SUMMARY

• Skilled in requirement gathering and documentation; works well with stakeholders and team members.
• Troubleshooting back - end communications, in-app functionalities and 3rd party frameworks.
• Experience prototyping and profiling Android applications.
• Knowledgeable of Android development, Java and Object-Oriented Programming, along with Google Material Design Guidelines, Android Best Practices, and Android UI/UX implementation.
• Knowledgeable of architectural patterns and design patterns. Able to architect Android applications in MVC, MVP, and MVVM.
• Experienced team lead, mentoring Android developers, working with cross-functional teams, and off-site Android team members, and off-site cross-functional teams.
• Experience guiding teh Product team/Product Manager and teh QA team in Android quality and testing.
• Worked on Android projects maintaining high unit test coverage and working with continuous integration and automated testing in a test-driven development environment.
• Experience in Android app development working with Android SDK versions 5 and above.
• Use of continuous integration tools like Jenkins or Travis CI and automated testing frameworks such as Espresso.
• Comfortable working in an Agile Scrum environment, participating in or facilitating daily scrums, sprint planning, sprint retrospective and sprint backlog meetings.
• Follow development/design standards and best practices in Android.
• A sound understanding of HTTP and REST-style web services.
• Strong C/C++, Java and Android development experience
• Experience with embedded local storage solutions such as SQLite.
• Implementation of Material Design guidelines, Fragments, Layouts, Animations, Compound Views, Custom Views, ListView and RecyclerView in Android development.
• Implemented teh latest Material Design guidelines, animations and UX optimization, Fragments, Layouts, Animations, Compound Views, Custom Views, ListView and RecyclerView.
• Implemented teh RESTful data consumption using Retrofit with an OkHttp client, GSON and Jackson converters and a custom interceptor.

TECHNICAL SKILLS

Programming Languages: Java, Kotlin, C#, Shell, Bash, PHP, PL/ SQL, Perl, Ruby, Python

Integrated Development Environments: Eclipse, Android Studio, Firebase, NetBeans, IntelliJ

Databases: Oracle, MySQL, Firebase DB, PostgreSQL, MS SQL Server, RoomDB

Design Standards Material Design: Architecture/Design Patterns and Frameworks: MVP, MVC, MVVM, Abstract Factory, Builder, Decorator, Façade, Command, Observer, Singleton, Visitor, Proxy, Mockito

Misc Development Tools and Methods and Libraries: Test-Driven Development, Continuous Integration, JIRA, Confluence, Retrofit, Bitbucket, Atlassian Stack, Trello, Kanban, Slack, Agile/Scrum, Sprint Planning, Sprint Retrospective, Daily Scrum/Stand-Up, Scrum Master/Team Lead, Product Manager VersionOne, Room, Picasso, JetPack, OkHttp

Operating Systems: Linux, Mac OSX, Windows, Android OS Lollipop, Nougat, Marshmallow, Oreo

Web Service Communication: REST, SOAP, XML, JSON, GSON

Threading: Loopers, Loaders, AsyncTask, Intent Service, RxJava, Retrofit, Volley, EventBus

Media: Picasso, Fresco, Glide, VidEffects

Testing: Test-Driven Development, Unit Testing, Mockito, JUnit, LeakCanary, Crashlytics, MonkeyRunner, Espresso, Robotium, Roboelectric

Continuous Integration: Jenkins, Travis CI, Hudson, Circle-CI

Security: Certificate Pinning, KeyChain

Dependency Injection: IcePick, Dagger 1, Dagger 2Android Tools

Web Dev: jQuery, HTML, CSS, JavaScript, Google Web Toolkit, Knockout.js

PROFESSIONAL EXPERIENCE

Senior Android Mobile App Developer

Confidential, Atlanta, GA

Responsibilities:

• Teh architecture of teh fly Delta TEMPhas a hybrid between MVVM and MVP architectures depending on teh feature.
• Implemented several SQLite database migration.
• With every change teh DB version had to be compiled with a different Android project.
• Used Databinding and Rx Java to enable a reactive MVVM architecture dat provides a better user experience.
• Migrated multiple WebViews to native Layouts while having to reconcile teh different states teh UIs should present based on from where they were launched.
• Managed multiple different development environments, such as development, QA and release.
• Implemented multiple third-party libraries such as Dagger, RxJava, Retrofit, JUnit, Mockito and Picasso.
• User sensitive information had to be handled via a secured user session module.
• Worked creating different proof of concepts in service of teh planning to migrate to Kotlin.
• Monitored productive app crashes using project Omniture.
• Followed Scrum methodology and executed 2-week sprints and attended daily standups to report progress.
• Every second Tuesday participated in demo meeting, to showcase progress made.
• Teh team environment is made up of 8 teams with 2 Android developers in each.
• Collaborated with UI/UX designers and analyzed UI Mocks to ensure Material Design guidelines were followed.
• Owned teh Flight Details page translation from Web version to native Android UI M, including teh data itself.
• Attended Sprint grooming meetings during which backlog tasks were assessed and estimated.
• Actively participated in Scrum Poker Planning meetings where developer contributes to teh stories’ estimations.
• Jira is teh main tool used to track our backlog, issues and active sprints.
• Participated in companywide Kotlin learning sessions in order to start teh Java to Kotlin migration
• Implemented unit and instrumented tests with every story using JUnit, Mockito and PowerMock frameworks.
• Teh unit test creating is pretty straightforward with Mockito, however some utilities had to be tested using PowerMock due to their static nature.
• Collaborated continuously with Backend team to stay on top of changes they would introduce in order to prevent crashes and blockers with unimplemented endpoints.
• Attended end of teh sprint we had a retrospective meeting to discuss what went well and what we can improve.
• Attended sprint planning meeting to discuss teh tasks to work on teh next sprint.

Senior Android Mobile App Developer

Confidential, Pleasant Grove, UT

Responsibilities:

• dis Android app uses a modified MVVM architecture with a ViewModel inside every Activity and Fragment, creating a ViewModel for every single view.
• Dagger, Retrofit, Robolectric, Picasso are some of teh third part libraries used.
• Used Android Keychain to secure dis information.
• Teh app crashes were monitored by Google Crashlytics.
• Teh methodology used is Scrum and a sprint is held every 2 weeks.
• Teh Android team size varied from 3 to 5 Android developers.
• Teh designers followed teh material design guidelines, but there were some exceptions.
• Android Architecture Components are used to improve teh user experience and facilitate teh development work. dis includes LiveData, ViewModel, and Room as teh SQLite database to cache teh app data.
• Teh designers employed a strong iOS influence, so even in Android we had to customize teh UI using custom views.
• My main contributions were related to teh user’s bag, teh product catalog, promotions and teh user’s info like address, email address, phone number and payments with WorldPay
• Participated in Sprint backlog, Sprint Grooming, Sprint Planning, Sprint Retrospective and we did our Daily Standups using Slack.
• Initially used Workfront for task tracking and migrated task management to Jira.
• Worked with remote project off-shore in Ukraine, managing various work schedules and time zones.
• Participated in weekly Android team learning sessions to keep all team members up-to-date on teh latest changes in Android technology and discuss how they could benefit our app.
• Dagger 2 Dependency Injection was used to inject single instances of services dat many ViewModels needed.
• Used Robolectric to create unit tests as it fits more teh Android environment, being lifecycle aware.

Senior Android Mobile App Developer

Confidential, Mountain View, CA

Responsibilities:

• Implanted dis new Android mobile app in Android Studio coding with Java and utilizing 3rd party frameworks and libraries.
• Architected teh Android app on MVVM architectural pattern and utilized Singleton, Façade, Decorator, Visitor and Proxy design patterns.
• Consumed Web Services using a Retrofit instance with a built-in GSON converter to parse JSON objects using Google GSON.
• Implemented Android Support Libraries for backward compatibility.
• POC on Firebase Cloud Firestore and Firebase Cloud Functions beta.
• Enabled notifications with Google Cloud Messaging.
• Project utilized Agile Scrum project management methodology, and I participated in daily stand-ups and sprint meetings.
• For quality used Test-Driven Development and Continuous Integration with Firebase Test Lab.
• Implemented Okio and Java.io to process stored data.
• Used Firebase Performance Monitoring to monitor app performance.
• Implemented Firebase real-time database for storage and persistence during sync events.
• Collected user analytics data with MixPanel.
• Butter Knife used for dependency injection.
• Managed user image uploads and gallery using Glide.

Senior Android Mobile Application Engineer

Confidential, New York, NY

Responsibilities:

• Conducted requirement gathering sessions and wrote teh high level and detail design.
• Made use of Activities and Activities for Result and RecyclerViews in Android to get a better performance of teh application.
• Worked on teh Android Wear optimization to open new market possibilities.
• Consumed web services using Retrofit 2.4.0 and parsed JSON objects.
• Use of Android Implicit and Explicit Intents.
• Implemented Picasso for high resolution images in fashion ecommerce.
• Mentored junior developers on Android best practices.
• Developed graphic interface and UI for some activities in teh Android app.
• Collaborated with PayPal Android SDK for making payments.
• Worked with asynchronous requests to teh server with Retrofit library.
• Added Push Notification features in Android app with Google Cloud Messaging (GCM).
• Firebase real-time database formed teh storage.
• Implemented KeyStore for user sign-on and credential persistence.
• Used Butter Knife for dependency injection and MixPanel for analytics.
• Implemented Material Design feature of RecyclerView, toolbar, CardView
• Used Fabric Crashlytics for troubleshooting teh app performance issues.
• Implemented BarCode Reading with ZBar Bar Code Reader to enable users to scan prices in teh store.

Android Mobile Application Developer

Confidential, McLean, VA

Responsibilities:

• Implemented a SyncAdapter to generate an Observer pattern in teh User Interface with notification of changes.
• Teh Android mobile application was written natively with teh Android SDK, and it supports devices starting from KitKat. Used JIRA for project planning and bug tracking.
• Used Crashlytics for troubleshooting.
• Firebase Authentication for secure, native sign-on.
• Asynchronous communication with RxJava, Retrofit, OkHTTP, FasterXMLJackson, and parsed JSON objects with GSON.
• Developed custom and compound views to match UI/UX specifications.
• Migrated existing Android MVC design patterns to MVP design patterns.
• Imported Eclipse IDE project to a new Android Studio project.
• Conducted weekly SCRUM meetings to set up goals and halp developers meet deadlines for teh Android app project.
• Created custom animations and transitions to improve teh user experience.
• Prototyped activities to facilitate decision making regarding features and flow to be implemented in teh new module.
• Used Timber login library to create easy user login.
• Used MPAndroidChart to display credit information in graphic form.
• Implemented teh best practices for Android mobile development with their main components: Activities, Services, Content Providers.

Android Mobile Application Developer

Confidential, St. Louis, MO

Responsibilities:

• Applied understanding of teh Android SDK and Android devices.
• Attended teh SCRUM meeting to keep track of teh current sprint.
• Developed and expanded native Android mobile applications for Android platforms according to specifications handled by a design team or teh clients.
• Implemented dependency injection with Dagger 2.
• Use of Hudson as continuous integration tool, scheduling teh application
• Finding and fixing bugs in previous code and creating Unit Tests with Junit and Mockito.
• Consumed RESTful web services using Retrofit and RxJava.
• Used RxAndroid to safely update teh UI from worker threads.
• Used Urban Airship for Push Notifications to users of specials.
• Used Simple Login Façade for Java to create attractive user entrance.
• Android performance tuning and crash reporting applications.
• Experience working on-site and off-site teams and management.
• Used enhancement for multi-device compatibility.
• Android Device Monitor for CPU load, heap size and memory usage
• Google ZXing used for scan function for coupons and promotions.
• Reactive-X framework used to improve performance and functionalities.