Works effectively within established iOS or Android architectures, following current best practices

• Delivers features requiring simple local modifications

• Adds simple actions that call server endpoints

• Reuses existing components appropriately

• E.g. Added existing button to a different iOS surface

• E.g. Add follow button for publications on Android

• E.g. Fetched and displayed a new stream, using existing stream item styles

Develops new instances of existing architecture, or minor improvements to existing architecture

• Defines new useful and appropriate proto-generated objects

• Creates simple new activities on Android

• Migrates code from old patterns to new patterns

• E.g. Upgraded SDWebImage to a new major version

• E.g. Added support for rendering a new type of stream item

• E.g. Prototyped a simple new feature quickly

Designs major new features and demonstrates a nuanced understanding of mobile platform constraints

• Implements complex features with a large product surface area

• Works effectively with Android reactive programming framework

• Adds support for new iOS features after a major iOS version upgrade

• E.g. Designed iOS caching strategy for offline reading

• E.g. Built series reader on Android

• E.g. Informed the team about recent best practice changes and deprecations

Builds complex, reusable architectures that pioneer best practices and enable engineers to work more effectively

• Pioneers architecture migration strategies that reduce programmer burden

• Fixes subtle memory management issues

• Implements interactive dismissals that bring delight

• E.g. Upgraded CocoaPods to a new major version

• E.g. Designed architecture for fetching and rendering stream items

• E.g. Migrated Android persistance layer to reactive programming

Is an industry-leading expert in mobile engineering or sets strategic mobile direction for an eng team

• Defines long-term goals and ensures active projects are in service of them

• Designs and builds innovative, industry-leading UI interactions

• Invents new techniques to responsibly stretch limits of the Android platform

• E.g. Defined and drove complete migration plan to Swift or Kotlin

• E.g. Implemented Android recycler views before platform support existed

• E.g. Pioneered application-level abstractions for multi-app environment