Chris Davis Email & Phone Number

United Kingdom

• Helped the company to make the transition from traditional to Test Driven Development. • Used REST to communicate with web services and replaced old third party library versions with Retrofit 2.0 and Okhttp caching mechanisms. • Re-skinned the application using the material design guidelines including RecyclerViews for ListViews.• Combined Retrofit with RxJava library for composing asynchronous and event-based programs by using observable sequences.• Created Custom ImageView for recycling, memory efficiency, image transformations, automatic memory and disk caching.• Tested the user interface implementing Espresso. • Fixed bug with hidden apps and improved dock drawer animation.• Mentored and led junior developers.

• Fixed Bluetooth connection issues and make app compactible for Marshmallow version 6.0. • Leveraged Android Bluetooth APIs to wirelessly connect to other Bluetooth devices and implement point-to-point and multipoint wireless features.• Used API to establish RFCOMM channels, connect to other devices through service discovery, facilitate two-way data transfer with other entities, and manage multiple connections.• Created unique custom controls to match and improve on prototyped iOS application.• Performed JUnit testing for the application’s critical functions.• Used Leak Canary in order to find memory leaks, optimize and improve the performance. • Injected modules using dependency injector such as Dagger and ButterKnife binding for Android views.• Mentored and led junior developers.

• Implemented secure data encryption using an SQLCipher instance. • Supported multiple screen devices using Fragments and width-aware layouts. • Re-factored the code with MVP design and TDD principles.• Integrated Crashlytics to deliver real-time, detailed crash reports.• Used okttp for asynchronous connection pooling, transparent compression, and response caching.• Designed custom views for making non-native UI/UX controls. • Worked on encryption/decryption techniques using AESCrypt library.

• Added Download Manager, Intent services and AsyncTasks to download PDF files without freezing the UI. • Designed SQLite database schema for implementing persistent data storage.• Mounted a WebView to render HTML content from various web sites. • Implemented Bolts framework for asynchronous tasks and handling complex errors.• Used Urban Airship to send push notifications for new available magazines and articles.• Set up jaCoCo to check my code coverage of new code.• Used fragments, Sliding Menu library and tabs to improve the navigation user experience.

• Leveraged applicable best-practice design patterns including MVC, multithreaded programming, asynchronous programming, singletons, and injection.• Ensured backward-compatibility through use of Support packages, Fragments, external libs, ActionBarSherlock, and ActionBarCompact.• Incorporated Facebook SDK for easy log-in and social interaction.• Integrated Google Analytics for efficient tracking of user events within the application.• Worked with Volley for consuming RESTful web services.• Implemented View Holder Pattern in ListView Adapters to improve the memory usage.