Prepare for your Mobile Developer interview. Understand the required skills and qualifications, anticipate the questions you may be asked, and study well-prepared answers using our sample responses.
This question can help the interviewer determine if you are a team player and how you might fit into their organization. Your answer should show that you are willing to collaborate with others, but also that you have strong communication skills and can take initiative when needed.
Answer Example: “I’m very comfortable working in a team environment. I have experience working on both large and small teams, and I’m confident in my ability to contribute to the success of any project. In my last position, I was part of a five-person development team that worked together to create an app for a large client. We each had specific tasks to complete, but we also helped each other out when needed. For example, one teammate might need help with debugging while I was working on coding.”
This question can help the interviewer get a better sense of your interests and how you might fit in with their company culture. It’s also an opportunity for you to show off your knowledge of popular apps and their features.
Answer Example: “I have a few favorite apps that I use regularly. My favorite social media app is Instagram because I love taking pictures and editing them with filters. It’s also a great way to stay in touch with friends and family who live far away. Another app I use often is Google Maps. I find it helpful to use when I’m traveling to unfamiliar places so I can plan out my route ahead of time. Finally, I’m a big fan of fitness apps like Fitbit and MyFitnessPal because they help me stay motivated to reach my goals.”
This question can help the interviewer understand how you approach your work and whether your processes align with the company’s. Your answer should include a few steps or tasks that you complete during the development process, such as researching the app market, creating prototypes and testing the app before releasing it.
Answer Example: “My creative process starts with researching the app market and identifying trends or opportunities for new apps. I then create a wireframe or prototype of the app using a coding language like HTML or CSS. After testing the app, I make any necessary changes before releasing it to the public.”
Swift is a programming language developed by Apple for iOS and macOS development. It is considered one of the most popular programming languages for mobile development and is often asked about in interviews. Your answer should show your knowledge of Swift and how you’ve used it in your work.
Answer Example: “I’ve been developing in Swift since it was first released in 2014. I find it to be an easy-to-use language with many features that make it easy to write code. For example, Swift’s Optionals feature allows developers to avoid bugs that occur when dealing with null values. This saves time when debugging code.”
This question can help the interviewer understand how you approach challenges and solve problems. Use examples from previous work experiences to highlight your problem-solving skills, creativity and ability to work under pressure.
Answer Example: “I recently had to navigate a challenging problem while developing an app. The challenge was that the app needed to be compatible with multiple operating systems, but the coding language I was using only supported one operating system. To solve this problem, I researched different coding languages that would allow me to develop the app for multiple operating systems. After researching different options, I decided to learn a new coding language so that I could complete the project.”
This question can help the interviewer determine how you respond to challenges and whether you have strategies for overcoming them. Use examples from past experiences where you were able to improve an app or website after receiving negative feedback, or describe how you would investigate why users were unhappy with the app and make changes to improve it.
Answer Example: “If an app I developed was released and received negative feedback, I would first try to understand why the user had this reaction. It’s important to understand what aspects of the app are causing the issue so that I can determine if there is anything I can do to fix it. If it’s something that can be fixed within the app itself, I would work quickly to make the necessary changes. If it’s something that requires more time and effort, I would communicate with the client to determine the best course of action.”
This question can help the interviewer understand how you handle stressful situations and whether you’re willing to ask for help when you need it. Your answer should show that you are willing to work hard, but also that you know when to ask for help.
Answer Example: “If I were given a deadline but wasn’t sure if I could meet it, my first step would be to communicate with my team members and find out if anyone else was in the same situation. If not, I would then assess the current state of the project and determine if there is any way to speed up the process without sacrificing quality. If there isn’t, then I would discuss with my manager whether we should push back the deadline or if there is any flexibility in the timeline.”
Communication is an important skill for developers to have. Employers ask this question to see if you can communicate effectively with other developers and non-developers. Use your answer to show that you can communicate in both technical and non-technical terms.
Answer Example: “I have excellent communication skills and am comfortable talking with other developers and non-developers alike. I always try to use plain language when explaining technical concepts, so that even someone with no programming background can understand what I’m saying. I also make sure to listen carefully when someone is explaining something to me, so that I can ask questions if I don’t understand something.”
This question can help the interviewer understand how you approach challenging situations and whether you have any experience working with legacy code. Use examples from previous work to highlight your problem-solving skills, ability to adapt and willingness to learn new technologies.
Answer Example: “I’ve worked on both legacy code and new code, but I approach them differently. When working with legacy code, I focus on understanding the existing system and breaking down each component. This helps me identify areas of improvement and makes it easier to implement new features. With new code, I like to start with a blank slate and build from scratch. This allows me to create a more efficient and optimized system from the ground up.”
This question can help the interviewer understand how you approach your work and what your priorities are. Your answer should show that you have a strong attention to detail, can solve problems and are willing to put in the time needed to ensure that an app is ready for release.
Answer Example: “When testing an app, I look for several things. First, I make sure that all of the features work properly. Then, I check that the user interface is intuitive and easy to use. Finally, I check for any bugs or errors that may have been missed during development. If I find any issues, I address them immediately so they don’t become larger problems later on.”
This question is a great way to show your knowledge of the industry and how it works. You can answer this question by explaining what steps you would take to make an app more scalable, or you can describe an experience where you made an app more scalable in the past.
Answer Example: “When it comes to making an app more scalable, I always start by analyzing the current system. I look at how many users are using the app, what features they’re using most often and what type of data they’re inputting. Once I have all of this information, I can create a plan for how to scale the app.”
Debugging is a skill that all developers need to have. The interviewer may ask this question to see how you approach problem-solving and your process for debugging an app. Use examples from previous experiences where you had to debug an app and explain what steps you took to fix the issue.
Answer Example: “When debugging an app, I first look at the code to see if there are any errors or issues. If there aren’t any coding issues, then I move on to testing the app on different devices to make sure it works properly. I also use different browsers to see if there are any compatibility issues. Finally, I check for any user interface issues or bugs.”
This question is an opportunity to show the interviewer that you have unique skills and talents. You can answer this question by describing a skill or talent that makes you stand out from other developers. Consider highlighting a skill that is important for this role, such as your ability to work with a team or your experience with specific programming languages.
Answer Example: “I believe my experience and skills make me stand out from other mobile developers. I have over 5 years of experience in developing mobile applications using various technologies such as Java, Objective-C, Swift, HTML5, CSS, JavaScript, and Android Studio. During this time, I have developed a wide range of applications including games, business applications, and educational tools.”
This question helps the interviewer determine your level of expertise in programming languages. Use this opportunity to highlight any languages you’re familiar with and how you use them in your daily work life.
Answer Example: “I am proficient in Java and C++, having worked with them for several years. I also have some experience with Python and Swift, which I use regularly for my mobile development projects. In addition, I am familiar with Objective-C, JavaScript, HTML, CSS, and SQL.”
This question is your opportunity to show the interviewer that you have a strong understanding of what it takes to be successful in this role. You can answer by identifying a skill, explaining why it’s important and giving an example of how you use that skill in your work.
Answer Example: “I think communication is the most important skill for a mobile developer to have. A developer needs to be able to communicate with others on their team, including designers, project managers and other developers. They also need to be able to communicate with users through the apps they’re developing. This means having an understanding of user experience and how to make an app easy to use. Finally, it’s important for developers to be able to communicate any issues or concerns they have with their code so that they can be resolved before the app is released.”
This question can help the interviewer determine how committed you are to your career and whether you’re likely to stay with their company for a long time. Your answer should show that you’re passionate about learning new things, but also that you have enough experience to be successful in your current role.
Answer Example: “I am always looking for ways to improve my programming skills. I subscribe to several newsletters and blogs about different languages and technologies, and I attend at least one conference every year to learn more about what’s available. I also try out new coding tools as they become available because I enjoy experimenting with new technology.”
This question is a great way to test your problem-solving skills and ability to work under pressure. When answering this question, it can be helpful to describe a specific instance in which you fixed a bug in an app and how you did it.
Answer Example: “When I find a bug in an app I developed, the first thing I do is determine what caused it. This involves looking at the code carefully to identify any mistakes I may have made during development. Once I’ve identified the source of the bug, I can then fix it by making appropriate changes to the code.”
