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Visual Studio EX3 header

.NET Developer | FullStack Developer | Unity Developer

Hi! 👋 I'm José Miguel Sánchez Fernández, a.k.a. [EX3], an experienced .NET Developer from Spain with +15 years of professional experience in different stacks, languages and technologies:
  • +7 years of experience working at BBVA and some startups like Voicemod, working on desktop applications and backends, in bank, fintech and multimedia projects.
  • +5 years of experience working as game developer with Unity, XNA, MonoGame and Flash technologies in some spanish game studios like Virtual Toys (Saber Interactive Spain now) or The Game Kitchen, as gameplay programmer and tool programmer mostly, with experience on consoles like XBox 360 (XBLIG), XBox One, PS4, Nintendo Switch and PS Vita.

You can see in detail my whole experience and contact me in my Linkedin profile (ES).

Also you can see the game projects that I worked on in my Professional Game Portfolio.

Featured Languages, Tools and Technologies

.NET Framework  .NET Core  C#  Visual Studio  Microsoft SQL Server  Git  Blazor  Bootstrap  Sass  Unity  Plastic SCM  Visual Studio Code  C (ANSI C89/90) 

I have professional experience in the following systems

Windows  XBox One  Nintendo Switch  PlayStation  PlayStation 4  PlayStation Vita  Linux  CentOS 

About me

  • 🎨 Artist profile since a very young age, later converted to a programmer at the age of 20.
  • 🎓 I started learn to program by my own, motivated on learn how to create my own videogames.
  • 🛠️ As programmer, I enjoy developing my own technology and tools or extend existing ones with custom solutions.
  • 🎛️ Despite that I'm more backend profile than frontend, I have skills and deep focus on UI/UX in my projects.
  • 🚀 In my free time, I like to work on little experiments, demos and tools in Unity or retro technologies like DIV Games Studio 2.
  • 📷 Also, in my free time, I enjoy traveling and photography. You can see and follow my work on Instagram and Flickr.


  1. div2-tlsa98-engine div2-tlsa98-engine Public

    A native game engine, service and component oriented, for DIV Games Studio 2 (vanilla), writen in ANSI C-89 using Watcom C++ 10.6.

    C 1

  2. DIV2.Format.Exporter DIV2.Format.Exporter Public

    Multiplatform framework to converts modern graphic format images to native DIV Games Studio graphic formats: PAL, MAP and FPG files.

    C# 3

  3. Artemis Artemis Public

    Little Tower Defense game developed in Unity as technical test for a job interview.


  4. StarFighter StarFighter Public archive

    A MS-DOS pseudo-3D space shoot 'em up made in SNES mode7 developed with DIV Games Studio 2 'vanilla' (the original MS-DOS version from 1998).

    Pascal 9 2

  5. Grey-Infection Grey-Infection Public

    2D Puzzle-Platformer Adventure game, developed with XNA 4.0 for XBox360 and published on Xbox Live Indie Games (XBLIG). Game assets not included.

    C# 3 1

  6. dx_lib32 dx_lib32 Public

    Game framework/API/wrapper for develop games for Windows with Visual Basic 6.0 or .NET and DirectX | Biblioteca de desarrollo de juegos para Windows con Visual Basic 6.0 o .NET y DirectX.

    VBA 10 9