Aline Kolczycki Borges

At Uber, users needed a way to set their preferred emergency contacts in case something wrong happened during the trip.

The development of the feature included the architecture proposal, rewriting the contact picker component, and planning and monitoring the feature's release.

One of the key challenges was that five other features in the same app already used the contact picker component. So, we needed to balance out what we would include that could benefit the other features, like better UI and picking method, while not impacting our development timeline.

Another challenge was that the Driver and River apps would both use the feature with some things in common and some differences. The architecture allowed to reuse of the shared component with a high level of customization for both apps. I also had to work with designers and product managers to identify the parts that could be shared and increase development speed.

The project was launched worldwide, and millions of contacts were included in the first weeks.

Automated the module imports file, which built efficiency in feature teams and reduced the linked libraries errors from 40+ per month to zero.

The main PicPay app has 100+ iOS developers and 150+ different microfeatures modules and uses XcodeGen to organize and generate the Xcode project. Previously, when a developer imported a new module, he had to manually add the import in a separate file, which was very error-prone. Also, due to caching, it would build and work fine in Xcode, so people would just forget to add it. Though it would break when generating the release app.

The script was built in Swift for the command line, performs a sweep in all .swift files, creates a dependency graph, performs DFS to build the correct imports, and automatically modifies the import files. The script runs on every git push as a hook and only takes 1-2 seconds on each developer's machine, but it saves all the trouble of manually updating the files.

After launch, the errors went down to zero, and the overall time to build and ship new features was also reduced.

Later, the project allowed for a smoother integration of Bazel as a building system, as it was modified to work for .bazel files.