Profile of Manuel Rojas

Manuel Rojas Software Developer Android / C# .NET
0 years experience 0 projects worked Costa Rica
20.00$ /hr 0$ earned
.NET FrameworkAndroid App DevelopmentAndroid SDKC#JavaKotlinRESTful

I have a Bachelor’s degree in Computer Sciences and more than 7 years hands-on overall experience using Android, Java, .NET, Dynamics NAV to design and implement software applications.

I have been working remotely for Erp Development AS since last 7 years, and I have successfully performed as an Android developer for about 3-4 years. I’m proficient with hands-on experience in Android Studio, Android SDK, APIs, 3rd party libraries, and other required tools that make part of the Android ecosystem. I focus my attention into Android development best practices, CLEAN architecture, SOLID principles, and UI Material Design guidelines to deliver a high quality product and code that is maintainable, testable, and scalable over time.

I’ve also contributed to the development and maintenance of C# ASP .NET Web applications, WCF, SOAP, and Restful services as well as Microsoft Dynamics NAV implementations. I’ve deployed web services on IIS, implemented windows self-hosted services, using SSL certificates for HTTPS.

Java Web development is also part of my professional background, using standard technologies like JSP, Servlets, Struts, Javascript, XML, CSS.

Other technical Skills: Clean Architecture, Design Patterns (MVVM, MVP, MVC, Repository), Android Architecture Components (ViewModel, Livedata, Room. Navgation),  JUnit, Mockito, Git, Github, Scrum, Web services REST/SOAP, Postman. SOAPUI, SQL Server, IIS, Javascript, Jquery, HTML5

Work History (0)

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Work Experiences

  • Java Front-End Developer

    Tek-know Solutions

    2012-01 - 2012-09

    Development of Fron-end side for Java Web applications. Some of the projects developed:
    • Bancaribe Web: online banking application for internal use on Bancaribe. Technologies used: Java EE, Jsp, Struts, Javascript, Html, Ajax, Xml, SOAP web services, JUnit

  • Freelance Developer Android / C# .NET / MS Dynamics NAV

    Erp Development AS

    2012-09 - Now

    Design, implementation, and deployment of native Android apps.
    Development of C# .NET WCF and Restful web services, support on ASP .NET web applications.
    Development and support on MS Dynamics NAV applications and web services.
    Some of the projects I\’ve been part of:
    • VBVMI: Android app for biblical religious teaching, featuring a content of audio and text lessons that can be played, read, and downloaded. Content can be accessed both online and offline mode and can be shared on social networks. Technologies used: Java, Android SDK, SQLite, REST services. The app was developed using GitHub as repository hosting service.
    • Inventory++: Android app for business management, leveraging a built-in 1D laser scanning mobile device for barcode reading. It supports Sales, Purchase, and Inventory Count Management, integrating with a backend system developed on Microsoft Dynamics NAV. Request/Response xml files are synced on an FTP server on real-time. Technologies used: Java, Android SDK, SQLite, custom FTP client, REST services, MS Dynamics NAV.
    • CR Support Website: development and support of CR Technical Support website for SI-DATA. Create, consult and modify cases and reports. Technologies used: C#, ASP .NET, Webforms, ADO .NET, Javascript, HTML, WCF services, MS SQL server.
    • Kellox/Loxkell WS: Development of web services in Microsoft Dynamics NAV 2009. Data exposed in XML format. The WS is deployed through a proxy service developed in WCF .NET (hosted as a Windows Service). Development of Dataports and Codeunits to import/export data, implementing CRUD operations on database level. Installation and configuration of development environment (NAV server, C/SIDE, NAS, MS SQL Server, Web service)


  • Bachelor of Computer Sciences

    Central University of Venezuela

    2008-07 - 2018-09