Timothy Ellersiek
Senior Software Engineer at Tesco
Bonn, North Rhine-Westphalia, Germany
Summary
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Top SchoolTimothy Ellersiek is a senior software engineer and geospatial specialist with 11 years of experience building cloud-native routing and last-mile logistics platforms for enterprises and public-sector projects. He has led cross-functional, international teams to deploy scalable navigation solutions for Tesco’s commercial fleet and contributed to open-source spatial infrastructure like openrouteservice to democratize access to Earth observation and map data. His work spans spatial databases, scalable API architecture, DevOps, and data visualization, with measurable impact on delivery speed, cost efficiency, and regulatory compliance across UK and Central European transport networks. Comfortable bridging research and production, he has collaborated with NASA-related open-source initiatives and applied large-scale behavioral analytics from earlier data science roles to practical routing problems. Based in Bonn, Germany, Timothy combines academic training in GIS with hands-on systems engineering to turn complex spatial data into operational advantages.
11 years of coding experience
18 years of employment as a software developer
Master's Degree Geographic Information Systems, Master's Degree Geographic Information Systems at Ruhr University BochumBachelor's Degree Geography and Philosophy, Bachelor's Degree Geography and Philosophy at The University of Bonn
English, German
Stackoverflow
1,350reputation
550kreached
19answers
23questions
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Github Skills (200)
tiles10
traveling-salesman10
dijkstra10
solver10
marker10
pickup10
flask-application10
chartjs-plugin10
cpp10
react-leaflet10
matrix10
api10
points10
angularjs10
protocols10
Programming languages (10)
Github contributions (5)
GIScience/openpoiservice
Jan 2018 - Apr 2020
:round_pushpin: Openpoiservice is a flask application which hosts a highly customizable points of interest database derived from OpenStreetMap data.
Contributions:4 releases, 50 commits, 45 PRs in 2 years 2 months
pythonflaskpushpinpointsinterest
gis-ops/location-allocation
Jul 2021 - Sep 2021
Contributions:42 commits in 2 months
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