports cheap snapshots and queries against past snapshots, then recommend the top k accounts a user should...

Software Engineering FundamentalsData Structure DesignGraphs
7
0
87 people solved
Sep 20, 2026
Verkada logo
Verkada
Medium
Software Engineer Locked

Design a Massive Live Two-Choice Voting System

Design a nationwide live A/B voting system with immediate voter feedback and an accurate final host result. The solution separates durable acceptance,...

System Design
11
0
135 people solved
Sep 4, 2026
Jane Street logo
Jane Street
Hard
Software Engineer Locked

Optimize a Two-Box Place-or-Take Game

A one-player game has two opaque boxes and lasts exactly 100 turns. Explain the assumptions and derivation clearly, check edge cases, and show how the...

Statistics & MathPuzzles & Brainteasers
77
0
663 people solved
Aug 3, 2026
Attentive logo
Attentive
Medium
Software EngineerSenior+

Return Log Entries Within an Inclusive Time Range From a Sorted Log

You are given a log that has already been loaded into memory as a list of entries. Each entry is a pair (timestamp, message), where timestamp is an in...

Coding & AlgorithmsBinary Search
8
0
63 people solved
Sep 24, 2026
Rippling logo
Rippling
Medium
Software Engineer Locked

Design a News Aggregation System (Google News-style)

This question assesses a candidate's ability to design a large-scale news aggregation system, covering distributed crawling, article deduplication, ev...

System DesignSearch & Feed SystemsDistributed Coordination
317
3
3522 people solved
Jun 30, 2026
Goldman Sachs logo
Goldman Sachs
Medium
Software Engineer

Find the Root of the Largest Tree in a Child-to-Parent Forest

You are given a list of child-to-parent relationships that together describe a forest, that is, a collection of disjoint rooted trees. Each relationsh...

Coding & AlgorithmsTreesGraphs
7
0
55 people solved
Aug 17, 2026
Google logo
GoogleAmazonTCS

Also asked at TCS, Meta, Microsoft, Apple, Bloomberg, Infosys, TikTok, Nokia, Oracle, Qualcomm, Visa, Yandex, Goldman Sachs, Cisco, NVIDIA, SAP, Paytm, JPMorgan Chase

Easy
Software Engineer

Reverse Linked-Node Order by Iteration and Recursion

Problem Reverse a singly linked list and return the reversed chain's head. Preserve the supplied ListNode pointer interface with val and next fields; ...

Coding & AlgorithmsLinked Lists
1
0
14 people solved
Disney logo
Disney
Easy
Data EngineerSenior+

Data Pipeline Design for Cloud and Hybrid On-Prem Environments on AWS and Azure

Design a data pipeline that moves data from a company's operational systems into an analytics platform, where analysts, dashboards and downstream appl...

System DesignETL & Data PipelinesCloud Platforms
3
0
37 people solved
Aug 31, 2026
Optiver logo
Optiver
Medium
Software Engineer Locked

Count Straight-Line Occurrences of a Word in a Letter Grid, Rows and Columns Only

Count how many times a target word appears in a grid of letters when read in a straight line along a row or down a column, with no turns and overlappi...

Coding & AlgorithmsGrids & Matrices
15
1
141 people solved
Sep 13, 2026
Cursor logo
Cursor
Medium
Software Engineer Locked

Implement and Explain a Merkle Tree

Clarify a Merkle-tree coding contract before implementing construction, hashing conventions, optional proofs or updates, edge cases, and complexity.

Software Engineering Fundamentals
30
0
273 people solved
Aug 21, 2026
Google logo
Google
Medium
Software Engineer Locked

Determine Whether the Last Array Index Is Reachable by Forward Jumps

Decide whether the last index of an array can be reached from the first when each value gives the longest forward jump allowed from that position. Tes...

Coding & AlgorithmsGreedy
23
1
220 people solved
Sep 7, 2026
Pylon Lending logo
Pylon Lending
Medium
Software Engineer

Build a Chainable Python SQL Query Builder with Where, Alias and Join Support

Implement a small ORM-style query builder in Python. An existing test suite drives it through a fluent API and compares the string returned by render(...

Software Engineering FundamentalsLow-Level Design (OOP)Parsing & Interpreters
5
0
44 people solved
Sep 19, 2026
Apple logo
Apple
Medium
Software Engineer

Count the Nodes in a Chain Reachable Only Through Left and Right Links

A chain of nodes is linked in a line. Each node can reach only its two neighbors, the node on its left and the node on its right; there is no head poi...

Coding & AlgorithmsLinked Lists
7
0
66 people solved
Jul 13, 2026
SIG (Susquehanna) logo
SIG (Susquehanna)
Easy
Software Engineer Locked

Design a Cash Register with Inventory and Profit Tracking

Design an object-oriented cash register that tracks inventory lots, commits multi-product sales, and reports realized gross profit. The interview prob...

Software Engineering FundamentalsLow-Level Design (OOP)Concurrency
28
0
319 people solved
Aug 3, 2026
Bnsf logo
Bnsf
Hard
Software Engineer Locked

Unify Notification Services Without Duplicate Delivery

Design a unified multi-channel notification service with stable idempotency, preferences, retries, callbacks, observability, and safe migration.

System Design
12
0
100 people solved
Aug 19, 2026
Glean logo
Glean
Medium
Software EngineerNew Grad

Evaluate an Integer Expression with + - * / and No Parentheses

Implement a basic calculator for expressions without parentheses. The source describes it only as "the basic version, without parentheses". This versi...

Coding & AlgorithmsParsing & InterpretersStacks & Queues
4
0
56 people solved
Sep 30, 2026
NVIDIA logo
NVIDIA
Medium
Software Engineer

How AI Coding Tools Change Software Development and When to Trust Their Output

How is AI changing the way software is written, and should engineers trust the code that AI tools produce? This was another of the director's open-end...

Software Engineering FundamentalsAI-Assisted DevelopmentCode Quality & Maintainability
3
0
27 people solved
Oct 1, 2026
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