Any questions you want to practice should be geared towards your reliability, teamwork, and ability to follow instructions. Various IT companies and website developer institutions should also be looking for motivation and enthusiasm for the specific position. You need to know some of the most common questions asked in interviews.

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Try practicing some of these common Back-end Developer’s job interview questions:


1.    Can you provide some reasons why you would utilize microservices architecture?


How to answer:  This technical question assumes that you are familiar with Microservices Architecture. When preparing for an interview, you should research the organization to determine its technologies and programming methodologies. Knowing this will help you prepare for questions like these. If you’re not familiar with the topic the interviewer is asking you about, it is okay to admit this, as long as you state how you would go about acquiring the knowledge or the skills needed.


Answer:  “There are several reasons you would employ a microservices architecture when developing software. The first is that microservices are flexible and easily adapt to multiple frameworks and technologies. Another reason is that when one process fails within a microservices environment, the others are not affected. Microservices are also applicable across all sizes of organizations and they can be deployed quickly when needed.”


2.    Can you discuss the ACID property of a relational database system?


How to answer:   As a back-end developer, the websites you create will interact with other hardware and software systems. One of the systems many websites exchange data with is a relational database. Even though it is not your responsibility to manage the databases, you should have a good working knowledge of them so your code can exchange data between your website and the database. The interviewer will expect you to at least be familiar with this and be able to discuss it.


Answer:  “The properties of a relational database are often described using the acronym ACID. This stands for:
Atomicity – A property that guarantees that if any part of a transaction fails, the entire transaction will fail. This prevents database errors.
Consistency – This ensures that every transaction moves the database from one state to another valid one.
Isolation – This addresses the concurrent execution of transactions resulting in the system state that serial transactions create.
Durable – This ensures that executed transactions are maintained, even if the power is lost.”


3.    Which do you prefer, acceptance testing or functional testing?


How to answer:  When asked a question about which process you prefer, it is best to answer by picking the one you use and then describing why you prefer it. Your rationale should discuss the benefits of the process, the technology it employs, and the operational advantages realized from using it. If you have done your research, you also can choose the process currently used by the employer to confirm that you will fit into their operations seamlessly.


Answer:   “When given the option, I prefer functional testing to verify my code. This is because a functional test confirms that the product we developed works and performs the tasks we redesigned it for. The alternative is acceptance testing. This validates that we developed the product that the end-user requested and needs. It typically addresses whether the software solves the problem for the end-user. When using functional testing, it is important to clearly understand the end-users issue and the type of software they need to address it. Doing this enables the functional test to simultaneously perform the acceptance test.”


Not every question you will encounter when interviewing for Back-end Developer’s position will be related to a secure information supportive job. But those are the common topics interviewer can ask for selecting a qualified candidate.


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Composed by: Suma Sarker