Jean Marcillac

Work

Heritage platform

Website of the Institut occitan de l'Aveyron

2025 · Computer science degree internship · Built solo, one year of development

The platform opens thirty years of Occitan field recordings to the public: over 5,000 videos, 29,000 sources and 4,500 contributors, across 310 towns and villages of the Aveyron. Each one finds its history, its landscapes and the voices of its people. I still maintain and develop the site.

• Blazor Server Dynamic, reactive front-end written in C#.
• Java Language of the API built with Spring Boot.
• Spring Boot Project API: CRUD operations on MongoDB and exchanges with Google Drive.
• MongoDB NoSQL database storing the data as JSON documents.
• Google Drive API Secure storage and retrieval of the project images.

Visit the site

Internal tool

Worksite phase planning

2026 · Apprenticeship at Enedis

Worksites at the Enedis Auvergne engineering department run over several years. The tool gathers their phases into Gantt charts and workload graphs, to plan long-running works and spread the load between contractors and project managers. The data shown here is anonymised.

• Python Processing of worksite data and schedule computation.
• Streamlit The tool's interface: filters, Gantt charts and workload graphs.
• MinIO Object storage for the data the application saves.

Distributed infrastructure

Myriade

2025 and 2026 · Non-profit project · Built solo

Myriade lets Minecraft servers talk to each other both ways, even when they sit behind proxies that know nothing of one another. A portal system moves players from one server to the next on top of that instant channel. More than a dozen independent servers are already linked, several of them networks in their own right, forming a single world you can walk across.

• Redis Heart of the project: server-to-server messaging over Pub/Sub and transient transfer data.
• Java Language of the Minecraft plugins carrying the messaging and the portals.
• Paper MC Minecraft API used to build the server plugins.
• Kotlin Back-end services, for concise and maintainable code.
• Spring Boot REST APIs securing the exchanges between servers and database.
• MongoDB Servers, portal coordinates and user identifiers.
• Blazor Server Web panel for administering the server networks.

DevOps & security

Secure development environment for the Institut occitan de l'Aveyron

2024 · Computer science degree internship · Built solo

Administration of a Debian VPS for the institute: hardening (firewall, SSH) and a full CI/CD pipeline. Drone CI runs continuous integration, SonarQube analyses code quality and a private registry stores the Docker images. Every development project at the institute now goes through this pipeline, with a clear gain in time and reliability.

• Drone CI Continuous integration: automated tests and deployments for the hosted projects.
• SonarQube Static code analysis: quality, security and maintainability.
• Docker Compose Orchestration of the services and Docker networks.
• Docker Registry Private storage of the Docker images, for controlled deployments.
• Debian The VPS operating system: firewall, SSH hardening and access management.

Other projects

Dashboard2026Apprenticeship at Enedis

Radar, project tracking

Dashboard tracking projects milestone by milestone, for engineering and operational units.

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Radar tracks how projects progress, milestone by milestone, for the engineering department and the operational units alike. Every stage is counted and filterable, which shows where files pile up and helps smooth their path to completion.

• Power BI Data modelling and the dashboard shared with the teams.

Artificial intelligence2025Graded computer science project

GenSense IA

Gender detection and person recognition from images, with face segmentation and a web panel.

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Two artificial intelligences: the first detects a person's gender from an image, the second recognises individuals from my year group. A face segmentation model prepares the ground for both, and a web panel drives the whole system. Gender classification reaches 99% on men and 95% on women, person recognition around 85%.

• Python 3 Development of the AI models and image processing.
• Flask Web API linking the models to the panel.
• YOLO Fast, accurate face detection and segmentation.
• Blazor Server Interactive web panel talking to the server in real time.
• Docker Containerises the project for a stable, reproducible deployment.

Source code

Showcase website2025Non-profit project

Website of the Alliance d'Elendil

Showcase for a network of game servers, fed live by the game API.

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French-speaking players looking for a server usually land on cluttered pages. This one lays out the game servers and the ideas behind the Alliance clearly, with live data pulled from the game API. It is becoming a reference in the community.

• Blazor Server Development of the site, using the MudBlazor component library.
• Nginx Reverse proxy routing requests to the right container.
• Let's Encrypt SSL certificates and HTTPS traffic.
• Docker Containerises the project for a stable, reproducible deployment.

Visit the site

Community tool2024Non-profit project

Jogaires Inspector

Shared record of player behaviour, used by about a dozen server administrators.

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Minecraft server administrators log player behaviour here: bans, warnings, plain information or recommendations. Everyone reads everyone else's notes, which makes moderation across servers far easier. The tool serves about a dozen administrators and lists several thousand players.

• Kotlin Back-end of the project, for concise and efficient code.
• Spring Boot API exposing secure endpoints to create and read the reports.
• MongoDB Storage of the reports as JSON documents.
• Blazor Server Real-time interface for reading and adding entries.
• Docker Containerises the project for a stable, reproducible deployment.

Teaching application2024Third-year degree project

Virtogen

Population genetics simulation on fruit flies, for biology lab classes.

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Designed with lecturers from the biology faculty of Clermont-Ferrand, Virtogen simulates how genetic traits evolve in fruit fly populations. Students work at a virtual lab bench, add vials of populations with chosen phenotypes, then watch the generations unfold and test genetic interactions.

• Vue.js Interface for handling the vials and watching the populations in real time.
• Symfony Back-end for the data and business rules, exposed as a REST API.
• Doctrine & MySQL Phenotypes, simulation settings and the evolution of generations.
• Docker Containerises the project for a stable, reproducible deployment.

About

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  INSA Lyon

  Computer engineering student

  Public engineering school founded in 1957 on the La Doua campus in Villeurbanne, near Lyon. It welcomes more than 6,000 students.

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  Enedis

  Apprentice, data analysis and web development

  Subsidiary of EDF and operator of the public electricity distribution network across 95% of mainland France, serving over 37 million customers.

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  Institut occitan de l'Aveyron

  Web developer and treasurer

  Association registered in 2003, devoted to safeguarding, promoting and passing on the Occitan heritage of the Aveyron. It runs Occitan-language field surveys, Operation País, and opens the archives to the public.

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  Valorium

  Developer and president

  Non-profit built around virtual worlds and online communities, working to connect French-speaking Minecraft servers within a single metaverse.