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Benjamin Mayrargue

Benjamin Mayrargue

Paris, France
Member since August 9, 2013
Benjamin is a seasoned app developer and entrepreneur. He has worked with three startups as CTO and with one as managing director. He excels at both managing groups of developers and at working on solo projects.
Benjamin is now available for hire
  • C#, 13 years
  • Xamarin, 4 years
  • Android, 4 years
  • iOS, 4 years
Paris, France
Preferred Environment
Microsoft Visual Studio
The most amazing...
...thing I've created is Shapr, a professional networking app on iOS/Android.
  • Full-stack Developer
    2016 - 2016
    • Upgraded the installer I created 3 years ago for the company.
    Technologies: WPF JSON
  • Consulting Developer and Teacher
    2015 - 2016
    • Kickstarted the project and taught the 2 new developers.
    • Built the Google Maps search screens on iOS/Android.
    Technologies: Xamarin C#
  • Lead Developer and Architect
    2014 - 2016
    • Created the first and the following 2 major versions of this app.
    Technologies: Xamarin C# Android iOS
  • Teacher
    2012 - 2016
    • Taught lessons in a variety of subjects, including Active Directory, T-SQL, ASP.NET MVC, C#, Microsoft SQL Server Reporting Services, Microsoft Dynamics CRM, Windows Server, Microsoft IIS, Windows Remote Desktop Services, Windows Cluster Services, and Microsoft Exchange Server.
    Technologies: SQL, C#, ASP.NET MVC, Android
  • Software Expert
    2013 - 2013
    • Wrote a modern installer for a retail pack of external software.
    • Created a Wix-based installer with user login and API calls to get software keys.
    • Wrote a WPF for Windows XP and all Windows versions.
    • Wrote asynchronous code to find out when external installers end and reboot.
    • Created WPF animations for a great UI.
    Technologies: C#, WPF, Wix
  • CTO
    2013 - 2013
    • Developed a one-page web-shop with no registration required.
    • Created a full Android app.
    • Wrote an internal social engine with features including friends, shares, and walls.
    • Read and wrote NFC tags.
    • Created a multilingual web app.
    Technologies: C#, HTML5, CSS3
  • CTO
    2010 - 2013
    • Created a real-time gaming website using WebSockets for real-time interaction.
    • Developed a framework over MVC to correctly log and filter all production errors and suspicious activity.
    • Created a universal pluggable payment system including plugins for payment providers.
    • Wrote business intelligence reports with SQL Server reporting services.
    • Created a performance optimized non-intrusive CMS for the ASP.NET MVC.
    Technologies: C#, T-SQL, ASP.NET MVC, HTML, CSS
  • Software Expert
    2012 - 2012
    Grand Optical
    • Fixed performance problems in MySQL used for BI.
    • Configured OpenVZ
    • Configured MySQL
    • Analysed a database load.
    • Fixed database indices.
    Technologies: MySQL
  • Director of Research and Development
    2008 - 2010
    • Converted the product architecture into SOA.
    • Optimized the website speed and reliability, including server tools.
    • Performed website load analysis in Microsoft Lab.
    • Managed a team of 5 people.
    • Worked on new SEO practices.
    Technologies: C#, ASP.NET MVC, T-SQL
  • Lead Developer
    2000 - 2008
    Free SAS (previously Tiscali, Alice and LibertySurf)
    • Created an advanced web search engine named "".
    • Built a captive portal for children.
    • Converted and upgraded a cinema website from PHP and MySQL to C# and T-SQL (
    • Created a video back-end system for VOD streaming, including automatic video validation and transcoding.
    • Created an engine to manage parallel mass execution of tasks written in C# and running in isolated domains.
    Technologies: C#, ASP.NET, T-SQL, C++
  • Developer
    1998 - 2000
    Institut Francais du Pétrole (previously D2T)
    • Worked with Microsoft Foundation Classes and Advanced Template Libraries.
    • Evolved a tool used to view and measure the cycle of a motor engine in real-time.
    • Found an algorithm to automate manual calibration in an angular cycle.
    • Registered the profile for a flame of a special spark plug for Peugeot Sport.
    Technologies: C++ MFC
  • Shapr Personal Networking (Development)

    Developed mobile applications (Android, iOS), evolutions, and other updates.

    Gave advice on app content and design and gave support on design tools.

    Recruited, managed, and trained additional external developers to support fluctuating work loads (up to 4).

    - Full Xamarin C# platform-specific technology.
    - Device independent vector graphics dramatically reduced the time lost testing and fixing graphics on multiple devices.
    - Used my own component XamSvg available on component stores.
    - Integrated LinkedIn Connect, Facebook Analytics, Google Analytics, and AppsFlyer.

  • XamSvg (Development)

    A vector graphics library for Xamarin iOS, Android, WP, and XamForms.

    The resolution of retina screens was a revolution. With each increase of pixels per inch on mobile phone screens, developers have to create new images for each new resolution, increasing the work load and the application weight.

    SVG vector graphics are very small files describing an image mathematically through lines and curves. They can change their size and resolution without any pixelization. There is no app performance degradation at all, as the device GPU knows how to accelerate these renderings.

    This library allows you to change just one file in order to change your icons. Additionally, the component supports pressed states and color remapping, so one SVG image file is enough.

  • Speaker at Mobile Conference at IBM Headquarters (Other amazing things)

    I spoke at the mobile conference in November, 2013, in Paris, France at IBM headquarters. I demonstrated how to use C# to code an Android app and an iOS app, and how to reduce code duplication up to 80% by using a cross-platform library. I also demonstrated Windows phone apps, a Windows 8 store app, and a Mac store app.

  • (Development)

    An app that I wrote to program and execute actions when a phone is near an NFC "tag." Examples include exchanging a VCard, connecting to WiFi without needing a password, sending an SMS, and more.

  • Languages
    SQL, C#
  • Paradigms
    Concurrent Programming, Design Patterns
  • Platforms
    Android, iOS, Xamarin, Windows Phone
  • Frameworks
  • Master’s degree in Artificial Intelligence
    1995 - 1995
    Jussieu University (Paris 6) - IARFA, Paris, France
  • Master of Science in Engineering degree in General Engineering
    1990 - 1995
    Esme Sudria High School - Paris, France
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