Twilio

Principal Software Engineer Interview Experience - San Francisco, California

November 1, 2021

Positive ExperienceNo Response

Process

Interview Process:

Initial recruiter intro call
Hiring manager interview
Coding / Pairing initial technical interview
Final interview panel including Coding/Pairing interview, Behavioral interview, and System Design interview
Offer

Pre-interview prep material was excellent and accurate. Recruiters were helpful and prompt. Interviewers were friendly and positive.

Questions

Technical assessments focused on practical pair-programming exercises and system design.

I found this to be a refreshing departure from the typical LeetCode-style algorithm exercises.

Interview Statistics

The following metrics were computed from 2 interview experiences for the Twilio Principal Software Engineer role in San Francisco, California.

Success Rate

50%

Pass Rate

Twilio's interview process for their Principal Software Engineer roles in San Francisco, California is fairly selective, failing a large portion of engineers who go through it.

Experience Rating

Positive50%

Neutral0%

Negative50%

Candidates reported having mixed feelings for Twilio's Principal Software Engineer interview process in San Francisco, California.

Twilio Interview Questions

Maximize Greatness of an Array

Medium

Given an array of numbers, rearrange it to maximize the number of indices where array[i] < rearranged_array[i]. Essentially, you want to maximize how many numbers in the array can be replaced by a strictly larger number from within the same array.

ArraysTwo PointersGreedy Algorithms

Univalued Binary Tree

Easy

Determine if a binary tree is univalued, meaning every node has the same value. You need to check if all nodes in the tree contain the same value.

TreesRecursion

Reformat Date

Easy

You're given a date string in a specific format (e.g., "20th Oct 2052") and need to convert it to a standardized format (YYYY-MM-DD).

Strings