Providing the right interview questions can make it easy for you to hire the best backend developer for your team. With these back end engineer interview questions, you can also assess their skills and knowledge in web application development. You can use the data to determine if you should hire certain candidates.
It’s important for you to choose the backend developer interview questions well. This guide will provide you with the top interview questions, so you can make the right decision to hire the best backend developers for your company.
Top Backend Developer Interview Questions You Can Ask
There are plenty of backend engineer interview questions you can ask your candidates. It’s important for you to ask the questions that can help show their skills and knowledge in web and application development, so you can discover their value for the company. Here are the backend technical interview questions you can ask your potential backend engineers:
- Can you explain about SQL injection? SQL injection is a method used by hackers to inject malicious codes into an SQL data snippet. This injection procedure will allow the web application to process the SQL codes in ways that will benefit the hackers.
- How to handle the risks of SQL injection? To handle the risks of SQL injection, there are various methods you can use. First, you need to create a separation between user input and the program instructions. Second, you can use the input validation to blacklist and whitelist various inputs from the users. Third, you can also apply prepared statements for the codes, use stored procedures for the codes, and also use the principle of least privilege.
- Can you tell us the advantages of web services? Web services have various advantages, which include the ease of integration, running multiple service versions, accessibility via any web browser, multiple client usage, and more.
- What are the best ways to do performance testing? There are various ways you can follow to do successful performance testing, which include identifying the testing environment and performance metrics, designing and planning the performance tests, configuring the testing environments, implementing and executing your performance tests, and analyzing the test results.
- Can you tell us about the disadvantages of REST web services? REST web services have some disadvantages, which include the impossibility of maintaining sessions, the impossibility of making asynchronous calls, and no defined contract between the service and the client.
- Can You Explain a Distributed Transaction? Distributed Transaction refers to the exchange of database information via two or more hosts. There will be the hosts that provide the transaction resources to be distributed to various databases in this process.
- Can you tell us the reasons for application layering? In application development, using the layered architecture in applications can help make it easier for you to work on the codes for the application. You just need to work on the application coding layer by layer to achieve your programming goals. It helps to simplify the development workflow.
- What is REST? REST is the web architecture that uses the HTTP protocol for its data communications. It stands for Representational State Transfer. In REST, the server will act as the resources of data, and then the client will use the HTTP protocol to access the data from the REST server.
- What are NoSQL databases? NoSQL databases are non-tabular databases that use different ways of storing data when compared to regular SQL databases. It can accommodate various types of databases, including key-value, graph, column-oriented, and document-oriented.
- Can you explain about Continuous Integration? Continuous Integration is the development process that requires the programmers to perform continuous integration of their codes in the shared repositories multiple times per day. Each new integration will get verified and validated to ensure that it doesn’t cause any problems or conflicts. This type of development process makes it easy for developers to detect problems as early as possible.
Conclusion
Use these backend developer interview questions to assess the value of your candidates and determine the rates for them when you decide to hire them. The more knowledgeable your candidates are, the bigger their value will be for your company. You should follow up the interview session with the next back end developer hiring test to filter your candidates and choose the best candidates to work with your company.
