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Rainer ZaissRZ

Rainer Zaiss

Geospatial Data Specialist (GIS, PostGIS, Remote S

€350/day
München, DE
15+ years

Average response time: 1 hour

About Rainer

I help organizations manage and transform complex geospatial data into reliable, structured datasets for analysis and decision-making.

With 20+ years of experience in GIS and geospatial data processing, I specialize in data migration, integration, and quality control of large and heterogeneous datasets. I design efficient workflows and work extensively with PostgreSQL/PostGIS, QGIS, and spatial analysis methods.

I have worked on international projects (UNHCR, research institutions) involving large databases, historical maps, and remote sensing data. My focus is on delivering clean, consistent, and high-quality data that can be directly used in operational and analytical contexts.

Available for remote projects.
  • German

    Native or bilingual

  • French

    Native or bilingual

  • English

    Fluent

Can work on-site
München (up to 50km)

Experience

  • IRD-Institut de Recherche pour le Développement
    GIS & Geospatial Data Specialist
    RESEARCH
    January 2005 - Today (21 years and 5 months)
    Paris, France
    Senior GIS & geospatial data specialist with 20+ years of international experience in data processing, transformation, and quality assurance of large geospatial datasets.

    Responsible for the design and implementation of complex data workflows (100+ processing steps), including data migration, integration, and harmonization of heterogeneous data sources.

    Extensive experience in spatial analysis using PostgreSQL/PostGIS, as well as GIS tools such as QGIS and ArcGIS. Strong expertise in handling vector and raster data, georeferencing, and remote sensing workflows.

    Experience in transforming large historical map collections into structured geospatial datasets, including georeferencing, mosaic creation, and implementation of INSPIRE-compliant metadata.

    Practical experience in aerial imagery interpretation and orthomosaic generation using Structure-from-Motion (SfM) with Agisoft Metashape.

    Strong focus on data quality, structured workflows, and reliable delivery of results.
    Data processing Data Migration data-integration Spatial Databases Remote Sensing
  • UNHCR – United Nations High Commissioner for Refugees
    GIS Analyst / Project Coordinator
    PUBLIC SECTOR
    January 2001 - December 2004 (3 years and 11 months)
    Genf, Switzerland
    Development and maintenance of global geospatial databases in an international humanitarian context.

    Data analysis and visualization to support decision-making processes, including spatial data integration from multiple sources.

    Implementation of quality control procedures and structured data management workflows.

    Collaboration with international teams and stakeholders in a multi-country environment.
    Geospatial data Data Integration Spatial Analysis Project Coordination Decision Support
  • SEGESA - Société d’Études Géographiques et Sociologiques Appliquées
    GIS Data Technician
    ENVIRONMENTAL
    September 1999 - December 2000 (1 year and 3 months)
    Paris, France
    Processing and preparation of geospatial data, including handling of vector and raster datasets.

    Support for GIS analysis and map production using GIS tools.

    Data conversion, structuring, and quality control for geospatial datasets.

    Collaboration within technical teams on geospatial data workflows.
    Geospatial data Vector Data Raster Data Data processing Data Quality

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Education

  • Diplom Geographie (mit Auszeichnung)
    UNIVERSITÄT HEIDELBERG
    1998
  • Aufbaustudium Kartographie & GIS
    SORBONNE UNIVERSITÄT PARIS 1 / ENSG
    1999

Skill set

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