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."
Design Search And Web Crawling Systems
This question evaluates system-design and distributed-systems competencies including large-scale indexing and query-serving, relevance ranking and per...
Debug React Sorting, Persistence, Routing, and Accessibility
Prepare for a HackerRank software engineering interview question about debug react sorting, persistence, routing, and accessibility. The prompt highli...
Design a global real-time notification system
This question evaluates competency in designing large-scale distributed systems for global real-time notifications, covering scalability, multi-region...
Design multi-tenant ingestion and processing platform
This question evaluates a candidate's ability to architect scalable, multi-tenant data ingestion and processing platforms, assessing competencies in t...
Maximize Profit From Cutting Rods
This question evaluates algorithmic optimization and discrete cost-benefit analysis, testing skills in integer parameter exploration, profit modeling,...
Design an Online Minesweeper Platform
This question evaluates competency in designing scalable, low-latency, real-time stateful systems, covering data modeling, API design, persistence, co...
Explain your most impactful project clearly
Technical Communication / Behavioral Describe the project you worked on that had the largest measurable impact. The interviewer asks you to: 1. Whiteb...
Design an exception monitoring system with top‑K
This question evaluates the ability to design a scalable, low-latency exception monitoring system focusing on streaming ingestion, event grouping/fing...
Answer cross-team delivery and values questions
You are in a behavioral/values interview. Prepare structured answers (use STAR or similar) for prompts like: 1) Cross-team delivery issue - Describe a...
Scale Digit-Square Convergence Requests
Design a service that receives very high request volume for the digit-square convergence operation. For each request, the input is a positive integer ...
Design Disk-Based Inventory Serving
Design software for a machine that has no SSD storage and only a small amount of RAM. The machine must service inventory requests using spinning disks...
Set up a Python interview environment
You can use AI coding tools. Prepare a clean laptop for a Python-based onsite and explain your steps: ( 1) Install pyenv and set up a project-specific...
Implement web data fetch and storage tool
Problem You are asked to implement a small program that retrieves data from a remote web service protected by token-based authentication, parses the r...
Implement Cache, Undo, and DFS
This question evaluates implementation skills in data structures, algorithmic complexity, and state-management patterns by combining a timed in-memory...
Implement a hierarchical key-value store
Implement a hierarchical key-value store Implement an in-memory hierarchical key-value store where keys are UNIX-like paths joined by '/'. The root no...
Solve Matrix, Tree, Nested, LCA, Maze Tasks
Answer the following independent coding tasks. For each task, implement a clean API, handle edge cases, and analyze time and space complexity. 1. Trav...
Can You Reach the Last Index?
This question evaluates a candidate's understanding of array traversal and reachability in sequences of jumps, along with the ability to reason about ...
Handle a payment-service incident with resource spikes
Handle a payment-service incident with resource spikes Incident Response and Resilience: Payment Integration Service Outage Context You own an interna...
Demonstrate leadership and team development
Demonstrate leadership and team development Behavioral & Leadership: End-to-End Project Leadership (L5-level) Context: This is a behavioral prompt oft...
Solve Three Coding Interview Problems
The interview included three coding tasks: 1. Common ancestor in an N-ary tree You are given the root of an N-ary tree and two target nodes. Dete...