SUMMARY

• 11 years working in the Information Technology (IT) field.
• 4+ years working with the Android Software Development Kit.
• 8+ published apps in the Google Play Store.
• Worked with GSON and Jackson library to parse JSON files.
• Made use of communication between common data between apps over network requests using Retrofit.
• Implemented View Holder Pattern in ListViews to help with the rendering and resource loading.
• Designed and implemented Android application to product and UX specification.
• Worked with the design team and the usability specialist to design a user friendly interface for the app.
• Detected new improvement opportunities and implemented them using Volley Library and persistent data.
• Used Fragment to support larger screen such as tablets and 6 inch phones.
• Design and develop functionality between user’s interaction and delegating it back to server using RESTful web services and JSON parsing.
• Created technical documentation related the software development process.
• Leaded of the team in charge of gathering the requirements from the customer.
• Integrated payment methods such as Android Pay, Visa API, MasterCard API.
• Created Asynchronous operations using multiple strategies: AsyncTask, Handlers, Intent Services and Loaders.
• Used LeakCanary in order to find memory leaks, optimize and improve the performance.
• Attended daily SCRUM meeting to track app development progress.
• Developed a customizable interface with multiple layouts and several compound views and custom views.
• Turned technical specs into Android multi pane Activities created using Fragments.
• Generated documentation for detail design including wire - framing using JustInMind prototyping tool.
• Used support libraries to ensure backward compatibility with older android versions.
• Used Spongy Castle and ProGuard to encrypt sensible data.
• Supervised the implementation of the push notifications setting up a Google Developer Account and creating the local key in the app base-code.
• Translated designs and wireframes into high quality views and code.
• Utilized Jira as the issue tracking tool.
• Added Hugo support as a third party logging library to receive debugging information.
• Implemented a WebView control to reuse some legacy web application functionality within the native app.
• Created Services, AsyncTasks to perform update information check to avoid freezing the user interface.
• Used injection dependencies: ButterKnife and Android Annotations.
• Implemented the user interface by using Custom Views, ListView, RelativeLayouts, LinearLayouts and TableLayouts.
• Consumed web services using a traditional approach with no third party libraries involved.

TECHNICAL SKILLS

• Activities
• Android Lifecycle
• Android M
• Android Pay
• Android Studio
• Asynctasks
• Bugtracking
• Buildvariants
• Butterknife
• Custom Views
• DDMS
• Deadlines Mapping
• Deadlines Setup
• Digital Documentation
• Flavors
• Flurry
• Fragments
• GCM
• Google Maps API
• GSON
• Hibernate
• HTTP
• Jackson
• Java SE
• Jenkins
• Jira
• JSON
• JustInMind
• LeakCanary
• Linearlayouts
• Listviews
• Mastercard API
• Material Design
• MVC
• MVP
• MVP
• Notifications
• OkHTTP
• Panels
• Picasso
• Relational Database
• RelativeLayouts
• Requirement Gathering
• Restful
• Retrofit
• SCRUM
• Social Networks
• Software Development Lifecycle
• Spongy Castle
• Sqlcipher
• Sqlite
• Subversion
• Support Libraries
• Tablelayouts
• Tab Navigation
• Tabs
• UI/UX
• Unit Testing
• ViewHolder Pattern
• ViewPagerIndicator
• Visa API
• Visual Basic
• Volley
• WebViews

PROFESSIONAL EXPERIENCE

Senior Android Developer

Confidential, New York, NY

Responsibilities:

• Implemented Google Maps for geolocation purposes
• Implemented Picasso in order to use Asynchronous networking and image loading.
• Worked on the product documentation.
• Created Services, AsyncTasks to perform update information check to avoid freezing the user interface
• Implemented Fragment retention for the AsyncTask operations.
• Worked with the design team and the usability specialist to design a user friendly interface for the app
• Mentored 3 junior programmers familiarizing them with our App structure and code.
• Added horizontally screening panes with ViewPagerIndicator
• Queried for requests utilizing HTTP and parsed JSON responses.
• Prototyped 2 candidate activities to facilitate decision making regarding features and flow to be implemented in the new module.
• Secured the information using SQLCipher, ProGuard and Spongy Castle encryption and obfuscation services.
• Designed and implemented Android application to product and UX specification.
• Detected new improvement opportunities and implemented them using Volley Library and persistent data
• Trained team members on new Marshmallow Runtime Permissions and lead implementation in new modules as well as retrofitting in legacy code.
• Designed the relational database model and set up the server
• Implemented a WebView control to reuse some legacy web application functionality within the native app.
• Created a user friendly reconfigurable interface for using custom themes.
• Integrated payment methods such as Android Pay, Visa API, MasterCard API.
• Enhanced the User Experience with the implementation of the Tab Navigation
• Diagnosed and fixed bugs that caused unintended product behavior.
• Worked with Struts for MVC and Hibernate as Object Relational Mapping.
• In charge of ensuring compliance with Material Design and material design technologies including widgets and libraries.
• Worked on implementing Social networks integration with the app

Frameworks used: SQLCipher, ProGuard, Spongy Castle, Google Maps, Picasso, Android M, AsyncTasks, Fragments, ViewPagerIndicator, JSON, HTTP, UI/UX, Volley, WebViews, Relational database, Android Pay, Visa API, MasterCard API, Tab Navigation, MVC, MVP, Hibernate, Material Design, Social networks.

Senior Android Developer

Confidential, Peoria, IL

Responsibilities:

• Used Volley for all web service request
• Implemented secure data encryption using an SQLCipher instance
• Supervised the implementation of the push notifications setting up the google developer account and creating the local key in the app base-code.
• Used Google Maps API and Google Location server to ping the coordinates of the user and get feedback with the application.
• Extensive use of heavy data workloads to show items in a ListView.
• Managed the build creation with a Jenkins instance hosted in a private server.
• Used Android Studio as IDE and all his capabilities: build Variants and social media plugins.
• Made use of communication between common data between apps over network requests using Retrofit
• Detected new features that could be implemented and did so
• Designed prototypes to create the new main flow of the application with JustinMind.
• Implemented headless fragment retention to preserve the AsyncTask on orientation change
• Attended Scrum meeting to keep track of the current sprint
• Resolved issues, fixed bugs and optimized the application.
• Conducted requirement gathering sessions and wrote the high level and detail design
• Created custom views in order to present data as it was needed
• Worked with GSON and Jackson library to parse JSON files.
• Wrote unit tests for the functionality of the application
• Worked extensively with fragments to improve the user navigation experience
• Ensure backward compatibility by using android support libraries

Frameworks used: Volley, SQLCipher, Google Maps API, ListView, Jenkins, Android Studio, buildVariants, Retrofit, JustinMind, AsyncTask, Scrum, GSON, Jackson, JSON, Unit testing, Fragments, Android Support Libraries, Custom Views.

Android Developer

Confidential, Washington, DC

Responsibilities:

• Identified bugs on the previous version improving the performance on the Android Lifecycle
• Used advance networking, multithreading and image loading libraries for efficient communication like Volley and Picasso.
• Improved the playlists by replacing implementing View Holder Pattern in ListViews.
• Design and develop functionality between user’s interaction and delegating it back to server using RESTful web services and JSON parsing.
• Implemented push notifications with Google Cloud Messaging.
• Joined a team of six developers
• Consumed web services using a traditional approach with no third party libraries involved
• Implemented multithreaded programming to better handle long running operations.
• Used fragment to support larger screen such as tablets and 6 inch phones.
• Included Flurry SDK for analytics proposes.
• Images display using the Picasso library
• Led multiple teams in every step of the software development life cycle.
• Created multiple versions of the app (free, trial and paid) with the use of flavors set up in the build.gradle file.
• Used fragments and tabs to improve the navigation user experience
• Worked in the new design, gave a new look and feel in the app, applying styles and themes.
• Road mapped deadlines/goals and tracked progress of the project.
• Generated documentation for detail design including wire-framing using JustInMind prototyping tool.
• Created all technical documentation related to this project.
• Utilized Jira as the issue tracking tool.
• Used Leak Canary in order to find memory leaks, optimize and improve the performance.
• Used an OkHttp client to retrieve non API resources in the Internet.

Frameworks used: Android Lifecycle, Volley, Picasso, ViewHolder pattern, ListViews, JSON, RESTful, GCM, Flurry, flavors, Fragments, Tabs, Jira, LeakCanary, OkHTTP. Software Development Lifecycle, Deadlines mapping, bugtracking.

Android Developer / Web Developer

Confidential

Responsibilities:

• Created Asynchronous operations using multiple strategies: AsyncTask, Handlers, Intent Services and Loaders.
• Added extra functionality to the app such as Comment and vote deals, share offers (directly from the app, notifications,
• Modified the SQLite table structure to include new reporting capabilities
• Turned technical specs into Android multi pane Activities created using Fragments for better form factor adaptability.
• Created compound and custom UI components to improve the user experience.
• Added services and AsyncTasks to download PDF files without freezing the UI
• Leaded of the team in charge of gathering the requirements from the customer
• Used injection dependencies: ButterKnife and android annotations
• Developed a customizable interface with multiple layouts and several compound views and custom views.
• Refactored code to change a previous MVC implementation to a MVP design pattern.
• Added Hugo support as a third party logging library to receive debugging information.
• Used the Dalvik Debug Monitor Server (DDMS) for debugging and testing
• Implemented the user interface by using Custom Views, ListView, Relative Layout, Linear Layout and Table Layout.
• Consumed web services with a Volley client to retrieve the information of customizable APIs
• Attended daily SCRUM meeting to track app development progress
• Acted as direct interface with client and participate in overall development activities including requirements elaboration, design and coding.
• Used Spongy Castle to encrypt sensible data.
• Translated designs and wireframes into high quality views and code.
• Joined a team of ten android java developers
• Used support libraries to ensure backward compatibility with older android versions.

Frameworks used: AsyncTasks, Notifications, SQLite, Panels, Activities, ButterKnife. MVC, MVP, DDMS, ListView, LinearLayouts, Custom Views, RelativeLayouts, TableLayouts, SCRUM, Spongy Castle, Support Libraries.

Software Developer

Confidential

Responsibilities:

• Created a new system to control de versions of different process as a precursor of Subversion.
• Performed requirement gathering sessions to clarify and start up with the development process.
• Maintained a standalone desktop application to manage digital documentation.
• Used Jira as a bug tracking and task delegating tool.
• Extended Java SE and Visual Basic applications that were used to manage small food business.
• Computer equipment installation, repair and maintenance.
• Worked with different teams and alone as well to reach deadlines.

Frameworks used: Java SE, Visual Basic, Subversion, Requirement gathering, Digital documentation, Jira, Software Development Lifecycle, Deadlines setup.