Sigmoid

Role: SDE-1

College: Not Specified

Interview Date: September 2021

Interview Type: Off-Campus

Result: Selected

Difficulty: Moderate

Rounds: 3 rounds

Topics Asked: Data Structures, Algorithms, Linked List, Arrays, Binary Search Tree, Trees, Projects, Communication Skills, Current Tech Stack

Experience:

The candidate received a referral for an SDE-1 role at Sigmoid Analytics.

Round 1: Coding Round

This round was conducted on Google Meet and lasted about an hour. The interviewer asked two coding questions. The first was from Linked Lists, and the second from Arrays (two-pointers). The focus was on implementing the approach, covering all edge cases, and optimizing the solution. The candidate successfully solved both problems and achieved optimal approaches. The panel provided helpful feedback on flaws and missed edge cases.

Round 2: Problem-Solving/Coding Round

This round was scheduled a few days after the first. It began with an introduction, and the interviewer also had experience in the candidate's tech stack, leading to some related questions. Two questions were asked. The first was on Binary Search Trees, where the candidate provided a working solution and then optimized it to a linear solution with hints from the interviewer. The second question was from Arrays, for which the candidate gave two working solutions. The interviewer shared a Google Doc to write the approach, edge cases, time & space complexity, and code.

Round 3: HR Round

This round was described as more of a "Tell me about yourself" broken into smaller chunks, with no further questions. The interviewer was friendly, and the session lasted about 15 minutes. Communication skills were highlighted as important in this round. Questions like "What values will you be providing to the organization?" were asked.

Overall Experience: The candidate received an offer, noting the swift and smooth communication with the recruiter throughout the process.