Xai Software Engineer Interview Questions

xai hr screen interview overview for software engineer position

一开始投的是spacex的职位，recruiter从washington dc打来的，说是以前的xai。 recruiter问题： 问了下过去的project，她一点听不懂就抓了几个keywords。 问了下backend的tech stack是啥。 问是不是comfortable day1申请security clearance，这个职位需要uscitizen，要给政府系统搞ai。 需要出差从加州去dc。 然后就是简历要发给组里的eng 去看看，上午电话完，下午就说move forward选时间面试。

xai tech lead interview: 15-minute chat turns into 35 minutes

约了15分钟，聊着聊着就变成35分钟了 让我介绍下recent projects in the past 2 years 5 min.  有没有用过Kerberos，有没有用过go和rust。 Ask if i am comfortable about clearance 我问是啥，他说会调查过去10年的经历，然后约你在图书馆闲聊看看你是不是会对政府有害。 哥们介绍了下这个职位干嘛，一会儿说我不信政府，我不信那个，我都听得一愣一愣。哥们说这里很扁平化，四层以上就是elon must。 问为啥对spacex，我蒙了根本没准备总不能说我就想投一下练手吧，就说对这个职位感兴趣，跟recruitor 聊了才知道是xai被并到了spacex。spacex 说实话我只知道火箭。这哥们滔滔不绝说了一堆spacex有starlink，有电，很有passion。然后我一看哥们比我还小很多，居然说想退休了。 我反问哥们问题 问他最开心的工作哪一部分，他说有很多资源和算力，可以做想做的事情。 你打算在spacex呆多久，他说这个职位他只想呆一年，把大家培养成expertise之后就想回去做科研，设计比...

Xai Full Interview Experience for Software Development Engineer Position

This post was last edited by Anonymous on 2025-10-02 12:50 This company places great emphasis on coding. Coding 1: A slight variation of LRU, where each item carries a quantity, so when calculating th

Distributed Matrix Multiplication with Data Parallel and FSDP Simulation

## Problem: Implement Two Distributed Matrix Multiplication Strategies (DP and FSDP) Using a Communication Simulator You need to implement distributed matrix multiplication **C = A @ B** in a simulat

Design a Restorable (Checkpointable) Iterator

## Problem: Design a Restorable (Checkpointable) Iterator Design an iterator wrapper `RestorableIterator` that wraps an existing iterator (or an array/list). In addition to normal iteration via `next

Token Limiter

## Token Limiter (Rate limiting / quota) Implement a **Token Limiter** component that limits token (quota) consumption for a subject (e.g., userId / apiKey / tenant) under a given rule set. > Note:

Unflatten: Refill a Nested Template Structure with Values from a Flat List

## Problem: Unflatten a Nested Template Structure Given a flat list of integers and a nested template structure, refill the template’s leaf integer positions in order to produce a new object with the

Flatten a Nested Python Structure (lists/dicts/tuples) into a List of Integers

## Problem: Flatten a Nested Structure When working with hierarchical data, you may need to convert a nested structure into a flat list. ### Input Given a nested Python-like data structure `structur

Research and Machine Learning Coding

Conduct research and machine learning coding

4-hour Take Home Project Task

On the Codesignal platform, there are 7 prompts including frontend, backend, and machine learning among others. Choose based on your expertise. Complete the code task as per the prompt and ensure your

Kth element

Find the kth largest element in a data stream. Implement stream processing to handle the kth largest element in each time window of a large data stream. Use a queue to manage the time window and bucke

Handwrite parallelized sort

Handwrite a parallelized sort algorithm. ### Sample Input ``` 32 12 45 78 23 56 2 98 65 ``` ### Sample Output ``` 2 12 23 32 45 56 65 78 98 ``` ### Test Cases **Case 1** Input: ``` 32 12 45 78 23

Rate Limiter Design

Design a rate limiter to control request flow. Limit the frequency of requests within a given time window. ### Sample Input ``` max_requests=10\ntime_window=60 ``` ### Sample Output ``` true\ntrue\n

KV Store Design

Design a key-value store system. It should support basic add, delete, and find operations while considering performance. ### Sample Input ``` add key1 value1\nfind key1\ndelete key1\nfind key1\n ```

Multithread Sorting

Given an integer array, sort it. You are required to use multithreading to complete the sorting. ### Sample Input ``` 8 4 10 3 6 9 ``` ### Sample Output ``` 3 4 6 8 9 10 ``` ### Test Cases **Case