Senior+ Software Engineer Interview Questions
Senior+ software engineer loops (E5/L5 and above) shift the center of gravity away from raw coding and toward system design and leadership. These questions were reported by candidates interviewing for senior+ SWE roles across top tech companies, so they reflect the real senior+ bar: open-ended design rounds where you're expected to drive the architecture and defend trade-offs, behavioral rounds that probe scope, ambiguity, and leading without authority, and a coding bar that stays high but matters less than how you reason about scale. There are 150+ real, recently reported senior+ SWE questions here, spanning coding, system design, and behavioral rounds. Most come with a detailed model answer, so you can see not just whether a senior+ response is correct but whether it operates at the right altitude.
"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."
Reason About Endianness, Ring Buffers, and Stack Behavior in Firmware
Reason About Endianness, Ring Buffers, and Stack Behavior in Firmware You are reviewing low-level firmware that receives binary records, buffers them ...
Design a News Aggregation Feed
Design a large-scale news aggregation feed similar to a major news app. The system ingests a large volume of raw news articles from many sources, incl...
Design review system with voting and rewards
Design a Scalable Product Review System with Voting and Rewards You are designing a reviews feature for a large e-commerce marketplace. Customers can ...
Turn an Unlikely Project Around and Recover When AI Coding Falls Short
Turn an Unlikely Project Around and Recover When AI Coding Falls Short Prepare two senior-level examples. First, describe a project that initially app...
Solve Two OA Coding Problems
The online assessment included two coding problems: 1. In-place character run compression - You are given an array of characters. - Compress con...
Design an Airbnb wallet with holds and payouts
Design and Implement an Airbnb-Style Wallet (Ledger, Holds, FX, Idempotency) Problem Design and implement an Airbnb-style wallet system. This is an OO...
Design a Real-Time Auction Platform
Design a real-time online auction platform. Users can browse an auction, submit bids, and see the current highest bid and bid history update live. Tra...
Traverse a Matrix in Spiral Order
Traverse a Matrix in Spiral Order Problem Given an m x n matrix, return all elements in clockwise spiral order. Begin at the top-left corner, move rig...
Track the Median of a Stream
Track the Median of a Stream Design a data structure that accepts integers one at a time and returns the median of all values seen so far. The capture...
Design restaurant shift scheduling
This question evaluates skills in data modeling, backend system architecture, API design, scalability engineering, and consistency management for a mu...
Lead a High-Leverage Project in a Regulated Legacy System
Lead a High-Leverage Project in a Regulated Legacy System Prepare a senior-level project deep dive. The project should have meaningful business impact...
Implement Last-Click Attribution APIs
This question evaluates a candidate's ability to implement stateful, time-windowed event matching and attribution, testing skills in data structures, ...
Design a Ride Scheduler
This question evaluates object-oriented design, event-driven scheduling and simulation, state management for ordered task execution, API design, and h...
Solve Tree Columns And Maze Variants
This question evaluates tree traversal and column-based grouping skills along with grid-based graph search, state modeling, and handling dynamic maze ...
Introduce yourself for a senior role
Prompt You’re interviewing for a senior engineering role. 1. Give a concise self-introduction (2–3 minutes). 2. Highlight 1–2 impactful projects, your...
Calculate Bowling Game Score
This question evaluates a candidate's ability to implement rule-based scoring logic, array processing, and stateful iteration to correctly aggregate f...
Implement Store Autocomplete
This question evaluates string matching, prefix search, and data structure selection skills by requiring an autocomplete method that returns entries b...
Implement Event Filtering and Queue Routing
This question evaluates parsing and evaluation of domain-specific filter expressions, JSON traversal and type-aware comparisons, boolean logic handlin...
Design bookstore and chat messaging systems
This question evaluates a candidate's competency in large-scale system design, including distributed systems architecture, data modeling, consistency ...
How do you manage performance and disagreements?
Manager behavioral prompts Answer the following as a people manager (or manager-level tech lead). Use real examples where possible. 1. Scope and owner...