👋 Hi, I'm Renny Espinosa (Rening23)

Survey Engineer / Geomatics + Python Developer building geospatial products end-to-end (GIS, GNSS/RTK, backend APIs, and web mapping).

📍 Spain
🧭 Focus: Geospatial platforms • GNSS processing • Web GIS • Django/DRF • React • PostGIS • Docker

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🚀 Featured Projects

🗺️ Geocodev-miniGis — Full-stack Web GIS (Django + React + PostGIS)

A mini web GIS platform: API + frontend mapping + PostGIS, containerized with Docker.

• Stack: Django / DRF, React (Vite), Leaflet, PostGIS, Docker, Caddy
• Repo: https://github.com/Rening23/Geocodev-miniGis
• Highlights:
  • REST API + auth
  • Spatial queries (PostGIS)
  • Frontend map tools (layers, draw, export/import)

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🗺️ Geocodev-watershed — Full-stack Web GIS (Django + React + PostGIS)

An app for calculate a watershed: API + frontend mapping + PostGIS, containerized with Docker.

Stack: Django / DRF, React (Vite), Leaflet, PostGIS, Docker, Caddy Repo: https://github.com/Rening23/Geocodev-watershed

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🗺️ Geocodev-Coordinates — Full-stack Web GIS (Django + React + PostGIS)

An app for transfor coordinates from utm to geopraphic and viceversa: API + frontend mapping + PostGIS, containerized with Docker.

Stack: Django / DRF, React (Vite), Leaflet, PostGIS, Docker, Caddy Repo: https://github.com/Rening23/Geocodev-coordinates

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🗻 dem-to-contours — DEM to contour lines

Generate contour lines from a DEM, designed as a simple reproducible workflow.

• Stack: Python, notebooks/scripts
• Repo: https://github.com/Rening23/dem-to-contours
• Output: contour lines (vector)

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✂️ CORTAR-RASTER — Clip raster by polygon (Colab-friendly)

Small tool to cut rasters using a polygon geometry, easy to test and reuse.

• Stack: Python, Google Colab
• Repo: https://github.com/Rening23/CORTAR-RASTER

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📐 Scale-factor-UTM — UTM scale factor helper

Utility to compute/understand UTM scale factor (useful for surveying workflows).

• Stack: Python
• Repo: https://github.com/Rening23/Scale-factor-UTM

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🧰 Tech Stack

Backend: Python, Django, Django REST Framework
Frontend: React, Vite, Leaflet Geo: PostGIS, GDAL/raster tools, vector processing
DevOps: Docker, docker-compose, Linux
Concepts: GIS workflows, surveying, GNSS/RTK processing, geodesy

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📌 What I’m working on

• Building geospatial tools and platforms that combine surveying/GNSS + web GIS + scalable APIs
• Improving project documentation, demos, and CI/CD for production-ready delivery

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🤝 I’m open to

• Backend / Full-stack roles with a geospatial focus
• GIS product engineering, spatial data pipelines, geodesy/GNSS-related tooling

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📫 Contact

• LinkedIn: www.linkedin.com/in/renny-espinosa-30147962
• Email: rennyespinosa@gmail.com

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🌍 Languages

• Spanish (native)
• English (professional)