You're about to hire a mobile app developer. What qualities should you look for?

Checking the developer's portfolio and references is crucial when hiring for mobile app development. A portfolio provides insight into the developer's previous work, showcasing the features, design, and functionality of the apps they've built. Asking for references from past clients or employers allows you to gather feedback on the developer's performance, reliability, and communication skills. A good developer should have a proven track record of delivering successful apps that align with the client's vision and goals. This due diligence helps ensure that you hire a developer who can meet your project requirements effectively.

I will check first portfolio, and look at his/her apps/projects. Which tech stack they used, how they code efficient to read and manage it, which architecture they used etc.

When hiring a mobile app developer, it's essential to consider their proficiency in platforms and programming languages. Depending on your target audience and market, you may require a developer skilled in building apps for iOS, Android, or both. Each platform has its own requirements, tools, and best practices, so it's crucial to find a developer who is familiar with them and can utilize them effectively. Additionally, look for proficiency in programming languages and frameworks commonly used in mobile app development, such as Swift, Objective-C, Java, Kotlin, React Native, or Flutter. A proficient developer should be capable of writing clean, efficient, and secure code that adheres to platform and language standards and conventions.

Programming language does not matter much like if you know any oops language then it will be easy to learn any other language. If you are proficient in one language then you will good??.

I'd probably put this right up there with a developer being able to code. A slick user experience and user centric designs can be the difference maker when choosing a developer. Hiring a company that focuses on what I call the 'edge cases' and 'closing the loops' is essential. So often, small UX flaws get overlooked in the early stages of development which can lead to a poor user experience and bad first impressions. Choose someone who values design and takes time to deliver quality. It pays in the long run.

I would suggest anyone looking to hire a mobile app developer, the first and foremost thing to consider is their ability to analyze the problem and solve it. They are surely gonna get errors and bugs, but to prevent them from being blockers, the person should be very skillful in problem solving and debugging. The app quality must be ensured and must not be compromised at any cost.

There are some things I would consider before selecting. One is how he learns things which are not available on YouTube. Does he know how to read the documentation. What does he do when stuck in a problem and not able to solve even with the help of Google and stack overflow too then what are the next steps he takes?