Warren

Staff Software Engineer

Design backend system for Whatsapp. Discuss how your architecture would evolve as the system grows

Backend Engineer

The coding question was an easy, stripped down version of LeetCode's Hit Counter, and afterward the interviewer moved into a brief system design discussion built around the solution.

Software Developer

You are given memory blocks of size 1 like balls in bucket write a function that allocate memory i.e. return a block of memory and free memory block i.e. adds that memory block back to bucket. For first part assume we al...

SWE

You need to turn on your camera and microphone, share your screen, and you cannot use an external monitor. In the interview window, the left side shows a real time transcript of both sides speaking, and the right side sh...

SWEIII

serialize and de serialize N ary tree input and output and flexiable and you can define by yourslef

SWEIII

Koko loves to eat bananas. There are n piles of bananas, the ith pile has piles[i] bananas. The guards have gone and will come back in h hours. Koko can decide her bananas per hour eating speed of k. Each hour, she choos...

Java Engineer

Meeting with the team lead. Role was specifically for Senior Java engineer. Q. How would you design a system to retrieve records by timestamp (pull trade records from the database using a specific singular time stamp) Th...

Linux Engineer

Several tasks to assess linux knowledge and familiarity. Warmup consisting of basic tasks like looking at some scripts and determining what would happen and basic command usage. There was a scripting challenge, eg. renam...

Software Engineer

Part 1: Low level design for URLShortener(tiny url) Part 2: Find bugs in AI generated for URLShortener

Strategist, Agent Development

1. Recruiter Screening (30 Minutes) The process kicked off with a straightforward, non technical introductory call. The conversation focused on my background, career goals, and specific interest in Sierra. Key Focus: The...

Staff Software Engineer

In Memory Rate Limiter Design Problem: Design a Rate Limiter for Threat Intelligence Problem Statement: Design and implement a simple in memory RateLimiter class that tracks incoming requests from different IP addresses....

Senior Software Engineer

Design an in memory alert escalation scheduler. An alert should be escalated if it has not been acknowledged by its escalation time. Implement this class: java class AlertEscalationScheduler { void addAlert(String alertI...

Software Engineer

Datadog introduced a new AI coding round in their interview process recently. For anyone preparing and wondering what to expect, I wanted to share some details based on a recent interview experience. The task was to conn...

Software Engineer

Automated llms.txt Generator Objective Develop a tool that automatically generates an llms.txt file for a large variety of websites by analyzing their structure and content. Additionally, implement a mechanism to keep th...

Software Engineer 2

Write an algorithm to extract all possible IPv4 addresses out of string Description There is a faulty logging service that is over redacting the IPv4 addresses by removing all the dots in between. We need to write a pars...

Software Engineer

Sharing my recent Instacart OA experience in case it helps anyone. I was referred for a Senior Backend Engineer role and received the OA around June 10. The email subject was: Instacart invited you to complete Instacart...

Software Engineer

Maximum Order Volume A supermarket will receive calls with known start times, durations, and order volumes. Only one call can be handled at a time, and callers who are not answered will not call back. Determine which cal...

Software Engineer

Given a flat array of objects (representing nodes in a graph), where each node contains: A unique identity (id) A reference to its parent (parent id) A text label (txt) The goal is to reconstruct the hierarchical tree st...

Software Engineer

java / GOAL: implement each Milestone in order and verify correctness via executing your code within the allotted time. Milestone 1: Basic Alert Execution Engine The exercise requires you to develop an alert execution en...

Senior Software Development Engineer

You are given a 0 indexed array maxHeights of n integers, where each element represents the maximum allowed height for a tower at that position. Your task is to build n towers along a coordinate line, where the i th towe...