Sandro Manteiga

Development of an interactive SaaS platform integrating AI risk prediction models, maritime traffic (AIS), and operative unit positioning. The application allows visualization of risk heat maps, report generation, custom alarm management, and scenario simulation for optimal allocation of maritime and aerial resources.

DIRTER is the critical infrastructure of the Xunta de Galicia designed to optimize emergency and logistics services through geocoding. My work focuses primarily on the DIRTER_Colabora subproject: developing the private web application (Angular) for local entities and municipalities to manage, edit, and synchronize their own street maps, addresses, and points of interest with the central database (Oracle 19c + SDE). I integrate cartographic viewers based on corporate ArcGIS tools, providing municipalities with a precise spatial editing environment that ensures the quality and governance of territorial data across the entire region.

As part of the Full-Stack development team, I participated in building this scalable platform based on microservices and Docker containers. My activity focused on developing analytical dashboards for leak monitoring and implementing the business logic for the field technicians' and office administrators' workflow. The project complies with ISO 27001 industrial cybersecurity standards, ensuring interoperability with complex corporate systems.

This project, part of the Galicia RDP and co-financed by the EAFRD fund, involved developing algorithmic techniques and procedures to improve agricultural and forestry structures. My involvement focused on frontend development and a demonstrator application with an advanced cartographic viewer, designed for real-time monitoring and validation of algorithm-generated results. I also collaborated on optimizing the spatial database and backend to ensure the technical viability of the solutions. The success of the system allowed me to represent the team at JIIDE 2025, where I presented the milestones achieved in the digitalization of these processes.

Within the DIFACNA project framework, I collaborated on developing this prototype for the integrated management and predictive modeling of naval shipyards. My work focused on implementing a web interface capable of consuming and unifying Navantia Gateway APIs, validating behavior and management models in an experimental pilot test. The system allows digital twin monitoring through high-performance dashboards, transforming complex industrial process data into key visual information for strategic decision-making at the shipyard.

I participated in the development of DIGITWIN, a versatile digital twin visualization platform that integrates 2D (OpenLayers) and 3D (MapLibre GL) viewers in a unified interface. The system allows loading, visualizing and analyzing digital terrain models and 3D buildings, offering an immersive experience for urban infrastructure management. My contribution focused on implementing key viewer functionalities and integrating the different rendering engines, laying the groundwork for Avansig to tackle new digital twin projects with a proven architecture.

ZeltaFinance is a PWA designed around quick expense logging from the phone, with offline-first sync (Dexie + idempotent queue), run-rate vs. budget alerts, debt management, multi-account support, transfers, recurring movements and historical Excel import. It supports configurable currency and three languages: Galician, Spanish and English. Built on Next.js 16, React 19, Supabase and Vercel.

ZeltaNotes is a notes and tasks PWA with a Markdown editor (Tiptap), task lists, templates and Fuse.js search. It works offline-first with Dexie and an idempotent sync queue on top of Supabase, is available in Galician, Spanish and English, and shares visual identity with the ZeltaBit ecosystem.

GIS Toolbox is a browser-native spatial processing suite built on OpenLayers and Proj4js. It supports importing GeoJSON, Shapefiles (.zip), KML and WKT with drag & drop. Multi-layer management with custom colors and opacity, 13+ offline EPSG codes (plus live custom EPSG lookup), QGIS-style inline measurement tool, an attribute table with sorting and filtering, per-layer geometry statistics (area, length, bounding box), multi-format export (GeoJSON/KML/WKT), and a live coordinate bar. Zero server-side processing.

Rally Lab is the central platform for planning and organizing rally events. It integrates real-time routing with OSRM, surface classification (tarmac, fesh-fesh, stone), management of special markers (start, finish, CPs, TCs, danger zones) and areas (service park, parc fermé, spectators). Automatically generates roadbooks with elevation profiles and exports stages in GPX and GeoJSON. Designed Mobile-First for field use by organizers.