Freelancer profile translated to English.

Description

Full Stack Developer with focus on Geoinformation (GIS)

Conception, development, and testing of GIS applications
Development of interfaces, ETL processes, and databases
Consulting on the use of GIS and geodata

Programming skills in Java (Spring), Python (Django, FastAPI, Graphene, ArcPy, PyQGIS, PyQt, GDAL, Pandas, Petl), JavaScript, TypeScript (React, Node.js, ArcGIS API for JavaScript, OpenLayers, Leaflet, Chart.js, MUI, Cypress), PHP, SQL, Magik

General IT skills in AWS, SQLite, PostgreSQL, MapServer, QGIS, Lovion BIS, Smallworld GIS, GIT, SVN, Docker, FME (Desktop, Server), ArcGIS (Online, Enterprise, Pro), ArcMap, GDAL, AutoCAD, GeoServer, Linux, Wordpress, Oracle DB, MongoDB, JIRA, Confluence

Methodological skills in SCRUM, Kanban, and agile working methods

Languages

German
Native or bilingual
English
Fluent

Workplace preferences

Can work on-site

Köln (up to 50km)

E.ON (Süwag Energie AG)
Participation in Project "Data Migration New GIS"
ENERGY AND UTILITIES
December 2024 - Today (1 year and 6 months)
Frankfurt am Main, Germany
Cleaning and homogenization of spatial data sets for preparation of migration into a new GIS system based on ArcGIS/VertGIS. As well as the development of a migration script as part of the ETL pipeline for automated and quality-assured data transfer.
- Automated identification and correction of erroneous or incomplete spatial data sets
- Ensuring data completeness and quality before and after migration
- Co-development of the ETL data pipeline for migrating data into the new system

Technologies used: Python (SQLAlchemy, (Geo-)Pandas, ArcPy, Shapely), SQL, Oracle DB, ArcGIS, FME
Python SQL GIS ETL Datenbereinigung
Sparkassen-Management Services GmbH
Central Real Estate Market Database (ZIMDB)
BANKING AND INSURANCE
May 2023 - December 2024 (1 year and 7 months)
Stuttgart, Germany
Development of an ETL pipeline and a REST API for determining real estate valuations and for providing spatial micro and macro information on real estate using machine learning
- Conception, further development, and refactoring of the application based on a prototype
- Creation of unit and integration tests
- Setup of the CI/CD pipeline

Technologies used: Python (FastAPI, XGBoost, Tensorflow, Pydantic, Pyright, Pytest), Typescript (React, MUI, Playright), MongoDB, TeamCity, Docker
Python Typescript ETL Back-End development GIS
Bundesnetzagentur
Interim Operation Gigabit Land Registry
PUBLIC SECTOR
January 2023 - May 2023 (4 months)
Berlin, Germany
Maintenance, care, and occasional further development of the Gigabit Land Registry systems (Broadband Atlas, Analysis Platform, Data Provision, and Data Pipeline)
- Bug fixing and incident resolution
- End-to-end testing
- Automation of work steps for setting up production and staging environments
- Release management

Technologies used: TypeScript (React, ArcGIS API for JavaScript, MobX, Chart.js, Node.js, MUI, Tailwind, Cypress), Python (Django, Petl, GraphQL, Pytest), ArcGIS Portal, AWS