Backend developers play a crucial role in managing the server-side of websites and applications. Their responsibilities range from designing code libraries and databases to server maintenance and security. Given the versatility that the role demands, backend development is amongst the highest-paying software engineering roles.
While it is true that there is heightened demand for backend developers in the tech world, answering tough and tricky backend developer interview questions at FAANG+ companies is no mean feat. The stiff competition makes it difficult even for engineers with tons of experience to make the cut.
This article will give you an idea about the backend developer interview process at FAANG+ companies. We’ll also look at some sample backend developer interview questions on coding and systems design.
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If you’re wondering how to prepare for the backend interview, this article is for you! Let’s go ahead and look at the backend developer interview process at FAANG+ companies. We’ll also cover some sample backend developer interview questions to give you an idea of what to expect at technical interviews.
Here’s what we’ll cover in this article:
The Backend developer interview process at top companies fundamentally tests your coding and design skills. The process typically has three main rounds:
In this round, you’re contacted by a recruiter from human resources. You’re asked basic questions about your professional experience, the reason for wanting to shift jobs, and your general backend skill-set. The idea of this round is to understand whether your professional profile meets the requirements of the role.
Check out the 7 Backend Developer Skills you must have to crack tech interviews.
This is a remote interview round where you’re asked 1-2 coding problems in core data structures and algorithms. You’ll be asked to brute-force the problem solution and write error-free code. The hiring manager in this round closely observes your approach to problem-solving. The Technical Phone Screen typically lasts 30 minutes. You can also expect one or two theoretical questions on backend development.
Below are the important topics to prepare for the Technical Phone Screen round.
Let’s look at some sample backend developer interview questions that are asked at the Technical Phone Screen round.
Learn How to Become a Backend Developer? Check the roadmap here.
Hiring managers in the On-site interview essentially evaluate your coding and design skills over 3-4 rounds. On-site interviews at FAANG+ companies typically have one coding round, one or two systems design rounds, and one behavioral round. Your performance in each of these rounds is evaluated before a hiring decision is made. Note that interviews for senior developer positions typically involve additional systems design and behavioral rounds.
Backend developer interview questions on the On-site rounds are around coding, systems design, and behavioral psychology. Let’s look at some sample backend interview questions asked in each of these rounds.
Coding is an important part of backend developer interviews. Backend developer interview questions on coding are typically around algorithms and core data structures.
Here are some sample backend interview questions on coding.
To check out more backend developer interview questions on coding, check out our Problems Page.
Thorough knowledge of distributed systems is essential to execute your responsibilities as a backend developer. The On-site design round involves answering backend developer interview questions on systems design by articulating your thought process.
Let’s look at some backend interview questions on systems design to help you prepare for your interview.
Before that, here are the important topics to prepare for the interview:
Below are some sample backend developer interview questions on systems design.
These Backend developer interview questions will give you an idea about what to expect at your backend interview.
This section will tell you exactly how to prepare for the backend interview. Let’s go ahead look at some excellent tips to help you answer tough backend developer interview questions and nail your next backend interview.
Incorporating these above tips will help you answer backend developer interview questions to the best of your ability and land that dream offer in the process!
Q1. How many backend developer interview questions on coding are asked in technical interviews?
At technical interviews, you're generally asked a total of 2-4 backend developer interview questions on coding. You can expect 1-2 coding problems in the Technical Phone Screen interview and 1-2 coding problems in the On-site coding round.
Q2. What are the important coding concepts for backend developer interviews at FAANG+ companies?
The important concepts to prepare in order to effectively answer backend developer interview questions on coding include - linked lists, strings, arrays, sorting algorithms, recursion, hash tables, graphs, greedy algorithms, trees, and dynamic programming.
Q3. How long should you spend preparing for systems design interviews?
To cover all the important topics in systems design, you should ideally spend at least two weeks preparing for the systems design interview.
Q4. What is the acceptance rate for backend developers at FAANG companies?
FAANG companies have very low acceptance rates for software engineers. The average acceptance rate for backend developers is less than 2%.
Q5. Are behavioral interview questions asked at backend interviews?
Yes, behavioral interview questions are an important part of the Backend interview process. They’re asked during the behavioral round of on-site interviews at FAANG+ companies.
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