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Cristian Luis Duarte, Software Developer in Buenos Aires, Argentina
Cristian Luis Duarte

Software Developer in Buenos Aires, Argentina

Member since May 23, 2016
Cristian is a systems engineer who has graduated from the National Technological University in Buenos Aires. He has experience in many aspects of software development from desktop, server-side to web, and Android mobile development. In addition, he has great soft skills like coaching, recruiting, and leading IT teams.
Cristian is now available for hire
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Portfolio

Experience

Location

Buenos Aires, Argentina

Availability

Part-time

Preferred Environment

Bash, MacOS, Eclipse, Git, Android Studio

The most amazing...

...thing I've coded is an animated GIF decoder following exact specifications.

Employment

  • Android Engineer

    2019 - 2020
    Latch (via Toptal)
    • Improved the visualization of doors, following the group's design.
    • Changed the UI in regards to Bluetooth and location status.
    • Improved startup times by profiling and using lazy techniques.
    • Reduced costly back-end calls.
    • Followed a TDD approach for every new feature while adding automated tests to existing features.
    Technologies: JUnit, Java, Kotlin, Android

  • Android Engineer

    2017 - 2019
    High Fidelity, Inc.
    • Ported the open-source VR platform (High Fidelity, Highfidelity.com) to Android.
    • Added High Fidelity social features into the Android version.
    • Made it possible to run the Open GL ES app in both Adreno and Mali GPUs.
    • Ported new features from Desktop to Android: Jump, Places list, Show avatar name in 3D.
    • Developed on-screen gamepad for the in-world view, focused on smooth responsiveness.
    • Implemented features to make it Google Daydream compliant: recentering, teleporting and walking.
    Technologies: Qt, CMake, JavaScript, Java, C++, Google Daydream, Android

  • Android Engineer

    2016 - 2017
    Futurewei Technologies Inc.
    • Ported the open source VR platform (High Fidelity, Highfidelity.com) to Android using the NDK.
    • Adapted the graphics back-end engine to Open GL ES 3.
    • Integrated Google Daydream SDK to be able to interact with Daydream compatible smartphones using Daydream View (headset) and the controller.
    • Adapted the toolchain so it used the proper C++ Clang compiler and GNU STL.
    • Solved audio communication stability issues (some devices closed IO objects and a restarting mechanism was implemented).
    Technologies: Qt, CMake, JavaScript, Java, C++, Google Daydream, Android

  • Android Software Engineer

    2016 - 2016
    Ginger.io (via Toptal)
    • Implemented the chat functionality in native Android code reviewing the current WebView version and applying design to get a fresh native UI.
    • Made it possible to use the chat while being offline. Cached messages in a local SQLite database, synchronized data, and optimized data usage by using existing data.
    • Polished the application by applying animations, unread messages indicators, and postponing data retrieval to quickly show screens.
    Technologies: PubNub, SQL, Java, Android

  • Lead Software Engineer

    2011 - 2016
    Mobaires SRL
    • Created Dasher Messenger from scratch—a messaging app for Android. Incorporated features like GIFs, location sharing, and payments through Venmo; the server-side was provided by the client.
    • Implemented the multiplatform motels guide iTelo for Android, Blackberry, and Nokia (Java phones).
    • Coached Android and Java developers and led the development process, giving visibility to clients as well.
    • Developed the OS X Agent for Pie Digital Software. Involved agents and daemons development, installers scripting and creation of Cocoa helper tools apps.
    • Implemented an insurance agent's tool for Android that provided location tracking, car problems marking and messaging from HQ.
    • Made a version of "This Day in History" (from the History Channel) for the Android Samsung Apps store.
    Technologies: Amazon Web Services (AWS), SQL, PHP, OS X, Java ME, Android, Java

  • Semi Senior Development Analyst

    2007 - 2011
    MercadoLibre
    • Created a job to migrate user-related data to secure tables (encrypted columns).
    • Coded the back end for MercadoClics, the MercadoLibre in-site advertising project. Including links generation, clicks, impressions counting, ads selection algorithms, and charges generation.
    • Made use of his seniority, took the role of coach as well, assisted other members of his teams.
    • Ensured MercadoLibre security, made pages secure through SSL and implemented a new login page.
    • Updated MercadoClics.
    • Coached other developers.
    • Implemented new ads positions and user dashboards.
    • Implemented, as a member of the customer service development team, web tools based on Force.com to provide services for customer representatives.
    Technologies: HTML, PL/SQL, Oracle, Servlet, Java

  • Java Developer

    2007 - 2007
    VISA Argentina (via FirstSystems Consulting)
    • Supported an internal product for corporate accounts management; mostly involving web development.
    • Maintained the existing implementation of 3D-Secure (named Verified by Visa) with fixes in corner cases.
    • Implemented a logistics-oriented version of the system applying specific functions like expenses category management, reports and security features such as login, CAPTCHA, and blocked accounts.
    Technologies: XLST, HTML, Java EE, Servlet, Java

  • Java Developer

    2006 - 2007
    Intelap
    • Maintained the finance, stock, and purchasing modules of the proprietary ERP System.
    • Implemented reports generation for different business needs.
    • Made a scheduled jobs for different reporting goals, like daily sales reports and stock quantities alarms.
    Technologies: JasperReports, SQL, AWT, Swing, Enterprise Java Beans (EJB), Java

Experience

  • High Fidelity | Live VR Experiences

    With High Fidelity’s mobile app, you can join real, live experiences with other people in virtual spaces right from your phone.

    As an Android engineer, I worked on this Google Daydream-compatible app; specifically on a port that allows entering the same worlds accessible from the desktop (and Oculus or Vive) but from Android devices.

  • Dasher Messenger

    A messaging app for Android that includes cool features like GIFs, location sharing, payments, and pools in group chats. There are versions for iOS and the web.

  • iTelo

    A motel guide with photos gallery, location, prices, and discount coupons.

Skills

  • Languages

    Java, SQL, JavaScript, Bash, HTML, XLST, C++, HTML5, PHP, Bash Script, CSS, Kotlin

  • Libraries/APIs

    Android API, Firebase Android SDK, AWT, JasperReports, PubNub, Facebook SDK

  • Tools

    Android Studio, Eclipse IDE, Git, Servlet, CMake, GitHub

  • Platforms

    Android, Google Daydream, Eclipse, MacOS, Oracle, Java EE, Java ME, OS X, Amazon Web Services (AWS), Firebase

  • Paradigms

    REST, Scrum, Design Patterns

  • Frameworks

    Swing, Qt, JUnit, Symfony 2

  • Storage

    PL/SQL, MySQL, Redis

  • Other

    Enterprise Java Beans (EJB)

Education

  • Bachelor's Degree in Information Systems Engineering
    2004 - 2008
    National Technological University - Buenos Aires, Argentina

Certifications

  • Associate Android Developer
    JUNE 2019 - JUNE 2022
    Google Developers

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