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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
12.2k
Companies
569
Updated
10.14.2026
12.2k Questions 569 Companies10.14.2026
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
Kikoff logo
Kikoff
Medium
Software Engineer

Parse CSV and format transactions

Given a CSV file containing many transactional records with columns Merchant, Amount, Date (YYYY-MM-DD), and Status, write a script to parse the file ...

Data Manipulation (SQL/Python)
8
0
91 people solved
Aug 12, 2025
Lead Bank logo
Lead Bank
Medium
Software Engineer Locked

Process Calendar Events with Deletion, Pagination, and Overlap Queries

Practice implementing an in-memory calendar that supports inserts, deletions, stable ordering, zero-based pagination, and half-open interval overlap q...

Coding & Algorithms
2
0
28 people solved
Jul 8, 2026
Scale AI logo
Scale AI
Easy
Machine Learning Engineer Locked

Explain LLM post-training methods and tradeoffs

This question evaluates a practitioner's knowledge of LLM post-training methods—including supervised fine-tuning, preference optimization approaches (...

Machine LearningFine-Tuning & Alignment TechniquesAI Safety & Alignment
42
0
405 people solved
Feb 12, 2026
Scale AI logo
Scale AI
Hard
Machine Learning Engineer

Explain Transformers, attention, decoding, RL, and evaluation

Technical Screen: Transformers, Attention, Decoding, RLHF, Evaluation, and Optimization Context: Assume a modern decoder-only LLM unless stated otherw...

Machine LearningTransformers & AttentionLLM Evaluation
37
0
356 people solved
Sep 6, 2025
Pinterest logo
Pinterest
Medium
Data Scientist Locked

Implement weighted random choice

This question evaluates understanding of weighted random sampling, probability distributions, input validation, and algorithmic time and space complex...

Coding & AlgorithmsProbabilityArrays & Strings
20
0
132 people solved
Mar 10, 2026
Hebbia logo
Hebbia
Hard
Machine Learning EngineerSenior+ Locked

Design a Multi-Agent Document Search and Visualization Product

An ML system-design interview about building a multi-agent product for document search, evidence retrieval, and visualization. Candidates must define ...

ML System Design
2
0
31 people solved
Jun 6, 2026
Tesla logo
Tesla
Medium
Software Engineer Locked

Design a Video Sharing Platform

Design a large-scale video platform with resumable uploads, idempotent transcoding, adaptive playback, CDN delivery, access control, and moderation ho...

System Design
2
0
29 people solved
Aug 24, 2026
Waymo logo
Waymo
Hard
Machine Learning EngineerSenior+ Locked

Design a Drop-off Spot Selector

This question evaluates expertise in ML-driven system design for safety-critical autonomous vehicle decisions, covering real-time decision-making, geo...

ML System Design
16
0
248 people solved
Mar 23, 2026
Applied Intuition logo
Applied Intuition
Medium
Software Engineer Locked

Validate JSON against a protobuf-like schema

This question evaluates schema validation and data-typing skills, including understanding of JSON primitive types, recursive message structures, and c...

Coding & Algorithms
5
0
47 people solved
Jan 22, 2026
Motive logo
Motive
Hard
Software Engineer

Design real-time delivery tracking system

Question Design a real-time delivery / courier-tracking platform that gives dispatchers, operations, and customers live visibility into each courier's...

System DesignGeo & Delivery SystemsReal-Time Systems
31
0
554 people solved
Aug 13, 2025
Retool logo
Retool
Hard
Software Engineer

Design car rental schema and APIs

System Design: Car Rental Platform Design the backend for a car rental platform (think a regional chain like Hertz or Enterprise). The system lets cus...

System DesignSystem Design FundamentalsStorage & Sharding
21
0
211 people solved
Jul 26, 2025
Read.Ai logo
Read.Ai
Medium
Software Engineer

Implement a per-user API rate limiter

You are building an API gateway that must enforce per-user rate limits. Task Implement a rate limiter with the following API: - RateLimiter(int maxReq...

Coding & AlgorithmsRate Limiting
13
0
113 people solved
Nov 3, 2025
Nuro logo
Nuro
Medium
Software Engineer Locked

Design fast search for AV raw logs

This question evaluates a candidate's ability to design scalable logging and search infrastructure for autonomous-vehicle telemetry, testing skills in...

System DesignSearch & Feed SystemsStorage & Sharding
16
0
239 people solved
Feb 11, 2026
Waymo logo
Waymo
Easy
Data Scientist Locked

How validate a driving simulation is realistic?

This question evaluates skills in statistical validation of simulations, distributional comparison between real and simulated driving data, scenario-s...

Analytics & ExperimentationHypothesis Testing
35
0
341 people solved
Jan 17, 2026
Airbnb logo
Airbnb
Hard
Software Engineer

Design API for split-stay combinations

Question Design an HTTP API endpoint that, given a requested date range and a collection of Airbnb listings with their availability, returns all valid...

System DesignAPI Design
77
0
527 people solved
Sep 6, 2025
OneMain Financial logo
OneMain Financial
Easy
Data ScientistNew Grad

Evaluate shift from branch to digital channel

Business case: OneMain credit card — branch vs. digital acquisition OneMain runs a credit-card business with two acquisition/servicing flows: - Tradit...

Analytics & ExperimentationBusiness Case AnalysisGrowth & Monetization
11
0
175 people solved
Oct 7, 2025
Visa logo
Visa
Medium
Software EngineerSenior+ Locked

Find the Minimum Edge Score on a Path Between Two Cities

Find the minimum edge score achievable on a route between two cities in a large undirected road network, where revisiting cities and roads is allowed....

Coding & Algorithms
8
0
59 people solved
Jul 9, 2026
Meta logo
Meta
Medium
Software Engineer Locked

Design a Concurrent, Memory-Bounded Tally Service

Design a tally service that records timestamped events and answers inclusive range-count queries, beginning with an exact baseline and evolving toward...

Software Engineering FundamentalsData Structure DesignConcurrency
13
0
137 people solved
Jul 1, 2026
Microsoft logo
Microsoft
Medium
Machine Learning EngineerIntern

Compute precision/recall from a flaky top-k API

You have 10 image files. Each file has a ground-truth label indicating whether it contains a dog. You can call an API like searchDogs(k) which is inte...

Software Engineering FundamentalsModel Evaluation
9
0
102 people solved
Feb 9, 2026
Rippling logo
Rippling
Easy
Software Engineer AI Locked

Build an Expense Policy Rule Engine

This question evaluates implementing rule-evaluation logic, data modeling for expense records and rule representations, operator semantics, and design...

Coding & Algorithms
15
0
150 people solved
Apr 17, 2025
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