Hi! My name is René Serrano. I’m a full-stack developer and creator of NeoTribes World — a platform exploring how technology can help regenerative communities become more visible, connected, and supported over time.
My background is in aerospace engineering and data, but over the last years I shifted into building products end-to-end: from concept and UX to backend systems, deployment, and iteration in the real world.
Today I’m especially focused on mission-driven infrastructure: tools that help people coordinate, find belonging, and build practical alternatives — without losing the human scale.
NeoTribes World is a web platform designed to support a living network of intentional, place-based communities and aligned people. Rather than functioning as a static directory, it is being built as shared digital infrastructure to help regenerative communities become visible, coordinate visits and stays, exchange support, and build trust over time.
The platform makes visible a broader continuum of intentional living — including ecovillages, colivings, guesthouses, practice spaces, and transitional places — and focuses on people and place together: shared rhythms, welcoming pathways, and real community life.
The current version features an interactive map, community profiles, onboarding flows, and early trust signals. The project is developed end-to-end by me, from product design and UX to backend APIs, data modeling, infrastructure, and deployment.
NeoTribes World is intentionally early and evolving, built with a long-term vision of enabling coordination, belonging, and collaboration across decentralized communities without relying on extractive platforms.
Visit the platform: www.neotribes.world
#Full-Stack Development
#Product Design
#Community Platforms
#Web Infrastructure
#Distributed Systems
#Maps & Geospatial
#Databases
#APIs
#DevOps
#Regenerative Technology
Backend developer in Vienna (hybrid) delivering scalable RESTful services, TDD-driven development with comprehensive unit tests, and refactoring legacy code with modern design patterns. Led epics end-to-end, contributed to architecture decisions, and collaborated across front-end/analytics via agile practices. Built and migrated MSSQL/PostgreSQL databases and deployed containerized services with Docker and Kubernetes, including scheduled job orchestration.
#Back-End
#Web Development
#Python
#Git
#Software Design Patterns
#Unit Testing
#TDD
#REST
#Databases
#PostgreSQL
#MSSQL
#Docker
#Kubernetes
Full-stack role focused on Django backend maintenance, improvements and deployments for a high-traffic system (thousands of users, hundreds of orders/day) including Android/web/admin backends, external sales channels, kitchen order systems, centralized database, stock management and data analysis. I also rebuilt the admin UI from scratch with React + TypeScript and Django DRF, delivering a modern, responsive interface while developing the supporting API endpoints.
#Web Development
#Engineering
#Computer Science
#Programming
#Project Management
#Python
#Linux
#Servers
#Django
#Stripe
#Back-End
#SQL
#Databases
#Front-End
#React
#TypeScript
I developed a Python program with GUI that automates the optimal decision process behind the scaling of security filters at Spanish airports, minimizing passenger wait time as well as service costs. Aside from a complex decision logic program structure (implemented with OOP), the program uses a multivariate regression model to predict airport passenger estimated wait time at security filters, and a model to predict airport passenger distribution at any given day based on historical data. Moreover, extensive testing was added with PyTest to always follow a CD philosophy during development. The tool is being tested by several airports right now to optimize the scheduling of security facilities and personnel.
#Data Science
#Engineering
#Computer Science
#Programming
#Python
#Automation
#Tkinter
#Artificial Intelligence
#Pandas
#Machine Learning
Neo Tribes is a web application meant to be a network of neotribes! The user can explore existing tribes in the world, communicate with them and discover their progress towards a more sustainable and decentralized way of life on our planet. You can also create your own tribe and share with the world and with other tribes.
You can read more about the idea of neo tribes in the welcome message that appears when you first access the page, or by clicking the About button on the globe page.
The project utilizes the CesiumJS library for the globe. Through working on this project, I have mastered the Django framework and become a proficient full-stack web developer. Since I have done the whole work on my own, from start to current version, I have also had to learn about many other related topics, such as containerization (docker, docker-compose), production deployment (with Nginx and uWSGI in a VM) and DevOps, Unit Testing, Linux Servers, front-end design, full-stack development, etc.
Check out the demo: www.neotribes.world/demo
#Web Development
#Computer Science
#Programming
#Python
#Databases
#Linux
#Servers
#SSH
#Django
#Front-End
#Back-End
Self-employed period in Madrid focused on intensive upskilling and freelance work. Highlights:
- Delivered applied practice and freelance projects (NLP/ML mini-projects and web landing pages).
- Intensive self-learning in data science/analytics and AI: probability & statistics, Python libraries, Power BI, machine learning, NLP, SQL and databases.
- Intensive self-learning of Django, web technologies, back-end development and operations.
- Built a first beta version of a complex social-network web application.
#Data Science
#Artificial Intelligence
#Machine Learning
#NLP
#Python
#Power BI
#SQL
#Databases
#Django
#Web Development
#Front-End
#Back-End
#Git
Working with Linux servers, networking and software testing.
#Linux
#Servers
#Networking
#SSH
Full-time aerospace engineer focused on FEEP thrusters and electric space propulsion. Key contributions:
- Test engineer for ion thrusters in large vacuum chambers.
- Advanced data post-processing for reports and analysis using Python.
- Automation of core manufacturing processes with Python.
- Production/test database implementation, maintenance, visualization, and trend/correlation analysis.
#Aerospace Engineering
#FEEP Thrusters
#Electric Propulsion
#Python
#Data Processing
#Automation
#Databases
#Data Visualization
#Testing
I led a student team during my Aerospace Engineering Master studies in Austria in designing and manufacturing BLUE, a 2m long sounding rocket for the University of Applied Sciences Wiener Neustadt, which reached an altitude of 870m performing a microgravity experiment. As systems engineer I coordinated the different parts of the rocket and built an Arduino test bench for the payload experiment, integrating sensors, data storage, display, and motors (C++).
#Engineering
#Programming
#Electronics
#Project Management
I was involved in this large engineering project in Malaysia, winner of a million-dollar contract, during my time in Multimedia Engineering Pte. Ltd (Singapore). All the conceptual design of the tensile membrane was done by me in collaboration with the architect, as well as most of the internal steel structure, components and fabric designs and analysis.
#Engineering
Aerospace Engineering Degree Thesis about the design and development of a vertical axis wind turbine for urban environments performed at Kingston University London.
#Engineering