Hi, my name is

I build things for the web

I’m a creative developer and ISEP graduate, turning raw ideas into polished products. Now heading towards gaming and 3D animation.

Hire me!
Hadouin Leroy portrait

About me

Hello! My name is Hadouin LEROY, a creative developer with a strong technical background, shaped by hands-on experience designing and building applications from scratch. I like turning raw ideas into polished, tangible products.

I graduated from ISEP engineering school in Paris (2025), with exchanges at Glyndwr University in Wales (UX design, mobile apps) and Presidency University in Bangalore (management, blockchain). Along the way I worked at Dassault Systèmes, Enoria, JuniorISEP, and now Runelabs.

Today I’m heading towards gaming and 3D animation, wearing hats as a creative dev, UX designer, and certified scrum master. Fluent in English, native in French.

My experience

stuff i've shipped along the way

  1. Jan 2025 → Now · 1.5 years

    Game Developer @ Runelabs

    Web3 Game Studio

    • ▹ Designed Midgard from the ground up, crafting its full UX/UI, logo, brand and 3D assets with a strong gaming identity and mobile-first responsive approach. Helped shape a platform enabling decentralized monetization for indie studios.
    • ▹ Led the full frontend development of PonziLand, crafting a polished on-chain game experience at the intersection of gaming and crypto. Partnered closely with the Game Designer to turn gameplay into intuitive, immersive user flows.
    • ▹ Built animated landing page experiences, Three.js 3D scenes and Blender assets, then led major rendering optimizations.
    • Svelte
    • Three.js
    • Blender
    • Figma
    • UX/UI
    • Branding

  2. Sept 2023 → Jan 2025 · 2 years

    Software Engineer · R&D Delmia @ Dassault Systèmes

    3D software for industry

    • ▹ Led the end-to-end architecture and redesign of a documentation engine, taking it from requirements gathering to production deployment. Defined user needs, selected the technical stack, developed custom plugins, and set up Docker + GitLab CI/CD infrastructure.
    • ▹ Owned the integration of a code demo tool in a Product Owner role, coordinating with an international team and applying a user-centered approach across product, UX and technical implementation.
    • Docker
    • GitLab CI/CD
    • Plugins
    • Product Owner
    • UX

  3. Feb 2023 → Sept 2024 · 1.5 years

    Tech Lead @ JuniorISEP

    Junior Dev Shop

    • ▹ Created JE Intervenants, a full Angular PWA combining a user-facing mobile app and an admin dashboard. Designed both mobile and desktop interfaces, led frontend development and structured the project with several collaborators.
    • ▹ Technical qualification of bespoke client apps, including projects for Ampère-Renault, assessing feasibility and defining appropriate technical approaches.
    • Angular
    • PWA
    • Frontend
    • Scrum Master
    • Prototyping

  4. Sept 2022 · 6 months

    Frontend Dev @ Enoria

    ERP / CRM Software

    • ▹ Delivered a full UI redesign and UX improvements for a CRM-like management application, making the product clearer, more modern and easier to use. Bootstrap, SCSS and JavaScript in an agile environment.
    • Bootstrap
    • SCSS
    • JavaScript
    • Agile

Education

where i trained

  • Paris, France · 5 years

    ISEP · Engineering Degree

    School coding projects, game dev and hackathons.

  • Wrexham, Wales · 6 months

    Glyndwr University · Exchange

    UX design courses, mobile app development.

  • Bangalore, India · 3 months

    Presidency University · Exchange

    Management class, blockchain group project.

My projects

things i've done during my life

Build things with me.

I'm very flexible both in learning quickly different subjects but also in adapting and being empathic to my fellow teammates.

Get In Touch Check out my blog !