Geomatics · Geospatial data · Toulouse, France

GIS & Remote SensingYour geospatial data working for your projects.

We train your teams, build your tools and support you from idea to production of geospatial applications.

Discuss your project See our projects

Banks Peninsula, New Zealand · Sentinel-2, June 2019Contains modified Copernicus Sentinel data (2019)

They trust us

Expertise France
ESA
EUSPA
Communauté d'Agglomération Sophia Antipolis
IDGEO
Aerospace Valley

What we do

Services

Training

Hands-on training so your teams become self-sufficient. We deliver them with the training organisation IDGEO.

What's included

Tailored modules, from beginner to expert
Optical and radar remote sensing basics
Drone and photogrammetry (WebODM)
Hands-on exercises with real data
Course materials provided

Tools: QGIS · Python · OTB · WebODM

Examples: IDGEO

Development

Geospatial tools, from prototype to production.

What's included

Earth Observation data platforms
Web GIS applications
Python processing pipelines
AI-based object detection

Tools: STAC · Docker · PostGIS · JupyterHub

Examples: Strata, CASA, MGI

Consulting

Expert guidance to scope and deliver your projects.

What's included

Needs gathering and analysis
Functional and technical specifications
Architecture and tool choices
Support through to delivery

Tools: Microsoft 365 · Markdown · Interviews · Writing

Examples: Expertise France

How we work

1Understand
Listen to your needs, your users and your field context.
2Design
Specify the solution and choose the right tools.
3Build
Develop, test and deploy in short iterations.
4Hand over
Train your teams and document, so they stay self-sufficient.

Our product

Strata

An open-source platform to access, process and visualize satellite imagery at scale.

Built for researchers, developers and organizations who want easier access to Earth Observation data.

Image catalog based on the STAC standard
JupyterHub environment to explore and process data
Results visualized in the browser
Open source, containerized with Docker

Discover Strata Request a demo

Our applications

From satellite data to applications

Five applications built in 2026: four demonstrators on the Earth Observation Innovation Labs in Kenya, and a feasibility study on maize and radar in Mexico.

Each starts from satellite data and ends with a web application with a map and charts. They can serve as the basis for a tool adapted to your data or your area.

Maize and Sentinel-1 app: map of detected maize in the State of Mexico in 2023 and NDVI, Sentinel-1 and rainfall curves for three municipios

Agriculture · radar · yield

Maize and Sentinel-1 — State of Mexico, 2020-2025

A 10 m maize map and radar, optical and weather time series, compared with official agricultural statistics, in an open web application.

Discover

3-month SPI map of Kenya in August 2026, with the rainfall series of a point

Climate · agriculture · risk

Monitoring rainfall and drought in Kenya

Drought, rainy season, index insurance and heavy rainfall by catchment, in a web application.

Discover

Change map east of Nairobi, with the curve and thumbnails of a cell

AI · land monitoring

Detecting change with foundation models

Change map between two dates and history of each cell, from optical or radar imagery.

Discover

River meanders found by similarity search on a Sentinel-2 image

AI · mapping

Finding similar features without training data

Search by example on Sentinel-2 and Sentinel-1 images, with Clay and TerraMind, in a web application.

Discover

Object detection application: settings panel and map of small boats detected in a marina

AI · very high resolution imagery

Detecting buildings, vehicles and boats in very high resolution imagery

Training a YOLO detector on xView, then detecting and outlining objects in a web application.

Discover

See the applications Discuss your needs

Technical expertise

Technologies & tools

The tools we use every day, most of them open source.

GIS & web mapping

Spatial databases, mapping applications and data catalogs.

QGIS
PostgreSQL / PostGIS
QGIS Server
Lizmap
GeoNetwork
GeoNode
Cesium

Remote sensing & drones

Optical and radar imagery, very high resolution (Pléiades) and photogrammetry.

Python
Copernicus / Sentinel
SNAP
Orfeo ToolBox
WebODM

Platforms & infrastructure

Imagery catalogs, large-scale processing and deployment.

STAC
openEO
JupyterHub
Docker
S3 storage
GitHub
Google Cloud

AI & data processing

Object detection and segmentation, Earth Observation foundation models, industrialized processing pipelines.

Python
PyTorch
YOLO
SAM (Segment Anything)
Clay
TerraMind
Prithvi
TESSERA

Portfolio

Our projects

Swipe to see more projects

GeoStratify · 2026

Maize and radar in Mexico

Feasibility study: can Sentinel-1 estimate maize yield? Six seasons over 41 municipios of the State of Mexico, presented in a public web application.

Know-how:: Study design · Data processing · Application development
Technologies:: Sentinel-1 · Sentinel-2 · NISAR · ALOS-2 · Google Cloud

See the case study

Expertise France · 2024 – 2025

Earth Observation Innovation Labs in Kenya

Specification of the Earth Observation Innovation Labs, platforms for prototyping space-based applications using Copernicus data.

Know-how:: Needs gathering · Platform architecture · Functional and technical specifications
Technologies:: STAC · Kubernetes · openEO · JupyterHub · Copernicus

Mission details

Expertise France · 2026

Earth observation applications in Kenya

Four demonstrators built while testing the Earth Observation Innovation Labs: rainfall and drought, change detection, similarity search, object detection.

Know-how:: Application design · AI and foundation models · Development and GPU testing
Technologies:: Foundation models · YOLO · Sentinel-1 / 2 · CHIRPS · STAC · Voilà

See the 4 applications

Expertise France · 2024 – 2025

Geospatial data viewer in Senegal

Specification of a geospatial data viewer based on GeoNode.

Know-how:: Needs gathering · Functional and technical specifications
Technologies:: GeoNode · Web mapping · Geospatial data

Mission details

Community Driven · 2026

Strata, open-source platform

STAC-based platform to ingest, process and visualize satellite imagery at scale. At TRL 6.

Know-how:: Product leadership · Architecture · Partner demonstrations
Technologies:: Open Source · STAC · JupyterHub · Docker · AI

Explore Strata

CASA · Since 2025

GIS modernization (CASA)

Upgrade of the Sophia Antipolis urban community's GIS infrastructure: PostGIS, Lizmap, GeoNetwork and Cesium, deployed with Docker and GitHub.

Know-how:: GIS infrastructure consulting · Configuration and deployment · Versioning and CI/CD
Technologies:: PostGIS · Lizmap / QGIS Server · GeoNetwork · Docker & CI/CD

About CASA

IDGEO · Since 2022

Master's remote sensing course

Remote sensing module of the 'Geomatics Project Manager' master's-level program: optical and radar basics, then hands-on work with QGIS and Python.

Know-how:: Course design · Teaching · Hands-on exercises
Technologies:: Remote Sensing · Optical · Radar · QGIS · Python · OTB

The program

IDGEO · Since 2022

Professional remote sensing training

Continuing education for professionals: optical and radar remote sensing, satellite image processing with QGIS and Python.

Know-how:: Course design · Teaching · Hands-on exercises
Technologies:: Remote Sensing · Optical · Radar · QGIS · Python · OTB

View syllabus

IDGEO · 2024

Drone & photogrammetry training

Theory and hands-on training on drone data: photogrammetry principles and image processing with WebODM.

Know-how:: Course design · Teaching · Hands-on exercises
Technologies:: Drone · Photogrammetry · WebODM

About IDGEO

TotalEnergies · 2023 – 2024

Drone emissions monitoring (AUSEA)

Processing data from a drone-borne sensor to locate and quantify methane (CH₄) and CO₂ emissions from industrial sites.

Know-how:: Data analysis · Industrialization · Stakeholder reporting
Technologies:: Drone · Methane · CO₂ · Python · Industrialization

AUSEA innovation

MGI · 2024 – 2025

Maritime transport mapping

Interactive web map listing all river and maritime logistics stakeholders in the South region of France.

Know-how:: Needs gathering · Web mapping
Technologies:: Web mapping · Logistics · River & maritime

View map

EUSPA · 2022

EO4ART, MyEUSpace winner

ImaginEarth project that won the EUSPA MyEUSpace competition: a web app connecting Earth Observation data with digital art.

Know-how:: Product design · Web development
Technologies:: Web app · Earth Observation · API · Docker & CI/CD · Google Cloud Platform

Read the announcement

ESA · 2021

IE4Education (ESA)

Educational resources based on space imagery to raise young people's awareness of climate and geographical challenges.

Know-how:: Project management · Market study
Technologies:: Space imagery · Education · Project management · Market study

Learn more

ImaginEarth · Since 2019

ImaginEarth: art from above

Online shop and exhibitions of fine art prints made from satellite images, on themes such as agriculture, climate and urbanization.

Know-how:: Business creation · E-commerce · Exhibitions
Technologies:: E-commerce · Google Cloud Platform · Python · APIs · Docker & CI/CD

Visit gallery

About us

About GeoStratify

GeoStratify specializes in Geographic Information Systems (GIS) and Earth Observation. Our goal: make geospatial data easy to use, for better decisions.

We combine three activities: training, development of geospatial applications — with Strata, our open-source platform — and consulting. We work with local authorities, companies and international organizations.

GeoStratify is the consulting practice of Guillaume Rieu, an independent consultant. Depending on the project, it brings in independent experts in artificial intelligence and UX/UI.

The founder

Guillaume Rieu

GIS & Earth Observation consultant

An agronomist engineer (Purpan) with a postgraduate degree in GIS from AgroParisTech, Guillaume spent six years at Terranis building satellite-based services for agriculture and the environment. Today he develops geospatial and Earth Observation applications, and teaches remote sensing.

View CV

GeoStratify is a member of the Aerospace Valley competitiveness cluster.

10+: years of experience in GIS and remote sensing
2021: start of activity as an independent consultant
2: working languages: French and English

Get in touch

Let's talk about your project

GIS, Earth Observation, training or Strata: tell us what you need and we'll get back to you quickly.

Toulouse, France
LinkedIn
View CV