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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
Google logo
Google
Medium
Data Engineer

Explore and Clean Unexplained 2D Image Arrays with NumPy

In a 45-minute technical interview for a machine learning data engineer role on a team that works heavily with image data, you are given several 2D Nu...

Data Manipulation (SQL/Python)Data Cleaning & WranglingPandas & Python Data
1
0
12 people solved
Nov 7, 2026
Google logo
Google
Hard
Data Analyst

Investigate a Drop in Sales

Investigate a Drop in Sales Sales have dropped. How would you investigate the cause and decide what to do next? Begin by clarifying the sales definiti...

Analytics & ExperimentationMetric DiagnosticsData Quality & Validation
10
0
197 people solved
Sep 9, 2026
Harvey logo
Harvey
Medium
Software Engineer

Spreadsheet Formula Engine with Incremental Recalculation of Dependent Cells

Implement a small spreadsheet formula engine. Cells have names such as A1 or B12. A cell holds either a number or a formula that refers to other cells...

Software Engineering FundamentalsGraphsParsing & Interpreters
4
0
51 people solved
Oct 10, 2026
Pinterest logo
Pinterest
Medium
Software Engineer Locked

Fewest Board Switches to Travel Between Two Pins via Shared Boards

Given boards that each hold a list of pins, where one pin can appear on several boards, compute the fewest board switches needed to travel from a star...

Coding & AlgorithmsGraphs
31
2
324 people solved
Sep 7, 2026
OpenAI logo
OpenAI
Medium
Software Engineer

Social Graph with Follow/Unfollow, Snapshots, History Queries and Recommendations

Implement an in-memory social graph in which users follow and unfollow other users. Besides the current relationships, the class must take snapshots o...

Software Engineering FundamentalsData Structure DesignGraphs
8
0
106 people solved
Oct 9, 2026
Rippling logo
Rippling
Hard
Software Engineer Locked

Bill Deliveries with Historical Rates and Deferred Rounding

Bill deliveries with start-time historical rates, duplicate suppression, overlapping jobs, exact sub-cent accumulation, and configurable final half-up...

Coding & AlgorithmsData Structure DesignBinary Search
83
0
906 people solved
Sep 13, 2026
Instacart logo
Instacart
Medium
Software Engineer

Walk Through Your Most Recent Project End to End and Its Trade-offs

Walk the interviewer through the most recent project you worked on, end to end: the problem, what was built, your part in it, and the decisions made a...

Behavioral & LeadershipProject Deep Dive
2
0
23 people solved
Oct 30, 2026
Atlassian logo
Atlassian
Easy
Software Engineer

Per-Caller Request Limiter Over Non-Decreasing Time Buckets

You are implementing a simple rate limiter that counts requests in discrete time buckets. Each request belongs to a time bucket, given as an integer, ...

Coding & AlgorithmsRate LimitingData Structure Design
34
0
365 people solved
Aug 13, 2026
Walmart Labs logo
Walmart Labs
Easy
Software Engineer

Merge Overlapping Time Intervals Given as Parallel Start and End Lists

You receive time intervals as two lists of equal length: starts[i] and ends[i] are the start time and end time of interval i, and the intervals are in...

Coding & AlgorithmsIntervals & Scheduling
2
0
16 people solved
Nov 6, 2026
Coreweave logo
Coreweave
Medium
Software Engineer

Design a Notification System for Bursty Writes of 1M per Second

Design a notification system. The interviewer pasted a long list of requirements that is not available here, so confirm the requirements below or stat...

System DesignReal-Time SystemsMessaging & Event-Driven
11
0
105 people solved
Sep 29, 2026
Anthropic logo
Anthropic
Medium
Product Manager

Choosing Which Model Capabilities to Improve Next in Claude Sonnet

You are a product manager at Anthropic responsible for Claude Sonnet, the middle tier of the Claude model family, between the smaller Haiku and the la...

Product Design & StrategyAI Product ManagementLLM Evaluation
4
0
61 people solved
Oct 11, 2026
Stripe logo
Stripe
Medium
Software Engineer

Payout Scheduler: Fixed Intervals, Per-Merchant Schedules and Hold Periods

You are building the payout calculation for a payments platform. Merchants accept transactions, and the platform periodically pays the accumulated mon...

Software Engineering FundamentalsMath & Number Theory
2
0
22 people solved
Oct 25, 2026
OpenAI logo
OpenAI
Medium
Software Engineer

Spreadsheet engine with setCell/getCell, cell references, and cycle detection

Implement a spreadsheet engine with two operations: - set_cell(cell, content) stores the content of a cell (setCell in camelCase languages). A cell is...

Software Engineering FundamentalsGraphsData Structure Design
64
2
588 people solved
Sep 28, 2026
NVIDIA logo
NVIDIA
Hard
Software Engineer

Fetch Paginated Medical Records and Filter by Field Rules and Historical Average Weight

Write a program that collects medical records from an HTTP endpoint and returns the ones that meet a set of conditions. - You are given a URL. Each re...

Software Engineering FundamentalsAPI Integration & HTTP ClientsData Cleaning & Wrangling
9
0
83 people solved
Oct 13, 2026
Affirm logo
Affirm
Medium
Software Engineer

Hiring Manager Behavioral Interview: Challenging Project, Deadlines, Cross-Team Work

In a hiring-manager interview, the conversation runs through a series of behavioral and experience questions. You are asked to introduce yourself and ...

Behavioral & LeadershipProject Deep DiveConflict & Collaboration
20
0
144 people solved
Sep 30, 2026
Confluent logo
Confluent
Easy
Software EngineerNew Grad

Count Length-k Windows That Are Strictly Increasing

Given an integer array nums and an integer k, count the contiguous windows of exactly k elements whose values are strictly increasing from left to rig...

Coding & AlgorithmsTwo Pointers & Sliding Window
0
0
13 people solved
Nov 5, 2026
Valon logo
Valon
Medium
Software Engineer

Loan Ledger: Fee-First Payments and Out-of-Order Event Processing

You are implementing a simplified loan-accounting component. Loan accounting tracks the state of a loan over time, and this version tracks only two fi...

Software Engineering FundamentalsData Structure Design
28
0
258 people solved
Sep 24, 2026
OpenAI logo
OpenAI
Medium
Software Engineer

Design a metrics monitoring system, going deep on one or two components

Design a metrics monitoring system. Services and hosts across a fleet emit numeric measurements over time, such as request counts, error counts, laten...

System DesignObservabilityStorage & Sharding
23
0
317 people solved
Oct 1, 2026
Anthropic logo
Anthropic
Medium
Software Engineer Locked

Fix a Buggy LRU Cache, Then Make It Durable with a Write-Ahead Log

Debug a flawed least-recently-used cache by finding each bug with a reproducing call sequence and fixing it, then make the cache durable across crashe...

Software Engineering FundamentalsData Structure DesignDebugging
37
1
270 people solved
Sep 18, 2026
Bnsf logo
Bnsf
Medium
Software EngineerSenior+

Minimum Station Tracks for a Schedule of Train Arrivals and Departures

A railway station must handle a schedule of trains. Each train occupies one station track from the moment it arrives until the moment it departs, and ...

Coding & AlgorithmsIntervals & Scheduling
3
0
22 people solved
Oct 25, 2026
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