Available for a 3-month international internship · 3 years of work-study · Efrei × SGP

I'm Alexandre,
full-stack dev.

I build web and mobile applications end to end, from the API to the interface. I'm an engineering student at Efrei Paris and, on a work-study contract at the Société des Grands Projets (the Grand Paris Express), I take part in the v4 rebuild of S-Print, the platform where SGP's partners declare their data.

Portrait of Alexandre Ginisty
3 years 10 months 20 daysof work-study, in real time
~800workstations using my code (prefecture)
11personal, school and professional projects
16languages available on this portfolio

1415161718Société des Grands Projets · lines 14 to 18 of the Grand Paris Express

S-Print v4: the rebuild I'm working on

SGP is building the Grand Paris Express. To manage its contracts, it gives its partners S-Print: a portal to enter and check their declarative data (economic activity, jobs created, construction-site safety). I take part in the rebuild of its third version, which replaces Excel files with a user-friendly interface, controlled reference data and an automatic feed into the Cockpit analysis tool. Here are its five main areas, drawn as a metro line.

200 kmof automatic metro, 68 stations: the Grand Paris Express
v3 → v4complete rebuild of S-Print: Java / Vue.js to Symfony / TypeScript + React
Excel → data entryfree-form files replaced by a controlled interface
Cockpitthe analysis tool fed automatically by S-Print

S-Print · area 1 / 5

Economic footprint

Contract holders declare the economic and social impact of their contracts: at least 20% of the amount for small businesses and 10% of the hours for people far from employment.

What I do there · Entry forms, list and search of the declared footprints.

Everything about S-Print v4 →

Selection

What I'm most proud of

My work-study rebuild, a personal project that holds up, and a school platform that goes all the way down to the infrastructure.

All projects →

About

Engineering student, working developer

After two years of work-study in the SINUM department of the Val-de-Marne prefecture, where I worked on web, mobile and databases, I earned my BUT in Computer Science at the IUT of Créteil-Vitry. Since September 2025, I've been preparing the Efrei Paris engineering degree, Software and Information Systems major, over three years of work-study.

I can work alone — two years of full autonomy at the prefecture — as well as in a team, at school and at SGP. And I use AI every day, with method, to go faster without losing rigour. Alone and in a team → · How I work with AI →

I split my week between Efrei and SGP. At school, I consolidate the fundamentals: software engineering, algorithmics, databases. At work, I deliver: React/TypeScript pages, Symfony services, tests, code reviews, and I take turns as scrum master.

Read my background, from the STI2D baccalauréat to the engineering degree →

GitHub activity · live from the server

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Beyond the code

Rigor, perseverance, curiosity

Four years of weight training, bouldering, wildlife photography and involvement in the Efrei climbing association: what I learned there, I apply to my work.

See all my passions →

Just for fun

A little terminal

Browse my portfolio like a shell. Try help, projects, skills.

alexandre@portfolio ~

Welcome. Type `help`.