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."
Explain deadlines, going beyond, and persuasion
Explain deadlines, going beyond, and persuasion Behavioral Prompt: Delivery Under Pressure, Exceeding Expectations, and Influencing Stakeholders Conte...
Describe your recent project and scope
Describe your recent project and scope Behavioral Prompt: Walk Through Your Most Recent Project Context: Technical screen for a Software Engineer. Pro...
Solve Two OA Algorithm Problems
The post describes two separate coding questions from an online assessment: 1. Greedy deletion by minimum value Given an integer array nums, repeate...
Describe conflict resolution, prioritization, and collaboration
Describe conflict resolution, prioritization, and collaboration Behavioral Prompt: Conflict Resolution and Leadership (Software Engineer, Onsite) Inst...
Validate word abbreviation and reconcile two abbreviations
Validate word abbreviation and reconcile two abbreviations Implement a function isValidAbbreviation(word: string, abbr: string) that returns true if a...
Simulate robot on grid with obstacles
Simulate robot on grid with obstacles A robot starts at (0, 0) on an unbounded integer grid. You are given a sequence of commands consisting of charac...
Design a scalable key-value configuration service
Design a scalable key-value configuration service Design a Globally Distributed Key–Value Configuration Service Background You are asked to design a g...
Explain Kafka architecture and reliability semantics
Explain Kafka architecture and reliability semantics Kafka Architecture and End-to-End Semantics You are asked to explain Kafka's core architecture an...
Discuss team fit and leadership with manager
Discuss team fit and leadership with manager Behavioral Interview Prep: 30‑Minute Hiring Manager Conversation (Software Engineer) Context You are prep...
Discuss conflict, failure, and leadership examples
Discuss conflict, failure, and leadership examples Behavioral & Leadership (Software Engineer Onsite) Prepare four STAR stories that demonstrate your ...
Design and benchmark optimized inference pipelines
Design and benchmark optimized inference pipelines Accelerating PyTorch Inference: TorchDynamo, Techniques, and Benchmark Design Context You are asked...
Design an Event Booking System
Design a high-level event booking system for concerts, movies, or sports events. The system should allow organizers to create events and publish seat ...
Determine Whether Queries Can Zero Array
You are given an integer array nums of length n and a list of range queries queries, where each query is of the form [l, r, val]. For a query [l, r, v...
Implement a Leaky Bucket Rate Limiter
Implement a leaky bucket rate limiter. You are given a class template for a rate limiter that controls whether incoming requests should be accepted or...
Design a no-repeat top-frequency music player
Design and implement a music player that receives song lists from new users and returns songs to play in frequency order without repeating a song in t...
Solve Anagram Without Sorting
Given two strings s and t, return true if t is an anagram of s, and false otherwise. You may not sort either string. An anagram uses exactly the same ...
Explain your tech stack choices
Describe Your Primary Tech Stack, Rationale, and Scale Context: In a software-engineering HR screen, briefly summarize your core technology stack and ...
Handle last-minute track change
Behavioral Question: Switching Tracks Mid-Interview Loop You are midway through a software engineering onsite when the interview focus changes (e.g., ...
Evaluate arithmetic expression with variables
Implement an expression evaluator for a string expr containing non-negative integers, variables (alphabetic names), operators +, -, , /, parentheses '...
Compute task order with prerequisites
Given an integer n representing tasks labeled 0..n-1 and a list of prerequisite pairs (a, b) meaning b must be completed before a, return any valid or...