Responsibilities & achievements

● Refactored old implementation of SQLite, with abstractions to decouple concrete classes from client code. ● Implemented a service class using a singleton pattern for one instance in the app for SQLite connection. ● Performed unit testing using triple A pattern and NUnit and Moq. ● Created a Java binding library to expose Zebra native SDK for Android into Xamarin Android. ● Worked on bug fixes and maintenance tasks on a daily basis. ● Refactored and refreshed the user interface following up the UI/UX specifications. ● Evaluated the current business requirements and headed the design of 6 more apps. ● Developed all apps for regular and rugged devices and their respective SDKs. ● Collaborated with a team to structure a solid and shareable base code across multiple applications. ● Followed company code and security standards plus the recommended ones in best practices. ● Integrated a Git Flow strategy on the code repository. ● Established various design patterns including MVVM as a base pattern. ● Migrate Xamarin Forms Application to .NET MAUI development environment. ● Identified and implemented Printers and handheld Scanners with the apps. (Bluetooth, custom libraries)

Responsibilities & achievements

● Involved on weekly meeting with business to collect requirements and define user stories. ● Set the cross-platform architecture of the mobile app using MVVM architecture applying SOLID principles. ● Implemented across the entire app custom renderer with custom bindings. ● Displayed dynamic markers on the map for iOS and Android using Mapkit and Google Maps. ● Implemented Xamarin Essentials for getting current device location. ● Implemented Scanner services for Android and iOS devices. ● Used Dependency Injection for decoupling plugin and easy maintenance and scalability. ● Implemented REST API client using IoC for architecture independence from the concrete implementations. ● Used XAML matching UI/UX designs and considering performance and screen adaptability. ● Implemented Firebase for push notifications on iOS and Android.

Responsibilities & achievements

● Developed payments for the Auto-Pay feature where users can enable it and manage their debit/credit cards. ● Implemented user interfaces across platforms using XAML, Storyboards, XIB, and XML. ● Followed Solid Principles and development best practices for code reuse, maintainability, and scalability. ● Participated in code reviews and build processes using GitLab. ● Integrated accessibility for all modules of the app using Xamarin Forms and platform-specific SDK. ● Created unit tests for validating different scenarios using mock data and xUnit. ● Refactored and migrated legacy code using REST to Graphql using dependency injection and adapter design patterns.

Responsibilities & achievements

● Part of the team that started the first POC of the app using Xamarin Forms and MvvmCross. ● Designed and Implemented code standards and code review procedures for the project using the App Center and Azure DevOps. ● Built a proof-of-concept app in Xamarin with barcode-reading features ● Worked with Microsoft DevOps to control the project's progress. ● Utilized Microsoft Teams to coordinate the team efforts during current lockdowns. ● Built new custom and compound views for the UI/UX to include tablets. ● Executed test cases validating UI interaction and feature integration using App Center and UI Test. ● Developed a set of services using IoC to define the initial architecture for user data and products. ● Implemented dependency injection for decoupling platform-specific features such as camera, GPS, and SQLite. ● Managed certificates and configurations for app development (App Connect & Google Console).

Responsibilities & achievements

● Created an in-house Android app for sales and information management with Xamarin Native. ● Worked closely with the product owners to determine the minimum viable product. ● Combined multiple native Layouts for better multiform form factor displays. ● Created a custom Chatbot with IBM Watson assistant to improve the sales point module. ● Used Entity Framework, code-first to update existing databases and models. ● Integrated Google Charts API to present the results from the surveys. ● Used Azure as a hosting mechanism for public web services through web apps and Azure functions. ● Mentored various Mid-Level and Junior developers in standards and best practices. ● Automated business processes using Azure such as Azure functions, Azure AD, and security vaults. ● Configured multiple Unit and Integration Tests with Postman. ● Implemented SQL Server SSRS to show some analytics from the Quality Assurance Area. ● Wrote technical documentation and user manual for easy training. ● Created a REST API to extract data from SQL Server ● Built ASP.Net solutions with JavaScript, jQuery, and HTML with custom UI ● Used MVC architecture to build internal web applications. ● Included Bootstrap and UI Fabric for responsive design web application