SUMMARY

• 7 years in Android mobile app development.
• 5 Android applications published to Play Store.
• Contribute to Scrums, Sprint planning meetings, weekly code reviews, Sprint retrospectives and backlog management meetings.
• Experience with in - app payment integration.
• Use of Android Studio or Eclipse for development environment.
• Experience with embedded local storage solutions such as SQLite.
• Skilled in Material Design and MVC, MVP, MVVM architectures.
• Develop apps dat run smoothly and display on all devices, resolutions, and orientations.
• Skilled with use of architecture and design patterns based on app functionality.
• Follow teh latest Material Design guidelines, and develop exceptional UIs with animations, UX optimization, Fragments, Layouts, Animations, CompoundViews, CustomViews, ListViews, and RecyclerViews.
• Implement RESTful data consumption using Retrofit.

TECHNICAL SKILLS

Android Development: Retrofit, JobScheduler, EventBus, Bluetooth Low Energy, Glide, Push Notifications, Media Player, RxJava, Answers, Constraint Layout, Content Providers, Samsung SDK, Broadcast Receivers, PushBots, Schematic, Push Notifications, ExoPlayer, SpongyCastle, Logger, Parceler, RecyclerView Animator, IntentServices

Programming: Java, Kotlin, SQL, C, C#, C++, Visual Basic

IDE: Android Studio, Eclipse, IntelliJ, Visual Studio

Dependency Injection: Android Annotations, Dagger 1, Dagger 2, Butter Knife. RoboGuice

Application Quality Testing: Junit, Robolectric, Espresso, Mockito, Robotium, MonkeyRunner

Project Methodologies and Tools: Agile, Scrum, Pair Programming, Peer Code Review, Mentoring, Sprint Planning, Sprint Backlog, Sprint Retrospective, Daily Scrums, JIRA, Kanban, Bugzilla, Confluence, Javadoc

Memory and Energy: Bluetooth Low Energy, Dalvik, Memory Mapping, Leak Canary

Security/Encryption: Bouncy Castle, UI Automator, ProGuard

Continuous Integration Servers: Jenkins, Hudson, Travis

Information Technology: Microsoft Windows, Microsoft Of ce, Microsoft IIS, Database Management Systems

PROFESSIONAL EXPERIENCE

Senior Android Mobile Application Developer

Confidential, Woodbury, MN

Responsibilities:

• Served on a development team dat employed an Agile methodology with Sprints every 2 weeks.
• Built app using MVVM architecture with a ViewModel inside every Activity.
• Wrote code functions in Kotlin.
• Used LiveData builder to combine Kotlin coroutines with LiveData Coroutines Asynchronous.
• Followed design guidelines set by internal standards.
• Utilized testing libraries and frameworks Junit, Espresso, Mockito, and Robolectric.
• Used GitHub/Git extensively.
• Used reactive frameworks such as RxJava, RxAndroid, RxBluetooth, and RxKotlin.
• Used Dagger 2 for dependency injection.
• Transitioned back-end communications from OKHttp to Retrofit with Kotlin Coroutines lightweight threading.
• Executed Android Architecture Components to improve teh user experience (included LiveData, ViewModel, and Room as teh SQLite database to cache teh Android app data).
• Customized teh UI by introducing CustomViews.
• Worked with remote peers managing work schedules and time zones and used Android Keychain to secure this information.
• Documented in Confluence.

Senior Android Developer

Confidential, San Francisco CA

Responsibilities:

• Collaboratedwith teh server-side developers to design APIs specifically for teh Android application.
• Worked in a multi-disciplinary team across geographic regions (US and London (England) within an Agile environment (daily standups, weekly planning meetings).
• Contributed to technical decisions, striving for clean architecture.
• Assisted in designing appMVVM architecture, selected necessary tools, frameworks, and patterns withAndroidJetPackArchitectural components (LiveData,ViewModel, Room).
• Migrated and developed new productsfeaturesusing Kotlin programming language features and AndroidKTX.
• Workedwith Android Beacon Library API to request ranging update from one or more beacons at a frequency of approximately 1Hz.
• Exporteddata to CSV or PDF using Android PDFViewer and FastCRV external library.
• Savedand backup a GPS "mileage receipt" for each trip using FireBaseCloud Backend and Realtime database services.
• Configured capability to upload paper receipts of meals, supplies, and other expenses with background threads using JobSchedulersandJobIntentServicesto MongoDB backend.
• ConsumedMilageAPI and Accounts details API using Retrofit OkHTTP andRxJava(RxAndroid) networking libraries.
• Upgradedpayments systems within teh app by incorporating Stripe SDK to accept and manage card payments.
• Collaboratedwith external clients to include Branch SDK for mobile conversion, retention, and engagement through deep linking and user routing.
• Used Mockito API for Capturing teh arguments, wrapping Java objects with spy and verifying teh calls on teh mock objects.
• Refactored code base to implement dependency injection strategy using Dagger library.
• Created several components and factory interfaces to isolate app components into modular fashion.
• Implemented background services to keep track of BLE connectivity and resolve issues with Android Oreo background limitations.
• Coded schedulable jobsthroughWorkManagerApito has routines for backup information from Mileage Website entries.
• Definedmigrations strategy with teh implementation of Room database to remove previousSqliteOpenhalper implementation.
• Coded Bluetooth BLE services to scan devices and communicate attributes between them using RxAndroidBLE library.

Android Mobile App Developer

Confidential, New York, NY

Responsibilities:

• Worked within an Agile project methodology framework and attended Scrum meetings and team sprints.
• Initially refactored some parts of teh application from MVP architecture to MVVM architecture.
• Replaced old legacy Java code with Kotlin coroutines, extension functions, delegated properties, and configured null safety checks and higher-order functions.
• Used RxKotlin in conjunction with RxAndroid, RxBinding libraries to make app multithreaded and perform asynchronous operations.
• Worked with a testing team and used developer testing tools Robotium in Android.
• Cleaned up code to make it more efficient, scalable, reusable, consistent, and managed teh code base with Git and Jenkins for continuous integration.
• Employed a test-driven development methodology and used Jenkins CI for continuous integration.
• Worked with Git on a private Git server.
• Created asynchronous operations using multiple strategies: AsyncTask, Handlers, Loopers, Intent Services, and Loaders for Android.
• Created multiple scripts in teh Gradle file for test automation, reporting, signing and deployment.
• Implemented teh best practices for Android mobile development with their main components: Activities, Services, Content Providers and Broadcast Receivers.
• Utilized DDMS (Dalvik Debug Monitor Server) and TraceView for debugging and detecting memory leaks.
• Used JUnit framework for Unit testing of application.
• Participated in teh quality assurance of teh app, including testing of teh User Interface, and tested teh app on different mobile devices.
• Used Espresso and Mockito for testing teh UI and App functionalities.

Android App Developer

Confidential, Mayfield, OH

Responsibilities:

• Assigned to an Agile development team and attended daily Scrum meetings to track app development progress.
• Closely worked with teh UI/UX team to follow guidelines as accurately as possible.
• Programmed Java code and ViewLayouts.
• Refactored code to change a previous MVC implementation to an MVP architectural pattern.
• Worked with JDK (Collections, Generics, Networking, Core Java) and applied Java concurrency and memory management.
• Utilized Android and third-party frameworks to use teh multithreading capabilities of teh physical devices: AsyncTasks, IntentServices, Handlers, Threads, and RXJava instances.
• Incorporated Facebook SDK and Twitter API for logging, posting, and share experience.
• Worked with Butter Knife, Font Awesome, and GSON.
• Collaborated with various teams to quickly comprehend existing Android application architecture, functionality, features and issues and how they effected new project requirements.
• Used LiveData from Jetpack for Android to simplify handling of data during lifecycle changes.
• Actively ensured dat UI/UX team followed Material Design best practices and guidelines.
• Refactored teh UI of teh browser for it to follow teh look and feel of teh phone carrier.
• Implemented Fabric Crashlytics and tracked app crashes for bug finding and fixing.
• Used JIRA board to receive and troubleshoot bug tickets from QA and Project Manager.
• Used TeamCity for Continuous Integration and release process for teh QA Team.
• Integrated Project Speedy to successfully reduce app loading time both in cold and normal starts.
• Managed pull requests and branching of teh source base using BitBucket’s Git.
• Added 5 new Layouts to teh application’s UI utilizing native Views and Widgets.
• Enabled push notifications by implementing OneSignal for Push Notification.
• Implemented Google Messaging services for Push Notifications.
• Created an exported Content Provider to share color findings with other applications.
• Implemented Picasso to download teh image from web services.
• Implemented animation and transitions from activities.

Mobile Android App Developer

Confidential, Paoli, PA

Responsibilities:

• Contributed and collaborated with developer team to write base code (Java) software on backlog items.
• Coded unit test systems in place of technical documents.
• Implemented secure data encryption using an SQLCipher instance.
• Developed layouts for user options, navigations, and UI tools to display options and reload preferences in teh app.
• Implemented Spork for handling Dependency Injection in options layout.
• Profiled teh app to ensure small memory footprint using DDMS.
• Pair-programmed to create teh “Login” feature using Facebook SDK and user email login through use of OAuth Autantication.
• Incorporated Crashlytics to deliver real-time, detailed crash reports with Jenkins CI.
• Worked with LRU Cache to increase teh performance of ListView scrolling to displaylatest data.
• Worked on fast and reliable messaging system using Google Cloud Messaging API.