David Freixes Sans

Software Developer

Barcelona, Spain

About Me

I am a full-stack developer specializing in TypeScript, React, and Next.js. I build modern web applications using GraphQL and design systems such as Shadcn, Mantine, MUI, and Tailwind. I combine a strong product mindset with hands-on engineering experience. I am the developer behind ENVIOxENVIO and the co-founder and technical lead at Menorca Yacht Brokers, where I drive the evolution of their digital platform.

I come from a solid engineering foundation (UOC) and trained as a Java Full-Stack developer. My previous career and a Master's in Teaching strengthen my communication, leadership, and continuous learning skills. My goal: build scalable, usable solutions with real-world impact.

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Technologies & Tools

I work with modern technologies to build scalable and efficient solutions

GitHub Activity

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Experience

Professional experience in web development and full‑stack applications.

ENVIO x ENVIO - La Transitaria Digital de Europa

Full Stack Developer

October 2024 - Present

Developed enterprise-grade logistics platform with instant rate calculation engine using complex algorithms for freight pricing and Neo4j for graph-based routing optimization
Built comprehensive order management system with real-time tracking, automated invoicing via Holded integration, Stripe payments, and accounting modules for debt and statement management

AurigaIA

Full Stack Developer & Founding Engineer

October 2025 - February 2026

Built a full-stack multi-tenant SaaS platform for logistics management using Next.js 15, React 19, TypeScript, and Supabase
Architected authentication system with role-based permissions, OAuth integration, and tenant protection pattern for secure data isolation

Menorca Yacht Brokers

IT Developer & Co-Owner

November 2024 - January 2026

Co-owner and developer of the official Menorca Yacht Brokers website
IT manager, overseeing the company's technological infrastructure

CET10 / Fundació CET10

Camp Coordinator

June 2023 - July 2023

Supervised a team of professionals
Designed sports programs and activities

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Projects

Personal and professional projects

ENVIO x ENVIO Platform

Live

Digital freight forwarding platform with GraphQL APIs and modern UI components.

ReactNext.jsGraphQLMantine UICypher

Live

RegalarJuego

Live

AI-powered board game recommendation platform that helps users find the perfect board game gift in less than 60 seconds using BoardGameGeek data and intelligent matching.

Next.jsReactTypeScriptTailwind CSSSupabaseReact QueryNVIDIA API

Live

Promptinity SaaS

Completed

SaaS platform for organizing and managing AI prompts. Professional tool for teams working with ChatGPT, Claude, and Gemini to structure, optimize, and reuse prompts efficiently.

Next.jsReactTypeScriptTailwind CSSSupabaseReact Query

Live

AurigaAI

Completed

AI-powered logistics platform that automates freight quotations, optimizes carrier rates with machine learning, and streamlines supplier communications.

Next.jsReactTypeScriptTailwind CSSStripeSendgrid

Live

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Studies

Education and training completed to develop expertise in this field.

Universitat Oberta de Catalunya

Bachelor's in Computer Engineering

September 2020 - July 2026

In Progress

Universidad UDIMA

Master's in Teacher Training for Secondary Education

February 2023 - February 2024

Completed

Bootcamp Java Web Fullstack Developer

Java Web Full‑Stack Developer (376h)

May 2024 - August 2024

Completed

EAE Business School

Digital Transformation Program focused on SMEs (150h)

September 2023 - January 2024

Completed

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Contact

Have a proposal or want to collaborate? Write to me and let's talk.

dfreixes32@gmail.com

Barcelona, Spain