7. Front-end & Back-end Coding & Integration phases
This is the most complex phase—expect many iterations, with a constant feedback loop between your designer and your developer along the way. At this phase, both the front-end and back-end architecture of your app are built as a coordinated effort. While your app’s functionality is created, its system architecture is getting built. The front-end interface and the back-end server support software are dependent on one another, and the process usually involves a lot of back and forth. On the front end, you’ll be making decisions about how your app’s functions come to life with code—its computing logic. At the same time, any back-end engineering—any server-side components your app needs to run, like a database, APIs, middleware, etc.—are coded and integrated in this phase, linking them to the front end. Code a scalable app that’s fully integrated to all of your back-end software—the database, mobile APIs, and other related infrastructure it needs to run. If you don’t have the scope to build a server-side infrastructure, you may opt to purchase a Backend as a Service (BaaS) software bundle.
These include an array of storage options and features, but they aren’t completely “turn-key”—you’ll still need a developer who understands back-end engineering to integrate it into your app. Also, writing unit tests and running integration testing are crucial steps in this phase. Unit tests will run bits of code within the app software to ensure there aren’t bugs, while integration testing will ensure your backend is running smoothly and doesn’t affect your app’s performance.An experienced Android developer versed in both server-side and client-side coding, with an understanding of responsive design, Android’s software development kit (SDK), Android Studio, the Java or Kotlin programming languages, the Gradle build system, server-side scripting, database administration and integration, and server administration.