SUMMARY

• 12+ years of experience in Android development.
• 6 apps published to Play Store.
• TEMPEffective working on Android development teams applying Agile/Scrum methodologies.
• Experienced working on Agile teams and applying Agile project methodologies wif Daily Scrums, Sprints, Sprint Planning, Sprint grooming, Sprint Retrospective, and Sprint Backlog.
• Hands on wif MVP, MVVM, and MVC architectures.
• Program in Kotlin and Java, wif experience converting Java programs to Kotlin.
• Experience wif frameworks RxJava, RxKotlin, RXBluetooth, and RxAndroid.
• Stay up to date on the ever - changing mobile and Android technology landscape.
• Knowledge and demonstrated skill applying Activities, Fragments, Custom Views, Services, Volley, Support library, and 3rd- party libraries.
• Fully conversant wif OOP principles, software development frameworks, and design patterns.
• Strong knowledge in Android multithreading frameworks: AsyncTaks, IntentServices, Handlers, Threads, Runnables, Loopers.
• Implement asynchronous services to update local storage and notify updates in the UI (Content Providers, Services, SyncAdapters, Loaders).
• Implement the RESTful data consumption using Retrofit wif an OkHttp client, GSON and Jackson converters and a custom interceptor.
• Experienced using the main ViewGroups provided by the Android SDK: FrameLayout, LinearLayout, RelativeLayout, CoordinatorLayout.
• Knowledge/experience applying dependency injection (DI) framework for Kotlin development.
• Dependency Injection wif Dagger 1, Dagger 2.
• Utilized Google Material Design for the user interface (UI)/user experience (UX) re-design of the apps look, feel, and functionality.
• Configured Charles Proxy for web debugging.
• Applied various project management tools such as Rally to track each phase of the development iterations and releases and map defects wif the user stories.
• Set up the development process for real-time data exchanges by deploying a Firebase platform.
• Hands-0n wif various JetPack components to make development and maintenance more efficient.
• Applied Android Studio as the primary IDE to develop, test and deploy Android applications.
• Used Bitbucket to manage Git repositories and versioning control.
• Optimized Android applications by implementing designs in high-performance frameworks and libraries.
• Improved application performance using Activities, Activities for Result and RecyclerViews.
• Adept wif Android performance tuning and crash reporting applications as well as use of Leak Canary, Firebase Crash Reporting, Crashlytics and various profiling tools.
• Implemented the Android application in MVP architectural pattern.
• Used design patterns: MVP, Factory, Singleton, and Decorator.
• Implemented automated testing wif Espresso and Mockito.
• Experience wif various APIs including Facebook, Twitter and YouTube
• Experience uploading apps on the Google Play Store.

TECHNICAL SKILLS

Languages: Java, Kotlin, C++, HTML, CSS, JavaScript, Scheme

Databases: Room, MySQL, SQLite, Firebase DB

IDE: Eclipse, Android Studio, IntelliJ

Multimedia: Glide, Picasso, ExoPlayer, Videoplayer

Development: JIRA, Continuous Integration, Git, GitHub, TDD, BDD, Kanban

Project Methodologies: Agile, Scrum, Waterfall

Android Dev: Espresso, Mockito, Moshi, Retrofit, JUnit, Glide, Loopers, Loaders, AsyncTask, RxJava, RxKotlin, RxBluetooth, RxAndroid, GSON, LiveData, MVVM, MVC, MVP, Room, Dagger 2, Jenkins, Android Profiler, Coroutines, Layouts, Google Architectural Components, EventBus, RecyclerView, Services, LiveData, Google Maps API, Mockito, Mitek, MiSnap SDK

PROFESSIONAL EXPERIENCE

Sr. Android Developer

Confidential, Redwood Shores, CA

Responsibilities:

• Worked on an Android team wif 6 iOS Developers, 4 Android Developers, 4 QA and 3 UI/UX designers in an Agile environment.
• Refactored code base from MVP to MVVM architecture.
• Contributed wif migration from Java to Kotlin JVM language.
• Worked closely wif backend developers to debug and create proper documentation in multiple endpoints.
• Refactored Retrofit network API to create a Singleton approach.
• Refactored callback strategy wif Lifecycle aware Observables to consolidate backend consumption.
• Utilized AndroidPlot API in different places to chart multiple data from server.
• Created multiple log process utilizing Logger API to easily identify investments flow as part of the application.
• Debugged code to support multiple screen sizes and created multiple layout qualifiers.
• Created CustomViews to reduce project overhead can increase reusability of code in multiple places.
• Created push notifications message from Firebase console and debugged message received from Firebase console.
• Created cache strategy TEMPhas part of the retrofit client.
• Utilized Charles Proxy for increase the performance in the consumption of network endpoints.
• Collaborated wif login feature to implement different sign in options utilizing fingerprint device feature.
• Assisted web wif automatic/ manual QA, and helped QA write Cucumber/ Ruby tests for web as well as for Android.
• Debugged using Logcat/ DDMS, crash reports wif Crashlytics, and network issues wif Charles Proxy/ Splunk.
• Utilized GSON Convertor Factory to parse JSON object in web services consumption and used Retrofit and RxJava for essential framework to provide asynchronous communication wif back-end services.

Sr. Android Developer

Confidential, San Francisco, CA

Responsibilities:

• Worked wif other developers to write software based on backlog items.
• Worked wif testers to ensure they are engaged and ready to test the software at the right time in the development cycle.
• Supported, refactored, and enhanced existing production systems.
• Organized business logic, workflows, processes, rules in Domain layer and communicated wif data/ presentation layer in MVP architecture.
• Integrated OAuth2 autantication wif Identity Server.
• Enhanced the module dat communicates wif the Java WebServices wif Volley library.
• Collected customer data and send it to your tools for mobile analytics, marketing automation, and raw data access wif SQL using Segment SDK.
• Replaced Samsung Pay wif card.io library for credit card scanning and BrainTree SDK.
• Used GitFlow for code integration.
• Utilized Jenkins for continuous integration.
• Applied JIRA for bug tracking.
• Worked on Schedule Deliveries’ and Real Time tracking’ acceptance criteria’s in TDD manner.
• Wrote automated UI test cases using Espresso and Mockito and functional integration testing using Robolectric API.
• Performed additional beta testing using Google Cloud testing mechanism.
• Encrypted card details in Android Keystore system to store cryptographic keys in a container to make it more difficult to extract from the device.

Android Developer

Confidential, Redwood City, CA

Responsibilities:

• Design main app screen using material design principles using coordinator layout, Recyclerview, collapsable toolbar and bottom-up sheets to display trendy fashion, shoes, beauty, jewelry, watches and accessories. Worked in a medium size team, following an Agile like methodology, and apply Pair-programming. For CI/CD we used Jenkins CI and data repository wif SVN.
• Integrate Snap Creative Kit SDK to let users send photos or videos to the Snapchat camera preview and use Snapchat tools .
• Work on Braintree Client wif Encryption Library to securely collect payment information from customers and customize checkout experience.
• Pair-program to integrate Mitek MiSnap to capture ID documents like passports, id cards, etc. to verify users' identities.
• Perform vital task like HTTP transport, error handling, autantication, JSON parsing and media download/upload using Google GData client Java library.
• Use SignPost oAuth library to sign HTTP messages and request tokens from an OAuth service provider.
• Create modules, components and custom scopes using Dagger2 and perform loose coupling.
• Write code on network module to implement Okhttp caching mechanism and use Mockserver to mock API responses.
• Validate asynchronous operations whose results effect subsequent operations in a UI test using Idling Resource Espresso.
• Work existing Clean code architecture in MVP and create shopping module, add to basket module and customer profile module.
• Provide backwards-compatible notification API wif Wear and Auto support, media playback and routing.
• Develop Compatibility APIs for checking and requesting permissions in app

Android Developer

Confidential, Seattle, WA

Responsibilities:

• me worked on an Android team consisting of 5 developers working wifin an Agile project methodolgy. Hands-on technical work highlights:
• Customized Home Filters to enable search by price, property type, and desired features.
• Configured app to enable users to save favorite homes and property searches to their Confidential account.
• Configured app to get directions and alert a user to attend every open house in user’s area.
• Utilized Facebook Stetho, Charles Proxy API, Memory profiler, HierarchyViewer and Android Profiler to identify issues and enhance the performance.
• Configured MixPanel API to send instant notifications when a new home hits the market and push notifications for any house, condo, or townhome dat meets search criteria.
• Created bound service to send requests, receive results, and even do so across processes wif interprocess communication (IPC).
• Created a custom transition animation and applied one or more animation TEMPeffects to all of the views in a view hierarchy.
• Coded the algorithm necessary to properly structure the query for the request needed to implement the “Filtered Search” feature.
• Migrated from AsyncTasks and IntentServices-based components to a reactive paradigm wif RxJava concurrency modelling.
• Included Android-Job utility library to run jobs delayed in the background by creating JobRequest wif the corresponding builder class and scheduled this request wif the JobManager.
• Communicated wif Calendar AP and content providers to read calendar events plus confidential information, read contacts, read web bookmarks, and history.
• Refined and improved performance of the app using SonarCube, Network profiler, CPU, and battery profilers.
• Developed update patches, modules, and components to mitigate security risks.
• Worked wif other developers, designers, and product/business managers to develop new features consistent wif product roadmap.
• Created frameworks and automation in the development process to maximize build efficiency and secure solid code.
• Maintained the Session Management for the app and supporting screen orientations.

Android Engineer

Confidential - Newark, NJ

Responsibilities:

• Coordinated wif Sr. Developer on Apache Commons Codec software for implementations of common encoders and decoders such as Base64, Hex, Phonetic and URLs
• In corporate StickyListHeaders library to integrate section headers in ListView.
• Worked on Apache HttpMime API module to support MIME multipart encoded entities.
• Provided development support to the core team, troubleshooting some complex iOS / AIR / Android camera extension debugging for a specific project on a short-term basis.
• Coded to implement the Observer pattern, the Iterator pattern, and functional programming
• Used Git for source management
• Used OkHttp for exchange data & media through HTTP protocol.
• Worked wif EventBus library for simplifies communication between Activities, Fragments, Thread, Services, etc.

Android Developer

Confidential, Goodlettsville, NY

Responsibilities:

• Refactored unorganized spaghetti codebase into MVC architecture following SOLID principles.
• Communicated wif backend server using Volley and make multiple concurrent network connections wif support for request prioritization.
• Defined deep links wif account details and third-party implementation.
• Made a distinction between development and production versions of the app each wif their distinct credentials and settings in the backend using Urban Airship.
• Fixed memory leaks and configured data offline usage, push notifications, content providers, multiple form factors, accounts, and sync on Android.
• Decreased memory leak by 90% using AsyncTaskLoaders, weak References and LeakCanary tool.
• Implemented Cart Calculator algorithm to abstract all the logic of network retrials, error handling and callbacks optimization using queues to avoid directly calling API endpoints from the activities.
• Increased security in local SQLite databases wif SQLCipher encryption and decryption.
• Created navigation and refactoring static fragments wif Fragment Transaction and handling the backstack for a better experience.
• Resolved intra-library dependencies and replaced the standard System.loadLibrary call using ReLinker library.
• Used Android content providers for implementing features like sending E-mails, sharing using Facebook, Email, Twitter, SMS, etc., from the app.
• Used the SQLiteOpenHelper to connect wif the local database and perform CRUD operations.
• Coded Custom Views and animations as per iOS app prototype and implement Android components to specifications.
• Performed bug fixing from the tickets assigned in JIRA and worked independently on most features, reporting to the team leader daily.