SUMMARY:

• 7 years’ experience in Java, standard industry design patterns, and Object - Oriented Programming
• Experience in optimizing performance and memory usage of Android Apps
• Experience with multi-threading, integration with REST and SOAP APIs, custom view animations and transitions, and producing reusable libraries
• Strong knowledge of Android SDK, core java different versions of Android, and how to deal with different screen sizes
• Familiar with working on geo-fencing, google map integration, background, foreground services
• Proficient in designing, wireframing, and implementing UI/UX
• Offshore/Remote team collaboration and management experience
• Mentoring Jr developers by analyzing code via code request to ensure best practice been followed
• Experience with the entire Software Development Lifecycle conducting and implementing applications from conceptualization to publish apps

KEY SKILLS:

MVP/MVVM/Singleton/Builder/Fa ade Architectures

Glide/Picasso/ExoPlayer/VideoPlayer

Testing/TDD/BDD/Code reviews/Junit/Espresso/Mockito/Powermock

Activities/Content Providers/Services/Broadcast Receivers

Certificate pinning/Android Keystore/Cipher/AES/RSA

Kotlin/Data Classes/Sealed Classes/Extension Functions/Coroutines

Retrofit/RxJava/GSON/Json/Moshi/Http URL Connection

SQLite/Room/MySQL/SharedPreferences/File Provider

Firebase/AWS/Push Notifications/BLE

Jira/Jenkins/Bitbucket/Git/Git lab

WORK EXPERIENCE:

Confidential, Boston, MA

Sr.Android Developer

Responsibilities:

• Worked in an Agile environment with 5 Android developers, QA testers, UI/UX designers and backend developers.
• Run meetings with product owners and scrum masters on a daily standup meeting.
• Collaborated with deep link integration across multiple functionalities inside the application.
• Tokenize authentication has part of the Launch Meetings conference feature.
• Closely collaborated with backend developers to integrate security measure with deep link interactions.
• Created Sequential Diagrams has part of documentation to clearly visualize the stages of the application.
• Updated onboarding documents for KT effort exemplifying Android deep link process.
• Participated in PR approval team, enforcing a code coverage around 80% for the Android App.
• Working closely with dev piers to follow SOLID principles and utilized tools like Jacoco to keep track on code coverage.
• Implemented material design components and debug and track with UI/UX designers to implement pixel perfection layouts.
• Worked with QA developers and implement Apache Server to execute extensive automation test.
• Liaise has a point of contact to the offshore teams, tackle blockers in every sprint cycle and resolve communication barriers with non-technical colleagues.
• Worked with testing libraries and frameworks: Junit, Espresso, Mockito, Robolectric
• Refactored code base to make use of observable design pattern.
• Implemented Google Archictecture Design patterns with MVVM + repository layer.
• Utilized state-of-the-art technologies like Lifecycle components ViewModel and LiveData.

Confidential, Boston, MA

Sr.Android Developer

Responsibilities:

• Worked in an Agile environment with a crossover team including iOS developers, Android developers, QA testers, UI/UX designers and backend developers
• Implemented custom SDK to perform VoIP using android call application
• Actively participated in daily scrums meeting behaving has a point of contacts with offshore teams to clarify milestones and increase efficiency on pending work
• Executed meetings with UI/UX to clarify uses cases on rebranding effort and translate requirements to technical efforts
• Enforced UI interactions to follow Android Material Design and apply best practices
• Establish process and standards for code deployment and test coverage, applied Bambu scripts to automated builds with multiple test cases
• Created custom views to be incorporated across multiple features in the project
• Developed Settings Feature to incorporated Navigation Drawer component along with fragments to define user interaction and customize application configurations
• Debugged closely with backend teams an issue when app settings weren’t reflected trough middleware endpoint
• Implemented Observable pattern to reduce application memory consumption and facilitate readability decoupling app modules
• Worked on a MVVM Architecture Design pattern using observables and data binding connections between modules
• Created Repository pattern to abstract connections between local databases and remote endpoints
• Refactored Java code with Kotlin implementations like companion objects and Singleton objects
• Interacted with default Content Providers as Contacts Providers to facilitate user interaction with local user contacts
• Created Searchable Activities to efficiently utilize contacts locally in user device
• Worked on prove of concept to incorporated previous and favorite contacts navigation
• Implemented Coroutines to asynchronously fetch new Contacts Mobile data, which will contain new features from backend endpoints
• Created easy to identify status bar with the last updated date and time to the messages and also incorporating call history screens according to specs
• Accomplished several unit test cases along the application using jUnit and Hamcrest assertions, created mocks and verifications of classes and interfaces
• Consolidated Instrumented Test cases with QA tester to closely executed inside of the application using Espresso and Roboelectric tools

Confidential, San Francisco, CA

Sr. Android Developer

Responsibilities:

• Refactored several callbacks implementation from old MVP design pattern to excel the use of RxJava schedulers
• Participated on Architecture Design Pattern migration from MVP to MVVM, reducing and consolidating code to make use of Android Ktx plugin
• Reduced learning curve on Kotlin language by creating multiple training materials and balance current sprint work with mentoring developers’ piers
• Worked on a distributed version control system and handled branching strategy to effectible track working effort and increase production during the sprint cycle
• Collaborated on a Agile methodology with 2 weeks of sprint cycle and 1 week of retrospective
• Helped to create scripts on groovy language to be possible to execute in CI/CD tools like Jenkins
• Participated in reviewal team to monitor smells and code quality along with the enforcement of code coverage using Jacoco tool
• Integrated push notifications messages with cloud tool Firebase to populate new updates on schedules for ShiftPlanning feature
• Debugging push notifications on ShiftPlanning feature that forbids user to properly see updates from managers accepting the new schedule using DebugView events
• Created abstract classes to define common behavior across the application and utilizing extension function from Ktx plugin we consolidate common operations like getCurrentTime and parseDate
• Constructed several custom views to reduce the burden of multiple fragments across the application
• Helped to generate the object graph and elaborating @Binds, @BindsInstance, @Providers, @Scopes and @Components
• Debugged missing bindings on dependency injection tool and track properly solutions to inject constructors
• Participated in pair programming to reduce learning curve on new Kotlin language implementation
• Elaborated pull request that reflects sprint effort in Jira bug tracking system

Confidential, Santa Monica, CA

Sr. Android Developer

Responsibilities:

• Worked on an Agile environment with 5 Android developers and interacted with backend developers
• Created pull request that matches expected quality code that follows SOLID principles
• Helped other developers to decompose and refactored code to follow SOLID principles patterns
• Worked with new ConstraintLayout to positioned elements accordingly to design, and created chains and guidelines to make the application more appealing
• Integrated search patterns and search activity interaction inside the application
• Debugged network calls to reflect correct consumption of data using Postman, Swagger and Charles Proxy API
• Refactored networking calls using Retrofit Api to enqueue and reflect changes from a worker thread into the main thread
• Implemented Certificate pinning to mask endpoint calls during login feature procedure
• Collaborated on ItemsCart feature to selectable collect items from user preference to prepare payment process one and initialize purchase process
• Closely debug with UI designers to achieve pixel perfect layout on list of views using Recyclerview with customize Item Separators
• Implemented abstract view holder pattern to support headers and multiple layouts in RecyclerView
• Elaborated comparable algorithm according to design to simplified choose elements and facilitate decision from user
• Implemented customize fast scrolling with custom drawables and fastScrollEnabled property
• Participated on branding implementation to create a more appealing layouts and define new acquisition strategy inside the application
• Integrated Exoplayer with a customized layout to help users to identify products with videos where applicable
• Created background operations with Android JetPack components WorkManager to in a period of time check updates on items
• Worked on a TDD methodology applying Red-Green-Refactor to increase code stability using multiple tools like jUnit, Mockito and PowerMock
• Worked with the implementation of federated login like Google Sign-in capabilities to give more options to interact with the application

Confidential, Austin, TX

Sr. Android Developer

Responsibilities:

• Code user story ‘Browse weekly sales at favorite location to find the latest deals on the products’ completely from scratch
• Designed alternative UI and improved payments options for prime members product flavor
• Browse weekly sales at your favorite location to find the latest deals on the products
• In corporate Crittercism library and Google Analytics to send real-time, actionable crash reports and collect user engagement data to the backend
• Implement Amazon In-App Purchasing API to enable purchase digital content and subscriptions for purchase within apps on Amazon Appstore
• Refactored legacy codebase, architected the project using MVP and widely applied code reusability using dependency injection libraries (Dagger2, Butterknife)
• Use Android Studio, Java, AsyncTasks, Google Maps, RESTful, JSON, SQLite, Servlets, Tomcat, MySQL, SVN, 9Patch
• Generate a downstream logic to communicate the servers with the phones using Google Cloud Messaging (GCM)
• Closely work with the testing team and used developer testing tools like Robolectric
• Implement Recyclerview-animator’s library to increase the attention of the user and easily implement multiple animations across the project
• Communicate with Amazon Web Services (AWS) for secure cloud services platform, database storage and content delivery using IntentServices and AlarmManager API
• Check Android quality control using PMD, Findbugs, Checkstyle, Gradle and Jenkins reports
• Take ownership of and address tickets raised by QA, UAT from Jira
• Participate in an agile technical team across UI, Front End and Back End responsibilities

Confidential, Glen Allen, VA

Android Developer

Responsibilities:

• Save search and get email updates when new jobs are posted that match in search
• Consumed web services with a Volley client to support for request prioritization and strong ordering that makes it easy to correctly populate your UI with data fetched asynchronously from the network
• Search for local job openings and have Daily Job Matches sent directly to user phone
• View job application status updates on jobs that user have applied to
• Included Moshi library for built-in support for reading and writing Java’s core data types
• Apply to jobs with just one click by using Confidential profile
• Perform 80% integration testing using Robolectric framework
• Improved user interface by adding AndroidSlidingUpPanel component foe draggable sliding up panel and circular ImageView in list view
• Find jobs hiring in user area using map search feature
• Created a Confidential Widget on home screen to show the latest offers according to users’ geo-location
• Incorporated contacts, calendar, gallery device specific content-providers and build custom content providers to share data across processes
• Replaced old SQLIte database with Realm to include difficult-to-build features like two-way data sync, realtime collaboration, persist with lightweight transactions and query using fluent interfaces
• Modularized the code by using Dagger 2 dependency injection library to decouple the classes, to make the code easier to test and maintain with no hard dependencies
• Implemented Bolts Framework to perform branching, parallelism, and complex error handling, without the spaghetti code of having many named callbacks