SUMMARY

• 6+ years' experience in Android Mobile Development. Skilled in various core Android and Jetpack architectural components.
• Strong understanding of design patterns such as MVC, MVP, MVVM, Singleton, Builder, Factory, Observer, etc.
• Up to date with new development patterns such as Dependency Injection (Dagger2), RxJava, and Coroutines.
• Experienced Java and Kotlin developer able to architect and design mobile applications based on business needs.
• Crafts quality code through code reviews and SOLID principles.
• Follows Android best practices and writes clean code.
• Applied Material Design guidelines and principles to enhance UI/UX. Strives for high unit test coverage and applies continuous integration methodologies.
• Well versed in automated testing frameworks such as JUnit, Mockito, and Espresso.
• Extensive experience in debugging and profiling Android applications.
• Able to work with project managers to convert business requirements to tasks.
• Able to solve problems creatively and clearly articulate ideas, problems, and solutions with the team.
• Experienced mentoring junior developers and training non - technical team members.
• Successfully worked with both on-site and off-site teams to complete and ship project deliverables.

TECHNICAL SKILLS

PROGRAMMING LANGUAGES: Kotlin, Java, C++, C, HTML, CSS, JavaScript, Python

IDE: Android Studio, Eclipse, Visual Studio, IntelliJ, NetBeans

DATABASE: SQLite, Room, MySQL, Microsoft SQL Server, Oracle, Firebase Realtime DB, Firestore, Mongo DB, PostgreSQL

MULTIMEDIA: Glide, Picasso, Fresco, ExoPlayer, VideoPlayer

THREADING: Java Thread/Runnables, ThreadPools, Loopers/Handlers, AsyncTask, Loaders, RxJava, Coroutines

PROJECT METHODOLOGIES: Agile, Scrum, Waterfall, SOLID, DRY, MVC, MVP, MVVM

VERSIONING/CONTINUOUS INTEGRATION: GIT, SVN, GitHub, Stash, BitBucket, GitLab, Jenkins, Travis CI

LIBRARIES: Retrofit, OkHttp, Dagger2, Material Design, Event Bus, Glide, Picasso, GSON

OTHER: Slack, Teams, JIRA, Trello, Stetho

PROFESSIONAL EXPERIENCE

SENIOR ANDROID DEVELOPER

Confidential

Responsibilities:

• Lead Android developer and point of contact (POC) on the team.
• Implemented RecyclerView to display flight times from departure to destination.
• Built various Android ATAK Plugins using Android Studio with the ATAK SDK.
• Developed both front and back end components of IFA web app.
• Integrated Android Bluetooth API to scan and display nearby sensor information.
• Demoed updates to product owners, SMEs and stakeholders.
• Utilized Content Providers to interface with 3rd party Android applications to integrate sensor data.
• Implemented Kotlin Coroutines to create async/multithreaded applications to distribute computation workloads.
• Compressed audio files using Gzip.
• Queried Android internal sensors and submitted them to internal server.
• Created custom views to match wireframes designed by the product owners.
• Employed shared preferences to serialize and deserialize key value data.
• Requested image data using Content Providers.
• Encrypted/decrypted shared preferences for security.
• Base64 Encoded audio files.
• Recorded audio files using Audio Recorder API.
• Consolidated application into a reusable library used in different projects.
• Displayed data in separate tabs us9ing Viewpager2 and fragments.
• Crafted custom data table with frozen row and column headers and sortable columns.
• Performed date time validation with date and time dialogs.
• Added back end routes to support front end views.
• Queried database records using KNEX.js.
• Constructed front end views using HTML, CSS, and JS.
• Modified and added tables/columns to database based on product owner feedback.
• Performed code reviews for fellow teammates.
• Wrote step by step APK installation instructions as well as control flow diagrams to demonstrate workflow.

SENIOR ANDROID DEVELOPER

Confidential

Responsibilities:

• Improved real time room quotes and availability by performing asynchronous network calls using Retrofit and RxJava.
• Parsed data using built in GSON Converter to populate detailed room information when selecting room types
• Led team to refactor portion of codebase from Java to Kotlin.
• Mentored junior developers throughout the Agile lifecycle.
• Detected memory leaks using Leak Canary.
• Implemented unit/instrumentation testing using JUnit and Espresso.
• Refactored code from MVP to MVVM to streamline codebase and reusability of logic.
• Created a Background Service to update JSON stored locally on the device.
• Implemented scrollable RecyclerView to display searched properties and resorts listings.
• Improved image loading from cache using Glide.
• Cached user data locally into SQLite database for offline viewing.
• Refactored methods to reduce the method count to under 64k to avoid multidexing.
• Encrypted and stored user settings in shared preferences.
• Supported multiple language and regional support using Android string resources.

SENIOR ANDROID DEVELOPER

Confidential

Responsibilities:

• Implemented RecyclerView to display flight times from departure to destination.
• Leveraged QR Droid for creating scannable boarding passes.
• Reduced boilerplate code by using Dagger dependency injections.
• Performed asynchronous network calls using Retrofit to retrieve user flight search results.
• Preserved data through configuration changes to enhance user experience.
• Increased readability of Gradle dependencies by introducing the ‘because’ clause.
• Integrated ROOM as an abstraction layer on top of SQLite.
• Refactored unit tests from Java to Kotlin.
• Implemented unit and instrumental tests using JUnit, Mockito, and Espresso.
• Participated in daily SCRUM meetings to exchange work progress and pain points.
• Tracked revisions using Git in conjunction with internal Bitbucket server.
• Secured codebase from reverse engineering through Proguard.
• Debugged and tested using Dalvik Debug Monitor Server (DDMS).

ANDROID DEVELOPER

Confidential

Responsibilities:

• Populated POJO’s using Java native JSON Parser with data collected from JSON responses.
• Analyzed health of application using Crashlytics.
• Implemented 2-way databinding to facilitate communication between views and view models.
• Documented codebase using JAVADOC.
• Implemented multiple fragments in a single activity design for the application.
• Debugged internal SQLite database issues using Stetho.
• Practiced continuous integration and created builds on internal server using Jenkins.
• Streamlined data retention on configuration changes using LiveData.
• Coordinated with local and overseas teams on designing application.
• Performed spring planning and project management using JIRA.
• Analyzed and troubleshooted application using the Android Profiler, debugger, and logger.
• Used parcelable to marshal objects to and from activities.
• Developed single and multi-pane activities for fragments to support both phone and tablet devices.
• Created prototypes of UI following Material Design best practices.
• Increased network call securing through SSL Certificates and Certificate Pinner.

ANDROID MOBILE APP DEVELOPER

Confidential

Responsibilities:

• Cached network connections in final build using content providers.
• Architected MVP pattern for code reusability, maintainability, and separation of concerns.
• Implemented instance handlers for threading.
• Converted project from AsyncTask to RxJava for more robust error handling and asynchronous operations.
• Added push notifications using Urban Airship.
• Configured intent filters to use implicit intents for accessing various activities.
• Persisted data to users using custom views.
• Ensured data integrity on screen rotations by handling fragment retention.
• Worked in TDD first agile environment.
• Updated locally stored JSONS using background services.
• Used Glide to improve image loading from cache.
• Parsed JSON results from internal API using GSON.
• Encrypted shared preferences for holding basic user configuration information.
• Remotely configured application behavior using Google Tag Manager.
• Participated in all parts of the app development lifecycle from planning to app deployment in Play Store.

ANDROID DEVELOPER

Confidential

Responsibilities:

• Implemented horizontal RecyclerView with divider item decoration for popular items.
• Used Picasso for quick image retrieval and displayed to UI.
• Enabled customers to contact support through text, email, or by phone using implicit intents.
• Implemented several design patterns such as Builder, Singleton, and Observers.
• Set up Runtime Permissions based off customer’s response to dialogs.
• Refactored and optimized seconds of code to maximize resource usage.
• Implemented dynamic fragments from network connection status.
• Added QR and barcode scanning functionality by using QR Droid.
• Used Android services to perform long running operations without blocking the UI thread.
• Refactored MVC to MVP for cleaner codebase.
• Directed customers to the nearest retail store by determining user location through Fused Location Framework.
• Debugged Network calls using Charles Proxy.
• Created an environment for success through pair programming and code reviews.
• Executed tasks away from the main thread by using loopers, handlers, and runnables.
• Developed a Navigation Drawer for easier navigation for easier app use.
• Created infinite scrolling for the list of items currently active in the RecyclerView.