Johan Herreño

Johan Herreño

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.NET Developer | C# · ASP.NET Core · REST APIs · SQL Server
Colombia

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Résumé

Jobs verified_user 0% verified
  • Alternova Inc
    Interactive Software Developer public Remote experience
    Alternova Inc
    Jul 2024 - Feb 2026 (1 year 8 months)
    🔹 Built lightweight backend services and REST API endpoints using Express.js and Firebase to manage dynamic content, user data, authentication, and application workflows. 🔹 Developed 2D/3D games for Android, Windows, and WebGL in Unity using C# for the healthcare sector, following security standards (HIPAA, OWASP). 🔹 Implemented real-time communication using Supabase Realtime to listen for backend status updates and continue workflows after users completed external forms or assessment steps. 🔹 Built systems that dynamically loaded content (dialogues, media, and configuration) from Firebase, decoupling content from code for easier updates. 🔹 Implemented CI/CD pipelines and an auto-update system for Windows builds in Unity, patches,
  • P
    Multimedia Engineer public Remote experience
    Politécnico Grancolombiano
    May 2021 - Jun 2024 (3 years 2 months)
    🔹 Developed and maintained REST APIs using ASP.NET Core, Microsoft SQL Server, and MongoDB to manage data storage, retrieval, simulation results, queries, data validation, and reporting workflows. 🔹 Developed 2D/3D educational simulators for WebGL in Unity using C# featuring immersive gameplay that enhances learning. 🔹 Integrated Unity applications with REST APIs and backend services to synchronize user progress, academic data, and simulation outcomes. 🔹 Built administrative modules connected to backend data for visualization, filtering, reporting, and export of academic information. 🔹 Refactored legacy .NET APIs to improve maintainability, performance, scalability, and long-term supportability.
  • S
    Junior Unity Developer public Remote experience
    Suomaya
    Jul 2020 - Feb 2021 (8 months)
    🔹 Developed two 3D educational games for web and mobile platforms, including Android, using Unity. The first focused on trivia-based challenges, while the second featured resource management mechanics, both designed to promote learning and maximize user engagement. 🔹 Designed an interactive web-based application in Unity to visually demonstrate the effects of cold on the human body, enhancing user understanding through an immersive learning experience. 🔹 Contributed extensively to game design throughout the conceptualization and development phases of all projects, ensuring alignment with educational objectives and delivering engaging user experiences. 🔹 Produced a cinematic sequence in Unity using Cinemachine, clearly presenting key
Education verified_user 0% verified
  • Servicio Nacional de Aprendizaje (SENA)
    Tecnologo en Desarrollo de Videojuegos, Ninguna
    Servicio Nacional de Aprendizaje (SENA)
    Jan 2019 - Jan 2021 (2 years 1 month)
Projects (professional or personal) verified_user 0% verified
  • Servicio Nacional de Aprendizaje (SENA)
    Elementary Dungeons
    Servicio Nacional de Aprendizaje (SENA)
    Apr 2020 - Jun 2020 (3 months)
    - This game was the final project of my career, it has Voxelart art and it's a Beat 'em Up game with RPG elements. - Programed the AI of most enemies. - Designed the game levels and contribute ideas to the game design.