Software Engineer Interview Questions
Practice 4,429 real software engineer interview questions for 2026. Covers top employers like Google, Amazon, OpenAI, and Uber — real questions from actual onsites with detailed solutions — and is built for focused interview preparation. This collection emphasizes coding and algorithms first, then system design, performance, and role-specific domains so you can train the exact skills interviewers test. What’s distinctive: coding rounds still dominate at every company, Google often emphasizes algorithms and distributed-systems thinking, Amazon commonly probes scalable-services design and operational tradeoffs, OpenAI leans toward ML systems, model deployment and inference-scaling problems, and Uber typically asks real-time routing, geospatial and consistency challenges. Expect live coding, pair-programming, and whiteboard/system-design sketches. To prepare efficiently, drill medium-to-hard algorithm problems with time limits, practice end-to-end system design sketches focused on capacity and reliability, and rehearse concise behavioral stories that show ownership and impact.
"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"
"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"
"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."
"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."
"Got a Google recruiter call on Monday, interview on Friday. Crammed PracHub for 4 days. Passed every round. This platform is a miracle worker."
"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."
"The solution quality is insane. It covers approach, edge cases, time complexity, follow-ups. Nothing else comes close."
"Legit the only resource you need. TC went from 180k -> 350k. Just memorize the top 50 for your target company and you're golden."
"PracHub Premium for one month cost me the price of two coffees a week. It landed me a $280K+ starting offer."
"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."
"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."
"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."
"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."
"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."
"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."
Compute delivery metrics and top-K queries
Compute delivery metrics and top-K queries You have restaurant menus and orders for a food delivery platform. Part 1: Given a user location and a set ...
Design an online bookstore for browse and purchase
Design an online bookstore for browse and purchase System Design: Online Bookstore (Browse + Purchase) Context Design an online bookstore that allows ...
Solve BFS grid delivery routing
You are given an m×n grid representing a city: 'S' are DashMart stores, 'H' are homes, '.' are roads, and '#' are obstacles. Movement is allowed in fo...
Find nearest common manager for multiple employees
Given an organizational hierarchy modeled as a rooted tree, build the tree from (employee, manager) pairs and implement a function that, for k ≥ 2 emp...
Solve transaction aggregation and search tasks
Solve transaction aggregation and search tasks Complete the following coding tasks: (a) Given a list of transactions, each with userId and amount (cre...
Describe Angular features
Describe Angular features What are the key features of Angular? Discuss modules, components, templates, dependency injection, change detection, RxJS o...
Design leaderboard and messenger systems
Design leaderboard and messenger systems This Meta onsite system-design round asks you to design two large-scale systems back to back. Cover end-to-en...
Design the manual review workflow
Design the manual review workflow System Design: Human-in-the-Loop Review Subsystem Context You are designing a human-in-the-loop (HITL) review subsys...
Compute fruit spoilage time in a grid
Given an m×n grid representing kitchen cells: 0 for empty, 1 for fresh fruit, and 2 for spoiled fruit. Each minute, any fresh fruit adjacent (up, down...
Assess Spring IoC, AOP, JDBC, Security
Assess Spring IoC, AOP, JDBC, Security Spring Framework — Multi-part Questions Context: You are building/maintaining a Spring-based service for a take...
Maximize Letters from Disjoint Words
You are given an array words of lowercase English strings. Choose a subset of words such that: - each chosen word contains no repeated letter within i...
Check feasibility of AI course schedule
You are designing a learning path for n AI-related courses, labeled from 0 to n - 1. Some courses have prerequisites. For example, to take course b, y...
Solve classic coding interview problems
Solve the following algorithmic problems: 1. Egg testing with limited resources: You are given k identical eggs and a building with n floors. An egg b...
Implement in-memory DB querying
Question Implement an in-memory database that supports: 1. Querying the whole table and returning only selected columns (projection). 2. Adding WHERE ...
Reconstruct tree from inorder and postorder
Given two arrays representing the inorder and postorder traversals of a binary tree with unique values, reconstruct the original binary tree and retur...
Find Largest Adjacent Sorted Difference
Given an unsorted array of integers nums, compute the largest difference between two consecutive elements after the array is sorted in ascending order...
Implement an LRU Cache
Design and implement a fixed-capacity key-value cache that evicts the least recently used item when it becomes full. Support the following operations:...
Implement anagram check and odd-even linked list
You are given two independent coding tasks. Task 1: Check if two strings are anagrams Implement a function that determines whether two given strings a...
Count clusters covered by dashers
Count clusters covered by dashers You are given two m×n binary matrices of equal size: D for dasher availability and U for user presence. A cell value...
Determine if robot path is bounded
Determine if robot path is bounded A robot starts at (0, 0) facing North on an infinite grid. It executes a string s consisting of 'G' (move forward 1...