11 questions · from 3 interviews
Syfe interview questions
Every question candidates reported from their Syfe interviews, most frequently asked first. Each links to the write-up it came from, so you can see the round and how it went.
Syfe coding and DSA questions
- 01
Water Bottles
Given numBottles full water bottles, you can exchange numExchange empty bottles for one full water bottle. How many maximum water bottles can you drink?
- 02
Capacity To Ship Packages Within D Days
Given a weights array and D days, find the least weight capacity of the ship that will result in all packages being shipped within D days, assuming packages are loaded in order and cannot be split.
- 03
Length of Longest Subarray With At Most K Frequency
Given an integer array nums and an integer k, return the length of the longest subarray in nums such that the frequency of each element in this subarray is less than or equal to k.
Syfe system design questions
- 01
Low Level Design of Stock Brokerage System
Design the low‑level architecture of a stock brokerage system. Emphasize allocation and de‑allocation of stocks from client to system and from system to the stock exchange. Provide class diagrams, relationships, a database schema, mention relevant design…
From Syfe | SDE 2 | Backend Engineer | India | Aug 2026 | Reject
- 02
High Level Design of ChatGPT‑like Application
Design the high‑level architecture of an application similar to ChatGPT. Focus on how token limits are enforced per user, handling multiple user profiles, and the authentication flow. Discuss caches, databases, APIs, protocols, and justify choices such as…
From Syfe | SDE 2 | Backend Engineer | India | Aug 2026 | Reject
- 03
High Level Design of Flash Sale E‑commerce System
Design the high‑level architecture for a flash‑sale e‑commerce platform (e.g., Flipkart Big Billion Day). Emphasize handling and sending millions of notifications during the sale, and address scaling, resilience, and other non‑functional requirements.
From Syfe | SDE 2 | Backend Engineer | India | Aug 2026 | Reject
- 04
Multiplayer Ludo Game (LLD)
Design the core components of a turn‑based multiplayer board game system where: - Players move tokens around a path on the board - Game outcomes are influenced by both chance (dice rolls) and player decisions - Multiple games can run concurrently on the…
- 05
News Aggregator (HLD)
Design a high‑level architecture for a news aggregation service similar to Google News, covering data collection, processing, storage, and delivery to end users.
- 06
High‑Scale Notification System
Design a high‑scale notification system where millions of notifications can be sent at fixed intervals, addressing throughput, reliability, and scalability.
- 07
Design a Music Player
Design a music player with the given features: - Enable/ disable shuffle feature - No song should be repeated while shuffling - Get history of songs played - Play/ pause songs - Go to next/ previous song You are required to specify functional and…
- 08
Debugging Microservice Transaction Issue
He shared a basic high level diagram of a micro-service. Suppose there are several users involved in multiple transactions and the system is working succesfully. All services are up, all databases are working fine, but one particular transaction does not…
Syfe interview questions FAQ
What questions are asked in Syfe interviews?
Candidates reported 11 distinct questions across 3 Syfe interviews. 3 coding and DSA questions, 8 system design questions.