Rouen, Normandy · full-stack developer in training
From the roots up.
I'm Valentin Bosson, a developer at Zone01
Rouen. I build web software the whole way through: Go servers
and SQL below ground, accessible interfaces up in the light. Right now
I'm looking for an alternance to keep growing on real
projects.
Fig. 1 · my stack, drawn as a cross-section. Everything above ground rests on everything below.
Field work
Grown from an empty folder.
Zone01 is project-based and peer-driven: no lectures, no shortcuts.
Every project below started as bare soil, an empty repository and a
spec, and had to be brought to something that actually runs.
Groupie Tracker
go · rest apis · openstreetmap · team of three
A concert-discovery web app, built with two classmates. At startup
the Go server pulls four scattered API endpoints, artists, venues,
dates and the relations between them, merges them
server-side, and serves both the pages and its own small
JSON API.
The parts I would defend in a review: a filter panel where four
criteria combine (member count, creation year, first album, venue)
without the page ever feeling like a database query, and a concert
map that geocodes venues through OpenStreetMap,
with a cache so no address is looked up twice.
Fig. 2 · four scattered API endpoints, one navigable river.
Net Cat
go · tcp sockets · goroutines · concurrency
A rebuild of nc as a group chat: one Go server, up to
ten clients, raw TCP. Each client lives in its own goroutine and a
mutex guards everything they share. Newcomers pick a unique name,
get the history replayed, and from then on every message
reaches every connected client, timestamped and written to
a session log.
It grew small comforts too: /rename and /list commands, an admin
who can mute or ban, and enough terminal escape-code care that an
incoming message never mangles the line you are typing. This is the
project that taught me concurrency is less about speed and more
about who speaks when.
Fig. 3 · one server, many clients: trees on a shared mycelium. Every message reaches the whole grove.
Forum
go · sqlite · docker · sessions & cookies
A discussion platform built from scratch in a small team:
registration and login, posts with images, comments, likes and
dislikes, category filters. Go on the server, SQLite
underneath, the whole thing shipped as a multi-stage
Docker build.
The part that taught me most is the authentication, hand-rolled
with UUID session cookies. Building a door people actually walk
through is where my cybersecurity background finally met my code.
Fig. 4 · many cells inside, one guarded entrance.
Lem-in
go · graphs · pathfinding · file parsing
A digital ant farm. The program parses a map of chambers and
tunnels, finds several shortest paths that share no
chamber, and distributes the colony across them so
everyone reaches the exit in as few turns as possible.
Under the hood: breadth-first searches under constraints, priority
queues from Go's heap package, and a distribution function that
decides which ant takes which road. Pure algorithms, no server in
sight.
Fig. 5 · the colony splits across paths that share no chamber and crosses in fewer turns.
Climatehow the work growsProject management · data analysis · working as a team.
Canopywhat people touchHTML · CSS · JavaScript: responsive layouts, accessibility as a habit rather than an afterthought.
Understorywhat does the workGo: web servers, REST APIs, routing, templating, tidy project structure. Python and Java on the side.
Soilwhat persistsSQL · SQLite · MySQL: schema design, data modeling, queries that stay readable.
Myceliumwhat connectsTCP sockets · goroutines · channels: concurrency as coordination.
Bedrockalways thereGit · Linux · Docker · VS Code · Canva · browser dev tools · reading the docs before guessing.
A forest only looks effortless above ground. Same for software.
Notebook
A few honest pages.
Before
Cybersecurity at Lycée Grieu, Rouen. I learned to ask what can go
wrong before asking what can go right, and that reflex never left.
Now
Zone01 Rouen. Project-based and peer-driven, no lectures: you ship
or you don't pass. It suits me.
Next
An alternance in or around Rouen. Real projects, a real team, real
users: the conditions a young developer grows best in.
Off-screen
Happiest outdoors; most of my stubborn bugs were solved on a walk,
away from the keyboard. When it rains: basketball and video games.
Contact
The gate is open.
I'm looking for an alternance as a developer,
full-stack or security-leaning, in or around Rouen. I work in French
and English (B2). If your team needs someone who cares about the
roots as much as the canopy, write to me. I answer.