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gerardoezequiel.xyz

Gerardo Ezequiel Martín Carreño · He/Him · London

Full Stack Spatial Data Scientist and Urban Sustainability practitioner.

Environmental scientist turned spatial data scientist turned full-stack engineer. I build practice-based research instruments at the intersection of urban science, biosignals, embodied technology and critical cartography. Currently at TJX Europe (location intelligence), with a side practice in psychogeographic drift, atmospheric urbanism and biosignal-driven place-making.

Selected work

All projects →

Derive

2023 — present

  • Practice
  • PWA
  • Biosignals
  • Generative audio
  • GDPR

Psychogeographic drift PWA fusing Polar H10 HRV via Web Bluetooth, granular and Paulstretch audio synthesis, six Claude narrators and a UK GDPR Article 9 hash-chained consent ledger. Quarterly anonymised dataset releases under Zenodo DOI.

Shaping Cool Cities

2024

  • MSc thesis
  • Urban heat
  • GeoAI
  • Multi-city

MSc dissertation at UCL Bartlett: multi-source data fusion (satellite imagery, 3D city models, street networks, street-level computer vision) to predict urban overheating across Amsterdam, Athens, Barcelona, Berlin, Madrid, Paris.

Geospatial Careers

2024 — present

  • Side project
  • Next.js
  • Supabase
  • Data engineering

Career intelligence platform for geospatial professionals. 7,096+ jobs indexed across 11 sources; salary benchmarks; ATS-ready CV builder; impact mapping against UN SDGs and planetary boundaries.

The Infinite Game

2024

  • Collaboration
  • Immersive theatre
  • Responsive environment

Collaborator with Persona Collective (Hackney, London). Arts Council England DYCP. Immersive sci-fi theatre prototype merging video game mechanics with live performance in an East London industrial estate.

Upside Down Earth

2023

  • Critical cartography
  • TypeScript
  • MapLibre
  • Three.js

Cartographic artefact maker that inverts the south-on-top convention as critical spatial practice. Vanilla TypeScript with MapLibre, D3-geo and Three.js.

What I do

Build

Full-stack TypeScript + Next.js. Real-time biosignal pipelines via Web Bluetooth. AudioWorklet synthesis. Meyda spectral analysis. Cloud-native geospatial stacks (PostGIS, DuckDB, GeoParquet, COG).

Map

MapLibre GL JS, deck.gl, H3, GDAL, D3-geo, Three.js. Multi-source data fusion across satellite imagery, 3D city models, street networks and street-level computer vision.

Sense

Wearable biosignals (Polar H10 HRV via Web Bluetooth GATT). Sensor fusion across accelerometer, ambient acoustic classification, sun-position telemetry and weather. UK GDPR Article 9 consent design with hash-chained ledger.

Write

Practice-based research at the edge of urban science and embodied technology. Critical-cartography lineage from Debord to Massey to Christian Nold. Public dataset releases under Zenodo DOI.

"What makes a place felt, not mapped."

— the question that holds across the work