SUMMARY

• 7 years’ experience in Android development.
• 5 Android apps published to Play Store.
• Overall combined Software and Android experience covers 16+ years.
• 6 published apps.
• Skilled coding new Android mobile apps from scratch as well as refactoring, transitioning, and revising existing apps.
• Demonstrated skill in Android mobile app IDE coding in Java and Kotlin.
• Experience converting Java arrays to mutable and immutable lists to reduce code overhead and provide consistency.
• Experience refactoring Java code to Kotlin, eliminating null pointer exceptions.
• Experience implementing new features in Kotlin.
• Apply Retrofit and GSON to retrieve information from an internally programmed APIs and make teh conversion between teh JSON and POJOs using GSON Convertor wif Retrofit.
• Use RxJava to handle teh responses from teh web services.
• Use sync adapters to load changed data from server and to send modified data to server from app.
• Use intent services and Retrofit wif OkHTTP3 to handle calls and process JSON objects wif GSON converter.
• Generate a Material Design ready codebases, including views in teh design support library.
• Develop UI for both landscape and portrait screen orientations using qualifiers.
• Use of Android JetPack for Data Binding to communicate between ViewModels and UI components.
• Implement JetPack LiveData to display most current data locally available.
• Simplify database back - end using JetPack Room Database.
• Use of Reactive-X RxJava and RxAndroid.
• Demonstrated hands-on ability working server-side software.
• Create robust automated test suites and deployment scripts.
• Hands-on wif relational databases MS SQL Server, MySQL, PostgreSQL, etc.
• Hands-on development in full software development cycle from concept to launch; requirement gathering, design, analysis, coding, testing. and code review.
• Current wif latest developments.
• Experience using version control tools Subversion SVN, Source Safe VSS, Git, GitHub, etc.
• Optimize performance, battery and CPU usage and prevent memory leaks using LeakCanary and IcePick.
• Proficient in Agile and Waterfall methodologies, working wif multiple-sized teams from 3 to 10 members often wif teh role of Scrum Master, and mentor to junior developers.
• Implement customized HTTP clients to consume a Web Resource wif Retrofit, Volley, OkHTTP and teh native HttpURLConnection.
• Implement Dependency Injection frameworks to optimize teh unit testing and mocking processes (Dagger, Butterknife, RoboGuice).
• Experienced wif third-party APIs and web services like Volley, Picasso, Facebook, Twitter, YouTube Player, and Surface View.
• Android app development using Java and Android SDK compatible across multiple Android versions.

TECHNICAL SKILLS

IDE: Android Studio, Eclipse, Visual Studio

RESTful Web Services: Retrofit, RxJava, Volley, OkHTTP, REST, SOAP, JSON, GSON, XML

Threading: Event Bus, Intent Services, Handlers, Loopers, Loaders, AsyncTask, Kotlin Coroutines

Programming Languages: Java, Kotlin, Java, JavaScript

Architecture Patterns: MVC, MVP, MVVM

Design Patterns: Singleton, Builder, Decorator, Dependency Injection, Façade, Visitor, Proxy, Mediator, Interpreter, Command

UX Design: Google Material Design, TextViews, WebViews, Navigation Drawer, Floating Action Button, Widgets, Compound View, Custom View, RecyclerView, View Pager and Tab Layout, Fragments

JetPack Components: Room, VIewModels, LiveData, Download Manager

Project Tools: JIRA, Kanban, Confluence, Trello, Slack

Repository/Versioning: Git, GitHub, GitLab, Bit Bucket, SourceTree

Continuous Integration: Jenkins, Travis, Hudson

Databases: SQLite, Firebase, Realm, MongoDB

PROFESSIONAL EXPERIENCE

Confidential, Miami, FL

Senior Android Developer

Responsibilities:

• Collaborated wif a team of 6 Android Developers, 5 iOS Developers, and 5 QA Testers in a crossover platform.
• Followed Agile methodology wif 3 weeks of Sprints, including a week for retrospective.
• Contributed wif a code coverage of 85%, enforcing PR approvals wif unit testing for every merge.
• Utilized tools such as JaCoCo for defining code coverage and increase track in PR merges approval.
• Collaborated wif backend developers to debug and track network issues and delays in connections.
• Followed TDD methodology wif Red-Green-Refactor, defining and implementing use cases and increasing teh scalability and robustness of teh code.
• Created branching approach to maintain code stability.
• Closely collaborated wif UI/UX developers to create look and feel similar in multiple cross-over platforms.
• Created several Custom Views and Compound views to follow seamless UI/UX.
• Refactored code base to implement Kotlin functional programming.
• Created and refactored utility classes to make use of Kotlin Extension Functions.
• Refactored network classes to make use of Kotlin suspended functions coroutines
• Utilized network debug tools CharlesProxy and CamillaProxy.
• Utilized a combination of Observables and Suspended functions to implement asynchronous operations.
• Refactored Repository Layer to follow MVVM Android Blueprint design pattern.
• Implemented Master Detail flow and created several locale assets to support portrait and landscape mode.
• Configuring Notifications channels to give different options to use and customize teh information details.
• Implemented Exoplayer for supporting playing videos in different formats.
• Used Espresso for teh automated UI testing RecyclerView interactions and Mockito was used wif Retrofit for mocking teh API call (Mockserver).

Confidential, Jacksonville, FL

Senior Android Developer

Responsibilities:

• Developed this new Android mobile app in Android Studio coding utilizing 3rd-party frameworks and libraries.
• Use Git and Jenkins to assist in integration.
• Created an exported Content Provider to share color findings wif other applications.
• Architected teh Android app on MVVM architectural pattern and utilized Singleton, Façade, and Decorator design patterns.
• Performed Automated testing wif Espresso.
• Consumed Web Services using a Retrofit instance wif a built-in GSON converter to parse JSON objects using Google GSON.
• Developed new features in Kotlin to reduce codebase wif data classes and extension functions.
• Implemented Android Support Libraries for backward compatibility.
• Used Firebase Cloud Firestore and Firebase Cloud Functions beta.
• Enabled notifications wif Google Cloud Messaging.
• Performed work in alignment wif Agile Scrum project management methodology.
• Participated in daily stand-ups and sprint meetings.
• Used Test-Driven Development and Continuous Integration wif Firebase Test Lab.
• Used Firebase Performance Monitoring to monitor app performance.
• Implemented Firebase real-time database for storage and persistence during sync events.
• Managed user image uploads and gallery using Glide.
• Maintained Android app quality in development through continuous integration process using GitLab.
• Used Jira for documentation, task tracking, backlog management, and meeting prep.
• Used custom views to easily re-use UI components built to UI/UX design specifications.
• Applied Dagger 2 as teh library for dependency injection for readability and clean code.
• Involved in Cipher encryption secured data process as it was being passed to teh server and watch, staying in compliance wif security standards.
• Collaborated wif teh web application development team to ensure proper integration between teh Android mobile application and web application.

Confidential, Denver, CO

Android Developer

Responsibilities:

• Worked in Android Studio and coded teh Android app using Java and Kotlin.
• Extensively used Dagger 2 for dependency injection andRxJavafor high performance wif multithreading.
• Architected teh appwif MVParchitectural pattern, and various design patterns such as Abstract factory, Builder, Façade, and other behavioral patterns as well.
• Implemented inline input validations and custom error messages natively in Android.
• Implemented a new fingerprint login library provided by vender.
• Attended design meetings to review UI/UX flows for teh newtouchID(fingerprint login) library.
• Redesigned teh splash screen flow to separate signup/ login items from splash screen logic.
• Assisted web wif automatic/ manual QA, and helped QA write Cucumber/ Ruby tests for web as well as for Android.
• Designed teh UI enabling fingerprint registration to user account and display confirmation “enrollment success” screen
• Trained a new Android dev in relation to theTouchIDstories me worked on.
• Used Timber for error handling and logging. Used Leak Canary andAppBoy, but all teh logs were added to tech debit which were never touched.
• Appium andSauceLabsused forforUI/UX tests.
• Use of Regex for Java and Cucumber/ Ruby.
• Utilized Rally for storyboards.
• Rubyminesused to aid in teh development of making/ debugging tests.
• Utilized Espresso for testing.

Confidential, NEWPORT BEACH, CA

Android App Developer

Responsibilities:

• Maintained high unit test coverage and continuous integration principles.
• Diagnosed and fixed bugs dat caused unintended product behavior.
• Used Picasso Image Loader for image loading and caching..
• Provided alerts and notifications wif Firebase Cloud Messaging and EventBus.
• Involved in development and enhancements of features to restrict teh usage based on Authorization and Autantication OAuth tokens.
• Used Retrofit and GSON to retrieve information from an internally programmed API and make teh conversion between teh JSON and POJOs.
• Communicated wif RESTful web services information using Retrofit, RxJava, and use of threading.
• Worked wif Dagger and RoboGuice for dependency injection to develop clean, maintainable code.
• Used private GitHub repositories to host internal code.
• Utilize Continuous integration and automated testing throughout teh mobile app development process.
• Worked wif Hudson continuous integration server for continuous integration.
• Used NewRelic to optimize and improve teh Android app performance.
• Used Jira for defect tracking and, project planning, and task assignment.
• Incorporated push notification wif MixedPanel for sending messages to users.
• Consumed teh RESTful Web Services using a Volley client.
• Work in an Agile development environment wif peer engineers to scope, develop and deliver a software experience dat realized teh product strategy.
• Implemented layouts using teh latest RecyclerView and CardView combinations to improve teh User Interface (UI).
• Used teh View Pager Indicator to provide feedback to teh user about teh background processing status.
• Incorporated Android Wear to notify teh user on teh Smart Watch.

Confidential, San Francisco, CA

Android Mobile App Developer

Responsibilities:

• Performed technical work following an Agile process wif teh practice of Scrums.
• Divided teh application into three different layers and took most of logic out from teh activities so dat we could test it wifout using instrumentation tests in MVP architecture.
• ConfiguredMixPanelwif Firebase API to send push notifications, record events and stored User Profiles.
• Worked and optimized teh feature Easily create and manage a Confidential profile’.
• IncorporatedPhotoViewimageViewlibrary to perform zooming, multi-touch, double-tap, and updated UI based on teh current zoom/scroll position.
• Performed instrumentation/UI testing, simulated user interactions, and asserted what happens afteruserinteractions.
• Improved Payment module to allow consumers to pay via credit card using Stripe and Braintree SDK.
• Pair programmed to implement 128-bit encryption to protect customer data in transit and on device using Java Cryptography Architecture and Android Crypto API.
• Created paid version product flavour and build variants for paid customers to expose advance features.