Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions

12.1k

Companies

579

Updated

10.10.2026

12.1k Questions 579 Companies10.10.2026

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_

"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"

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

"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."

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

"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."

CarlosFull Stack, Shopify

"The solution quality is insane. It covers approach, edge cases, time complexity, follow-ups. Nothing else comes close."

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."

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

"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."

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

"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."

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

"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."

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

_The_TaNk_

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

"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."

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

CarlosFull Stack, Shopify

"The solution quality is insane. It covers approach, edge cases, time complexity, follow-ups. Nothing else comes close."

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."

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

"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."

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

"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."

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

"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."

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

Solve parsing, counting, ranges, and window problems

Solve the following four algorithm problems: 1) Expression evaluator with + and : Given a string s containing non-negative integers, '+' and '' operat...

Count buggy vs non-buggy by employer

Count buggy vs non-buggy submissions for each employer_id, including employers with zero submissions. Return employer_id, buggy_count, non_buggy_count...

Data Manipulation (SQL/Python)

23 people solved

Oct 13, 2025

Analyze Distribution of Daily Page Shares Per User

Engagement Distributions and Cohort Dynamics You are analyzing per-user, per-day engagement. Assume the panel includes all users, inactive days count ...

Statistics & MathProbabilitySegmentation & Cohort Analysis

145 people solved

Jul 12, 2025

Handle diverse styles and give constructive feedback

Behavioral: Collaboration, diversity, feedback, documentation Answer the following using specific examples from your past experience. 1. Diversity & i...

Behavioral & Leadership

Lead structured response to accuracy incident

Incident Response Plan: Spike in Incorrect Payments for CA Users Aged 18–24 Scenario Since 00:00 today, the share of incorrect payments for users aged...

Behavioral & LeadershipMetric DiagnosticsModel Monitoring & Drift

Answer common behavioral questions

Behavioral Interview: STAR Responses for a Technical Screen (Software Engineer) You are preparing for a technical screen that includes behavioral and ...

Behavioral & LeadershipLeadership & InfluenceConflict & Collaboration

Resolve Two Knights-and-Knaves Statements

Resolve Two Knights-and-Knaves Statements An island has knights, who always tell the truth, and knaves, who always lie. Two people, A and B, make thes...

Determine Discount's Effect on Conversion Rate with A/B Testing

Determine Discount's Effect on Conversion Rate with A/B Testing A/B Test Design: 10% Discount Impact on Conversion Scenario An e-commerce retailer wan...

Analytics & Experimentation

Demonstrate Bias for Action

Demonstrate Bias for Action Behavioral Prompt: Acting With Incomplete Data (Bias for Action) Describe a time you moved a project forward despite havin...

Behavioral & Leadership

Evaluate Integrity in Workplace Culture Through HR Screening

Workplace Culture and Integrity HR Screen You are completing an HR screening survey for a data role. The survey assesses how you balance speed, proces...

Behavioral & Leadership

Site Reliability Engineer Locked

Generate combinations and permutations

This question evaluates a candidate's ability to implement combinatorial generation of combinations and permutations using distinct elements, testing ...

Cover intro, projects, interest, goals, Go rating

Behavioral & Leadership Technical Screen — Software Engineer (Postman) Context: You are interviewing for a Software Engineer role in a technical scree...

Behavioral & Leadership

Design A/B Test for New Recommendation Algorithm Launch

Design A/B Test for New Recommendation Algorithm Launch A/B Test Design: New Recommendation Algorithm Objective Design a rigorous A/B test to estimate...

Analytics & Experimentation

Diagnose and experiment to reduce late deliveries

Two-Sided Delivery Platform: Rising Late Deliveries You are the first analyst on a two‑sided delivery platform that handles both food and parcel order...

Analytics & ExperimentationExperiment Design (A/B Testing)Causal Inference

Evaluate K-Fold Cross-Validation for Model Selection

Evaluate K-Fold Cross-Validation for Model Selection Model Selection and Validation for a New Feature Launch You are selecting and validating predicti...

Calculate cost from orders with SQL

You have two tables: orders(order_id INT, user_id INT, order_date DATE, quantity INT, unit_price DECIMAL, coupon_code VARCHAR) and coupons(code VARCHA...

Data Manipulation (SQL/Python)

Historical FX-Rate Service – System Design

System Design: Historical FX-Rate Service Design an internal service for engineers and analysts to fetch historical currency exchange rates for analyt...

Product / Decision MakingTechnical Tradeoffs for PMsStorage & Sharding

Software Engineer Locked

Build a React team builder with role constraints

This question evaluates frontend React skills including component state management, enforcing role-based constraints and invariants, handling user int...

Coding & AlgorithmsReact & UI FrameworksState Management

Machine Learning Engineer

Design a Real-Time Feature Store

Design a real-time feature store for machine learning systems used in ads or recommendation ranking. Your design should support both: - Online inferen...

Late but Critical Colleague

Behavioral Scenario: Late but Critical Colleague You run a recurring bi-weekly cross-functional planning or metrics review meeting. A teammate who own...

Behavioral & Leadership

90 people solved

Jul 4, 2025

Tech Interview Questions

Solve parsing, counting, ranges, and window problems

Count buggy vs non-buggy by employer

Analyze Distribution of Daily Page Shares Per User

Handle diverse styles and give constructive feedback

Lead structured response to accuracy incident

Answer common behavioral questions

Resolve Two Knights-and-Knaves Statements

Determine Discount's Effect on Conversion Rate with A/B Testing

Demonstrate Bias for Action

Evaluate Integrity in Workplace Culture Through HR Screening

Generate combinations and permutations

Cover intro, projects, interest, goals, Go rating

Design A/B Test for New Recommendation Algorithm Launch

Diagnose and experiment to reduce late deliveries

Evaluate K-Fold Cross-Validation for Model Selection

Calculate cost from orders with SQL

Historical FX-Rate Service – System Design

Build a React team builder with role constraints

Design a Real-Time Feature Store

Late but Critical Colleague

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ML System Design

System Design Interview