Interview Questions for a Software Engineer

Here we are providing you few questions that are asked in Software Engineer Interview to help you plan to be considered for this technical position.

Interview Questions for a Software Engineer

Software Engineering is the implementation of a systematic, structured and quantifiable approach for software product creation, service, and maintenance. When designing a software product, it requires applying a systematic and well – defined approach.

These Software Engineering Interview Questions have been specially designed to familiarize you with the essence of the software engineering issues that you may experience for your interview. In your interview, good interviewees hardly decided to ask any specific question, generally questions start with some basic concept of the topic and later they continue on the basis of further discussion and what you should answer:

  1. Which are the Software categories?
  • System software
  • Application software
  • Embedded software
  • Web Applications
  • Artificial Intelligence software
  • Scientific software.


  1. Which programming languages were you using in the past? Which programming language you are familiar with?

Candidate should feel free to tell their preferred programming language, the one you are comfortable with or the one you want to work in.

For example, I have Java, C++, C, JAVA and ANDROID skills. I have a passing SQL and Database knowledge. My two best languages for programming are Java, and C++.


  1. What's the main difference between Computer Software and Computer Program?

A computer program is a set of code for the programming. It does a function well defined. The software, on the other hand, contains programming code, documentation, and user manual.


  1. How can you ensure your code is not only safe but also quick?

Technology protection is always key in the applications. So if the program execution is slow then I will try to identify the explanation for the difficulty of its time.


  1. What is the purpose of Debugging in Software Development Process?

Debugging is the mechanism that leads to error elimination. It's very essential for successful testing.


  1. What is difference between Validation and Verification?


Validation refers to the collection of activities that ensure the program was designed according to customer needs.


Verification is a term that describes to the collection of activities that ensure a particular task is performed by the program.


  1. What is Encapsulation?

Encapsulation is described as the wrapping up of data within a single unit. It is the structure that ties code and the data it manipulates together.


  1. What is Abstraction?

Data Abstraction is the feature that shows only the essential details to the user. The trivial or non – essential units are not shown to the user.


  1. What is Inheritence?

Inheritance is a process wherein one class acquires another class property. Through inheritance we are able to reuse the existing class fields and methods.


  1. What is Polymorphism?

Polymorphism is an object's capacity to take several types. The most common use of polymorphism in OOP occurs when a reference parent class is used to refer to an entity of a child class.


  1. Name steps of SDLC Process?

The steps involved in Software Development Life Cycle are,

  • Feasibility Study.
  • Required Analysis and Specification.
  • Design.
  • Coding.
  • Testing.
  • Maintenance.


  1. Name some SDLC models?

Some of the SDLC models are.

  • Waterfall Model
  • Spiral Model
  • V – shaped Model
  • Iterative Model


  1. What is Software Re – engineering?

Re – engineering is a software development process that is done to increase a software system's maintainability.


  1. What is Computer Software?

Computer software, is a set of instructions for data or computer that tells the device how to operate. This is contrary to the physical hardware from which the system is built, and the work is actually carried out.


  1. What is the role of Software Developer?

Software developer’s role is to identify, design, install, and test a software system that they've built from the ground up for a company. It can range from developing internal programs that can support businesses to make products that can be sold on the open market more effective.


  1. How is C different from JAVA and C++?

C is not object oriented programming language, it is structure oriented programming language, whereas JAVA and C++ are object oriented programming languages.


  1. Describe the difference between Process and Thread?

A process is the computer program case. You can have one or more threads in a single program.


  1. What is Exception Handling?

Error handling is the exception response method when a computer program is running. An exception occurs when a specific procedure involves the unexpected event.


  1. Give the difference between Interface – Oriented, Object – Oriented and Aspect – Oriented programming.
  • Interface – Oriented programming is contract based.
  • Object – Oriented is a way to write granular objects which have a single purpose.
  • Aspect – Oriented Programming is to segregate the code in such a manner that various objects carry the main tasks, and the subsidiary tasks are carried by independent objects.


  1. Why using catch (exception) is always a bad idea?

It is a bad idea because:

  • As there is no variable defined, it is not possible to read the exception.
  • It’s good to use an exception when you have known exception types.


  1. What do you mean by HTTP?

The Hypertext Transfer Protocol (HTTP) is a platform for distributed, shared, hypermedia information system applications. HTTP is the source of data communication for the World Wide Web, where hypertext documents contain hyperlinks to other services that can be easily accessed by the user. In the client – server programming model, HTTP acts as a request – response protocol.


  1. Define Structural Design?

This is a process or instrument by which we assess the safe and economical requirements of a structure or a structural component necessary to carry the load. In other terms, determining the cross – sectional length, material quality, quantity of reinforcement etc. required to withstand the internal forces we have from structural analysis.


  1. What is Data Flow Diagram?

Data Flow Diagrams are used to illustrate data flow within a business information system in a graphical way. DFD describes the processes involved in a system for transferring data from input to file storage, and generating reports.


  1. What is the main role of Software Engineer?
  • Develops information systems through the design, development, and implementation of software solutions.
  • Defines the operational feasibility through the assessment of research, problem description, requirements, solution creation and solutions proposed.
  • Prevents activities by preserving confidential information.
  • Enhances processes by performing an audit of procedures and proposing policy and operational improvements.


  1. What are Software Requirements?

Software requirements are a practical explanation of a software system proposed for use. The target device specification, its functionalities, and features are believed to be.


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