Full-Stack & Geospatial Data Engineer

Sandro Manteiga
Building Digital Experiences.

Computer Engineer specialized in robust architectures, GIS systems, and scalable solution development with Java and React.

Portfolio & Experience

Building the future
digital and spatial.

A selection of technical implementations ranging from complex geospatial systems to scalable design architectures.

2025 - 2026

Design System

UI Engineering

Strongly typed atomic component ecosystem. Implementation of Design Tokens for visual consistency, accessibility (a11y), and modular scalability on Shadcn/UI.

React PatternsTailwindSystem Design
2024

OL Advanced

GIS & WebGIS Architecture

High-performance vector rendering engine based on OpenLayers. Implements precise digitization algorithms, topology management, and advanced geospatial geometry manipulation.

OpenLayersTypeScriptSpatial Analysis
2016 - 2021

ZeltaBit

Infrastructure & Hardware

Deployment of high-performance computing hardware and network architectures. Comprehensive technical consulting for critical system optimization and production environments.

SysAdminNetworkingHardware
Current

GitHub Profile

Open Source Development

Central repository for continuous experimentation (R&D). Contains community contributions, proofs of concept in emerging technologies, and legacy architecture refactoring.

CI/CDOpen SourceR&D
About Me

Software Engineering
and Digital Architecture.

A deep dive into my professional career, work methodology, and the tools I use to transform complex ideas into reality.

I am a Programmer Analyst graduated from Universidade da Coruña. My passion lies at the exact intersection of rigorous software engineering and creative innovation.

I don't just write code; I build solutions. I have a strong foundation in agile methodologies and TDD, currently focusing on complex GIS systems and scalable architectures. I always seek the balance between clean code and a fluid user experience.

Specialization

Clean Code
Solid Architecture
GIS Expert
OpenLayers & PostGIS
Full Stack
Java & React Ecosystem

Career Path

Master in Geographic Information Technologies

Universitat de Girona (UNIGIS)
2025 - Present

Advanced professional training in Geographic Information Systems. Specialization in spatial analysis, geospatial databases, remote sensing, and WebGIS/mobile application development.

Programmer Analyst

Avansig S.L.
2023 - Present

Full stack development and analysis of complex systems. Specialization in GIS technologies, vector rendering optimization, and scalable Java/Spring architectures.

Degree in Computer Engineering

Universidade da Coruña
Finished 2024

Major in Computing. Final Degree Project on advanced digitization tools with OpenLayers graded with Distinction.

Founder & Technical Advisor

ZeltaBit
2016 - 2021

Tech entrepreneurship. Comprehensive project management, high-performance simulation hardware assembly, and technical consulting.

Tech Stack

Backend & Core

Java
Spring Boot
Node.js
Python
Microservicios
REST API
Clean Arch

Frontend & GIS

React
TypeScript
OpenLayers
GeoServer
Tailwind
CSS Animations
QGIS

Data & DevOps

PostgreSQL
PostGIS
Docker
Git
CI/CD
Linux
Scrum