Hello, world — I'm

Da Cruz Théo

Full Stack Web & Mobile Developer

I build web and mobile apps — the kind that actually work well and don't fall apart under pressure.

GitHubLinkedInEmail
scroll
01.About Me

Hey, I'm Théo. I'm a software engineer with a genuine passion for tech — I got into it early and never really stopped. I've built up my first real experience in software development across web, mobile and embedded systems.

I'm now looking to put those skills to work on varied projects, with a particular focus on web and mobile development.

When I'm not coding I'm usually gaming, tinkering on side projects, or going down rabbit holes about things I probably don't need to know.

3+

Years exp.

Frontend

HTML
CSS
Tailwind CSS
JavaScript
TypeScript
React.js
Next.js
React Native
Expo
Kotlin

Backend

Node.js
Express.js
Prisma
PostgreSQL
MySQL
Oracle
PL/SQL

DevOps & Tools

Docker
Git
CI/CD

Software Dev

Python
C
02.Projects

Shelt

GitHubLive ↗

A full-stack shop built for a freelance client. Cart, Stripe checkout, stock management and a basic admin panel. Nothing fancy but it works and it's in prod.

React NativeTypeScripttwrncExpress.jsPostgreSQLPrisma

Fishbotica

Live ↗

Mobile app for connected aquarium management. The hardware sensor talks to the app over BLE or Wifi, gives you water params in real time and tells you if something's off. Also has a species database. My main project right now.

React NativeTypeScripttwrncgRPCFreeRTOSPython

Fishbotica FastScan POC

Live ↗

A chat app I built to get deeper into WebSockets. Supports rooms, file uploads and shows who's online. Ended up being more involved than expected.

KotlinPython

Cave Game - Dungeon Crawler

GitHub

Internal dashboard that pulls data from GitHub and formats it into something readable for the team. Charts, PR stats, that kind of thing.

CRaylib

swipe to explore →

03.Experience

Software Developer (Apprenticeship)

@ Tolede — Troyes

Sep 2022 — Aug 2025

Added features and adapted the company's ERP to meet client needs and regulatory requirements. Fixed bugs, handled continuous improvement, and joined client meetings to gather and analyse requirements. Also helped select third-party providers for ERP integrations.

PL/SQLOracle

Methods Engineer (Apprenticeship)

@ Benalu — Liévin

Sep 2021 — Jul 2022

Worked on continuous improvement of the production line. Prototyped a welding skate with trajectory correction and designed a clamp ammeter to measure the consumption and usage of welding stations.

AutomationPrototyping

Automation Technician (Internship)

@ SA2I — Troyes

Apr 2021 — Jun 2021

Short internship in industrial automation.

AutomationIndustrial Systems
05.Get In Touch

I'm currently open to new opportunities. Whether you have a project in mind, a question, or just want to say hi — my inbox is always open.

Say Hello ✉
GitHubLinkedInEmailResume