15 Software Developer Interview Questions and Answers

Learn what skills and qualities interviewers are looking for from a software developer, what questions you can expect, and how you should go about answering them.

From mobile apps to operating systems, software is the lifeblood of our digitally driven world. And it takes creative and analytical software developers to think up new ideas, create frameworks, and perfect the functionality of the mobile and desktop applications businesses and consumers rely on each day.

Gaining the credentials needed to become a software developer is only half the battle when you’re applying to a job. You also need to be able to give cogent and thoughtful answers to a variety of software developer interview questions and build a solid rapport with a hiring manager.

To help you out, we’ve compiled a list of sample software developer interview questions and answers that you can use to develop your own responses so you’re never caught off-guard during an interview.

What coding languages are you proficient in?

This question is a great way to see how much experience you have with coding languages. It’s important for employers to know that you’re familiar with the language they use, so it’s best to mention any coding languages you’ve used in the past and what your proficiency level was.

Example: “I’m proficient in Java, C++ and Python. I started learning Java when I was in college, where I took several classes on programming languages. I learned C++ through my internship at XYZ Corp., where I worked on a project using C++. Python is one of the most popular coding languages right now, so I wanted to learn more about it. I found an online course that taught me the basics of Python.”

Can you walk me through a time when you identified and resolved an issue with a program you were working on?

This question is a great way to show your problem-solving skills and ability to work independently. When answering this question, it can be helpful to describe the steps you took to identify the issue and how you fixed it.

Example: “At my last job, I was working on a program that would help track inventory for our company. One day, I noticed that there were some discrepancies in the data being tracked by the program. After looking into the issue further, I realized that one of the fields I had set up wasn’t calculating correctly. So, I went back into the program and changed the field so that it would calculate properly.”

How do you go about solving problems when they arise with your programs?

This question can help the interviewer understand how you approach challenges and solve them. Your answer should show that you have a method for solving problems, but also highlight your problem-solving skills.

Example: “I first try to find out what caused the issue with my program. I then fix it by making changes to the code or adding new features. If I’m not sure of the cause, I will research the issue until I find an answer. Once I know what caused the problem, I’ll make the necessary adjustments to ensure it doesn’t happen again.”

What methods do you use to communicate with other team members or clients?

This question can help the interviewer understand how you interact with others and your communication skills. Use examples from past experiences to show that you are a team player who is willing to collaborate with others.

Example: “I use several methods of communication, including email, instant messaging and phone calls. I find these three methods to be effective in communicating with my clients or other software developers on my team. For example, when working on a project for a client, I would first send an email outlining what I am doing and asking if they have any questions or concerns. Then, I would check in with them via phone call to discuss their feedback and answer any additional questions they may have. Finally, I would continue to communicate with them via email or instant message as needed.”

Can you give me an example of a project where you had to manage your time effectively in order to meet deadlines?

Time management is an important skill for software developers to have. Employers ask this question to see if you can manage your time well and meet deadlines in the past. Use examples from previous jobs where you had to balance multiple projects at once.

Example: “In my last job, I was working on a project that required me to work with several different teams of people. This meant that I needed to be able to communicate effectively with everyone involved. In order to make sure we all stayed on track, I set up weekly meetings with each team to discuss our progress. This helped us stay organized and ensured that we were making steady progress toward our goals.”

How do you ensure that the data within a software product is kept secure from cyberattacks?

Cybersecurity is a major concern for many businesses, and the interviewer may want to know how you would protect their company’s data from cyberattacks. Use examples of your past experience with cybersecurity and highlight any certifications or training you have that relate to this topic.

Example: “I always ensure that I am using secure coding practices when developing software products. For example, in my last role as a developer, we were tasked with creating an app that tracked inventory levels within our client’s warehouses. We used encryption techniques to keep the data safe from outside attacks, which helped us meet our client’s security requirements.”

What do you believe is the most important aspect of software development?

This question is a great way to assess your priorities as a software developer. It also allows you to show the interviewer that you have an understanding of what it takes to be successful in this role. When answering, consider which aspects of development are most important to you and why.

Example: “I believe communication is the most important aspect of software development. If I’m not communicating with my team members or clients, then I can’t ensure they understand what I’m doing or how long it will take me to complete a project. This could lead to misunderstandings and missed deadlines. By being proactive about communicating throughout the entire process, I can avoid these issues.”

Do you have experience working with large teams or projects?

This question can help the interviewer understand your experience with teamwork and collaboration. Your answer should highlight your ability to work well with others, communicate effectively and manage projects or tasks that require multiple people’s input.

Example: “In my last role as a software developer, I worked on a team of five other developers who were all working on different aspects of the same project. We met daily to discuss our progress and any challenges we faced. This helped us collaborate more efficiently and complete our projects on time. In addition, I also led two smaller teams of three developers each for two separate projects.”

What is your opinion on artificial intelligence and its potential impact on the software development industry?

AI is a hot topic in the software development industry, and employers want to know how you feel about it. They are looking for an answer that shows your knowledge of AI and its potential impact on the industry. You can use this question as an opportunity to show off your expertise by giving examples of what you’ve seen AI do in the past.

Example: “I think artificial intelligence has great potential to change the way we develop software. I have personally used AI to create my own programs before, and I find it very useful. For example, I once had to write a program that would help me predict when customers were going to call customer service. Using AI, I was able to create a program that could predict with 90% accuracy when a customer would call.”

Do you have any questions for me about the role or company?

This is your chance to show the interviewer that you are interested in the job and company. It also gives you an opportunity to learn more about the role, responsibilities and expectations. Before your interview, make a list of questions you have for the interviewer. Try to ask questions that will help you understand what it’s like to work at this company.

Example: “I am very excited about this position because I think my skills and experience would be a great fit for this company. I noticed on your website that you offer free lunch every day. That sounds like a fun perk to work here. I was wondering if you could tell me more about the culture of the office.”

Tell me about a time when you had to deal with a difficult customer or client.

This question can help interviewers learn more about your customer service skills. They want to know that you’re able to work with clients and customers who may be challenging or difficult. Your answer should show that you have the ability to remain calm under pressure, solve problems and communicate effectively with others.

Example: “In my last role as a software developer, I had a client who was very demanding. He would often call me at all hours of the day to ask questions about the project we were working on together. This made it hard for me to focus on other tasks because he would always need something from me. Eventually, I sat down with him to discuss his concerns. I explained how our team worked and what he could expect from us. After this conversation, he became much more understanding and respectful.”

Tell me about an instance where you utilized your creativity to overcome an obstacle.

This question can help the interviewer determine your problem-solving skills and how you apply creativity to your work. Use examples from previous jobs or describe a time when you applied your creativity in a nonprofessional setting.

Example: “At my last job, I was tasked with creating an application that would allow users to create their own website. However, the company didn’t have enough money to hire a designer, so I had to design the entire site myself. I used my creativity to find free resources online that allowed me to create a professional-looking website without having to spend any money.”

Can you provide an example of a time when you had to adapt to changing circumstances?

This question can help the interviewer understand how you adapt to new information and challenges. Use examples from your previous work experience that show you can adjust quickly to changing circumstances.

Example: “In my last role, I was working on a project where we had to make some changes to our coding because of an issue with the database. The company wanted us to use a different type of database than what we were originally using, so I had to change all of my coding to accommodate this. It took me several days to complete the task, but it helped the company save money in the long run.”

Give me an example of a goal that you set for yourself and how you achieved it.

This question is a great way to learn more about the applicant’s work ethic and how they approach goals. It can also help you understand what motivates them, which can be important for an employer who wants their employees to feel invested in their work.

Example: “When I first started my career as a software developer, I set a goal of learning five new coding languages every year. I accomplished this by taking online courses or attending seminars on different programming languages. This helped me expand my knowledge base and improve my skills as a programmer.”

What do you consider to be your strongest skillset and why?

This question is a great way to show the interviewer that you have self-awareness and are able to evaluate your own skills. It also allows you to highlight some of your most relevant experience, which can be helpful if you’re applying for a position in a different industry than your previous job.

Example: “I consider my ability to work well under pressure to be one of my strongest skillsets. I’ve always been someone who thrives when there’s a lot going on, so I enjoy being part of projects where we need to meet tight deadlines or solve complex problems. In my last role, I was working on a project with a team of five other developers, and we were tasked with creating an entirely new platform from scratch. We had to make sure it met all of our client’s needs while also ensuring it would scale as they grew their business. I think this situation helped me develop my time management and prioritization skills.”


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