Ruben Lellouche · Computer Science · EPFL

I write code at EPFL, lead teams outside of it, and keep a camera for everything in between.

Field: Computer Science, BSc
School: EPFL, Lausanne
Expected graduation: 2028
Looking for: Internship in software, AI or product, 2027
Languages: French, English, Dutch

See my photos Get in touch

Projects

Code on GitHub, each with a README that explains how it works.

01

ReChor

Swiss journey planner

Java · JavaFX · EPFL coursework

A desktop route planner for Swiss public transport. Instead of a single “fastest” answer, it returns every Pareto-optimal journey between two stops, trading arrival time against the number of changes, computed on the real CFF timetables.

The JavaFX interface searches stations, lists the journeys of the day and opens any of them: lines, stops, platforms, times and every change.

Code on GitHub ↗

2.75M

connections in one weekday of the real CFF timetables, scanned in a single pass per query. About 258 MB of timetables for seven days, read from memory-mapped files.

07:12IC → Bern

IC07:12 Genève → 08:56 Bern

IR09:04 Bern → 10:04 Luzern

IC10:18 Luzern → 12:04 Lugano

Fig. 1 — Illustration: the kind of trip ReChor plans, Genève to Lugano with changes in Bern and Luzern, replayed stop by stop (indicative times).

02

ICoop

co-op game

Java · object-oriented design · EPFL coursework

A two-player cooperative 2D game on the course's game engine: two elemental characters, enemies, items and a final boss. Every interaction between actors goes through double dispatch (the visitor pattern), on a modular entity architecture.

Code on GitHub ↗

Photography

Cities, streets, food and nights out, shot on my travels.

17 photos

Thailand

Street food, the Maeklong railway market and a temple hidden in a cave.

12 photos

Canada

City towers, frozen roads and snowy forests.

6 photos

Portugal

Lisbon's bridge and monasteries, and the golden cliffs of the Algarve.

4 photos

Spain

Barcelona through Gaudí: Park Güell, Sagrada Família, Casa Batlló.

7 photos

Mykonos

Aegean sunsets and open-air DJ sets.

4 photos

Ibiza

Ushuaïa nights and planes skimming the beach.

Landscapes

Sea, mountains and snow.

13 photos

Greece

Sailboats, white chapels and Aegean sunsets.

9 photos

Switzerland

Alpine peaks, paragliders and a sea of clouds.

10 photos

Italy

Lemon trees and the cliffs of the Amalfi Coast.

9 photos

Lapland

Northern lights, snowy forests and nights in a lavvu tent.

Leadership

Two volunteer roles in Brussels before EPFL, where I ran events, budgets and teams.

€20,000+

raised for the Alliance Brith with its flagship sports event, which I organised as president.

~1,000

participants at that event, from the federation's five member organisations.

€200,000

budget of the Hashomer Hatzaïr summer camps I co-organised.

200

children at those camps.

Sept 2023 – June 2024

President (elected) · Alliance Brith

National federation of five youth organisations in Belgium. Elected by the five member organisations out of about ten candidates. Ran the flagship sports event, a residential seminar for about 200 participants and a national remembrance march with a public speech.

Sept 2022 – June 2024

Youth Leader · Hashomer Hatzaïr

Co-organised the movement's summer camps for 200 children, and led weekly educational and sports activities for children aged 6 to 8.

Sports

The sports that keep me balanced between exam sessions.

13 photos

Tennis

On the court whenever I get the chance.

13 photos

Scuba diving

Diving whenever I travel near the sea.

11 photos

Boxing

English boxing for focus, footwork and discipline.

8 photos

Skiing

Winters in the Alps, one of the perks of living in Switzerland.

About me

I'm Ruben, a Belgian student from Brussels, now studying Computer Science at EPFL and curious about how technology changes the way we live, work and connect.

At school I like the parts where theory turns into something that runs: algorithms, computer systems and machine learning. I have built projects like a Swiss public transport route planner and a two-player cooperative game.

I also like bringing people together. As elected president of the Alliance Brith, a federation of five youth organizations in Belgium, I ran a sports event for about 1,000 participants. The rest of the time you'll find me on a tennis court, under water with a scuba tank, at the boxing gym or on skis, usually with a camera and a house playlist.

Studying: BSc Computer Science, EPFL
Based in: Lausanne, Switzerland
From: Brussels, Belgium
Speaks: French, English, Dutch
Led: Alliance Brith, 2023–2024

Open to internships · 2027

I'm looking for an internship in AI, data, software or startups. If you think I could fit your team, let's talk.

Download my CV ↓LinkedIn ↗

[email protected]

Email

LinkedIn

linkedin.com/in/lellouche-ruben

↗

CV · PDF

One page, October 2026

↓

GitHub

github.com/rublell

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Home / Photography / Thailand

Thailand ประเทศไทย

Home / Landscapes / Greece

Greece Ελλάδα

Home / Landscapes / Switzerland

Switzerland Suisse

Home / Photography / Canada

Canada

Home / Landscapes / Italy

Italy Italia

Home / Landscapes / Lapland

Lapland Sápmi

Home / Photography / Portugal

Portugal

Home / Photography / Spain

Spain España

Home / Photography / Ibiza

Ibiza

Sunsets and nights on the White Isle.

Home / Photography / Mykonos

Mykonos

Beach clubs on the Aegean.

Home / Sports / Tennis

Tennis

On the court whenever I get the chance.

Images from Unsplash for now; my own photos coming soon.

Home / Sports / Scuba diving

Scuba diving

Diving whenever I travel near the sea.

Images from Unsplash for now; my own photos coming soon.

Home / Sports / Boxing

Boxing

English boxing for focus, footwork and discipline.

Images from Unsplash for now; my own photos coming soon.

Home / Sports / Skiing

Skiing

Winters in the Alps, one of the perks of living in Switzerland.

Images from Unsplash for now; my own photos coming soon.

Home / Projects / ReChor

ReChor

JavaJavaFXPareto routing

A route planner for Swiss public transport that finds and compares efficient journeys between two stations.

Returns several Pareto-optimal journeys instead of a single fastest one, trading off travel time against number of transfers.
Shows each journey in detail: lines, departure stops and platforms, times and every segment.
JavaFX interface with origin and destination search, a list of recommended journeys and a detail panel.

Home / Projects / ICoop

ICoop

JavaOOPGame engine

A 2D cooperative game where two players, Fire and Water, explore areas and work together up to a final boss.

Two simultaneous players with complementary elemental abilities.
Element-based interactions with enemies, walls and obstacles, collectable items such as bombs, and a final boss with ranged attacks.
Object-oriented design: double dispatch with a visitor, polymorphic entities and cell-based movement rules.