Onebyzero

Role: Software Engineer

College: Not Specified

Interview Date: October 10, 2025

Interview Type: Full-Time

Result: Rejected

Difficulty: Challenging

Rounds: 2 rounds

Topics Asked: High-Level Design, Data Structures, Algorithms

Experience:

This interview experience for a Software Engineer role at OnebyZero.ai focused on High-Level Design (HLD) and Data Structures & Algorithms (DSA).

HLD Round: The first round involved a High-Level Design question. The candidate was asked to design a social media page similar to a Facebook page, including functionalities for users to create pages and followers to comment on posts. As it was the candidate's first HLD interview, they felt inadequately prepared and their proposed solution did not meet the interviewer's expectations, despite attempting it after being offered to skip.

DSA Round: Following the HLD round, a Data Structures & Algorithms question was posed: find the largest substring with non-repeating characters. The interviewer stressed the importance of passing all test cases, and the candidate successfully implemented the solution in one attempt.

The overall outcome was a rejection, primarily attributed to the candidate's performance in the HLD section.