17 Senior Mobile Developer Interview Questions and Answers

With more people than ever using smartphones and other mobile devices to access the internet, the need for mobile app developers is higher than ever. If you want to be a part of this growing industry, you’ll need to be able to answer some tough questions in your job interview.

In this guide, you’ll find several samples of questions and answers, including questions for a senior mobile developer job interview.

Are you comfortable working with a team of developers to create a single product?

This question can help the interviewer understand how you might fit into their company culture. In many cases, a senior developer will work with other developers to create a single product or app. Your answer should show that you are willing and able to collaborate with others.

Example: “I have worked on teams of developers before, and I find it helpful for collaboration. When working in a team, I try to be as open as possible about my ideas and suggestions so that everyone has an opportunity to contribute. This helps me get feedback from my colleagues and ensures we’re all on the same page when creating a new product.”

What are some of the most important skills for a senior mobile developer?

This question can help the interviewer determine if you have the skills necessary to succeed in this role. Use your answer to highlight some of the most important skills for a senior mobile developer and explain why they are important.

Example: “The two most important skills for a senior mobile developer are problem-solving and communication. As a senior developer, I would be working with other developers who may need my assistance or guidance. Having strong communication skills is essential because it allows me to share my knowledge and expertise while also listening to others. This helps me understand what challenges my team members are facing so that I can provide solutions.”

How do you stay up-to-date with the latest trends in mobile development?

This question can help the interviewer understand your passion for technology and how you use it to benefit your organization. Your answer should show that you are eager to learn new things, but also have a plan for keeping up with industry trends.

Example: “I am passionate about learning new things, so I always make sure to attend at least one conference per year where I can meet other developers and hear their experiences. I also subscribe to several newsletters from different companies that offer mobile development tools or services. This way, I can stay informed of any updates they may be making to their products.”

What is your experience with developing in Swift?

Swift is a programming language that Apple developed to create apps for its iOS operating system. It’s one of the most popular languages in the world, and many developers have experience with it. Your answer should show your knowledge of Swift and how you use it.

Example: “I’ve been using Swift since 2014 when I started developing mobile applications. In my last role, I was responsible for creating an app that would help users track their spending habits. The company wanted to develop this app quickly so we used Swift to build it. We were able to launch the app within six months, which was much faster than if we had used Objective-C.”

Provide an example of a time when you had to adapt your approach to a project to meet new requirements.

This question can help interviewers understand how you adapt to change and whether you have the ability to take on new challenges. Use examples from your previous experience that highlight your problem-solving skills, flexibility and willingness to learn.

Example: “In my last role as a senior mobile developer, I was tasked with creating an app for a client who wanted it to be compatible with both Android and iOS devices. At first, I thought this would be a simple task because I had already developed apps for both operating systems in the past. However, when I started working on the project, I realized there were some key differences between the two platforms that made them incompatible.

I spoke with my manager about the issue, and we decided to hire another developer to work on the iOS version of the app while I focused on the Android side. This approach allowed me to create a fully functional app for both operating systems within the deadline.”

If hired, what would be your priorities during your first few weeks on the job?

This question helps employers understand what you value and how you plan to contribute to the company. Your answer should include a list of your top priorities, such as learning about the company’s culture, meeting team members and understanding the project schedule.

Example: “During my first few weeks on the job, I would prioritize getting to know my new colleagues and learning more about the company’s goals and objectives. I would also like to get familiar with the current projects so that I can start contributing right away. Finally, I would want to learn about any software or tools we use so that I can begin integrating them into our workflow.”

What would you do if you were working on a feature and encountered a problem that you didn’t know how to solve?

This question can give the interviewer insight into your problem-solving skills and how you approach challenges. Your answer should show that you are willing to do research, ask for help or try different approaches until you find a solution.

Example: “If I encountered a problem that I didn’t know how to solve, I would first look at the documentation to see if there was an explanation of what caused the issue. If not, I would search online to see if anyone else had experienced this problem before. If I still couldn’t find an answer, I would ask my team members or other developers on the project for advice. Finally, if none of these options worked, I would take a break from working on the feature and come back to it later with fresh eyes.”

How well do you communicate with UX designers and product managers?

The interviewer may ask you this question to gauge your ability to collaborate with other members of the team. Your answer should show that you can communicate effectively and respectfully with others in a group setting.

Example: “I find it important to have regular meetings with my UX designer and product manager so we can discuss any changes or updates to our projects. I also like to meet with them individually at least once per week to get their feedback on my progress. This helps me ensure that I’m meeting all of their needs while still making sure I’m delivering quality work.”

Do you have any experience working with voice assistants? If so, can you provide an example of a project you worked on that involved a voice assistant?

Voice assistants are becoming more popular, and many companies are looking for ways to integrate them into their products. This question can help the interviewer determine if you have experience with voice assistants and how you might use them in your work. In your answer, try to explain what a voice assistant is and why it’s important to consider integrating one into your projects.

Example: “Voice assistants are essentially digital personal assistants that people can interact with through speech. I’ve worked on several projects where we integrated voice assistants like Alexa or Google Assistant. For example, at my last job, I was tasked with creating an app that would allow users to order food from their favorite restaurants using only their voice. We used Alexa as our voice assistant because of its ability to understand natural language.”

When is it appropriate to use background processing to complete a task?

Background processing is a common feature of mobile applications that allows users to complete tasks in the background while using other features. This question helps employers understand your knowledge of when and how to use this important function. In your answer, explain why you would use background processing for a specific task and what benefits it offers.

Example: “I would use background processing when I need to perform a long-running task without interrupting the user experience. For example, if I needed to download data from an external source or process large amounts of information, I would use background processing so the app doesn’t freeze up during these processes. It also frees up resources on the device so the user can continue to use the app while the background task is running.”

We want to make it easier for our users to share content with one another. Give me an example of a feature you would design to facilitate sharing.

This question is an opportunity to show your creativity and problem-solving skills. You can demonstrate how you would approach this challenge by describing a specific feature you designed in the past that helped users share content with one another.

Example: “In my last role, I was tasked with creating a social media platform for a client who wanted to make it easier for their customers to share content on multiple platforms. To accomplish this, I created a sharing tool that allowed users to share content directly from our website onto other popular social media sites like Facebook and Twitter. This made it easy for our customers to share content across multiple channels.”

Describe your process for testing your work.

This question can help the interviewer understand how you approach your work and whether you have a system for testing your code. Describe your process in detail, including what tools you use to test your work and how often you test it.

Example: “I usually test my code at least three times before I submit it for review. The first time is when I write the code, which helps me identify any errors or bugs as soon as they occur. The second time is after I’ve written all of the code but before I compile it, which allows me to fix any syntax issues that may arise. Finally, I test the entire application once more before submitting it for approval.”

What makes you a senior mobile developer?

This question is an opportunity to show your interviewer that you have the skills and experience necessary for this role. You can answer this question by describing what makes you a good developer, including any certifications or training you’ve completed.

Example: “I am a senior mobile developer because I have extensive knowledge of coding languages and frameworks. I know how to use Java, Swift and Objective-C to create apps for both iOS and Android devices. In my last position, I also developed several applications for wearable technology, which has given me valuable experience in developing apps for different platforms. I’m always looking for ways to improve my skills as a developer, so I regularly attend webinars and online courses to learn about new technologies.”

Which programming languages do you know how to use?

This question can help the interviewer determine your level of expertise with various programming languages. Use this opportunity to list any languages you have experience using and explain how they helped you develop mobile applications.

Example: “I’ve worked extensively with Java, C++ and Python coding languages. These languages are some of the most common ones used in developing mobile apps, so I’m comfortable working with them. In my last role, I also learned Ruby on Rails, which is a framework that helps developers create web applications. Learning new languages has always been one of my favorite parts of being a developer because it allows me to expand my knowledge and improve my skills.”

What do you think is the most important aspect of mobile development?

This question is your opportunity to show the interviewer that you understand what’s important in this role. Your answer should include a specific skill or quality and how it helps you do your job well.

Example: “I think the most important aspect of mobile development is creating apps that are user-friendly. I always make sure my apps are easy to navigate, with intuitive features and functions. This means users can learn how to use an app quickly and easily, which leads to more engagement and better reviews.”

How often do you update your personal portfolio?

This question can help the interviewer determine how often you update your portfolio with new projects and accomplishments. Showcase your ability to stay up-to-date on industry trends by mentioning a time when you updated your portfolio within a few months of completing a project or adding a new skill set.

Example: “I try to update my portfolio at least once every six months, but I recently added two new projects to my portfolio after only three months because they were so different from anything else I had worked on before. The first was an app that tracked users’ sleep patterns, and the second was a mobile game that used augmented reality technology.”

There is a bug in one of your recent code updates. How do you handle it?

This question can help the interviewer understand how you handle mistakes and challenges in your work. Use examples from previous experience to show that you are willing to take responsibility for your actions, learn from them and move forward with your work.

Example: “In my last role as a senior mobile developer, I was working on an update to our app when I noticed there were some bugs in the code. Rather than rushing through the rest of the update, I decided to go back and fix each bug one by one until they were all gone. This process took me longer than if I had fixed everything at once, but it allowed me to ensure that every piece of code was correct before moving forward.”