Hello, world — I'm

Da Cruz Théo

Full Stack Web & Mobile Developer

I build web and mobile apps — clean, efficient and built to scale.

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01.About Me

Hey, I'm Théo. I'm a 24-year-old software engineer. I'm passionate about technology with 3 years of professional experience gained through my studies, work, and personal projects.

I work across web, mobile, and backend projects, using technologies like React, React Native (Expo), and Express.js, among others, to build scalable and high-quality applications.

I enjoy working on complex challenges, and I’m currently seeking opportunities to contribute to innovative solutions.

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

Shelt is a community app for outdoor enthusiasts to discover shelters and bivouac spots. Users can add locations, share reviews, and provide helpful information. In the future, we plan to partner with shelters to enable direct reservations.

React NativeTypeScripttwrncExpress.jsPostgreSQLPrisma

Fishbotica

Live ↗

Turning traditional aquariums into smart ecosystems. This mobile app, developed in collaboration with the Blue Living Lab at Nausicaá, connects to IoT sensors to monitor water health and manage species databases, making advanced fishkeeping accessible to everyone.

React NativeTypeScripttwrncgRPCFreeRTOSPython

Fishbotica FastScan POC

Live ↗

A Proof of Concept (POC) designed to automate water testing. Using Kotlin and image processing, it analyzes test strips from a photo to provide instant digital results, aiming to simplify the fishkeeping hobby

KotlinPython

Cave Game - Dungeon Crawler

GitHub

A 2D dungeon crawler where players explore dungeons, fight enemies, and collect loot.

CRaylib

swipe to explore →

03.Experience

Software Developer (Apprenticeship)

@ Tolede — Troyes

Sep 2022 — Aug 2025

Developed and improved features for the company’s ERP system Participated in client meetings to gather and analyze requirements Selecting 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.Contact

I'm actively looking for a full-time position as a Full Stack Web or Mobile Developer. If you think my profile could be a good fit for your team, I'd love to hear from you.

Get In Touch
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