Arnau Guell
Senior Full Stack Flutter & AI Developer
Salary / Daily rate
Barcelona, Spain
Freelance, open to permanent contract
Remote only
Skills
Languages
About me
Intro
Sr Full Stack Flutter & AI Developer with 10+ years creating mobile apps, web platforms, and AI-powered systems. Built multi-agent chat systems with OpenAI GPT/LangChain and led cross-platform development for major clients. Expert in Flutter, Firebase, Python AI integration, and VR/3D visualization for scalable solutions.
Work experience
Full stack flutter developer
WanderPadFreelance
Oct 2025 - Present
1 year 1 month
Creating the full frontend and backend of a new startup app and web in flutter and firebase.
SR Flutter Developer
NEORIS
Aug 2024 - Mar 2025
8 months
Madrid, Spain
Built an AI-powered multi-agent chat system integrating Jira, ChromaDB, OpenAI GPT, and LangChain to generate code and automate pull requests. Developed Finetwork’s client portal for Android, iOS, and Web using Flutter, Melos, and Bloc.
Flutter Developer
Abalit Technologies
Jan 2022 - Jul 2024
2 years 7 months
Barcelona, Spain
Led the development of a pharmacy shop app for iOS, Android, and Web using Flutter. Integrated RESTful APIs, Firebase for bug tracking, and Cloud Messaging for notifications.
Developer
Unit Elements
May 2017 - Jan 2022
4 years 9 months
Barcelona, Spain
Led the development of apps, web platforms, and VR games for events using Flutter, Angular, and Ionic, with Firebase for the backend.
Visualizador 3d
Dantex Group
Oct 2015 - Jan 2017
1 year 4 months
Created 3D and VR visualizations for interactive websites.
Digital artist
Freelancer
Aug 2014 - Oct 2015
1 year 3 months
Developed a mobile multiplayer Unity game and 3D tutorials showcasing traditional cultural events. Created 3D animations for a local museum and handled editing & cleanup for local TV.
3D Visualizer
The Bionic Group
Apr 2014 - Jul 2014
4 months
pinewood studio london
Produced architectural 3D visualizations to illustrate construction processes.
Digital Artist
SORALUCE
Feb 2011 - Oct 2013
2 years 9 months
Developed 3D visualizations and interactive games for ads and tutorials.
Education
Escape Studios
Compositing for VFX
2014 - 2014
1 year
Syntesis
VFX for ads/film
2009 - 2011
3 years
CetPenedes
Computer Science
2007 - 2009
3 years
9zeros
Traditional 2D animation