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Sylvain HéliouSH

Sylvain Héliou

Unity 3D / C# / VR / AR Developer

€300/day
Paris, FR
3-7 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Sylvain

Looking for a Freelance Unity 3D developer?
Want to create a virtual or mixed reality game or application?

You're on the right profile!

With over 6 years of experience, I've worked in sectors such as entertainment, education, health, and culture!
I've collaborated with companies like Pass Education, the Musée de la Poste for the Paris 2024 Olympic Games, as well as in the entertainment industry and cultural associations!
I can efficiently support you with:
- Designing games and applications, mobile and desktop, that meet your needs and desires.
- Strengthening specialized development teams.
- Managing large-scale projects and supervising teams.
- Communicating with UX/UI design teams to ensure adherence to design guidelines.
- Writing technical documentation.
- Participating in refactoring, continuous improvement, and code review.

I also have knowledge of the MetaXR SDK, SQL databases, agile methodologies, web 3, and analyzing and understanding various needs.

Do you have a project? A need?

Contact me!
  • French

    Native or bilingual

  • English

    Fluent

Can work on-site
Paris (up to 50km), Lille (up to 50km), Paris (up to 50km), Rennes (up to 50km)

Experience

  • Education Nationale
    Training software via FPS interaction
    VIDEO GAMES AND ANIMATION
    August 2025 - September 2025 (1 month)
    Paris, France
    Contacted by a teacher from the French national education system in a technical high school, I developed a 3D interaction software for training his students.

    My responsibilities:
    - VR Unity 3D development for Meta Quest 2/3/S.
    - C# development.
    - Level and Game Design.
    - Implementation of a gamification system, achievements, and badges.
    - Integration of educational resources into Unity scenes.

    Technical and functional environment: Meta XR SDK, VR/XR, Meta Quest, Android, Clean architecture, unit testing, Kanban, Scrum, agile methodologies, Design System, SQL, Windows, algorithm.
    Unity 3D E-learning Video games Virtual reality Meta Quest
  • W. (particulier)
    Zorgaville
    VIDEO GAMES AND ANIMATION
    July 2025 - August 2025 (1 month)
    Paris, France
    For a private client, I recreated the gameplay mechanics of "The Sims 2" DS version from scratch.

    My responsibilities:
    - Cross-platform (Windows and Android) Unity 3D development.
    - C# development.
    - Game design and Level Design for multiple scenes.
    - Integration of graphic assets chosen by the client.
    - Configuration of energy, hunger, and distraction gauges.
    - Programming of objects interacting with the player.
    - Sound design.

    Technical and functional environment:
    Unity, Android, Clean architecture, unit testing, Kanban, Scrum, agile methodologies, Design System, SQL, Windows, asset integration.
    Unity 3D Video games Android C# Agile methodology
  • FPS Réalité Mixte XR Meta Quest
    Mixed Reality FPS XR Meta Quest
    VIDEO GAMES AND ANIMATION
    October 2024 - April 2025 (6 months)
    Paris, France
    I joined an entertainment company of about ten employees, a European leader in its field. Working directly with the CEO, I developed a prototype multiplayer FPS in mixed reality.

    For indoor and outdoor use, exclusively on Meta Quest 3, my responsibilities were:
    - Full development of the XR (Mixed Reality) project.
    - Implementation of a robust project creation process.
    - Identification of compatible libraries to integrate.
    - Development and strategic monitoring.
    - Implementation of Passthrough (physical interactions in a virtual world).
    - Ability to modify the game environment: respawn points, bases, obstacles, bonuses... and save it between sessions.
    - Creation of custom frameworks and specific interaction libraries.
    - Low-latency networking management, compatible with real-time shooter gameplay.

    Technical and functional environment:
    Meta XR SDK, Photon, Unity Netcode for GameObject, Meta, Android, Clean architecture, unit testing, Kanban, Scrum, agile methodologies, Design System, WebGL, SQL, Windows, JSON, Mirror, Passthrough.
    Unity 3D Video games Photon Virtual reality Mixed reality

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Education

  • Computer Science
    42
    Informatique
  • Computer Science
    EPITECH Paris
    Informatique

Skill set

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